Novel degradable composite plastic and preparation method thereof

Abstract

The invention relates to novel degradable composite plastic, comprising, by weight, 40-60 parts of polypropylene compound, 15-45 parts of micron plant short-staple, 5-15 parts of fillers, 3-7 parts ofcompatilizers, 0.4-0.6 part of antioxidant, 0.3-0.5 part of lubricant, 3-5 parts of antibacterial additives and 2-3 parts of biodegradable agents. Under cooperation of photocatalytic degradation andmicro-biological degradation, the composite plastic has excellent degradation performance, mechanic performance and mechanical property. A preparation method of the novel degradable composite plasticincludes pretreatment, mixing with stirring, mixing with a mixer, extrusion and granulation, cooling and dehydration, and the like. Components of the degradable composite plastic are mixed more dispersively By the preparation method, and thus, quality of the finished product is better.

Description

technical field [0001] The invention relates to the technical field of plastic materials, in particular to a novel degradable composite plastic and a preparation method thereof. Background technique [0002] The current plastics after use are mainly incinerated, buried or recycled into the same type of plastics for recycling, and most of them are disposed of by incineration or burial. Incineration not only pollutes the environment, but also aggravates the greenhouse effect. , causing the ozone layer to be destroyed, which in turn poses a threat to human health; and the way of burial will not only pollute the groundwater, but also cause unsolvable difficulties for the available arable land, thereby reducing farmers' income and people's quality of life. [0003] In order to solve this problem, researchers at home and abroad have carried out research on degradable plastics. At present, degradable plastics are mainly divided into biodegradable plastics and photodegradable plasti...

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Problems solved by technology

[0002] The current plastics are mainly incinerated, buried or recycled into the same type of plastics for recycling after use, and most of them are disposed of by incineration or burial. Incineration not only pollutes the environment, but also aggravates the greenhouse effect. , so that the ozone layer is destroyed, which in turn poses a threat to human health; and the way of burial will not only pollute the groundwater, but also cause insoluble difficulties for the available arable land, thereby reducing farmers' income and people's quality of life

[0003] In order to solve this problem, researchers at home and abroad have carried out research on degradable plastics. At present, degradable plastics are mainly divided into biodegradable plastics and photodegradable plastics. Photodegradable plastics need to add photosensitizers. Stop the degradation reaction (such as being landfilled). In the actual processing process, the degradation rate is not high. Biodegradable plastics are doped with a relatively large amount of starch. The degradability of starch is used to improve the degradability of plastics, but starch Excessive content has a great impact on the thermoplastic properties, strength and tensile properties of plastics, and it is difficult to meet the use requirements of conventional plastic products

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