Glue for plywood with high weather resistance and processing technology of glue

A high weather resistance, plywood technology, applied in the direction of polymer adhesive additives, non-polymer adhesive additives, adhesive additives, etc., can solve problems such as poor water resistance, insufficient bonding strength, and poor temperature resistance , to achieve zero formaldehyde content, controllable cost, and avoid formaldehyde hazards

Inactive Publication Date: 2020-09-08
师宗腾信木业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing formaldehyde-free adhesive is composed of inorganic starch, curing agent and catalyst. Although the inorganic inorganic adhesive does not release formaldehyde, it is used in the production process of plywood, which has poor temperature resistance, poor water resistance, The problem of insufficient bonding strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The glue for high weather resistance plywood described in Example 1 includes the following component raw materials in mass percentage: 20% weather resistance material, 10% mixed powder, 25% lignin mixed solution, 0.5% protease, initiator 2 %, cellulose 1% and water 41.5%.

[0022] Wherein, the preparation method of the weather-resistant material is as follows: firstly, firstly, soak the fish scallops in the acetic acid solution, the mass ratio of the fish scallops to the acetic acid is 1:2, after soaking for 10 hours, mash the fish scallops to obtain the fish scallops Slurry, acetic acid solution and swim bladder are blended and crushed to dissolve part of the colloid and protein, and then at a temperature of 30°C, chitosan, plasticizer and polyethylene wax are added to the fish maw slurry. The mass ratio of slurry, chitosan, plasticizer and polyethylene wax is 20:1:0.5:2. After stirring and mixing, vacuum distillation is carried out to obtain concentrated material, and...

Embodiment 2

[0032] The glue for high weather resistance plywood described in this embodiment 2 includes the following component raw materials in mass percentage: weather resistance material 25%, mixed powder 15%, lignin mixed solution 23.5%, protease 0.8%, initiator 3.7% %, cellulose 2% and water 30%.

[0033] Wherein, the preparation method of the weather-resistant material is as follows: firstly, firstly, soak the fish scallops in the acetic acid solution, the mass ratio of the fish scallops to the acetic acid is 1:2.5, after soaking for 15 hours, mash the fish scallops to obtain the fish scallops material Slurry, acetic acid solution and swim bladder are blended and crushed to dissolve part of the colloid and protein, and then at a temperature of 40°C, chitosan, plasticizer and polyethylene wax are added to the fish maw slurry, and the fish maw The mass ratio of slurry, chitosan, plasticizer and polyethylene wax is 20:1.5:0.8:2.2. After stirring and mixing, carry out vacuum distillatio...

Embodiment 3

[0043] The glue for high weather resistance plywood described in this embodiment 3 includes the following component raw materials in mass percentage: 30% of weather resistance material, 10% of mixed powder, 15% of lignin mixed solution, 1% of protease, and 5% of initiator %, cellulose 3% and water 36%.

[0044] Wherein, the preparation method of the weather-resistant material is as follows: firstly, first add the fish scallops to the acetic acid solution for soaking, the mass ratio of the fish scallops to the acetic acid is 1: 3, after soaking for 20 hours, mash the fish scallops to obtain the fish scallops material Slurry, acetic acid solution and fish maw are blended and mashed to dissolve part of the colloid and protein, and then at a temperature of 45°C, chitosan, plasticizer and polyethylene wax are added to the fish maw slurry. The mass ratio of slurry, chitosan, plasticizer and polyethylene wax is 20: 2: 1:2.5, after stirring and mixing, carry out vacuum distillation to...

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PUM

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Abstract

The invention discloses glue for plywood with high weather resistance. The glue is prepared from, by mass, 20%-30% of weather-resistant materials, 10%-20% of mixed powder, 15%-25% of lignin mixed liquor, 0.5%-1% of protease, 2%-5% of an initiator, 1%-3% of cellulose and 30%-50% of water. The processing technology of the glue comprises the following steps: (1) adding water and the mixed powder intoa reaction kettle according to a ratio, stirring, adding the lignin mixed solution and cellulose according to a ratio, and stirring while keeping the temperature to obtain a mixed solution A, and (2)after cooling, adding a weather-proof material and protease into the mixed solution A according to a ratio, uniformly stirring, adding the initiator according to a ratio, and stirring to obtain a glue finished product. The preparation process is simple, the adopted raw materials are easy to obtain, the production cost is controllable, all the raw material components are reasonably matched, and the glue prepared through the method has the advantages of being free of formaldehyde content, high in bonding strength, good in water resistance, easy to apply and not prone to mildewing.

Description

technical field [0001] The invention belongs to the technical field of wood processing, and in particular relates to a glue for plywood with high weather resistance and a processing technology thereof. Background technique [0002] Plywood is a three-layer or multi-layer board-like material formed by peeling wood sections into veneers or sliced ​​into thin wood, and then glued with adhesives. Plywood is an important type of wood-based panels. Due to the characteristics of small deformation, large format, convenient construction, not easy to warp, and high tensile strength of transverse grains, plywood is widely used in furniture, carriages, shipbuilding, military industry, packaging and other industrial sectors. Get widely used. At present, "trialdehyde glue" represented by urea-formaldehyde resin, phenolic resin, and melamine-formaldehyde resin is the most widely used adhesive used in the production process of plywood. These three types of adhesives all use formaldehyde as...

Claims

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Application Information

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IPC IPC(8): C09J189/00C09J197/00C09J103/02C09J199/00C09J11/04C09J11/06C09J11/08
CPCC08K2201/011C08L2201/08C08L2205/025C08L2205/035C09J11/04C09J11/06C09J11/08C09J189/00C09J197/005C08L97/005C08L89/00C08L3/02C08L99/00C08L5/08C08L23/06C08L43/04C08L5/02C08L33/26C08K13/02C08K3/346C08K5/19C08K3/36
Inventor 刘步华符太东朱龙堂
Owner 师宗腾信木业有限责任公司
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