Preparation method of low-smoke flame-retardant modified polyethylene foam material for automobile cavity
A polyethylene foaming, low-smoke flame-retardant technology, which is applied in the field of foaming material preparation, can solve the problems of insufficient contribution to the realization of high magnification, material cracking and hard cracking, flammable products, etc. The effect of high foaming ratio and good conformability
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Embodiment 1
[0025] Example 1: The preparation method of the low-smoke flame-retardant modified polyethylene resin foam material for automobile cavity is carried out according to the following steps:
[0026] The mass percentage of each component of the foaming masterbatch: linear low-density polyethylene resin 40.4%; Ehuaping rubber 20.2%; EPDM 15.15%; olefin elastomer resin 10.1%; butadiene rubber 10.1%; talc Powder 4.04%.
[0027] The preparation process of the foaming masterbatch: first accurately weigh the linear low-density polyethylene resin (brand 607 Beijing Yanshan Petrochemical) 20Kg, Yihuaping rubber (brand 500HV German Bayer) 10Kg, and olefin elastomer resin (brand VM3000 US) according to the mass percentage. Exxon Mobil) 5Kg, butadiene rubber (brand BR9000 Gaoqiao Petrochemical) 5Kg, EPDM rubber (brand KEP330 Korea Kumho) 7.5Kg and talcum powder (800 mesh) 2Kg, in XK-250 banbury The banburying is carried out in the machine, and the feeding sequence is to first put in linear low d...
Embodiment 2
[0032] Example 2: The preparation method of the low-smoke flame-retardant modified polyethylene resin foam material for automobile cavity is carried out according to the following steps:
[0033] The mass percentage and preparation process of the foaming masterbatch are exactly the same as in Example 1.
[0034] The mass percentage of each component of the foaming material mixture: foaming masterbatch 75.86%, azodimethylamine 15.33%; zinc oxide 0.77%; stearic acid 0.38%; dicumyl peroxide 3.07%, trimethylolpropane Trimethacrylate (TMPTMA) 3.83%; sulfur 0.77%.
[0035] Foaming material mixing process: Weigh 24.75Kg of masterbatch and put it into XK-360 open rubber mixing machine, add 5kg of azodimethylamine (brand 6000 Hangzhou Haihong) and zinc oxide (content ≥90%) 0.25 Kg, stearic acid (melting point 69.6±2℃) 0.125Kg, dicumyl peroxide (Shanghai Gaoqiao) 1Kg, trimethylolpropane trimethacrylate (TMPTMA) (Shanghai Fangruida Chemical Co., Ltd. ) 1.25Kg and 0.25Kg of sulfur are mixed, t...
Embodiment 3
[0038] Example 3: The preparation method of the low-smoke flame-retardant modified polyethylene resin foam material for automobile cavity is carried out according to the following steps:
[0039] The mass percentage and preparation process of the foaming masterbatch are exactly the same as in Example 1.
[0040] The mass percentage of each component of the foaming material mixture: foaming masterbatch 73.72%; azodimethylamine 11.17%; 4,4-disulfonyl hydrazide diphenyl ether (OBSH) 7.45%; zinc oxide 1.12%; stearic acid 0.74%; dicumyl peroxide 2.23%; trimethylolpropane trimethacrylate (TMPTMA) 2.98%; sulfur 0.6%.
[0041] Foaming material mixing process: Weigh 24.75Kg of foaming masterbatch and put it into XK-360 open type rubber mixing machine, add 3.75kg of azodimethylamine (brand 6000 Hangzhou Haihong), 4,4-disulfonate respectively Hydrazide diphenyl ether (BOSH) (Hangzhou Haihong) 2.5kg, foaming aid zinc oxide (content ≥90%) 0.375Kg, stearic acid (melting point 69.6±2℃) 0.25Kg, dic...
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