Polyvinylidene fluoride modified polyvinyl chloride coating

A polyvinylidene fluoride and polyvinylidene fluoride resin technology, applied in anti-corrosion coatings, coatings, etc., can solve problems such as low adhesion, thin paint film, and poor corrosion resistance

Active Publication Date: 2014-09-17
ZHEJIANG YONGGUWEIHUA COATING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the anti-corrosion coatings commonly used in the market include perchlorethylene coatings, high-chlorinated polyethylene coatings, PF-01 Yingdan polyvinyl chloride coatings, chlorinated rubber coatings, etc. They have their own advantages, some have better corrosion resistance, and some have better corrosion resistance. The flexibility is good, etc., but there are generally shortcomings such as thin and brittle paint film, low adhesion, many coats, short service life, and some poor corrosion resistance. Based on the existence of these problems, Zhejiang Yonggu Weihua Coatings Co., Ltd., together with anticorrosion coating experts from Tsinghua University and Zhejiang University of Technology, has developed a new type of anticorrosion coating - polyvinylidene fluoride modified polyvinylidene fluoride Vinyl chloride coating, that is, FVC anti-corrosion coating, has been well received by users and has achieved good social and economic benefits

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] (1) Preparation of polyvinylidene fluoride resin glue: put 13.5 parts of dimethylacetamide into a reaction kettle with a kettle temperature of 85°C, slowly and evenly add 4.0 parts of polyvinylidene fluoride at a stirring speed of 250 rpm Vinyl fluoride resin, continue to stir for 30 minutes after adding, when the material is colorless and transparent, it is polyvinylidene fluoride resin glue;

[0014] (2) Preparation of modified polyvinyl chloride resin glue: first plasticize polyvinyl chloride resin: put 7.0 parts of polyvinyl chloride resin into a batching cylinder with a high-speed centrifugal device, and add 0.7 parts of dioctyl phthalate at the same time Plasticizer, the resin is plasticized under high-speed centrifugation. When the temperature rises to 80°C, the centrifuge is shut down, and the cooled material is plasticized polyvinyl chloride resin; another 33.0 parts of cyclohexanone is put into the reaction kettle, and the temperature is raised to 80°C, put th...

Embodiment 2

[0019] (1) Preparation of polyvinylidene fluoride resin glue: put 13.5 parts of dimethylacetamide into a reaction kettle with a kettle temperature of 85°C, slowly and evenly add 4.0 parts of polyvinylidene fluoride at a stirring speed of 250 rpm Vinyl difluoride resin, continue to stir for 30 minutes after adding, when the material is colorless and transparent, it is polyvinylidene fluoride resin glue;

[0020] (2) Preparation of modified polyvinyl chloride resin glue: first plasticize polyvinyl chloride resin: put 7.0 parts of polyvinyl chloride resin into a batching cylinder with a high-speed centrifugal device, and add 0.7 parts of dioctyl phthalate at the same time Plasticizer, the resin is plasticized under high-speed centrifugation. When the temperature rises to 80°C, the centrifuge is shut down, and the cooled material is plasticized polyvinyl chloride resin; another 33.0 parts of cyclohexanone is put into the reaction kettle, and the temperature is raised to 80°C, put ...

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Abstract

The invention discloses a polyvinylidene fluoride modified polyvinyl chloride coating. The polyvinylidene fluoride modified polyvinyl chloride coating comprises a component A and a component B, wherein the component A is mainly formed by a polyvinyl chloride resin, dicapryl phthalate, a polyvinylidene fluoride resin, dimethyl formamide, a modified high chlorinated polyethylene resin, a xylene formaldehyde resin and fluorocarbon modified polysiloxane; and the component B is an isocyanate adduct. The polyvinylidene fluoride modified polyvinyl chloride coating is prepared according to a weight ratio of the component A to the component B of 100.0:9.0-12.0 before use, and is called an FVC anticorrosive coating for short. The coating has the advantages of good matrix combination force, ultrahigh weatherability, excellent chemical medium resistance, high temperature tolerance and the like, can be used at 120-150DEG C for a long term, and can be widely used in engineering buildings, equipment members and production devices of the chemical engineering industry, the petroleum industry, the pharmacy industry, the food industry and the like, the service life of the coating can reach above 10 years, and the coating is deeply popular with users, and has high economic and social benefits.

Description

1. Technical field [0001] The invention belongs to the field of polymer material science and industrial anti-corrosion engineering. It is a two-component solvent-based polyvinylidene fluoride modified polyvinyl chloride anti-corrosion coating, referred to as FVC anti-corrosion coating, which has temperature resistance, weather resistance and chemical resistance. Medium corrosion and other characteristics. 2. Technical background [0002] At present, the commonly used anti-corrosion coatings in the market include perchlorethylene coatings, high-chlorinated polyethylene coatings, PF-01 Yingdan polyvinyl chloride coatings, chlorinated rubber coatings, etc. They have their own advantages, some have better corrosion resistance, and some have better corrosion resistance. The flexibility is good, etc., but there are generally shortcomings such as thin and brittle paint film, low adhesion, many coats, short service life, and some poor corrosion resistance. Based on the existence of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/06C09D127/16C09D5/08C09D7/12
Inventor 金辉金如朋
Owner ZHEJIANG YONGGUWEIHUA COATING
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