Emulsion type rubber pressure-sensitive adhesive and preparation method thereof

A pressure-sensitive adhesive, emulsion type technology, used in adhesives, adhesive types, graft polymer adhesives, etc. The application range of pressure-sensitive adhesives, etc., to achieve the effect of improving water resistance, high peel strength, and overcoming fogging.

Active Publication Date: 2020-05-08
无锡达美新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Latex-type rubber pressure-sensitive adhesives do not need to use organic solvents during the preparation process, and are environmentally friendly products. However, compared with solvent-type rubber pressure-sensitive adhesives, their initial adhesion and peel strength are weaker, and the laminate is prone to fogging. These defects limit the scope of application of latex rubber pressure sensitive adhesives

Method used

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  • Emulsion type rubber pressure-sensitive adhesive and preparation method thereof
  • Emulsion type rubber pressure-sensitive adhesive and preparation method thereof
  • Emulsion type rubber pressure-sensitive adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] An emulsion type rubber pressure-sensitive adhesive, prepared by the following method:

[0029] (1) Preparation of pre-emulsion: 80 kg of methyl methacrylate, 60 kg of butyl acrylate, 10 kg of acrylic acid, 3 kg of sodium styrene sulfonate, and 150 kg of deionized water are placed in a pre-emulsification kettle, fully stirred, Prepare a pre-emulsion;

[0030] (2) Polymerization reaction: Add 430 kg of natural rubber emulsion, 3 kg of sodium bicarbonate, and 4 kg of ammonium persulfate into the reaction kettle, mix well, start to add the pre-emulsion liquid dropwise, stir while adding dropwise, and heat up to 65°C Carry out the polymerization reaction, complete the dropwise addition in 6 hours, keep the temperature for 3 hours, cool down to about 40°C, and filter to obtain the modified rubber emulsion;

[0031] (3) Preparation of pressure-sensitive adhesive: put the modified rubber emulsion, 250 kg of terpene resin and 10 kg of amino resin in a stirring tank, and stir e...

Embodiment 2

[0033] An emulsion type rubber pressure-sensitive adhesive, prepared by the following method:

[0034] (1) Preparation of pre-emulsion: 100 kg of methyl acrylate, 50 kg of acrylonitrile, 100 kg of ethyl acrylate, 20 kg of methacrylic acid, 5 kg of propyl sulfonate sodium methacrylate, 5 kg of ethyl methacrylate Sodium sulfonate and 200 kilograms of deionized water are placed in a pre-emulsification kettle and fully stirred to obtain a pre-emulsion;

[0035] (2) Polymerization reaction: Add 300 kg of natural rubber emulsion, 5 kg of sodium hydrogen phosphate, and 8 kg of potassium persulfate into the reaction kettle, mix well, start adding the pre-emulsion liquid dropwise, stir while adding dropwise, and raise the temperature to 70°C Carry out the polymerization reaction, complete the dropwise addition in 5 hours, keep the temperature for 3 hours, cool down to about 35°C, and filter to obtain the modified rubber emulsion;

[0036] (3) Preparation of pressure-sensitive adhesive...

Embodiment 3

[0038] An emulsion type rubber pressure-sensitive adhesive, prepared by the following method:

[0039] (1) Preparation of pre-emulsion: 50 kg of acrylamide, 30 kg of butyl methacrylate, 5 kg of hydroxyethyl acrylate, 2 kg of sodium methacrylate, and 175 kg of deionized water were placed in a pre-emulsification kettle. Stir fully to obtain a pre-emulsion;

[0040] (2) Polymerization reaction: Add 500 kg of natural rubber emulsion, 1 kg of ammonium bicarbonate, and 2 kg of ammonium persulfate into the reaction kettle, mix well, start to add the pre-emulsion liquid dropwise, stir while adding, and raise the temperature to 80°C Carry out the polymerization reaction, complete the dropwise addition in 4 hours, keep the temperature for 3 hours, cool down to about 30°C, and filter to obtain the modified rubber emulsion;

[0041] (3) Preparation of pressure-sensitive adhesive: Put the modified rubber emulsion, 230 kg of petroleum resin and 5 kg of hexamethylene diisocyanate in a stirr...

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Abstract

The invention provides an emulsion type rubber pressure-sensitive adhesive and a preparation method thereof, and relates to the technical field of high polymer materials. The emulsion type rubber pressure-sensitive adhesive is prepared from, by weight, 30-50% of a natural rubber emulsion, 5-15% of a hard monomer, 3-10% of a soft monomer, 0.5-2% of a functional monomer, 0.1-1% of a self-emulsifyingcomonomer, 15-30% of tackifying resin, 10-20% of water, 0.1-1% of an initiator, 0.5-2% of a cross-linking agent and 0.1-0.5% of a buffering agent. The emulsion type rubber pressure-sensitive adhesivehas the advantages of high initial adhesion, high peel strength and difficulty in fogging.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to an emulsion-type rubber pressure-sensitive adhesive and a preparation method thereof. Background technique [0002] At present, rubber pressure-sensitive adhesives can be divided into solvent-type rubber pressure-sensitive adhesives and emulsion-type rubber pressure-sensitive adhesives. Solvent-type rubber pressure-sensitive adhesives will emit a large amount of volatile organic compounds (VOCs) during the coating process, which not only causes serious damage to the environment pollution, but also cause greater harm to the physical and mental health of users. Existing studies have shown that VOC can cause imbalance in the immune level of the human body, affect the function of the central nervous system, and cause symptoms such as dizziness, headache, drowsiness, weakness, and chest tightness. It may also affect the digestive system, causing symptoms such as loss of appe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J151/04C09J145/00C09J161/20C09J193/04C09J157/02C09J11/08C09J11/06C08F253/00C08F220/14C08F220/18C08F220/06C08F212/14C08F220/46C08F220/56
CPCC08F253/00C08L2205/03C09J11/06C09J11/08C09J151/04C08L45/00C08L61/20C08L93/04C08L57/02C08K5/3412C08K5/29C08F220/14C08F220/56
Inventor 王洪陈宏智何振能
Owner 无锡达美新材料有限公司
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