Environmentally-friendly filler of adhesive for sheet and application method of filler

An application method and adhesive technology, applied in the direction of adhesives, adhesive types, polymer adhesive additives, etc., can solve the problems that the interval time cannot be too long, the adhesive has poor water resistance, and the cost advantage is not obvious, so as to improve the mechanical properties , Conducive to sizing and improving the fluidity of glue

Inactive Publication Date: 2019-10-25
湘潭海泡石科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the filler prepared in this patent is mixed with the glue, the curing time of the glue is short, so the interval from sizing to cold pressing should not be too long, the process requirements are relatively strict, and the adhesive has the problems of poor water resistance and poor fluidity , the cost advantage is not obvious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) 18% sepiolite, 14% bentonite, 6% attapulgite, 36% calcite, 12% talcum powder, 8% flour, 4% starch, 4% cellulose, and 1% polyvinyl alcohol are mixed by weight percentage Add to a high-speed blender until well blended;

[0020] (2) Add the mixed filler to the urea-formaldehyde resin glue in a weight ratio of 30%, and add 0.5% tartaric acid to adjust the pH value of the glue to 6.

Embodiment 2

[0022] (1) Add 12% of sepiolite, 20% of bentonite, 29% of calcite, 19% of talc, 12% of flour, 6% of puffed corn flour, 1% of polyacrylamide and 3% of sodium silicate into the high-speed mixer by weight percentage medium until well mixed;

[0023] (2) Add the mixed filler to the urea-formaldehyde resin glue at a weight ratio of 25%, and add 1% oxalic acid to adjust the pH value of the glue to 6.

Embodiment 3

[0025] (1) Add 21% sepiolite, 13% bentonite, 10% attapulgite, 26% calcite, 21% talcum powder, 7% wood powder, 1% sodium polyacrylate, and 1% vegetable glue to the high-speed mixer by weight percentage until evenly mixed;

[0026] (2) Add the mixed filler to the urea-formaldehyde resin glue at a weight ratio of 20%, and add 0.7% ammonium dihydrogen phosphate and 0.4% ammonium persulfate to adjust the pH value of the glue to 6.

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PUM

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Abstract

The invention discloses an environmentally-friendly filler of an adhesive for a sheet. The filler is prepared by uniformly mixing the following raw materials, in percentages by weight: 26%-44% of claymineral powder, 42%-56% of an inorganic filler, 7%-24% of an organic filler, and 1%-5% of a thickening modifier, wherein the clay mineral powder is one or more selected from the group consisting of sepiolite, montmorillonite, attapulgite and kaolinite; the inorganic filler is one or more selected from the group consisting of calcite powder, talcum powder and quartz powder; the organic filler is one or more selected from the group consisting of puffed corn flour, flour, starch and wood flour; and the thickening modifier is one or more selected from the group consisting of cellulose, polyvinylalcohol, polyacrylamide, sodium polyacrylate, sodium silicate and vegetable gum. The invention also provides an application method of the filler. According to the environmentally-friendly filler of the adhesive for the sheet provided by the invention, the finally prepared adhesive has obviously-improved water resistance and bonding strength, and an inhibitory effect on formaldehyde release.

Description

technical field [0001] The invention relates to the technical field of board adhesive fillers and its application in urea-formaldehyde resin adhesives, in particular to an environmentally friendly filler for board adhesives, which belongs to the field of non-metallic ore deep processing, and the product is suitable for adhesives and wood products. Background technique [0002] At the end of 2017, my country had nearly 5,500 manufacturers of plywood products, producing 189.04 million cubic meters of plywood products, accounting for 64.1% of all wood-based panel production, with an output value of about 438 billion yuan. Among them, 156.93 million cubic meters of wood plywood, 5.72 million cubic meters of bamboo plywood, 9.3 million cubic meters of other plywood, and 17.09 million cubic meters of blockboard. In the past 10 years, the average annual growth rate of China's panel product output has reached 14.5%, which is the fastest growing panel type among wood-based panels. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J11/08C09J11/04C09J161/24
CPCC08K3/34C08K3/346C08K7/26C08K2003/265C08K2201/014C08L1/02C08L3/02C08L5/08C08L29/04C08L33/02C08L33/26C08L97/02C09J11/04C09J11/08C09J161/24
Inventor 喻浩然曾召刚杨婧源杨少敏
Owner 湘潭海泡石科技有限公司
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