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Study on Halogen Free Flame Retardant EPDM

Author: ZhuChunXu
Tutor: ZhangYinXi
School: Shanghai Jiaotong University
Course: Materials Science
Keywords: EPDM Magnesium methacrylate Magnesium hydroxide Silastic Mechanical Properties Halogen-free flame retardant
CLC: TQ333.4
Type: Master's thesis
Year: 2007
Downloads: 502
Quote: 4
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Abstract


This thesis methacrylate was added magnesium (MDMA) The method of the EPDM rubber (EPDM) having excellent mechanical properties of highly filled magnesium hydroxide (Mg (OH) 2) was prepared and to be adopted to the silicone rubber (MVQ ) magnesium methacrylate (MDMA) for the preparation of halogen-free flame retardant system retardant ethylene propylene diene rubber ( EPDM ) . On this basis , the preparation , structure and properties of the blends . Was added in high fill Mg (OH) 2 of the EPDM the MDMA to improve its mechanical properties , the method , three different adding methods ( added directly to MDMA method, a method of in situ generated MDMA , pre-generated MDMA ) can to improve the mechanical properties of highly filled Mg (OH ) 2 of EPDM vulcanizates , especially the method and in situ generated directly join MDMA MDMA method can greatly improve the the high fill Mg ( OH ) 2 of EPDM vulcanizates mechanical properties . The case of the in situ generation of MDMA , EPDM used in an amount of 100 parts , of Mg (OH) 2 used in an amount of 200 parts of MAA used in an amount of 5 parts of DCP used in an amount of 1 parts , can be obtained with good mechanical properties and flame retardance Halogen-free flame-retardant material . In addition , and EVA can further improve the Mg (OH) 2 highly filled EPDM vulcanizate Tensile strength , elongation at break decreases with an increase with the EVA content . And EVA can raise the Mg (OH ) 2 highly filled EPDM vulcanizate oxygen index , but no effect on the vertical combustion level . Studies have shown that the chemical precipitation of Mg (OH) 2 with the physical crushing of Mg (OH) 2 highly filled EPDM vulcanizates have good mechanical properties . Different MDMA join obtained by the method highly filled Mg (OH) 2 of EPDM SEM Table

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CLC: > Industrial Technology > Chemical Industry > Rubber Industry > Synthetic rubber > Ethylene propylene rubber (polyethylene propylene rubber)
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