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Water-based adhesion agent and preparation thereof

An adhesive and water-based technology, which is applied in the field of water-based adhesives and its preparation, can solve the problems of liver and kidney damage, carcinogenicity, and human body damage, and achieve the effects of reducing toxicity, increasing bonding strength, and increasing curing speed

Active Publication Date: 2011-08-24
JIANGSU HEISONGLIN ADHESIVE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, dibutyl phthalate is commonly used as the main plasticizer in the market at present, but it is not known that dibutyl phthalate is harmful to the human body. Animal experiments have shown that it is harmful to the liver and kidneys, and can even cause cancer

Method used

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  • Water-based adhesion agent and preparation thereof
  • Water-based adhesion agent and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Weigh the raw materials according to the ratio in Table 1.

[0037] (2) Mix vinyl acetate and acrylic acid evenly to make a mixed monomer.

[0038] (3) Disperse nano-silica in deionized water at a speed of 1500 rpm to form a nano-silica solution.

[0039] (4) Add nano-silica solution, polyvinyl alcohol, and defoamer into the reaction kettle, heat up to 85°C and keep the gas off for 3 hours, and cool down to 40°C after completely dissolving.

[0040] (5) Add 5% of the total amount of emulsifier and TXIB into the reaction kettle, and stir well.

[0041] (6) Continue to add 10% of the mixed monomer in the reactor, raise the temperature to 65°C, add 30% of the total amount of ammonium persulfate, initiate polymerization, generate seed emulsion, heat up to 75°C, and then add the mixed monomer dropwise and the balance of ammonium persulfate.

[0042] (7) After the dropwise addition, heat up to 90°C, heat-preserve and mature for 1 hour, add the remainder of TXIB dropwis...

Embodiment 2

[0044] (1) Weigh the raw materials according to the ratio in Table 1.

[0045] (2) Mix vinyl acetate and acrylic acid evenly to make a mixed monomer.

[0046] (3) Disperse nano-silica in deionized water at a speed of 1500 rpm to form a nano-silica solution.

[0047] (4) Add nano-silica solution, polyvinyl alcohol, and antifoaming agent into the reaction kettle, heat up to 95°C and keep the air off for 1 hour, and cool down to 50°C after completely dissolving.

[0048] (5) Add 20% of the total amount of emulsifier and TXIB into the reaction kettle, and fully stir evenly.

[0049] (6) Continue to add 20% of the mixed monomer in the reactor, raise the temperature to 75°C, add 35% of the total amount of ammonium persulfate, initiate polymerization, generate seed emulsion, heat up to 85°C, and then add the mixed monomer dropwise and the balance of ammonium persulfate.

[0050] (7) After the dropwise addition, heat up to 90°C, heat-preserve and mature for 1 hour, add the remainder ...

Embodiment 3

[0052] (1) Weigh the raw materials according to the ratio in Table 1.

[0053] (2) Mix vinyl acetate and acrylic acid evenly to make a mixed monomer.

[0054] (3) Disperse nano-silica in deionized water at a speed of 1500 rpm to form a nano-silica solution.

[0055] (4) Add nano-silica solution, polyvinyl alcohol, and antifoaming agent into the reaction kettle, heat up to 90°C and keep the gas off for 2 hours, and cool down to 45°C after completely dissolving.

[0056] (5) Add 10% of the total amount of emulsifier and TXIB into the reaction kettle, and fully stir evenly.

[0057] (6) Continue to add 15% of the mixed monomer in the reactor, heat up to 70°C, add 33% of the total amount of ammonium persulfate, initiate polymerization, generate seed emulsion, heat up to 80°C, and then add the mixed monomer dropwise and the balance of ammonium persulfate.

[0058] (7) After the dropwise addition, heat up to 90°C, heat-preserve and mature for 1 hour, add the remainder of TXIB dro...

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Abstract

The invention relates to a waterborne adhesive and the preparation method thereof. The waterborne adhesive is prepared from deionized water, nano-SiO2, polyvinyl alcohol PVA17-99, polyvinyl alcohol PVA17-88, emulsifying agent, vinyl acetate, acrylic acid, ammonium persulfate, TXIB, preservative, and defoaming agent at a certain weight ratio. The preparation method comprises the following steps: adding nano-SiO2 into the waterborne adhesive, and adding TXIB dropwise through a flowmeter before and after polymerization of the waterborne adhesive, thus improving the brittleness, the water resistance and the glossiness of the waterborne adhesive, reducing the bottom film-forming temperature, remarkably improving the bonding strength of the adhesive, reducing the toxicity of the waterborne adhesive and lowering the production cost. The product can be widely used for self-adhesion and crossed adhesion of various kinds of non-metal materials such as paper sheets, wood material, fiber board and textiles, and has the advantages of environment-friendliness, economic and practical use, board range of application, etc.

Description

technical field [0001] The invention belongs to the field of adhesives, and in particular relates to a water-based adhesive and a preparation method thereof. Background technique [0002] Water-based adhesive is a water-based adhesive that uses water as the dispersion medium and is polymerized by adding monomers. It is mainly used for bonding non-metallic materials, especially for wood processing and interior decoration, and has very high requirements for environmental protection. , must comply with GB18583 "Limits of Hazardous Substances in Adhesives for Interior Decoration Materials". At present, Chinese patent application 200710030506.7 discloses a new type of copolymerized white latex, and its ingredients include: polyvinyl alcohol, deionized water, sodium bicarbonate, vinyl acetate, butyl acrylate, vinyl tertiary carbonate, dispersant, defoamer, Ammonium persulfate, plasticizer, pH regulator, polymerization reaction is carried out in a glass-lined reactor, first put po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J4/00C09J9/00
Inventor 刘鹏凯殷萍王向阳丁永柏
Owner JIANGSU HEISONGLIN ADHESIVE FACTORY
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