Controlled degradation cultivation pot and preparation method thereof

Abstract

The present invention discloses a degradation-controllable breeding pot, which is mainly prepared from the following raw materials by weight: 100 parts of tapioca starch, 30-50 parts of modified plant fiber, 50-60 parts of polyvinyl alcohol, 40-45 parts of a plasticizer, and 0.5-0.8 part of a cross-linking agent, wherein the modified plant fiber comprises silane coupling agent modified sisal fiber and potassium permanganate grafted modified banana fiber according to a weight ratio of 5:2, the plasticizer comprises tributyl citrate, dioctyl phthalate and glycerol according to a weight ratio of 3:1:2, and the cross-linking agent is maleic anhydride. The preparation method comprises: carrying out high mixing on various raw materials, mixing, carrying out pressing molding, and carrying out ultraviolet irradiation treatment on the obtained semi-finished product. According to the present invention, the breeding pot has advantages of wide raw material source, high starch addition amount, low production cost, excellent mechanical property, good degradation performance, and the like.

Description

technical field [0001] The invention relates to the field of cultivation pots. More specifically, the invention relates to a controllable degradation cultivation pot and a preparation method thereof. Background technique [0002] Starch is a natural renewable material with abundant resources and low price, and is easily eroded by microorganisms, and finally metabolized into water and carbon dioxide. Therefore, it has excellent biodegradability and is suitable as a raw material for biodegradable materials. Starch-based degradable plastics are currently the most promising class of degradable plastics. However, the existing starch-based degradable plastics exist: (1) The amount of starch added is low, and the production cost is high: due to the strong hydrophilicity of starch, the compatibility with most general-purpose resins is very poor, resulting in a significant increase in the mechanical properties of the material. In order to ensure the end-use performance of starch-ba...

AI Technical Summary

Problems solved by technology

However, the existing starch-based degradable plastics exist: (1) The amount of starch added is low, and the production cost is high: due to the strong hydrophilicity of starch, the compatibility with most general-purpose resins is very poor, resulting in a significant increase in the mechanical properties of the material. In order to ensure the end-use performance of starch-based plastic products, the general solution is to reduce the amount of starch added, but this will lead to higher product costs and slower degradation; (2) Source of raw materials: existing Starch-based degradable plastics mostly use starch produced from food as raw materials, such as corn starch, wheat starch, rice starch, sweet potato starch or potato starch, and there is a conflict between industry and people competing for food

In order to solve the above problems, some scholars have reported the preparation of degradable plastics with a mixture of starch and plant fibers, but the interface bonding effect between plant fibers and starch materials is poor, so that plant fibers cannot be uniformly dispersed in starch materials, and the mechanical properties are poor. question

Images