Toughening color master batch for high impact polystyrene, composite board and liner of refrigeration equipment

Abstract

The invention discloses a toughening color master batch for high impact polystyrene, a composite board and a liner of refrigeration equipment. The toughening color master batch for the high impact polystyrene comprises the following components in part by weight: 25 to 85 parts of toughening agent, 10 to 50 parts of softener, 10 to 50 parts of base material and 5 to 35 parts of toner. According to the toughening color master batch for the high impact polystyrene, a carrier in a conventional color batch is replaced by the toughening agent, so that the toughening color master batch has the effect of toughening the high impact polystyrene in the process of dying the high impact polystyrene. According to the high impact polystyrene composite board, the strength is obviously improved, so that the thickness of the board can be reduced and the using amount of materials can be reduced; return material proportion in an extruded board material can be obviously improved, even the composite board can totally adopt a return material; by controlling the addition ratio of the toughening color master batch, the performance of the board can be regulated so as to meet different requirements; due to low density of the toughening color master batch, the weight of the liner formed by the composite board with the same size can be reduced.

Description

technical field [0001] The invention relates to the field of refrigeration equipment manufacturing, in particular to a toughened color masterbatch for high-impact polystyrene, a high-impact polystyrene composite plate, and a refrigeration equipment inner vessel for preparing the inner vessel of the refrigeration equipment. Background technique [0002] The main materials for refrigerator liners are acrylonitrile-styrene-butadiene copolymer (ABS) and high-impact polystyrene (HIPS). Among them, the cost of the ABS liner is relatively high, and the ordinary ABS liner is not resistant to hydrogenated fluoroalkane (HFC) foaming agents (for example, HFC-365mffc, HFC-245fa, HFC-134a, HFC-227ea, HFC-236fa, HFC- 152a, HFC-125, etc.) or the mixed foaming system containing HFC foaming agent is corroded, which is easy to cause defects such as cracking, and there is a high quality risk. On the other hand, ordinary HIPS extruded board grade materials have improved resistance to the above...

AI Technical Summary

Problems solved by technology

Among them, the cost of the ABS liner is relatively high, and the ordinary ABS liner is not resistant to hydrogenated fluoroalkane (HFC) foaming agents (for example, HFC-365mffc, HFC-245fa, HFC-134a, HFC-227ea, HFC-236fa, HFC- 152a, HFC-125, etc.) or the mixed foaming system containing HFC foaming agent is corroded, which is easy to cause defects such as cracking, and there is a high quality risk

On the other hand, ordinary HIPS extruded board grade materials, although the resistance to the above-mentioned foaming agents has been improved, there is still a certain degree of risk of inner liner cracking

In addition, HIPS extruded board materials are usually composed of HIPS natural color materials, masterbatches, and recycled materials. Due to the influence of a large amount of fillers in recycled materials and color masterbatches, the mechanical properties of the board, such as impact strength and elongation at break, are reduced, so the risk of cracking is relatively high.

In order to reduce the risk of cracking, the thickness of the sheet needs to be increased, and the proportion of recycled material needs to be properly controlled, which will lead to an increase in cost