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Epoxy sealing agent for timber product and preparation method and application thereof

A technology of epoxy woodware and sealant, which is applied in the direction of epoxy resin coatings and coatings, can solve the problems of low hardness, paint film collapse, and affect the appearance, and achieve good storage stability, low VOC emissions, and excellent mechanical properties Effect

Active Publication Date: 2018-03-30
深圳澳达新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, furniture materials are mainly made of solid wood, and some problems have arisen in the application of water-based wood lacquers on solid wood. For example, the sealing effect of some water-based wood lacquers is not ideal, and cannot seal grease and tannin; The solid wood is prone to tendon swelling; some solid wood materials are soft, and the hardness of water-based wood paint is generally higher than that of oil-based paint. After bumping, the paint film and wood are prone to collapse at the same time, which affects the appearance

Method used

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  • Epoxy sealing agent for timber product and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Preparation of component A: Weigh 100kg in total according to the mass percentage: 52kg of water-based epoxy emulsion, 18kg of epoxy-acrylic emulsion, 0.2kg of pH regulator, 0.3kg of defoamer, 2kg of filler, 1.2kg of thickener, flow Leveling agent 0.3kg, wetting agent 0.4kg, water 25.5kg.

[0046] After weighing the raw materials according to the above mass components, proceed according to the following steps:

[0047] A. Add water-based epoxy emulsion, epoxy-acrylic emulsion, pH adjuster, thickener, defoamer to the dispersing tank in sequence, stir and disperse at high speed for 10 minutes until the viscosity of the emulsion increases significantly;

[0048] B. In step A, add fillers in turn, stir and disperse for 10-15 minutes, until the fineness is ≤50 μm;

[0049] C. Add leveling agent, wetting agent, and water in step B to make the viscosity of the sealing agent to 155s-180s, stir at a medium speed for 5 minutes until uniform, then filter and pack.

[0050] Prepa...

Embodiment 2

[0055] Preparation of component A: Weigh 100kg in total according to mass percentage: 56kg of water-based epoxy emulsion, 19kg of epoxy-acrylic emulsion, 0.2kg of pH regulator, 0.2kg of defoamer, 4kg of filler, 0.8kg of thickener, flow Leveling agent 0.3kg, wetting agent 0.5kg, water 19kg.

[0056] After weighing the raw materials according to the above mass components, proceed according to the following steps:

[0057] A. Add water-based epoxy emulsion, epoxy-acrylic emulsion, pH adjuster, thickener, defoamer to the dispersing tank in sequence, stir and disperse at high speed for 10 minutes until the viscosity of the emulsion increases significantly;

[0058] B. In step A, add fillers in turn, stir and disperse for 10-15 minutes, until the fineness is ≤50 μm;

[0059] C. Add leveling agent, wetting agent, and water in step B to make the viscosity of the sealing agent to 155s-180s, stir at a medium speed for 5 minutes until uniform, then filter and pack.

[0060]Preparation ...

Embodiment 3

[0065] Preparation of component A: Weigh 100kg in total according to the mass percentage: 49kg of water-based epoxy emulsion, 16kg of epoxy-acrylic emulsion, 0.2kg of pH regulator, 0.2kg of defoamer, 3kg of filler, 1.5kg of thickener, flow Leveling agent 0.3kg, wetting agent 0.5kg, water 29.3kg.

[0066] After weighing the raw materials according to the above mass components, proceed according to the following steps:

[0067] A. Add water-based epoxy emulsion, epoxy-acrylic emulsion, pH adjuster, thickener, defoamer to the dispersing tank in sequence, stir and disperse at high speed for 10 minutes until the viscosity of the emulsion increases significantly;

[0068] B. In step A, add fillers in turn, stir and disperse for 10-15 minutes, until the fineness is ≤50 μm;

[0069] C. Add leveling agent, wetting agent, and water in step B to make the viscosity of the sealing agent to 155s-180s, stir at a medium speed for 5 minutes until uniform, then filter and pack.

[0070] Prepa...

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Abstract

The invention relates to the field of high polymer materials, in particular to an epoxy sealing agent for a timber product. The epoxy sealing agent for the timber product comprises a first component and a second component; the first component comprises, by mass percentage, 49-56% of non-ionic water-borne epoxy emulsion, 16-19% of epoxy-acrylic emulsion, 3.2-8.7% of first auxiliary and 16.3-31.8% of water, wherein the mass ratio of the non-ionic water-borne epoxy emulsion to the epoxy-acrylic emulsion is 3:0.8-1.2, and the sum of the mass percentages of the compositions of the first component is 100%; the second component comprises, by mass percentage, 14.8-24.6% of water, 75-85% of water-borne epoxy hardener and 0.2-0.4 % of second auxiliary, wherein the sum of the mass percentages of thecompositions of the second component is 100%. The sealing agent not only has a good sealing effect, but also has a better rib swelling resistance effect; meanwhile, compact paint film is formed, so that the hardness of timber is enhanced in disguised form, and construction attachment of subsequent water paint is not affected; no organic solvent exists, and VOC emission is low, so that the sealingagent is more environmentally friendly. The invention further discloses a preparation method and application of the sealing agent.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to an epoxy wood sealer and its preparation method and application. Background technique [0002] With the promotion of water-based wood paint, the concept of green environmental protection has become an important criterion for people to choose furniture and home decoration. In recent years, furniture materials are mainly made of solid wood, and some problems have arisen in the application of water-based wood lacquers on solid wood. For example, the sealing effect of some water-based wood lacquers is not ideal, and cannot seal grease and tannin; it is difficult to deal with multi-fiber, wood tendons The solid wood is prone to tendon swelling; some solid wood materials are soft, and the hardness of water-based wood paint is generally higher than that of oil-based paint. After bumping, the paint film and wood are prone to collapse at the same time, affecting the appearance. Contents...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D151/08C09D7/63C09D7/65C09D7/43C09D7/47
CPCC08L2205/035C09D163/00C08L51/08C08L83/12C08K9/04C08K3/346C08K5/098
Inventor 陈日云佘其渠
Owner 深圳澳达新材料有限公司
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