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Lumber adhesive agent additives and preparation technique

A technology of wood adhesives and additives, applied in the direction of non-polymer adhesive additives, adhesive additives, etc., can solve the problems of low-formaldehyde resin adhesives, poor initial viscosity, poor pre-pressing performance, and single function of flour, and achieve the improvement of finished product indicators. Improvement of cold bonding fastness and obvious cost-effective advantages

Inactive Publication Date: 2008-06-18
淮安市鹰翔新材料制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the defects of single function of traditional additive flour and poor initial viscosity and pre-pressing performance of low-formaldehyde resin glue, and disclose an additive for wood adhesive and its preparation process

Method used

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Experimental program
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Effect test

Embodiment 1

[0029] The formula and weight percentage distribution ratio of the product of the present invention are: A material 53%, B material 45%, C material 0%, D material 2%.

[0030] Material A is made of fly ash and wood powder; material B is made of kudzu root and sweet potato; material D is made of resorcinol.

[0031] The compounding process of the present invention, to produce 1000kg finished product additive metering:

[0032] (1) Remove 300kg of fly ash and 230kg of sawdust in material A, remove impurities, dry until the moisture content is not more than 15%, crush and grind to 80-200 mesh for later use;

[0033] (2) Cut 250kg of kudzu root and 200kg of sweet potato in material B into small pieces or pieces with a turning machine, and after drying or drying until the moisture content is not greater than 15%, enter the mature "alpha" process in the commercial starch industry for production In special machinery such as equipment, heat up to about 140°C-190°C, pressurize to 1.5-...

Embodiment 2

[0038] The formula and weight percentage of the product of the present invention are: material A 55%, material B 42%, material C 1%, material D 2%.

[0039] Material A uses diatomite and nut shell powder; material B uses cassava; material C uses oxalic acid, and material D uses urea.

[0040] The compounding process of the present invention, to produce 1000kg finished product additive metering:

[0041] (1) Remove impurities from 400 kg of diatomite and 150 kg of nut shell powder in material A, dry them until the water content is no more than 15%, and then pulverize them twice to 150 mesh with a crusher and a mill for later use;

[0042] (2) Cut 420kg of cassava in material B into small pieces or pieces with a turning machine, and after drying or drying until the moisture content is not greater than 15%, enter the commercially available special machinery such as the mature "Alpha" process production equipment in the starch industry During heating, heat up to about 140°C-190°C...

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Abstract

The present invention provides an additive for wood adhesive and a preparation technology thereof and is characterized in that the prescription and the weight percentage of the additive are 35 percent to 80 percent of material A filler, 15 percent to 60 percent of material B bulk agent, 0 percent to 10 percent of material C acidity-alkalinity regulator and 0 percent to 5 percent of material D formaldehyde absorbent; the preparation technology is that each prepared material with the moisture content less than 15 percent is crushed to the corresponding fineness, the material B is modified firstly, and then each prepared material is stirred completely and uniformly inside a mixer according to the percentage. The additive of the present invention can improves the sticking performance of a manmade board obviously, is fit for continuous mechanical production, ensures that the release quantity of free formaldehyde of the board is reduced, improves the indexes of waterproofing, anti-aging, anti-mildewing, etc. and reduces the production cost.

Description

Technical field: [0001] The invention relates to an additive material that must be added when using adhesives in the wood industry, and in particular discloses an additive for wood adhesives and a preparation process for the additives, which are applied to the production process of various glued wood-based panels. Background technique: [0002] The timber industry plays an important role in the national economy of our country. "The annual consumption of wood reaches 250 million cubic meters, equivalent to the sum of the consumption of steel and plastic in my country" (Yu Wenji). The man-made plywood manufacturing industry is the main category in the wood industry. More than 95% of the adhesives used are thermosetting polymer adhesive resins. However, it is limited by the synthesis conditions and the storage requirements of the finished glue. The water content is about 50%, and generally cannot be used directly. At home and abroad, flour processed from grain crops—wheat is m...

Claims

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Application Information

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IPC IPC(8): C09J11/04C09J11/06
Inventor 胡飞施永章
Owner 淮安市鹰翔新材料制造有限公司
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