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A kind of preparation method of vinegar-acrylic emulsion adhesive

A kind of vinegar-acrylic emulsion and adhesive technology, which is applied in the direction of monocarboxylate copolymer adhesive, adhesive type, non-polymer adhesive additive, etc., can solve the problems of general bonding strength and limited use methods, and achieve Adhesive ability and water resistance are improved, and the effect of strengthening the adhesive ability

Active Publication Date: 2019-09-13
JIANGXI ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the emulsion adhesives produced are made of homopolymerized vinyl acetate monomer. However, such adhesives have a very high dipping and peeling rate, and basically the glue will be opened after soaking in cold water, resulting in limited use. , and this type of adhesive is tested according to the national standard GB / T 17657-2013 "Test methods for physical and chemical properties of wood-based panels and veneered wood-based panels". The dry shear strength of wood is 4.5-6.5MPa, Average bonding strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A preparation method of vinegar-acrylic emulsion adhesive, the method is specifically implemented as follows:

[0028] S1: Add 10g of a mixture of polyvinyl alcohol 1788 and polyvinyl alcohol 1799 in a mass ratio of 1:1, and 230g of water into a four-necked flask equipped with a condenser and a stirrer, and heat it in a water bath to slowly raise the temperature to 95°C;

[0029] S2: Lower the temperature to 55°C, then add 6g of OP-10 solution, 23g of vinyl acetate, 8g of butyl acrylate and 15g of NaHCO3 solution, and colostrum for 60 minutes;

[0030] S3: After primary emulsification, slowly raise the temperature to 75°C, then add 7g of initiator ammonium persulfate, and start to condense and reflux;

[0031] S4: When there is basically no condensing reflux in the condenser tube, after fully mixing 170g of vinyl acetate and 35g of butyl acrylate, add dropwise to the four-necked flask, and place it for 50 minutes after the dropwise addition is completed;

[0032] S5: A...

Embodiment 2

[0036] A preparation method of vinegar-acrylic emulsion adhesive, the method is specifically implemented as follows:

[0037] S1: Add 6 g of a mixture of polyvinyl alcohol 1788 and polyvinyl alcohol 1799 in a mass ratio of 1:1, 200 g of water, and slowly heat up to 90°C in a water bath to a four-necked flask equipped with a condenser and a stirrer;

[0038] S2: Lower the temperature to 50°C, add 8g of OP-10 solution, 30g of vinyl acetate, 15g of butyl acrylate and 13NaHCO3 solution, and colostrumize for 50 minutes;

[0039] S3: After primary emulsification, slowly raise the temperature to 80°C, then add 8g of initiator ammonium persulfate, and start to condense and reflux;

[0040] S4: When there is basically no condensing reflux in the condenser tube, mix 200g of vinyl acetate and 60g of butyl acrylate fully, add dropwise to the four-necked flask, and place it for 60 minutes after the dropwise addition is completed;

[0041] S5: Add 20g of acrylic acid, and dropwise add 15g ...

Embodiment 3

[0045] A preparation method of vinegar-acrylic emulsion adhesive, the method is specifically implemented as follows:

[0046] S1: Add 12g of a mixture of polyvinyl alcohol 1788 and polyvinyl alcohol 1799 in a mass ratio of 1:1, 280g of water, and slowly raise the temperature to 85°C in a water bath to a four-neck flask equipped with a condenser and a stirrer;

[0047] S2: Lower the temperature to 45°C, add 4g of OP-10 solution, 15g of vinyl acetate, 5g of butyl acrylate and 10g of NaHCO3 solution, and colostrum for 40 minutes;

[0048] S3: After primary emulsification, slowly raise the temperature to 70°C, then add 5g of initiator ammonium persulfate, and start to condense and reflux;

[0049] S4: When there is basically no condensing reflux in the condenser tube, mix 100g of vinyl acetate and 30g of butyl acrylate fully, add dropwise to the four-necked flask, and place it for 30 minutes after the dropwise addition is completed;

[0050] S5: Add 10g of acrylic acid, and drop ...

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Abstract

The invention discloses a preparation method of an acetone-acrylic emulsion adhesive, belonging to the technical field of adhesive preparation. The main components of the adhesive include polyvinyl alcohol mixture, OP-10 solution, vinyl acetate, butyl acrylate and NaHCO3 solution , ammonium persulfate, styrene monomer, silane coupling agent KH550, and dibutyl phthalate. The invention discloses a preparation method of a vinyl acetate-acrylate emulsion adhesive, which can greatly reduce the dipping and peeling rate of the adhesive and improve its gluing ability at the same time.

Description

technical field [0001] The invention relates to the technical field of adhesive preparation, in particular to a method for preparing an vinegar-acrylic emulsion adhesive. Background technique [0002] Adhesive refers to a kind of natural or synthetic, organic or inorganic substances that can connect two or more parts or materials together through the adhesion and cohesion of the interface, collectively referred to as glue. Adhesive, also known as adhesive. [0003] At present, most of the emulsion adhesives produced are made of homopolymerized vinyl acetate monomer. However, such adhesives have a very high dipping and peeling rate, and basically the glue will be opened after soaking in cold water, resulting in limited use. , and this type of adhesive is tested according to the national standard GB / T 17657-2013 "Test methods for physical and chemical properties of wood-based panels and veneered wood-based panels". The dry shear strength of wood is 4.5-6.5MPa, Adhesive stren...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J131/04C09J11/06C08F218/08C08F220/18C08F220/06C08F212/08C08F2/30
CPCC08F2/30C08F218/08C08K5/12C09J11/06C09J131/04C08F220/1804C08F220/06C08F212/08
Inventor 贺磊谢阳志刘斌王玉王小东
Owner JIANGXI ACAD OF FORESTRY