Production system of low temperature-sensitive adhesive for 3PP steel pipe corrosion preventing coating

Abstract

The invention relates to a production system of a low temperature-sensitive adhesive for 3PP steel pipe corrosion preventing coating. A primary production line comprises a primary reaction kettle; the upper part of the primary reaction kettle is connected with a metallocene PP tank, a copolymerization PP tank, an EVA tank, an APAO tank and a PVA tank through a feeding pipeline respectively; one side of the upper part of the primary reaction kettle is connected with a condenser pipe I through a condensing pipeline; the condenser pipe I is connected with a condenser pipe II; a secondary production line comprises a secondary reaction kettle; the upper part of the secondary reaction kettle is connected with an elevated tank, a styrene tank and a main antioxidant tank through a feeding pipeline respectively; the elevated tank is connected with an isoprene tank; a rutile TiO2 tank is connected with the feeding pipeline on the upper part of the secondary reaction kettle through an elevator; one side of the upper part of the secondary reaction kettle is connected with a condenser pipe III through a condensing pipeline. The production system is high in utilization rate and easy to operate, can produce a product with high stability, meets various standardized performance requirements, and can be applied to large-scale industrial production.

Description

technical field [0001] The invention relates to a polymer adhesive production system, in particular to a production system of 3PP adhesive for pipeline anticorrosion under special temperature conditions. Background technique [0002] With the development of our country's national economy and the continuous improvement of people's living standards, the demand for oil and natural gas is increasing day by day. For this reason, the country has increased the development of natural gas and offshore oil and gas resources in the west. Pipeline anti-corrosion technology has become increasingly important with the development of oil and natural gas pipeline engineering construction. In view of the current development of oil and gas development in harsh environments such as plateaus, deserts, and oceans, compared with 3PE structures, 3PP anti-corrosion coating structures are more effective at high temperatures. Lifespan (operating life of 30 years at 80°C), peel strength, indentation ha...

AI Technical Summary

Problems solved by technology

[0004] 1) Due to its high crystallinity and large crystal nucleus, PP has poor toughness, especially low temperature toughness.

Although the development of the copolymerization process has greatly improved the impact performance of the copolymerized PP, there are still problems of low heat distortion temperature and rigidity, especially the performance in terms of heat distortion temperature cannot meet the requirements of special environments

[0005] 2) At present, the production control of 3PP technology is complicated, and it is easy to produce a variety of bonding failure defects, and there is a risk of delamination between different material layers

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