Preparation process of anti-ultraviolet electric insulating tube

Abstract

The invention discloses a preparation process of an anti-ultraviolet electric insulating tube. The preparation process of the anti-ultraviolet electric insulating tube is characterized by comprising the following steps that 1, PVC 15-50%, magnesium hydroxide 15-50%, nano calcium carbonate 20-55%, an initiator 0.1-2.0%, an antioxidant 0.05-1.0%, calcium stearate 0.1-1% and an ultraviolet absorber 30-40% are adopted by weight, wherein the ultraviolet absorber is slurry prepared from chlorinated benzotriazole ultraviolet absorbent according to weight parts and is uniformly applied to the upper surface of a base tube to form a function layer; 2, the coated base tube is subjected to thermal curing and photocuring to complete preparation, wherein the thermal curing temperature is 80-120 DEG C, the time is 10-30 seconds, the photocuring strength is 80-120 W/cm, the dosage is 100-400 J/cm<2>, and the irradiation time is 5-20 seconds. The formula is improved, and the problem that base tube films in the prior art are colored and accordingly a visual effect is influenced is solved by adopting a method including the steps of mixing an ultraviolet absorbent and a base tube functional layer masterbatch, performing heating and melting and then performing film-drawing forming to obtain base tube films.

Description

technical field [0001] The invention relates to a preparation process of an anti-ultraviolet electric power insulating tube. Background technique [0002] During transportation and use, the surface of the electrical insulation pipe is easily damaged by contact pollution, scratches, cracks, etc., so it is usually necessary to wrap or cover the surface with packaging materials to prevent it from pollution and damage. These materials that need to be protected, such as plastics, are easily damaged by ultraviolet rays, and packaging protection materials with anti-ultraviolet functions need to be used. [0003] However, the existing electrical insulating tubes have poor heat sealing performance, low thermal shrinkage rate, are not easy to recycle, and their mechanical properties cannot meet the needs of the industry. Contents of the invention [0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a preparatio...

AI Technical Summary

Problems solved by technology

[0003] However, the existing electrical insulating tubes have poor heat sealing performance, low thermal shrinkage rate, are not easy to recycle, and their mechanical properties cannot meet the needs of the industry.