Recycled Material Based on in-situ compatibilization and chain extension and preparation method therefor
A recycled material based on in-situ compatibilization and chain extension is mainly prepared from the following raw materials in parts by mass: 30-70 parts of waste HIPS, 30-70 parts of waste PP, 2-6 parts of POE, 0.1-0.4 part of an alkylation reaction catalyst, 0.1-0.3 part of a co-catalyst, and 2-8 parts of a macromolecular chain extender. Further, a preparation method for the recycled material based on in-situ compatibilization and chain extension is provided.
1 . A recycled material based on in-situ compatibilization and chain extension, wherein the recycled material is mainly prepared from the following raw materials in parts by mass:
30-70 parts of waste high-impact polystyrene;
30-70 parts of waste polypropylene;
2-6 parts of polyolefin elastomer;
0.1-0.4 part of an alkylation reaction catalyst;
0.1-0.3 part of a co-catalyst; and
2-8 parts of a macromolecular chain extender.
2 . The recycled material based on in-situ compatibilization and chain extension according to claim 1 , wherein the waste high-impact polystyrene is a flaky material obtained from waste high impact polystyrene which is crushed and homogenized.
3 . The recycled material based on in-situ compatibilization and chain extension according to claim 1 , wherein the waste polypropylene is a flaky material obtained from waste polypropylene which is crushed and homogenized.
4 . The recycled material based on in-situ compatibilization and chain extension according to claim 1 , wherein the polyolefin elastomer is a novel ethylene-octene copolymer elastomer material.
5 . The recycled material based on in-situ compatibilization and chain extension according to claim 1 , wherein the alkylation reaction catalyst is anhydrous aluminum chloride.
6 . The recycled material based on in-situ compatibilization and chain extension according to claim 1 , wherein the co-catalyst is styrene.
7 . The recycled material based on in-situ compatibilization and chain extension according to claim 1 , wherein the macromolecular chain extender is a high-impact polystyrene grafted glycidyl methacrylate.
8 . A preparation method for the recycled material based on in-situ compatibilization and chain extension according to claim 1 , comprising the following steps:
mixing the waste high-impact polystyrene in 30-70 parts, the waste polypropylene in 30-70 parts, the polyolefin elastomer in 2-6 parts, the alkylation reaction catalyst in 0.1-0.4 part, and the co-catalyst in 0.1-0.03 part to obtain a mixed material;
adding the mixed material from a main feeding device of a twin screw extruder and melting the mixed material;
controlling a screw speed to 40 to 80 rpm;
adding the macromolecular chain extender in 2-8 parts to a fifth zone of a processing middle section of the twin screw extruder;
blending with the molten mixed material; and
extruding, drawing, cooling and pelletizing to obtain the recycled material based on in-situ compatibilization and chain extension.
9 . The preparation method for the recycled material based on in-situ compatibilization and chain extension according to claim 8 , wherein a processing temperature zone of the twin screw extruder is 175 to 235° C.
10 . The preparation method for the recycled material based on in-situ compatibilization and chain extension according to claim 8 , wherein temperatures of eight processing zones of the twin screw extruder are: 180° C., 180° C., 185° C., 185° C., 235° C., 235° C., 230° C., and 230° C. in sequence.