Composition for environmentally friendly door and window materials excellent in heat resistance and colorability
A composition and door and window technology, which is applied in the field of environment-friendly door and window materials and door and window materials using the composition, can solve the problems of building material distortion, reduced weather resistance of pigments, discoloration, etc., and achieve excellent physical properties and mechanical physical properties. The effect of high properties and good extrusion processability
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[0050] Preparation of SAN
[0051] After heating the temperature of the bulk polymerization reaction tank to 150°C, 66 parts by weight of styrene, 44 parts by weight of acrylonitrile, 10 parts by weight of toluene, and 0.1 parts by weight of tert-dodecyl sulfide as a molecular weight regulator were added. The alcohol is first miscible on the line and continuously added to the polymerization tank for polymerization. When the conversion rate reached 70%, the polymer material was transferred into the box, heated to 220°C, and transferred to the devolatilizer, and the unreacted monomer and toluene were removed by vacuum at 720mmHg. The product thus obtained is a SAN copolymer resin with a weight average molecular weight of 180,000 and a ratio of styrene and acrylonitrile of 66:34.
[0052] PMI-SAN preparation
[0053] Mix 20 parts by weight of phenylmaleimide (PMI) and 20 parts by weight of acrylonitrile (AN) in a separate box, and mix 50 parts by weight of α-methylstyrene (AMS) and ...
Embodiment 1~6
[0055] As shown in Table 1, adjust the mixing ratio of SAN copolymer resin, PMI-based SAN resin and AABS resin, and add 0.3 parts by weight of antioxidant (Songnox 6260 from SONGWON Industry) and 0.3 parts by weight of UV absorber (Ciba Fine TINUVIN-P from Ciba Special Chemicals) and 4 parts by weight of titanium dioxide are uniformly mixed, and then the prepared resin is pelletized. After that, the pelletized synthetic resin composition was extruded under the extrusion conditions described below to prepare door and window profiles. The physical properties of the test pieces prepared under the same conditions are shown in Table 1.
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