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Polytetrafluoroethylene modified polyvinyl chloride paint

A polytetrafluoroethylene and polyvinyl chloride technology, used in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of brittle life of the coating film, poor corrosion resistance, and thin single-layer coating thickness.

Inactive Publication Date: 2010-02-17
ZHEJIANG YONGGUWEIHUA COATING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the common problems in anti-corrosion coatings, such as poor corrosion resistance, thin single-layer coating thickness, brittle coating film and short service life, Zhejiang Yonggu Weihua Coatings Co., Ltd. and the Corrosion and Protection Research Office of Zhejiang University of Technology jointly developed a A new type of coating, which introduces polytetrafluoroethylene resin with excellent corrosion resistance and vinyl acetate resin, epoxy resin, acrylic resin, fluorophosphorus iron, etc. New PTFE-modified polyvinyl chloride coating with excellent corrosion resistance and impact resistance, convenient construction and long service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] 1. Preparation of mixed resin glue:

[0082] First add 5-8 parts by weight of polytetrafluoroethylene into 15-20 parts of dimethylacetamide, dissolve at room temperature, then add 5-9 parts of polyvinyl chloride resin and 3-5 parts of vinyl chloride resin together Put it into an appropriate amount of cyclohexanone solvent and raise the temperature to 60°C, stir and dissolve at the same time, mix it with the previously prepared polytetrafluoroethylene dimethylacetamide solution after cooling to room temperature, and stir evenly to obtain a composite resin glue. If it is used as a primer, add 5-10 parts of epoxy resin to the above glue; if it is used as a top coat, add 5-10 parts of acrylic resin to the glue, and mix well.

[0083] 2. Preparation of component A-1:

[0084] Add an appropriate amount of xylene solvent, 0.3-0.7 parts of anionic carboxylic acid polymer dispersant and 0.5-1.2 parts of bentonite anti-sedimentation agent into the mixed resin glue, and put in 10...

Embodiment 2

[0092] 1. Preparation of mixed resin glue:

[0093] First add 7 parts by weight of polytetrafluoroethylene to 19 parts of dimethylacetamide, dissolve at room temperature, then add 8 parts of polyvinyl chloride resin and 4 parts of vinyl chloride resin to an appropriate amount of cyclohexanone solvent And raise the temperature to 60°C, stirring and dissolving at the same time, after cooling to room temperature, mix with the previously prepared polytetrafluoroethylene dimethylacetamide solution, stir evenly to form a composite resin glue, such as a primer for the above glue Add 10 parts of epoxy resin to the glue; if it is used as a top coat, add 10 parts of acrylic resin to the glue and mix well.

[0094] 2. Preparation of component A-1:

[0095] Add an appropriate amount of xylene solvent, 0.5 parts of anionic carboxylic acid polymer dispersant and 1.1 parts of bentonite anti-sedimentation agent to the mixed resin glue, and after high-speed dispersion, put 14 parts of iron ox...

Embodiment 3

[0103] Application of polyvinyl fluoride modified polyvinyl chloride floor coating (FVC floor)

[0104] According to the anti-corrosion demand in the market, this invention also designed a ground anti-corrosion coating, the formula of which is:

[0105] Vinyl resin 70~80

[0106] PTFE resin 5-8

[0107] PVC resin 7-10

[0108] Barite powder 325# 5-8

[0109] Iron oxide red (or titanium dioxide) 5-8

[0110]White carbon black (or bentonite anti-settling agent) 1-2

[0111] Fluorocarbon modified polysiloxane defoamer 0.1-0.2

[0112] Styrene 3-5

[0113] Preparation process: first put polytetrafluoroethylene and polyvinyl chloride into the vinyl resin, disperse and stir evenly, then put in white carbon black, barite powder, ferric chloride red or titanium dioxide, and finally add styrene to adjust the viscosity.

[0114] The introduction of polytetrafluoroethylene and polyvinyl chloride resin in the coating can not only overcome the shrinkage stress of the vinyl resin dur...

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Abstract

The invention discloses a polytetrafluoroethylene modified polyvinyl chloride paint which comprises an A component and a B component, wherein the A component is divided into an A-1 component and an A-2 component, and the A-1 component is polytetrafluoroethylene modified polyvinyl chloride primer paint; the A-2 component is polytetrafluoroethylene modified polyvinyl chloride finishing paint; and the B component is an isocyanate addition product. The polytetrafluoroethylene modified polyvinyl chloride primer paint is prepared according to the weight ratio of A-1:B=6:1 and the polytetrafluoroethylene modified polyvinyl chloride finishing paint is prepared according to the weight ratio of A-2:B=12:1 before use. The paint has the characteristics of excellent corrosion resistance, weather resistance, oil resistance and water resistance, favorable application performance, and the like; and a paint film has long service life, is widely applied to industries of chemistry, pharmacy, petroleum, food, construction, and the like and can be also used as medium protective coating in the occasions of metal structures, concrete walls, terraces, and the like.

Description

1. Technical field [0001] The invention belongs to the technical field of industrial anticorrosion coatings, and is a two-component solvent-type polytetrafluoroethylene modified polyvinyl chloride coating (FVC). 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. Good flexibility, etc., but there are generally disadvantages 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 is Hua Paint Co., Ltd. and the anti-corrosion coating experts of Zhejiang University of Technology jointly developed a new type of anti-corrosion coating with excellent co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/06C09D127/18C09D163/00C09D133/00C09D7/12C09D5/08
Inventor 濮阳楠金如朋金辉
Owner ZHEJIANG YONGGUWEIHUA COATING
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