Low-density polyethylene/corncob composite foamed sheet and preparation method therefor

Abstract

The invention discloses a low-density polyethylene / corncob composite foamed sheet and a preparation method therefor. The composite foamed sheet is prepared from the following raw materials in parts by weight: 88-102 parts of low-density polyethylene, 47-69 parts of full-starch plastics, 23-34 parts of corncobs, 28-42 parts of Miscanthus floridulus, 7-13 parts of chlorinated petrolatum, 24-37 parts of ramie stems, 5-10 parts of peat wax, 4-7 parts of glyceryl triacetyl ricinoleate, 2-4 parts of antimony penta(isooctyl thioglycolate), 15-25 parts of chestnut shells, 10-15 parts of glass fibers, 4-6 parts of aluminum phosphite, 15-20 parts of graphite crucible wastes, 5-10 parts of allophane, 10-15 parts of neopentyl glycol dibenzoate, 14-22 parts of white onyx and 20-30 parts of rice hulls. The foamed sheet prepared by the method is excellent in comprehensive performance, has relatively high mechanical strength and also has excellent heat resistance, corrosion resistance, impact resistance, wear resistance and heat preserving and insulating properties.

Description

technical field [0001] The invention relates to a PE foam board and a preparation method thereof, in particular to a low-density polyethylene / corncob composite foam board and a preparation method thereof. Background technique [0002] Polymer foam board is a polymer material with plastic or rubber as the basic component and contains a large number of bubbles. It has many excellent properties, such as light weight, heat insulation, sound absorption, high specific strength, etc., so it has been widely used in industry, agriculture, construction, transportation and other fields. Since the advent of polymer foamed boards, their uses have become more and more extensive, and their varieties have been continuously enriched. Among them, PE foamed boards are a relatively common polymer foamed board. Good, stable chemical properties, not susceptible to corrosion, good processing performance, easy to shape; cheaper price. [0003] In recent years, as the country vigorously develops e...

AI Technical Summary

Problems solved by technology

However, compared with the performance of foreign PE foam boards, there is still a big gap between the comprehensive performance of domestically produced PE foam boards.

[0004] Zeng Anran, Li Yunlong and others used emulsion polymerization to prepare styrene-grafted cellulose whiskers in their article "Study on the Properties of Styrene-Grafted Cellulose Whiskers Reinforced LDPE Composite Materials" and used them to reinforce low-density polyethylene. Ethylene (LDPE), which improves the Rasher strength, crystallization temperature and thermal stability of the composite material, but does not significantly improve the thermal insulation performance and sound absorption and sound insulation performance of the composite material