Preparation method of insect-proof low-density flame-retardant multi-interface light diffusion polypropylene material

Abstract

The invention relates to a preparation method of an insect-proof low-density flame-retardant multi-interface light diffusion polypropylene material, which comprises the following steps: firstly, extruding 1, 7, 7-trimethylbicyclo [2, 2, 1] heptane-2-ketone, polypropylene, nylon 1012, a flame retardant and minerals through double screws to form a base material; then putting the base material into a foaming kettle, and foaming the base material in a pressurized foaming manner to prepare the insect-proof low-density flame-retardant multi-interface light diffusion polypropylene material. Wherein pressurizing and foaming are as follows: 3-(N-n-butyl acetamido)-ethyl propionate and supercritical carbon dioxide are filled into a foaming kettle; the foaming diameter of the insect-proof low-density flame-retardant multi-interface light diffusion polypropylene material is 0.3 to 0.7 mu m, and the foaming ratio is 1.2 to 1.4. According to the invention, the insect repellant is protected by using the micro-bubbles and the adsorption material, and a foaming process is adopted, so that the persistence of the insect repelling effect is realized, the haze of the material can be realized through multiple interfaces of the micro-bubbles, and the diffusion effect of the material is realized without using a light diffusion agent.

Description

technical field [0001] The invention belongs to the technical field of light-diffusing polypropylene, and relates to a preparation method of an insect-proof low-density flame-retardant multi-interface light-diffusing polypropylene material. Background technique [0002] Due to the development of LED light energy utilization technology, its light efficiency, brightness and other indicators have been continuously improved. At the same time, in household and commercial applications, due to the light repelling properties of various flying insects, flying insects often gather around the lamps used, and at the same time fly into the interior of the lamps to cause dimming of the lamps or other safety problems. The conventional way to solve this problem is to directly add insecticides such as tetramethrin into the corresponding light-diffusing polypropylene. The boiling point of insecticides is relatively low, and the processing temperature of polypropylene is relatively high, which...

AI Technical Summary

Problems solved by technology

At the same time, in household and commercial applications, due to the light-repelling properties of various flying insects, flying insects often gather around the lamps used, and at the same time fly into the interior of the lamps to cause dimming of the lamps or other safety problems

The conventional way to solve this problem is to directly add insecticides such as tetramethrin into the corresponding light-diffusing polypropylene. The boiling point of insecticides is relatively low, and the processing temperature of polypropylene is relatively high, which leads to the process of forming and cooling. The active ingredient volatilizes too much at high temperature and the insect repellent effect is reduced, and the duration is short

[0003] Patent Publication No. CN 110483888 A A light-diffusing polypropylene material capable of repelling insects and its preparation method, which uses insect repellents such as deltamethrin, tetramethrin, permethrin, etc. to prepare light-diffusing materials capable of repelling insects, Its processing temperature is as high as 180°C, which inevitably causes the decomposition and volatilization of related substances, resulting in a short period of actual use effect

In other prior art, such as Patent Publication No. CN111499972A, a high-temperature-resistant, low-volatility, pest-proof, halogen-free flame-retardant PP material and its preparation method, CN107778658A, a wear-resistant and insect-repelling polypropylene film, and CN104005178A, a polypropylene agricultural biological nonwoven Cloth and its preparation method, although both have insect repellent function, but it belongs to the film or non-woven field, or partially solves the problem of insect repellent or insect repellent heat-resistant volatilization processing, but its transparency or haze index and material strength Cannot be used as a light diffusing material

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