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Water-based wood toothing glue and preparation method thereof

A wood and water-based technology, applied in the field of wood adhesives, can solve the problems of poor durability, low bonding strength and high price, and achieve the effects of good durability, fast drying speed and low cost

Inactive Publication Date: 2018-03-13
JIANGMEN DINGSHI ADHESIVE INDAL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing natural adhesives, such as soybean protein adhesives, starch adhesives, etc., all have the problems of low bonding strength and poor water resistance, while other types of formaldehyde-free wood adhesives are expensive and have poor durability , prone to problems such as degumming and cracking in high temperature or cold weather

Method used

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  • Water-based wood toothing glue and preparation method thereof
  • Water-based wood toothing glue and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032]

[0033]

[0034] The above raw materials are all commercially available, wherein the plasticizer is polyamide resin, the defoamer is mineral oil, and the preservative is isothiazolinones.

[0035] Weigh the raw materials according to the above weight ratio, add deionized water into the reactor, slowly add defoamer and PVA at a stirring rate of 100r / min, keep the stirring rate constant, raise the temperature to 80°C, and stir at a constant temperature and speed for 2h , then lower the temperature to 60°C, add polyvinyl acetate emulsion, styrene-acrylic emulsion, and acrylic emulsion, stir for 30 minutes at a stirring speed of 500r / min, then add titanium dioxide and talcum powder, and then add plasticizers and preservatives. Stir for 2h at a stirring rate of 1000r / min, take a sample for detection, filter, and discharge for packaging.

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Abstract

The invention discloses a water-based wood toothing glue, which is prepared from the following raw materials in percentage by weight: 20 to 30 percent of polyvinyl acetate emulsion, 20 to 30 percent of styrene-acrylic emulsion, 20 to 30 percent of acrylic emulsion, 3 to 5 percent of PVA, 1 to 2 percent of plasticizer, 10 to 20 percent of filler, 10 to 20 percent of deionized water, 0.2 to 0.5 percent of defoaming agent, and 0.2 to 0.5 percent of preservative. The invention also discloses a preparation method of the water-based wood toothing glue. The water-based wood toothing glue provided bythe invention is low in cost, good in stability, fast in drying speed, high in gluing strength, and good in water fastness and durability, and cannot degum or craze under high-temperature or extremelycold weathers.

Description

technical field [0001] The invention relates to a wood adhesive, in particular to a water-based wood tooth glue and a preparation method thereof. Background technique [0002] With the changes in the wood raw material market, the supply of wood materials in my country has shifted from traditional solid wood to glued wood materials. Traditional wood adhesives are dominated by cheap aldehyde adhesives such as urea-formaldehyde resins, phenolic resins, and melamine-formaldehyde resins, which have very strict requirements on the moisture content of wood, and will produce toxic formaldehyde when used, which is harmful to human health and the natural environment. cause harm. With the improvement of people's awareness of indoor environmental safety and environmental protection, industrial formaldehyde-free wood adhesives have received more and more attention. [0003] Existing natural adhesives, such as soybean protein adhesives, starch adhesives, etc., all have the problems of l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J131/04C09J125/14C09J133/00C09J129/04C09J177/00C09J11/04C09J11/06C09J11/08
CPCC09J131/04C08K2003/2241C08L2205/035C09J11/04C09J11/06C09J11/08C08L25/14C08L33/00C08L29/04C08L77/00C08K3/22C08K3/34C08K5/47
Inventor 丁佩琴
Owner JIANGMEN DINGSHI ADHESIVE INDAL
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