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Paint for sealing strip and preparation method thereof

A technology for sealing strips and coatings, applied in the field of coating and preparation of sealing strips, can solve the problems of uneven curing of coatings, complicated coating operations, endangering human health, etc., and achieve excellent high temperature yellowing resistance, convenient use and easy to use. stored effect

Active Publication Date: 2014-05-21
SHANGHAI 3N CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] First, since solvent-based coatings contain volatile solvents, organic solvents (VOC) such as toluene and xylene volatilize during use, causing pollution to the environment inside the car and endangering human health
[0004] Second, the storage time of the two-component coating is short, the coating operation is complicated, and the shelf life is short
At this time, the coating should maintain the original color without yellowing or falling off, while the existing solvent-based coatings cause yellowing of the coating due to the incomplete sealing of the isocyanate group in the curing agent isocyanate; the coating of the two-component coating is cured Uneven, prone to brittle cracking and falling off

Method used

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  • Paint for sealing strip and preparation method thereof

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Experimental program
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Effect test

Embodiment Construction

[0042] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0043] Please refer to figure 1 146.41g of polyurethane resin, 52.13g of silicone resin, 83.07g of acrylic resin, 4.88g of dispersant, and 2.91g of ultraviolet absorber were added to the reaction kettle, and the mixture was stirred and mixed at a stirring speed of 1000r / min for 20 minutes. , where the dispersant and UV absorber need to be added linearly with stirring. The dispersant can be a copolymer solution with pigment adsorption groups or a high molecular weight block copolymer solution with pigment affinity groups, such as BFK pigment special Dispersant.

[0044] Then, 4.36 g of blocked isocyanate and 5 g of thickener were added, stirred and dispersed for 60 minutes. Wherein the thickener is added slowly with stirring, and the thickener can be carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, acrylic alkali swellin...

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Abstract

The invention discloses paint for a sealing strip and a preparation method of the paint. The paint comprises film forming materials and solvents, wherein the film forming materials comprise polyurethane resin. The paint for the sealing strip, provided by the invention, has the advantages that the flexibility and the anti-aging performance of the coating are enhanced, in addition, the coating hardness, the solvent resistance and the yellowing resistance are enhanced through the added acrylic resin, the coating weatherability, the heat resistance, the flexibility and the stain resistance capability are enhanced through the added organic silicon resin, the adhesive force of the paint on the surface of the sealing strip and the coating weatherability are enhanced through the added epoxy resin, water solvents are used for replacing organic solvents, and the environmental-friendly effect is realized.

Description

technical field [0001] The invention relates to a paint and a preparation method thereof, in particular to a paint used for sealing strips and a preparation method thereof. Background technique [0002] Automobile sealing strip is one of the important parts of the automobile. It has the functions of sound insulation, dustproof and shock absorption, and maintains and maintains a quiet, clean and comfortable environment in the automobile. Car sealing strip is also an important part of car decoration. The main solvent-based coating and the two-component coating of the existing automobile sealing strip are used as the wear-resistant coating of the sealing strip. Has the following disadvantages: [0003] First, since solvent-based coatings contain volatile solvents, organic solvents (VOC) such as toluene and xylene volatilize during use, causing pollution to the environment inside the car and endangering human health. [0004] Second, the storage time of the two-component coat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D133/00C09D163/00C09D183/00C09D7/12
Inventor 顾真贵
Owner SHANGHAI 3N CHEM