Aliphatic and aromatic copolyester foaming composition, aliphatic and aromatic copolyester foamed plate and sheet, and preparation methods of aliphatic and aromatic copolyester foamed plate and sheet

Abstract

The invention relates to the field of foaming materials, and discloses an aliphatic and aromatic copolyester foaming composition, an aliphatic and aromatic copolyester foamed plate, an aliphatic and aromatic copolyester foamed sheet, and preparation methods of the foamed plate and the foamed sheet. The composition comprises modified aliphatic and aromatic copolyester, a foam nucleating agent and an antioxidant, wherein the foam nucleating agent is a maleic anhydride-styrene-alpha-methylstyrene copolymer microsphere with a particle size of 500-1600 nm; the melt index of the modified aliphatic and aromatic copolyester at 190 DEG C under a load of 2.16 kg is 0.1-5 g / 10 min; and based on 100 parts by weight of the aliphatic and aromatic copolyester, the use amount of the foam nucleating agent is 0.01-10 parts by weight, and the use amount of the antioxidant is 0.01-3 parts by weight. The foamed board and the foamed sheet prepared from the aliphatic and aromatic copolyester foaming composition meet the environment-friendly requirement for controllable degradation, and are compact in foam holes, easy to slice, excellent in mechanical properties, simple in process, large in the adjustable range of multiplying power, good in heat preservation performance, low in production cost and suitable for large-scale production.

Description

technical field [0001] The invention relates to the field of foam materials, in particular to an aliphatic aromatic copolyester foam composition, aliphatic aromatic copolyester foam boards and sheets and a preparation method thereof. Background technique [0002] Plastic products have the advantages of strong stability, light weight, and low production cost, so they are deeply favored by people. In recent decades, the plastic industry has developed rapidly, and the use of a large number of plastic products, especially disposable plastic products, has brought great convenience to human life. However, due to the chemical stability of general-purpose plastics (PE, PS, PVC, etc.), when they are abandoned, they will exist stably in the environment for a long time, resulting in the accumulation of a large amount of plastic waste in the environment, which brings serious harm to the environment. , Such as white pollution, agricultural white cancer and other issues. With the increa...

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the low cell density of the aliphatic aromatic copolyester foamed sheet caused by the existence of inorganic nucleating agents and poor compatibility with the polymer matrix in the prior art, which is not easy to slice, has poor mechanical properties and uncontrollable density To solve the problem, provide a kind of aliphatic aromatic copolyester foaming composition, aliphatic aromatic copolyester foaming plate and sheet and preparation method thereof, the aliphatic aromatic copolyester foaming composition prepared by the present invention Foam boards and sheets are controllable degradation in line with environmental protection requirements, dense cells, easy to slice, excellent mechanical properties, simple preparation process, wide adjustable range of magnification, good thermal insulation performance, low production cost and suitable for large-scale production

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