High-strength antifreezing single-component plate-splicing adhesive and preparation method thereof

A one-component, jigsaw adhesive technology, applied in the direction of adhesives, polymer adhesive additives, non-polymer adhesive additives, etc. The effect of strong damp heat, good product stability and high bonding strength

Active Publication Date: 2014-12-10
HUNAN MAGPOW ADHESIVE INDS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to solve the problem that polyvinyl acetal is used as protective colloid and free formaldehyde is not environmentally friendly, and the problem of weak heat and humidity resistance of using polyvinyl alcohol solution as protective colloid and then modifying it with vinyl polymer is not strong. Provide a polyvinyl acetate composite adhesive with stable viscosity, good fluidity, high bonding strength, no free formaldehyde and good heat and humidity resistance. The product is widely used in veneer thickening, hollow door production, glulam, wheels It is an environmentally friendly adhesive with good heat and humidity resistance, stable viscosity and high bonding strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: Water 200kg, EVA emulsion Celanese cp149 50Kg, sodium acrylamido sulfonate 1 kg, 1% sodium bicarbonate 50 Kg, 1%Kps 40 Kg, VAc 90 Kg, GMA 22 Kg, 2-EHA 6 Kg, appropriate amount of pH regulator, 0.5kg of residual single treatment agent, 20kg of auxiliary agent, 10kg of hpmc;

[0036] The production process is as follows: first add water and EVA emulsion into the reaction kettle, raise the temperature to 85°C, add reactive emulsifier and pH buffer, stir for 20 minutes until uniform and free of bubbles, then add initiator and monomers VAc, GMA and 2-EHA, react for 5 hours, then heat up to 90°C for 1.5 hours, then cool down to 63°C, add pH regulator to adjust pH to 6, add additives, residue treatment agent, viscosity regulator and stir for 60 Minutes until uniform, then after cooling down to 25°C, filter and pack the finished product.

Embodiment 2

[0037] Example 2: Water 250kg, EVA emulsion Celanese cp149 35Kg, sodium acrylamido sulfonate 1.5 kg, 1% sodium bicarbonate 80 Kg, 1%Kps 70 Kg, VAc 120 Kg, GMA 26 Kg, 2-EHA 13 Kg, appropriate amount of pH regulator, 1.0kg of residual single treatment agent, 15kg of auxiliary agent, and 6kg of hpmc. The production process can be made according to the method described in Example 1.

Embodiment 3

[0038] Example 3: Water 270kg, EVA emulsion Celanese cp149 58Kg, sodium acrylamidosulfonate 2.0 kg, 1% sodium bicarbonate 95 Kg, 1%Kps 90 Kg, VAc 140 Kg, GMA 29 Kg, 2-EHA 10 Kg, appropriate amount of pH regulator, residual single treatment agent 2.1kg, auxiliary agent 30kg, hpmc 20kg. The production process can be made according to the method described in Example 1.

[0039] The performance test indicators of the high-strength antifreeze one-component panel glue prepared in Examples 1-3 refer to relevant standards (test environment: temperature: 25°C, humidity: 70%) as shown in Table 1:

[0040] Table 1:

[0041] index Example 1 Example 2 Example 3 Exterior white viscous liquid white viscous liquid white viscous liquid Solid content 44.3% 35.1% 29.30% viscosity 12000mpa.s 9000mpa.s 13000mpa.s Tensile shear strength 15Mpa 12Mpa 16Mpa Tensile Shear Wet Strength 6 MPa 5.8 MPa 5.1 MPa 80 ℃ boiled adhesive par...

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PUM

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Abstract

The invention relates to a high-strength antifreezing single-component plate-splicing adhesive and a preparation method thereof. The high-strength antifreezing single-component plate-splicing adhesive is composed of water, an ethylene-vinyl acetate (EVA) emulsion, a reactive emulsifier, a pH buffering agent, an initiator potassium persulfate (KPS), vinyl acetate (VAc), glycidyl methacrylate (GMA), 2-ethylhexyl acrylate (2-EHA), a pH regulator, a residual monomer treating agent, assistants and a viscosity regulator. The polyvinyl acetate composite adhesive has the advantages of stable viscosity, favorable flowability, high bonding strength, no free formaldehyde and favorable damp-heat resistance. The product is widely suitable for veneer thickening, hollow-core door manufacturing, integrated materials, wheel-type plate splicing and rabbets, and is an environment-friendly adhesive with favorable damp-heat resistance, stable viscosity and high bonding strength.

Description

technical field [0001] The invention belongs to the technical field of adhesive manufacture, and in particular relates to a high-strength antifreeze one-component glue and a preparation method thereof. Background technique [0002] According to the characteristics of wood material, the characteristics of large deformation due to absorption and loss of water. A glue that can penetrate into wood well, has excellent film formation and strong cohesion, especially can form a good chemical bond with the characteristic reactive groups of wood fibers, and solve the problem of easy cracking of wood panels. ; [0003] In China, Deng Chongyang and Ma Peihua "Research and Development of One-Component Laminate Emulsion" reported that polyvinyl alcohol (PVA) acetal solution was added to a solution of TMP-TDI adduct blocked by aniline to make a one-component glue. Board glue; Zheng Weizhou and Zhang Cheng used polyvinyl alcohol as a protective colloid, and then used vinyl monomers to ...

Claims

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Application Information

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IPC IPC(8): C09J4/00C09D4/06C09J123/08C09J11/06C09J11/08C08F218/08C08F220/32C08F220/18
Inventor 袁媛蒋沅峰
Owner HUNAN MAGPOW ADHESIVE INDS
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