Plastic master batch, preparation method thereof and plastic

Abstract

The invention discloses a plastic master batch. The plastic master batch comprises, by weight, 10 to 50 parts of polyethylene resin, 10 to 70 parts of inorganic salt or oxide of alkali metal or alkaline earth metal, 5 to 45 parts of modified starch, 5 to 25 parts of polyethylene wax, 1 to 10 parts of zinc stearate, 1 to 8 parts of a coupling agent, 0.01 to 2.0 parts of a photosensitizer, 0.01 to 2.5 parts of a pro-oxidant and 0.02 to 3.0 parts of a degradation agent. The defects in the prior art are overcome, and the master batch with multiple degradation functions of light, moisture and biology is provided. The master batch disclosed by the invention is easy to degrade, good in formability, convenient to process, high in quality and low in price, and can be used for producing plastic products with excellent degradation thoroughness, degradation controllability and product stability.

Description

technical field [0001] The invention relates to the field of degradable plastic products, in particular, a degradable plastic masterbatch, a preparation method and plastic. Background technique [0002] Plastic is a polymer material composed of synthetic resins and fillers, plasticizers, stabilizers, lubricants, colorants and other additives. Due to the strong stability of plastic products, it takes hundreds or even hundreds of years in the natural environment. to degrade. Global plastic production exceeds 350 million tons per year, generating more than 100 million tons of plastic waste. [0003] Random discarding of plastic waste will pollute the environment, deep burial will encroach on the land, pollute the soil, and burning will pollute the air. These are not scientific methods of solving problems. [0004] With the country's increasing requirements for environmental protection, on January 19, 2020, the National Development and Reform Commission and the Ministry of Ec...

AI Technical Summary

Problems solved by technology

However, the above-mentioned products have many limitations: First, the degradation performance is limited, such as the widely used plastic products produced by photodegradable masterbatch, which cannot be induced in the absence of light (such as buried parts, garbage filling sites, etc.) degradation

Second, the price is high, which greatly increases the production cost and pushes up the price of plastic products.

Third, poor formability in the production process (such as blown film, wire drawing, injection molding, etc.) requires special processing equipment

Fourth, if the amount of addition is too low, it will be difficult to meet the needs of degradation. A large amount of addition will lead to an increase in cost, so the popularity is low. This is an important reason why the current production and consumption of degradable masterbatches have not reached the expected growth, which directly leads to It is difficult to promote degradable plastics, so it is an urgent need for the current plastics production industry to produce a degradable masterbatch that is easy to degrade, good in formability, easy to process, high in quality and low in price.