Intumescent Flame Retardant

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Yuan Hu - One of the best experts on this subject based on the ideXlab platform.

  • Synthesis and application of a mono-component Intumescent Flame Retardant for polypropylene
    2018
    Co-Authors: Changjiang Zhu, Lei Song, Qilong Tai, Mingshan He, Yu Liu, Jianguang Cui, Yuan Hu
    Abstract:

    Abstract A novel mono-component Intumescent Flame Retardant, named as hyper-branched triazine-piperazine pyrophosphate (HTPPP), is synthesized by using cyanuric chloride, 1-boc-piperazine and phosphoric acid. Chemical structures of HTPPP are characterized by fourier transform infrared (FTIR) spectra, 31P nuclear magnetic resonance (NMR), solid-state 13C NMR, elemental analysis (EA) and inductively coupled plasma mass spectrometer (ICP-MS). The resulting HTPPP is used alone as an Intumescent Flame Retardant for polypropylene (PP). PP/HTPPP composite can achieve a limiting oxygen index (LOI) value of 30.5% and the vertical burning test (UL-94) V-0 rating at 25 wt% HTPPP loading. Besides, HTPPP is thermally stable with initial decompose temperature as high as 275 °C in air atmosphere. The Flame Retardant mechanism is concluded based on the analysis of the char residue.

  • Preparation and properties of a single molecule Intumescent Flame Retardant
    2013
    Co-Authors: Xilei Chen, Chuanmei Jiao, Shaoxiang Li, Yuan Hu
    Abstract:

    Abstract Melamine salt of pentaerythriol phosphate (MPP), as a new single molecule Intumescent Flame-Retardant, was prepared from pentaerythritol, phosphoric acid, and melamine, and then incorporated into polypropylene (PP) with organic montmorillonite (OMT) to obtain Flame Retardant PP/MPP/OMT composites. The flammability and combustion behavior of Flame Retardant PP composites were characterized by using LOI, UL-94 test, and cone calorimeter, respectively. The results showed that the Flame Retardant properties of the composite containing 29.0 wt% MPP and 1.0 wt% OMT are the best among all the composites. The digital photographs after cone calorimeter test demonstrated that moderate OMT could promote to form the homogenous and compact Intumescent char layer.

  • modification of lignin and its application as char agent in Intumescent Flame Retardant poly lactic acid
    2012
    Co-Authors: Rui Zhang, Xifu Xiao, Qilong Tai, Hua Huang, Yuan Hu
    Abstract:

    Urea-modified lignin was prepared according to the Mannich reaction and well characterized by Fourier transform infrared spectrometer, elemental ananlyses, and scanning electron microscopy (SEM). Ammonium polyphosphate (APP) and urea-modified lignin were added into poly(lactic acid) (PLA) as a novel Intumescent Flame-Retardant (IFR) system to improve Flame retardancy of PLA. The flammability of IFR–PLA composites was studied using limiting oxygen index, UL-94 vertical burning method and cone calorimeter test, and their thermal stability was evaluated by thermogravimetric analysis. The results showed that the urea-modified lignin combined with APP exhibited much better Flame retardancy and thermal stability than that of the combination of virgin lignin and APP. The improvement may be attributed to the better char morphology with more phosphoric char evidenced by SEM and X-ray photoelectron spectroscopy. POLYM. ENG. SCI., 2012. © 2012 Society of Plastics Engineers

  • preparation of silane precursor microencapsulated Intumescent Flame Retardant and its enhancement on the properties of ethylene vinyl acetate copolymer cable
    2012
    Co-Authors: Bibo Wang, Hongdian Lu, Xiaofeng Wang, Lei Song, Gang Tang, Weizhao Hu, Yuan Hu
    Abstract:

    Abstract Silane precursor microencapsulated Intumescent Flame Retardant (IFR) was prepared by sol–gel process and then modified with vinyltrimethoxysilane (A-171) with the goal of that the vinyl group functionalized silica microcapsule could be introduced into EVA matrix through crosslinking, which will enhance the compatibility and dispersion between EVA matrix and microencapsulated IFR. The effects of silane precursor microencapsulation technology on the mechanical, electrical, thermal, interfacial adhesion and Flame Retardant properties of Intumescent Flame-Retardant EVA cable were investigated by mechanical test, resistance meter, thermogravimetric analysis (TGA), scanning electron microscopy (SEM), limiting oxygen index (LOI) and UL-94 test. The Fourier transform infrared (FTIR) results indicated silane precursor microencapsulated IFR were successfully prepared, and the water contact angle (WCA) results indicated that silane precursor results in the transformation of hydrophilic to hydrophobic of IFR surface. The characterization for the various properties of EVA composites demonstrated that silane precursor microencapsulation technology enhanced the interfacial adhesion, mechanical, electrical, thermal stability and Flame retardancy of EVA/MCAPP/MCPER system. Furthermore, the water resistance test results demonstrate that EVA/MCAPP/MCPER composites have good water durability. This investigation provides a formulation for the industrial application as insulated materials of EVA cable with excellent properties.

  • synergistic effect of graphene on antidripping and fire resistance of Intumescent Flame Retardant poly butylene succinate composites
    2011
    Co-Authors: Xin Wang, Hongdian Lu, Lei Song, Hongyu Yang, Yuan Hu
    Abstract:

    Intumescent Flame Retardant poly(butylene succinate) (IFRPBS) composites with enhanced fire resistance were prepared using graphene as synergist. The morphology of fracture surfaces of the composites was investigated by scanning electron microscopy (SEM). The limiting oxygen index (LOI) values increased from 23.0 for the pure PBS to 31.0 for IFRPBS with 20 wt % IFR loading. The addition of graphene further improved the LOI values of the composites and exhibited excellent antidripping properties. The UL-94 V0 materials were obtained with a formulation of 18 wt % IFR and 2 wt % graphene. MFI measurement indicated that the presence of graphene significantly enhanced the melt viscosity and restrained the melt dripping. The thermal degradation and gas products of IFRPBS/graphene systems were monitored by thermogravimetric analysis (TGA), real time Fourier transform infrared spectrometry (RTFTIR), and thermogravimetric analysis-Fourier transform infrared spectrometry (TG-FTIR). X-ray photoelectron spectroscopy ...

Lei Song - One of the best experts on this subject based on the ideXlab platform.

  • Synthesis and application of a mono-component Intumescent Flame Retardant for polypropylene
    2018
    Co-Authors: Changjiang Zhu, Lei Song, Qilong Tai, Mingshan He, Yu Liu, Jianguang Cui, Yuan Hu
    Abstract:

    Abstract A novel mono-component Intumescent Flame Retardant, named as hyper-branched triazine-piperazine pyrophosphate (HTPPP), is synthesized by using cyanuric chloride, 1-boc-piperazine and phosphoric acid. Chemical structures of HTPPP are characterized by fourier transform infrared (FTIR) spectra, 31P nuclear magnetic resonance (NMR), solid-state 13C NMR, elemental analysis (EA) and inductively coupled plasma mass spectrometer (ICP-MS). The resulting HTPPP is used alone as an Intumescent Flame Retardant for polypropylene (PP). PP/HTPPP composite can achieve a limiting oxygen index (LOI) value of 30.5% and the vertical burning test (UL-94) V-0 rating at 25 wt% HTPPP loading. Besides, HTPPP is thermally stable with initial decompose temperature as high as 275 °C in air atmosphere. The Flame Retardant mechanism is concluded based on the analysis of the char residue.

  • preparation of silane precursor microencapsulated Intumescent Flame Retardant and its enhancement on the properties of ethylene vinyl acetate copolymer cable
    2012
    Co-Authors: Bibo Wang, Hongdian Lu, Xiaofeng Wang, Lei Song, Gang Tang, Weizhao Hu, Yuan Hu
    Abstract:

    Abstract Silane precursor microencapsulated Intumescent Flame Retardant (IFR) was prepared by sol–gel process and then modified with vinyltrimethoxysilane (A-171) with the goal of that the vinyl group functionalized silica microcapsule could be introduced into EVA matrix through crosslinking, which will enhance the compatibility and dispersion between EVA matrix and microencapsulated IFR. The effects of silane precursor microencapsulation technology on the mechanical, electrical, thermal, interfacial adhesion and Flame Retardant properties of Intumescent Flame-Retardant EVA cable were investigated by mechanical test, resistance meter, thermogravimetric analysis (TGA), scanning electron microscopy (SEM), limiting oxygen index (LOI) and UL-94 test. The Fourier transform infrared (FTIR) results indicated silane precursor microencapsulated IFR were successfully prepared, and the water contact angle (WCA) results indicated that silane precursor results in the transformation of hydrophilic to hydrophobic of IFR surface. The characterization for the various properties of EVA composites demonstrated that silane precursor microencapsulation technology enhanced the interfacial adhesion, mechanical, electrical, thermal stability and Flame retardancy of EVA/MCAPP/MCPER system. Furthermore, the water resistance test results demonstrate that EVA/MCAPP/MCPER composites have good water durability. This investigation provides a formulation for the industrial application as insulated materials of EVA cable with excellent properties.

  • effect of cellulose acetate butyrate microencapsulated ammonium polyphosphate on the Flame retardancy mechanical electrical and thermal properties of Intumescent Flame Retardant ethylene vinyl acetate copolymer microencapsulated ammonium polyphosphat
    2011
    Co-Authors: Bibo Wang, Qinbo Tang, Ningning Hong, Lei Song, Lei Wang, Yongqian Shi
    Abstract:

    Ammonium polyphosphate (APP), a widely used Intumescent Flame Retardant, has been microencapsulated by cellulose acetate butyrate with the aim of enhancing the water resistance of APP and the compatibility between the ethylene-vinyl acetate copolymer (EVA) matrix and APP. The structure of microencapsulated ammonium polyphosphate (MCAPP) was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and water contact angle (WCA). The Flame retadancy and thermal stability were investigated by a limiting oxygen index (LOI) test, UL-94 test, cone calorimeter, and thermogravimetric analysis (TGA). The WCA results indicated that MCAPP has excellent water resistance and hydrophobicity. The results demonstrated that MCAPP enhanced interfacial adhesion, mechanical, electrical, and thermal stability of the EVA/MCAPP/polyamide-6 (PA-6) system. The microencapsulation not only imparted EVA/MCAPP/PA-6 with a higher LOI value and UL-94 rating but also could significantly improve the fire safety. Furthermore, the microencapsulated EVA/MCAPP/PA-6 composites can still pass the UL-94 V-0 rating after treatment with water for 3 days at 70 °C, indicating excellent water resistance. This investigation provides a promising formulation for the Intumescent Flame Retardant EVA with excellent properties.

  • synergistic effect of graphene on antidripping and fire resistance of Intumescent Flame Retardant poly butylene succinate composites
    2011
    Co-Authors: Xin Wang, Hongdian Lu, Lei Song, Hongyu Yang, Yuan Hu
    Abstract:

    Intumescent Flame Retardant poly(butylene succinate) (IFRPBS) composites with enhanced fire resistance were prepared using graphene as synergist. The morphology of fracture surfaces of the composites was investigated by scanning electron microscopy (SEM). The limiting oxygen index (LOI) values increased from 23.0 for the pure PBS to 31.0 for IFRPBS with 20 wt % IFR loading. The addition of graphene further improved the LOI values of the composites and exhibited excellent antidripping properties. The UL-94 V0 materials were obtained with a formulation of 18 wt % IFR and 2 wt % graphene. MFI measurement indicated that the presence of graphene significantly enhanced the melt viscosity and restrained the melt dripping. The thermal degradation and gas products of IFRPBS/graphene systems were monitored by thermogravimetric analysis (TGA), real time Fourier transform infrared spectrometry (RTFTIR), and thermogravimetric analysis-Fourier transform infrared spectrometry (TG-FTIR). X-ray photoelectron spectroscopy ...

  • Flame retardancy and thermal degradation of Intumescent Flame Retardant poly lactic acid starch biocomposites
    2011
    Co-Authors: Xin Wang, Lei Song, Weiyi Xing, Shanyong Xuan, Zhiman Bai
    Abstract:

    Intumescent Flame-Retardant poly(lactic acid)/starch (PLA/starch) biocomposites were prepared by means of melt blending. Microencapsulated ammonium polyphosphate (MCAPP) was added to the PLA/starch biocomposites not only to improve its Flame retardancy but also to restrain the reaction between ammonium polyphosphate and starch during processing. The Flame-Retardant properties of PLA/starch biocomposites were evaluated by limiting oxygen index, UL-94 test, and microscale combustion calorimetry (MCC) test. The results of MCC showed that the peak of heat release rate and total heat release of PLA/starch biocomposites decreased dramatically compared with those of pure PLA. The thermal degradation and gas products of PLA/starch/MCAPP systems were monitored by thermogravimetric analysis and thermogravimetric analysis−infrared spectrometry. Scanning electron microscopy and X-ray photoelectron spectroscopy were utilized to explore the surface morphology and chemical components of the char residues.

Qinghong Fang - One of the best experts on this subject based on the ideXlab platform.

  • the influence of expandable graphite on double layered microcapsules in Intumescent Flame Retardant natural rubber composites
    2016
    Co-Authors: Na Wang, Lidong Hu, Honghe Luan, Yuhu Wu, Gang Xu, Jing Zhang, Qinghong Fang
    Abstract:

    To improve both the mechanical properties and Flame-Retardant performance of Flame-Retardant natural rubber composite, double-shell co-microencapsulated ammonium polyphosphate and expandable graphite (EG) (M(AE in addition, the cone calorimetry indicates that the NR/M(A&E) composite has best Flame-Retardant properties and the lowest fire risk. Furthermore, the improvement in mechanical properties and Flame-Retardant behavior of M(A&E) particles filled NR were attributed to the desirable dispersion by the RPA. The occurrence of a synergistic effect between EG and Intumescent Flame-Retardant in the NR composites was proved. As a result, the thermal stability and Flame retardancy of NR were enhanced compared to the NR system.

  • nano mesoporous molecular sieve synergistic Intumescent Flame Retardant Flame Retardant polypropylene
    2012
    Co-Authors: Na Wang, Jiang Sen, Wenchi Han, Qinghong Fang
    Abstract:

    A nano mesoporous molecular sieve synergistic Intumescent Flame Retardant Flame-Retardant polypropylene disclosed in the invention relates to a composite material of a nano mesoporous molecular sieve, an Intumescent Flame Retardant (IFR) and a polypropylene (PP). The blend is compounded by carrying out extrusion granulation of 0.5-5wt% of the molecular sieve, 20-35wt% of the Intumescent Flame Retardant (namely ammonium polyphosphate/ pentaerythritol) and 60-80wt% of the polypropylene pellets to finally obtain the molecular sieve/ Intumescent Flame Retardant/ polypropylene composite material with excellent mechanical and Flame Retardant property, wherein, the Intumescent Flame Retardant is compounded by ammonium polyphosphate and pentaerythritol. According to the invention, by adding the nano mesoporous molecular sieve to carry out synergistic Flame Retardant, the Flame Retardant efficiency is improved obviously, the residual amount of carbon residue and the density of carbon bed are increased, the problem of the significant drop of the mechanical property caused by adding a large number of Flame Retardant is alleviated effectively, so that the wide application filed of the material is ensured.

  • nano mesoporous molecular sieve synergistic Intumescent Flame Retardant rubber and preparation method thereof
    2012
    Co-Authors: Na Wang, Wenchi Han, Xiangzhou Wang, Qinghong Fang
    Abstract:

    Nano-mesoporous molecular sieve synergistic Intumescent Flame-Retardant rubber and a preparation method thereof relate to Flame-Retardant rubber and the preparation method thereof. The Flame-Retardant rubber provided by the invention comprises, by weight, 100 parts of a rubber matrix, 1.5-2.8 parts of a vulcanizing agent, 1-1.5 parts of a promoter CZ, 1-3 parts of stearic acid, 4.5-5 parts of zinc oxide, 1-2 parts of an antioxidant 4010, 1-3 parts of liquid paraffin, 30-40 parts of carbon black, 60-80 parts of an Intumescent Flame Retardant, and 0-5 parts of nano-mesoporous molecular sieve. The preparation method provided by the invention comprises the following steps of: plasticating rubber in an open mill, successively adding eleaostearic acid, zinc oxide, the promoter CZ, the antioxidant 4010, the nano-mesoporous molecular sieve, carbon black, liquid paraffin, IFR and sulphur, mixing and discharging tablets, followed by sulfuration. By the adoption of the nano-mesoporous molecular sieve synergistic Intumescent Flame Retardant, its excellent Flame-Retardant synergistic effect and interfacial compatibility effect greatly improve the Flame-Retardant performance and mechanical properties of the rubber material.

Zhengping Fang - One of the best experts on this subject based on the ideXlab platform.

  • synthesis of a novel oligomeric Intumescent Flame Retardant and its application in polypropylene
    2009
    Co-Authors: Pingan Song, Lifang Tong, Zhengping Fang, Z Xu
    Abstract:

    A novel oligomeric phosphorous-nitrogen containing Intumescent Flame Retardant, poly (4,4-diamino diphenyl methane-O-bicycli pentaerythritol phosphate-phosphate) (PDBPP), was synthesized and characterized. Thermal stability and flammability properties of polypropylene (PP)/PDBPP composites with various PDBPP loading were investigated by thermogravimetric analysis (TGA), limited oxygen index (LOI), and cone calorimeter, respectively. The results showed that the incorporation of PDBPP could improve both the thermal stability and Flame retardancy of PP considerably. PP/30%PDBPP system had a LOI value of 28 and its peak heat release rate was reduced by 60% relative to pure PP. Infrared spectrum and field emission scanning electron microscope measurements revealed that PDBPP and PP/PDBPP composites would form a continuous multicellular char layer containing phosphoric acid when exposed to elevated temperature. It was suggested that the very char layer was responsible for the enhanced thermal stability and improved Flame retardancy.

  • fabrication of dendrimer like fullerene c60 decorated oligomeric Intumescent Flame Retardant for reducing the thermal oxidation and flammability of polypropylene nanocomposites
    2009
    Co-Authors: Zhengping Fang, Pingan Song, Hui Liu, Yu Shen
    Abstract:

    A novel oligomeric phosphorous–nitrogen-containing Intumescent Flame Retardant poly (4,4-diaminodiphenylmethane-O-bicyclicpentaerythritol phosphate-phosphate) (PDBPP) is synthesized, and subsequently fullerene (C60)-decorated oligomeric Intumescent Flame Retardant, C60-d-PDBPP, is fabricated via chemical grafting reaction and characterized. The grafting degree of C60 is as high as 70 wt%, and C60-d-PDBPP nanoparticles can homogeneously disperse in polypropylene matrix since the grafting process may prevent the aggregation of C60 particles. Upon incorporating C60-d-PDBPP, thermal oxidation degradation of polypropylene is considerably delayed. When the concentration of C60-d-PDBPP reached 2 wt%, the initial degradation temperature (T5: the temperature where 5wt% mass loss occurred) and maximum weight loss rate temperature (Tmax) display an increase of about 72 °C and 80 °C, respectively. Moreover, C60-d-PDBPP can remarkably reduce the peak heat release rate (PHRR) values of polypropylene, and consequently slow down the combustion process of nanocomposites. Additionally, to some extent it prolongs the time to ignition (tign) and time to peak heat release rate (tPHRR), all of which are very important parameters for evaluating the fire retardancy of a polymeric material.

  • Intumescent Flame Retardant montmorillonite synergism in abs nanocomposites
    2008
    Co-Authors: Lifang Tong, Z Xu, Zhengping Fang
    Abstract:

    A synergistic effect was observed between montmorillonite and a novel Intumescent Flame Retardant, poly (4, 4-diaminodiphenyl methane spirocyclic pentaerythritol bisphosphonate) (PDSPB) in ABS nanocomposites. Montmorillonite dispersion was characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). Thermal stability and flammability properties were investigated by thermogravimetric analysis (TGA) and cone calorimeter tests. Incorporating PDSPB together with montmorillonite enhanced thermal stability and Flame retardancy of the ABS resin. The synergistic mechanism is caused by formation of silicoaluminophosphate (SAPO) structure formed by reactions between the phosphoric acid generated on heating from PDSPB and montmorillonite. Decomposition of the alkylammonium ion yields strongly acidic catalytic sites that may promote the oxidative dehydrogenation crosslinking charring process and increase the char yield. Silicoaluminophosphate was characterized by FT-IR spectrometry and field emission scanning electron microscopy.

  • effects of metal chelates on a novel oligomeric Intumescent Flame Retardant system for polypropylene
    2008
    Co-Authors: Pingan Song, Lifang Tong, Zhengping Fang, Yongming Jin, Fengzhu Lu
    Abstract:

    A novel oligomeric phosphorus–nitrogen containing Intumescent Flame Retardant, poly(4,4-diamino diphenyl methane-O-bicyclicpentaerythritol phosphate-phosphate) (PDBPP), was synthesized and characterized. Effects of metal chelates on Flame retardancy of polypropylene (PP)/PDBPP systems were studied and the results showed that the presence of metal chelates considerably enhanced the fire Retardant performance as evidenced by the increase of LOI values and a great reduction in peak heat release rate of PP/PDBPP system. Raman spectroscopy, infrared spectroscopy and scanning electron microscopy demonstrated that metal chelates could react with polyphosphoric acid, a decomposition product of PDBPP, to form crosslinked network. Through salt bridges a more compact char layer was formed which was responsible for the improved thermal and Flame retardancy properties of PP/PDBPP system.

  • functionalizing carbon nanotubes by grafting on Intumescent Flame Retardant nanocomposite synthesis morphology rheology and flammability
    2008
    Co-Authors: Lifang Tong, Zhengping Fang
    Abstract:

    An Intumescent Flame Retardant, poly(diaminodiphenyl methane spirocyclic pentaerythritol bisphosphonate) (PDSPB) has been covalently grafted onto the surfaces of multiwalled carbon nanotubes (MWNTs) to obtain MWNT-PDSPB and according nanocomposites were prepared via melt blending. After high density PDSPB (65 wt %) were attached to the MWNTs, core-shell nanostructures with MWNTs as the hard core and PDSPB as the soft shell were formed. The resultant MWNT-PDSPB was soluble and stable in polar solvents, such as DMF. The optical microscopy and TEM results showed that the functionalized MWNTs can achieve better dispersion in ABS matrix. The linear viscoelastic behavior indicated that MWNT-PDSPB can form network structure at very low nanotube loading than un-functionalized MWNTs. The results of flammability showed that better Flame retardancy was obtained for ABS/MWNT-PDSPB nanocomposites due to the better dispersion of MWNT-PDSPB in ABS matrix. The flammability of the composites is strongly dependent on the network structure of nanotubes which reduces the diffusion of volatile combustible fragments generated by polymer degradation which diffuse towards the surface of the burning polymer to evaporate to feed the Flame. The grafting of Intumescent Flame Retardant of PDSPB can improve both the dispersion of nanotubes in polymer matrix and Flame retardancy of the nanocomposites.

Na Wang - One of the best experts on this subject based on the ideXlab platform.

  • the influence of expandable graphite on double layered microcapsules in Intumescent Flame Retardant natural rubber composites
    2016
    Co-Authors: Na Wang, Lidong Hu, Honghe Luan, Yuhu Wu, Gang Xu, Jing Zhang, Qinghong Fang
    Abstract:

    To improve both the mechanical properties and Flame-Retardant performance of Flame-Retardant natural rubber composite, double-shell co-microencapsulated ammonium polyphosphate and expandable graphite (EG) (M(AE in addition, the cone calorimetry indicates that the NR/M(A&E) composite has best Flame-Retardant properties and the lowest fire risk. Furthermore, the improvement in mechanical properties and Flame-Retardant behavior of M(A&E) particles filled NR were attributed to the desirable dispersion by the RPA. The occurrence of a synergistic effect between EG and Intumescent Flame-Retardant in the NR composites was proved. As a result, the thermal stability and Flame retardancy of NR were enhanced compared to the NR system.

  • nano mesoporous molecular sieve synergistic Intumescent Flame Retardant Flame Retardant polypropylene
    2012
    Co-Authors: Na Wang, Jiang Sen, Wenchi Han, Qinghong Fang
    Abstract:

    A nano mesoporous molecular sieve synergistic Intumescent Flame Retardant Flame-Retardant polypropylene disclosed in the invention relates to a composite material of a nano mesoporous molecular sieve, an Intumescent Flame Retardant (IFR) and a polypropylene (PP). The blend is compounded by carrying out extrusion granulation of 0.5-5wt% of the molecular sieve, 20-35wt% of the Intumescent Flame Retardant (namely ammonium polyphosphate/ pentaerythritol) and 60-80wt% of the polypropylene pellets to finally obtain the molecular sieve/ Intumescent Flame Retardant/ polypropylene composite material with excellent mechanical and Flame Retardant property, wherein, the Intumescent Flame Retardant is compounded by ammonium polyphosphate and pentaerythritol. According to the invention, by adding the nano mesoporous molecular sieve to carry out synergistic Flame Retardant, the Flame Retardant efficiency is improved obviously, the residual amount of carbon residue and the density of carbon bed are increased, the problem of the significant drop of the mechanical property caused by adding a large number of Flame Retardant is alleviated effectively, so that the wide application filed of the material is ensured.

  • nano mesoporous molecular sieve synergistic Intumescent Flame Retardant rubber and preparation method thereof
    2012
    Co-Authors: Na Wang, Wenchi Han, Xiangzhou Wang, Qinghong Fang
    Abstract:

    Nano-mesoporous molecular sieve synergistic Intumescent Flame-Retardant rubber and a preparation method thereof relate to Flame-Retardant rubber and the preparation method thereof. The Flame-Retardant rubber provided by the invention comprises, by weight, 100 parts of a rubber matrix, 1.5-2.8 parts of a vulcanizing agent, 1-1.5 parts of a promoter CZ, 1-3 parts of stearic acid, 4.5-5 parts of zinc oxide, 1-2 parts of an antioxidant 4010, 1-3 parts of liquid paraffin, 30-40 parts of carbon black, 60-80 parts of an Intumescent Flame Retardant, and 0-5 parts of nano-mesoporous molecular sieve. The preparation method provided by the invention comprises the following steps of: plasticating rubber in an open mill, successively adding eleaostearic acid, zinc oxide, the promoter CZ, the antioxidant 4010, the nano-mesoporous molecular sieve, carbon black, liquid paraffin, IFR and sulphur, mixing and discharging tablets, followed by sulfuration. By the adoption of the nano-mesoporous molecular sieve synergistic Intumescent Flame Retardant, its excellent Flame-Retardant synergistic effect and interfacial compatibility effect greatly improve the Flame-Retardant performance and mechanical properties of the rubber material.

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