| 摘要 |
The multi-layer sheet for an internal box of a refrigerator, which is prepared by a co-extrusion process, comprises an inner layer of an acrylonitrile/butadiene/styrene(ABS) copolymer having a weight-average molecular weight of 150,000 SIMILAR 300,000, which contains 10 SIMILAR 20% by weight of a butadiene rubber as per the ABS copolymer and 20 SIMILAR 45 % by weight of an acrylonitrile as per the matrix of styrene/acrylonitrile; and an outer layer of a styrene/acrylonitrile(SAN) copolymer having a weight-average molecular weight of 100,000 SIMILAR 200,000, which contains 20 SIMILAR 30 % by weight of an acrylonitrile. The multi-layer sheet of this invention may comprise a further inner layer of a modified ABS copolymer containing 5 SIMILAR 25 % by weight of a butadiene rubber as per the ABS resin and 35 SIMILAR 45 % by weight of an acrylonitrile as per the matrix of styrene/acrylonitrile. |
