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A kind of water-based wood sealing primer and preparation method thereof

A sealing primer, water-based technology, used in primers, coatings, etc., can solve the problems of low hardness, inconvenient construction, poor sandability, etc., to improve crosslinking density and water resistance, excellent anti-bleeding, good sanding effect

Active Publication Date: 2021-05-14
CARPOLY CHEM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water-based wood sealing primer provided by the present invention overcomes the shortcomings of the traditional cationic water-based wood sealing primer such as low hardness, poor sanding performance, and inconvenient construction, and does not need to use two-component post-addition of polyisocyanate, which is a good solution to the current water-based wood sealing primer. Contradictory issues of anti-bleeding performance and construction convenience of sealing primer

Method used

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  • A kind of water-based wood sealing primer and preparation method thereof
  • A kind of water-based wood sealing primer and preparation method thereof
  • A kind of water-based wood sealing primer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] 1. Water-based wood sealing primer, calculated by important percentage:

[0055] Table 1a Components and content of water-based wood sealer primer

[0056]

[0057]

[0058] 2. The preparation method of water-based wood sealing primer

[0059] (1) Add water-based self-crosslinking acrylic emulsion ROSHIELD 3311 into container 1 with stirring device, start stirring at a low speed of 400rpm, add pH regulator AMP-95, defoamer Tego-810, and 0.1 part of thickener Tego -3030 and 0.85 water, keep stirring at a low speed for 5 minutes, then adjust the speed to a high speed of 1500rpm, add titanium dioxide CR-826, and keep stirring at a high speed for 15 minutes;

[0060] (2) Take another set of container 2 with stirring device, add dipropylene glycol butyl ether, dipropylene glycol methyl ether, emulsifier BD-405 and 10 parts of water in sequence, adjust the speed to high speed 1500rpm and keep stirring at high speed for 25 minutes, then stop stirring Obtain the film-fo...

Embodiment 2

[0075] 1. Water-based wood sealing primer, calculated by important percentage:

[0076] Table 2a Components and content of water-based wood sealer primer

[0077]

[0078] 2. The preparation method of water-based wood sealing primer

[0079] (1) Add the water-based self-crosslinking acrylic emulsion Setaqua 6718 into the container 1 with a stirring device, turn on the low-speed stirring at 300rpm, and then add the pH regulator DMEA, the defoamer BYK-028, and 0.1 part of the thickener Tego-3060 , keep stirring at a low speed for 5 minutes, then adjust the speed to a high speed of 1200rpm, add titanium dioxide R-900, keep stirring at high speed for 10 minutes;

[0080](2) Take another set of container 2 with a stirring device, add dipropylene glycol butyl ether, dipropylene glycol methyl ether and 10 parts of water in sequence, adjust the rotating speed to a high speed of 1200rpm and keep stirring at a high speed for 20 minutes, then stop stirring to obtain a film-forming ...

Embodiment 3

[0092] 1. Water-based wood sealing primer, calculated by important percentage:

[0093] Table 3a Components and content of water-based wood sealer primer

[0094]

[0095] 2. The preparation method of water-based wood sealing primer

[0096] (1) Water-based self-crosslinking acrylic emulsion Add 4401 into container 1 with a stirring device, start stirring at a low speed of 500rpm, add pH regulator TEA and defoamer TEGO-902W in turn, keep stirring at a low speed for 8 minutes, adjust the speed to a high speed of 1500rpm, add titanium dioxide Ningbo Xinfu NTR-606 , keep stirring at high speed for 15 minutes;

[0097] (2) Take another set of container 2 with a stirring device, add dipropylene glycol butyl ether and 10 parts of water in sequence, adjust the rotating speed to a high speed of 1200rpm and keep stirring at a high speed for 30min, then stop stirring to obtain a film-forming aid pre-dispersion, and then slowly This film-forming aid pre-dispersion liquid is added ...

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Abstract

The invention discloses a water-based wood sealing primer and a preparation method thereof. In terms of weight percentage, the components and contents of the sealing primer are as follows: cationic monomer modified water-based acrylic emulsion 30-50%, water-based self-crosslinking acrylic emulsion 20-40%, titanium dioxide 5-10%, internal crosslinking 0.2-2% of anti-bleeding additives, 0.5-3.5% of anti-bleeding additives, 1-3% of grinding aids, 2-6% of film-forming aids, 10-25% of water, and 0.5-3% of additives. The present invention adopts the water-based acrylic emulsion modified by cationic monomer as the main film-forming substance, supplemented by water-based self-crosslinking acrylic emulsion for blending modification, and then mixes with titanium dioxide, anti-bleeding additives and other conventional additives , prepared by dispersing and stirring, the prepared water-based wood sealing primer has the advantages of good storage stability, good sanding performance, excellent anti-bleeding color, and convenient construction.

Description

technical field [0001] The invention relates to the field of water-based wood coatings, in particular to a water-based wood sealing primer suitable for coating various wood substrates and a preparation method thereof. Background technique [0002] Due to the wide variety of wood substrates covered in wood coating, the main commonly used wood includes beech, oak, ash, pine, birch, maple, cherry wood, black walnut and other natural sawn timber, as well as density board, plywood and Wood-based panels such as particle board, etc. As wood itself, its chemical composition is extremely complex. The average content of the basic elements of dry wood is: carbon 50%, hydrogen 6.4%, oxygen 42.6%, nitrogen 1%. The main components include cellulose, hemicellulose, lignin and woody extracts (tannic acid, oil, essence, pigment, alkaloid, etc.). Due to the presence of wood extracts, the cell cavity of wood usually contains resins, gums, tannins, pigments, volatile oils, water and other sub...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/00C09D7/62C09D7/63C09D7/65C09D5/00
CPCC08K2003/2241C08L2205/025C08L2205/035C09D5/002C09D133/00C09D7/62C09D7/63C09D7/65C08L33/00C08L83/06C08K13/06C08K9/02C08K3/22C08K5/098
Inventor 彭刚阳段晓俊朱延安
Owner CARPOLY CHEM GRP