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A kind of quick-drying white glue and preparation method thereof

A technology of dry white and organosiloxane, applied in the direction of adhesives, grafted polymer adhesives, adhesive types, etc., can solve problems such as unsatisfactory cold resistance, and achieve high environmental protection, low odor, dry fast effect

Active Publication Date: 2016-06-08
NINGBO PASCO UNITED IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of white glue does not contain harmful substances, will not pollute the working environment, will not endanger human health, and has good pressure resistance, and will not crack under 300 atmospheres, but the cold resistance is still not ideal. Compared with high-quality products with strong performance and professionalism, there is still a big gap

Method used

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  • A kind of quick-drying white glue and preparation method thereof
  • A kind of quick-drying white glue and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The basic composition of its formula of quick-drying anti-low temperature white glue of the present embodiment is:

[0038] a. Starch derivatives with a solid content of 30~45wt%, organosiloxane, and long-chain acrylate modified copolymerized PVAc: 25; the modified PVA is made of hydroxypropyl phosphate distarch CAS#:53124-00- 8 and hexamethyldisiloxane CAS: 107-46-0 and hexadecyl acrylate (HA) and acrylic acid (AA) 2:1 molar ratio polymer modified PVAc;

[0039] b. Ethylene-vinyl acetate emulsion (EVA) with a solid content of 40~60wt%: 7;

[0040] c. Polyvinyl alcohol (CCPBP24, Changchun, Taiwan) aqueous solution (PVA) with a weight concentration of 8-12%: 10;

[0041] d. Calcium carbonate: 3;

[0042] e. Kaolin: 8;

[0043] Using mass ratio;

[0044] The preparation method of the above-mentioned quick-drying and anti-low temperature white glue comprises the following steps in turn:

[0045] 1, adding weight concentration in the reactor is about 10 parts of polyvi...

Embodiment 2

[0052] The basic composition of its formula of quick-drying anti-low temperature white glue of the present embodiment is:

[0053]a. Modified copolymerized PVAc with a solid content of 30~45wt%: 17;.

[0054] b. Ethylene-vinyl acetate emulsion (EVA) with a solid content of 40~60wt%: 3;

[0055] c. Polyvinyl alcohol (Kuraray PVA217, Japan) aqueous solution (PVA) with a weight concentration of 8-12%: 5;

[0056] d. Calcium carbonate: 8;

[0057] e. Kaolin: 3

[0058] The above-mentioned production method comprises the following steps in turn:

[0059] I. Add about 5 parts of polyvinyl alcohol (Japan Kuraray PVA217) aqueous solution (PVA) with a weight concentration of 8-12% in the reactor,

[0060] II. Then add 8 parts of vinyl acetate in specified quantity, then add 1.5 parts of starch derivative (hydroxypropyl starch phosphate) to dissolve, stir for 30 minutes, then add 3 parts of organosiloxane (hexamethyl starch phosphate) while stirring base disiloxane CAS#:107-46-0) a...

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Abstract

The invention relates to quick-drying white glue. The quick-drying white glue is characterized by comprising the following components in parts by weight: 15 to 25 parts of modified copolymerization PVAc, 3 to 10 parts of ethylene-vinyl acetate emulsion, 5 to 10 parts of polyvinyl alcohol aqueous solution and 6 to 16 parts of bond enhancer, wherein the solid content of the modified polymerization PVAc is 30 to 45 percent and formed by polymerizing organic siloxane, acrylate long-chain ester, starch derivative and vinyl acetate, wherein the mass ratio of the organic siloxane, acrylate long-chain ester, starch derivative and vinyl acetate is (3-5): (4.5-7.5): (1.5-2.5): (8-12). When in preparation, the polyvinyl alcohol aqueous solution is used as a colloid protective agent, the modified polymerization PVAc is firstly synthesized, and then the EVA is added to be reacted to obtain the need self-cross-linked white glue. The preparation process is simple and easy to operate, and the prepared white glue has the characteristics of rapidness in drying, strong impact resistance, water resistance, and strong freeze resistance; moreover, the prepared white glue is small in smell, toxic-free, harmless and high in environmental friendliness, different performances can reach the advanced level of the similar substance in abroad, and the cost is only half to one third.

Description

technical field [0001] The invention relates to an adhesive and a preparation method thereof, in particular to a quick-drying white glue with good low-temperature resistance and a preparation method thereof. Background technique [0002] As a water-based adhesive, polyvinyl acetate (PVAc) emulsion has the advantages of good adhesion and low price, and is widely used in construction, textile, printing, packaging and other fields. Because the color of the adhesive based on PVAc is mostly white, it is called white glue. In 2010, my country's demand for PVAc emulsion reached more than 300,000 tons, forming an industrial scale of 3.5-4 billion. However, white glue has disadvantages such as poor frost resistance, long drying and curing time, and weak impact resistance after film formation, which cannot well meet the use requirements of northern my country and some northern Europe, North America and other alpine regions. [0003] Most of the white glue produced in my country is g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J151/02C09J123/08C09J11/04C09J11/08
Inventor 钱小华
Owner NINGBO PASCO UNITED IND