Strong-acid-and-alkali-resistant composite pipe made of glass fiber reinforced plastic regenerated material and production method of strong-acid-and-alkali-resistant composite pipe

Abstract

The invention discloses a strong-acid-and-alkali-resistant composite pipe made of a glass fiber reinforced plastic regenerated material and a production method of the strong-acid-and-alkali-resistantcomposite pipe. The composite pipe is composed of an outer layer and an inner liner layer. The outer layer comprises, by weight, 10-20 parts of resin, 23-30 parts of gravel, 25-30 parts of quartz sandor river sand, 10-40 parts of glass fiber reinforced plastic particle waste and / or glass fiber reinforced plastic powder waste, a curing agent of which the additive amount is 1-3% of the weight of the resin, an accelerant of which the additive amount is 1-3% of the weight of the resin and pigment of which the additive amount is 2-8% of the weight of the resin. The inner liner layer comprises, byweight, 10-50 parts of pure vinyl polymer or o-benzene resin and 50-90 parts of quartz powder. According to the strong-acid-and-alkali-resistant composite pipe and the production method, the glass fiber reinforced plastic particle waste and / or glass fiber reinforced plastic powder waste are / is used as one of the raw materials for preparing the composite pipe, so that the composite pipe is economical, environmentally-friendly, excellent in performance and convenient to produce; and meanwhile, by the adoption of the inner liner layer prepared from pure vinyl polymer or o-benzene resin and quartzpowder, the composite pipe has the functions of strong acid and alkali resistance and corrosion resistance.

Description

technical field [0001] The invention belongs to the field of concrete pipeline materials, and in particular relates to a strong acid and strong alkali resistant composite pipe made of recycled glass fiber reinforced plastics and a preparation method thereof. Background technique [0002] In today's world where natural resources are decreasing and energy is relatively scarce, the recycling and reuse of resources is of special significance. For decades, FRP has been widely used in various industries due to its light weight, high strength, corrosion resistance and many other excellent properties. The amount of old FRP products and other wastes is gradually increasing. In addition, FRP is corrosion-resistant and not easy to be weathered naturally. At present, most of its wastes are landfilled as construction waste or domestic waste. There are also methods of incineration or cracking in foreign countries. The environment is highly polluted. Therefore, it is a direction worthy o...

AI Technical Summary

Problems solved by technology

However, due to the material reasons of traditional concrete pipes, the inner wall is rougher than other pipes, water-permeable, not corrosion-resistant, and the interface is easy to leak, which greatly affects the use of concrete pipes and shortens the working life.

Therefore, there are alternative products on the market, such as glass fiber reinforced plastic pipes, plastic double-wall corrugated pipes, plastic winding pipes, polyethylene steel belt corrugated pipes, etc., but in practical applications, these pipes have obvious limitations, such as high cost , low strength to withstand internal and external pressure, delamination of plastic and steel strips, corrosion of steel strips and other defects

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