Quick-drying high-strength carpenter's glue and preparation method thereof

A wood glue, high-strength technology, applied in the direction of polymer adhesive additives, non-polymer adhesive additives, monocarboxylate copolymer adhesives, etc., can solve problems such as complex production processes, and achieve adhesion High strength, good water resistance, good creep resistance

Inactive Publication Date: 2017-12-19
NINGBO PASCO UNITED IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These polyvinyl acetate emulsion modified products are synthesized and modified by adding other small molecular monomers in the monomer polymerization stage, which requires relatively high production equipment and sites, and the production process is relatively complicated.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0061] A preparation method of quick-drying high-strength wood glue, comprising the following steps:

[0062] Step 1, prepare raw materials;

[0063] Step 2. Add deionized water and antifreeze to the reaction kettle, stir slowly and add polyvinyl alcohol powder, thickener, and plasticizer, and wait for 20-30 minutes to fully infiltrate the polyvinyl alcohol powder;

[0064] Step 3. Next, pass steam while stirring to raise the temperature of the mixture to 60°C to swell the PVA. After adding half of the defoamer, raise the temperature to 95°C, keep the temperature constant for 30-60 minutes, and stir until the solution is uniform;

[0065] Step 4, cool down while stirring, and cool down to 55 o C. Add the remaining half of the defoamer, slowly add polyvinyl acetate emulsion, stir for 10-30 minutes, add water-based polyurethane, stir for another 10-30 minutes, add silicone modifier and filler, and stir for 10-30 minutes;

[0066] Step 5. Add surfactant, cool down to below 50 d...

Embodiment 1

[0070] Step 1, prepare raw materials according to the following weight percentages:

[0071] Deionized water: 18.9%, polyvinyl acetate emulsion: 60%, polyvinyl alcohol (PVA): 4%, silane coupling agent: 0.5%, dipropylene glycol dibenzoate: 1.0%, xanthan gum: 0.8 %, glycerin: 3.0%, BIT: 0.20%, defoamer: 0.3%, surfactant: 0.3%, coalescent: 1%, waterborne polyurethane: 8%, silica 2%;

[0072]Step 2, add deionized water and glycerin (antifreeze) in the reactor, slowly stir and add polyvinyl alcohol powder, xanthan gum (thickener), dipropylene glycol dibenzoate (plasticizer), Wait for 20 minutes to fully infiltrate the polyvinyl alcohol powder;

[0073] Step 3. Next, pass steam while stirring to raise the temperature of the mixed solution to 60°C to swell the PVA. After adding half of the defoamer, raise the temperature to 95°C, keep the temperature constant for 30 minutes, and stir until the solution is uniform;

[0074] Step 4, cool down while stirring, and cool down to 55 o C,...

Embodiment 2

[0078] Step 1, prepare raw materials according to the following weight percentages:

[0079] Deionized water: 16.9%, polyvinyl acetate emulsion: 60%, polyvinyl alcohol (PVA): 4%, silane coupling agent: 0.5%, dipropylene glycol dibenzoate: 1.0%, xanthan gum: 0.8 %, glycerin: 3.0%, BIT: 0.20%, defoamer: 0.3%, surfactant: 0.3%, coalescent: 1%, waterborne polyurethane: 10%, kaolin 2%;

[0080] Step 2, add deionized water and glycerin (antifreeze) in the reactor, slowly stir and add polyvinyl alcohol powder, xanthan gum (thickener), dipropylene glycol dibenzoate (plasticizer), Wait for 30 minutes to fully infiltrate the polyvinyl alcohol powder;

[0081] Step 3. Next, pass steam while stirring to raise the temperature of the mixed solution to 60°C to swell the PVA. After adding half of the defoamer, raise the temperature to 95°C, keep the temperature constant for 30 minutes, and stir until the solution is uniform;

[0082] Step 4, cool down while stirring, and cool down to 55 o ...

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Abstract

The invention provides quick-drying high-strength carpenter's glue which is prepared from 10.0 to 50.0% of deionized water, 20.0 to 70.0% of polyvinyl acetate emulsion, 3.0 to 10.0% of polyvinyl alcohol, 0.1 to 5.0% of organic silicon modifier, 0.5 to 5.0% of plasticizer, 0.1 to 2.0% of thickener, 1.0 to 6.0% of antifreezing agent, 0.20 to 1.0% of preservative, 0.10 to 0.5% of defoamer, 0.1 to 1.0% of surface active agent, 0.1 to 2.0% of coalescing agent, 0 to 20.0% of waterborne polyurethane and 0 to 5.0% of filler. A preparation method comprises the steps of adding deionized water, polyvinyl alcohol powder, thickener and plasticizer into a reaction kettle, introducing steam to warm, then adding a half of the defoamer, cooling to 55 DEG C, adding the rest half of the defoamer, then adding the polyvinyl acetate emulsion, adding the waterborne polyurethane, the organic silicon modifier and the filler, evenly stirring, then adding the surface active agent, the coalescing agent and the preservative, standing to defoam and filling to obtain the carpenter's glue. The quick-drying high-strength carpenter's glue has the advantages of quick drying speed, good cold and water resistance, high adhesive strength and good creep resistance.

Description

technical field [0001] The invention relates to the technical field of adhesive preparation, and specifically refers to a quick-drying high-strength wood glue and a preparation method thereof. Background technique [0002] As a water-based adhesive, polyvinyl acetate (PVAc) emulsion is widely used in wood, decorative panels, paper processing, wireless doors, leather goods, bonding of wood and cement products, and printing and dyeing fixatives. It is easy to use, Non-toxic, odorless, no corrosion blocks, etc., the adhesive made on this basis has a very wide range of applications at home and abroad, such as the bonding of furniture wood, handicraft production, etc. Due to the long curing time of polyvinyl acetate emulsion glue, poor water resistance, cold resistance, creep resistance, etc., the general-purpose white latex on the market generally adopts the method of polyvinyl formalization to improve its resistance. Cold resistance and water resistance, this will contain a la...

Claims

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Application Information

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IPC IPC(8): C09J131/04C09J11/08C09J11/06C09J11/04
CPCC09J131/04C08L2205/035C09J11/04C09J11/06C09J11/08C08L29/04C08L75/04C08K13/02C08K5/053C08K3/36C08K5/54
Inventor 钱小华
Owner NINGBO PASCO UNITED IND
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