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An acrylic emulsion adhesive for bonding low surface energy substrates and its preparation method

An acrylate and low surface energy technology, applied in adhesive types, ester copolymer adhesives, etc., can solve problems such as long curing time, low initial adhesion, and reduced production efficiency, and achieve good sticking effect, The effect of high peel strength and high initial adhesion

Active Publication Date: 2022-04-01
SHANGHAI BAOLIJIA NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many methods use a small amount of co-solvent to help improve the bonding, which cannot meet the environmental protection standards of water-based adhesives; and most water-based adhesives have low initial adhesion and long curing time, which cannot be compared with solvent adhesives, reducing production efficiency. , which brings many bonding defects, such as bubbling, warping, etc.

Method used

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  • An acrylic emulsion adhesive for bonding low surface energy substrates and its preparation method
  • An acrylic emulsion adhesive for bonding low surface energy substrates and its preparation method
  • An acrylic emulsion adhesive for bonding low surface energy substrates and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Add 130g of water, 15g of seed emulsion and 0.5g of sodium dodecylbenzenesulfonate to the 1000ml four-neck flask equipped with an electric stirrer, condenser tube and thermometer, raise the temperature to 88°C, and add 0.2g Water-soluble initiator, start dripping oily phase and remaining 2g water-soluble initiator after 5 minutes, oily phase is by 100g deionized water, 2g anionic emulsifier, 10g methyl methacrylate, 20g styrene, 80g butyl acrylate, 300g of isooctyl acrylate and 5g of methacrylic acid MAA are added dropwise at a rate of 50% for the first half an hour, and then added dropwise at full speed. The whole dropping process lasts for 5 hours and the temperature is kept at 86-88°C. After the dropwise addition, keep warm for 1 hour, cool down to 75 degrees, use 1g of tert-butyl peroxide and 0.8g of white powder for post-treatment, after 1 hour of addition, cool down to below 40 degrees, add 50g of rosin emulsion Snowtack780, stir evenly, Adjust the pH to 7-8, filt...

Embodiment 2

[0060]Add 130g of water, 5g of seed emulsion and 0.5g of sodium dodecylbenzene sulfonate to the 1000ml four-necked flask equipped with electric stirrer, condenser and thermometer directly, raise the temperature to 88°C, and add 0.2g Water-soluble initiator, start dripping oily phase and remaining 2g water-soluble initiator after 5 minutes, oily phase is by 100g deionized water, 2g anionic emulsifier, 10g methyl methacrylate, 20g styrene, 80g butyl acrylate, 300g of isooctyl acrylate and 5g of methacrylic acid MAA are added dropwise at a rate of 50% for the first half an hour, and then added dropwise at full speed. The whole dropping process lasts for 5 hours and the temperature is kept at 86-88°C. After the dropwise addition, keep warm for 1 hour, lower the temperature to 75 degrees, use 1g of tert-butyl peroxide and 0.8g of white block for post-treatment, after 1 hour of addition, cool down to below 40 degrees, add 50g of rosin emulsion Snowtack 780, and stir evenly , adjust ...

Embodiment 3

[0062] Add 130g of water, 15g of seed emulsion and 1g of sodium dodecylbenzene sulfonate directly into a 1000ml four-necked flask equipped with an electric stirrer, condenser and thermometer, raise the temperature to 88°C, and add 0.2g of water-soluble After 5 minutes, start dripping oily phase and remaining 2g water-soluble initiator, oily phase is by 100g deionized water, 2g anionic emulsifier, 10g methyl methacrylate, 20g styrene, 80g butyl acrylate, 300g Isooctyl acrylate and 5g of methacrylic acid MAA are added dropwise at a rate of 50% for the first half hour, and then added dropwise at full speed. The whole drop process lasts for 5 hours, and the temperature is kept at 86-88°C. After the dropwise addition, keep warm for 1 hour, cool down to 75 degrees, use 1g of tert-butyl peroxide and 0.8g of white powder for post-treatment, after 1 hour of addition, cool down to below 40 degrees, add 100g of rosin emulsion Snowtack780, stir evenly, Adjust the pH to 7-8, filter and dis...

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Abstract

The invention discloses an acrylic emulsion adhesive emulsion used for bonding low surface energy substrates, which includes the following components: water phase: 100 to 150 parts of water; 0 to 1 part of anionic emulsifier; 10 to 20 parts Seed emulsion; oil phase: 100 to 150 parts of deionized water; 1 to 3 parts of anionic emulsifier; 0 to 10 parts of methyl methacrylate; 5 to 20 parts of styrene; 50 to 100 parts of butyl acrylate; 250 ~400 parts of isooctyl acrylate; 1-10 parts of MAA methacrylate; others include, 2.1-2.5 parts of water-soluble initiator; 0.1-2.0 parts of oxidizing agent; 0.1-2.0 parts of reducing agent; 5-20 parts of rosin emulsion. The invention also discloses its preparation method. The acrylate emulsion adhesive of the present invention does not contain organic solvents, has fast tackiness, high initial tack, and high peel strength. It can meet the material breaking standard for some low surface energy base materials; it has good adhesion retention effect and can withstand high and low temperature environments. Ageing.

Description

technical field [0001] The invention relates to the technical field of emulsion adhesive preparation, in particular to an acrylate emulsion adhesive emulsion used for bonding low surface energy substrates and a preparation method thereof. Background technique [0002] Due to the characteristics of low surface energy and low polarity, it has been difficult to achieve satisfactory strength for bonding low surface energy substrates, such as PP\PE. A variety of surface treatment agents (high-acid reagents, CPP emulsions, etc.), surface treatment methods (corona, plasma treatment), and changes in the properties of the substrate itself (changing its polarity) have been developed at home and abroad to improve the low surface area. capable of substrate bonding. This pretreatment method can change the surface characteristics of the base material so as to improve the bonding strength, but the process is complicated and the cost is high, which brings a burden to the industrial and civ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/08C08F220/18C08F220/14C08F212/08C08F220/06C08F2/26C08F4/40
CPCC09J133/08C08F220/18C08F2/26C08F4/40C08F220/1808C08F220/14C08F212/08C08F220/1804C08F220/06
Inventor 李峰李开波
Owner SHANGHAI BAOLIJIA NEW MATERIAL CO LTD
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