Maleic anhydride graft styrene-butadiene-styrene solvent heat-synthesizing method
A technology of maleic anhydride and a synthesis method, applied in the field of polymer science, can solve the problems of complex reaction conditions and devices, low grafting rate, uneven reaction, etc., and achieves easy large-scale production, broad application prospects, and simple reaction equipment. Effect
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Embodiment 1
[0013] Put 50ml of benzene in the autoclave, add 8g of SBS resin, 1g of maleic anhydride, and 100mg of BPO, tighten the lid of the autoclave and place it in an oven at 130°C for 8 hours, then cool it with water, open the autoclave, and pour the solution into In the ethylene glycol of 250ml, stir (rotating speed 150 revs / min) on magnetic stirrer 1 hour, to remove unreacted substance, then suction filtration, the powder that suction filtration obtains is dried 12 hours in 70 ℃ of vacuum ovens, That is, an SBS-maleic anhydride graft copolymer with a graft ratio of 5.5%wt was obtained.
Embodiment 2
[0015] Put 50ml of acetone in the autoclave, add 10g of SBS resin, 2g of maleic anhydride, 135mg of BPO and 0.8g of acrylamide, tighten the lid of the autoclave and place it in an oven at 110°C for 6 hours, then cool it with water, and open the autoclave , Pour the solution into 300ml of ethylene glycol, stir on a magnetic stirrer (rotating speed 200 rpm) for 1 hour, to remove unreacted substances, then suction filter, the powder obtained by suction filtration is placed in a vacuum oven at 80 ° C Drying in medium temperature for 12 hours obtained the SBS-maleic anhydride graft copolymer with a graft rate of 7.0%wt.
Embodiment 3
[0017] Put 50ml of xylene in the autoclave, add 10g of SBS resin, 1.5g of maleic anhydride, 150mg of BPO and 1.5ml of α-methyl methacrylate, tighten the lid of the autoclave and place it in an oven at 160°C for 7 hours. Then cool with water, open the autoclave, pour the solution into 300ml of acetone, stir (rotating speed 200 rpm) on a magnetic stirrer for 1 hour, to remove unreacted substances, then suction filter, the powder obtained by suction filtration After drying in a vacuum oven at 80°C for 12 hours, an SBS-maleic anhydride graft copolymer with a graft rate of 10.0%wt was obtained.
[0018] The SBS-g-MAH prepared by the method of the present invention is used as a compatibilizer for SBS and nylon (PA) blending, so that the flexibility of the blend is greatly improved; the prepared SBS-g-MAH is used as a blend of SBS and polyester The mixed compatibilizer makes the flexibility of the composite significantly improved.
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