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Pressure-sensitive adhesive using starch as matrix material and manufacture method thereof

A base material and pressure-sensitive adhesive technology, applied in the field of pressure-sensitive adhesives, can solve problems that have not been reported

Active Publication Date: 2008-08-20
广东宏昌新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, a large number of degradable materials have been used, such as cellulose acetate film, natural fiber cloth and paper, etc., but the degradable pressure-sensitive adhesive matrix material used as the main body of adhesive tape has not been reported at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1. Formula (by mass percentage)

[0041] components

Dosage

components

Dosage

corn starch

1.46

acrylic

0.48

Hydroxyethyl Acrylate

0.80

2-Ethylhexyl Acrylate

14.00

n-butyl acrylate

19.27

Acrylonitrile

1.00

hydrogen peroxide

0.50

Sodium hydroxide solution (20

%)

0.40

Cerium nitrate

0.06

tert-butyl hydroperoxide

0.03

potassium persulfate

0.06

Formaldehyde sulfoxylate

sodium

0.02

Sodium dodecyl sulfate

0.30

Ammonia

0.02

Co436

0.40

Deionized water

61.00

sodium bicarbonate

0.20

[0042] 2. Preparation method

[0043] a. Starch oxidative hydrolysis

[0044] Add all the cornstarch into deionized water dissolved in 20% sodium hydroxide solution and stir, add ...

Embodiment 2

[0061] 1. Reaction steps:

[0062] a. Starch oxidative hydrolysis

[0063] All 1 g of glutinous rice starch was added into deionized water dissolved with 0.1 g of 20% sodium bicarbonate solution and stirred. After 1 hour, 10 g of hypochlorous acid was added and reacted at 70° C. for 1 hour to obtain a starch graft matrix mixture.

[0064] b. Stabilization of starch graft matrix

[0065] Stir the starch graft base obtained above at a rate of 200 r / min, slowly add 0.2 g of octylphenol polyoxyethylene ether deionized aqueous solution dropwise, and stir for 10 minutes to obtain a stable starch emulsifier mixture.

[0066] c. Individual pre-milk

[0067] Dissolve 0.1g of sodium sulfosuccinate in deionized water and stir evenly, then gradually add 20g of methacrylic acid, 20g of hydroxyethyl propyl acrylate, and 18g of styrene, and stir at a speed of 100r / min for 60 minutes to prepare a pre-emulsion mixture.

[0068] d. Starch matrix contact

[0069] After dissolving 0.01g of c...

Embodiment 3

[0081] a. Starch oxidative hydrolysis

[0082] Add 20 g of glutinous rice starch and corn starch into deionized water dissolved in 10 g of 20% potassium hydroxide solution and stir, then add 0.1 g of sodium hypochlorite and react at 40° C. for 3 hours to obtain a starch graft base mixture.

[0083] b. Stabilization of starch graft matrix

[0084] Stir the starch graft base obtained above at a rate of 100 r / min, slowly dropwise add 0.8 g of a deionized aqueous solution of alkyl diphenyl ether disulfonate, and stir for 60 minutes to obtain a stable starch emulsifier mixture.

[0085] c. Individual pre-milk

[0086] Dissolve 0.2 g of sodium dodecylbenzenesulfonate in deionized water and stir evenly, then add 20 g of butylene maleate, and stir at a speed of 200 r / min for 20 minutes to prepare a pre-emulsion mixture.

[0087] d. Starch matrix contact

[0088] After dissolving 1g of cerium nitrate in deionized water, slowly drop it into the starch emulsifier mixture prepared in b...

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Abstract

The invention relates to a pressure sensitive adhesive using starch as substrate material, in particular to a pressure sensitive adhesive which is prepared by taking starch as substrate material and causing graft monomer to be grafted and copolymerized on the substrate material, and the preparation method of the pressure sensitive adhesive. The main components of the pressure sensitive adhesive of the invention comprise starch graft monomer copolymer prepared by starch substrate and graft monomer. The preparation method uses monomer mixture to take grafting and copolymerization on starch molecular surface, and embeds degradable starch chain segment on the formed high polymer long chain to reach the aim of realizing the degradable pressure sensitive property of polymer. According to the principle, the degradable pressure sensitive adhesive, with starch as substrate, and acrylates and other monomer mixtures as grafting monomer and prepared after repeated experiments, reaches the requirement of the application property of the pressure sensitive adhesive.

Description

technical field [0001] The invention relates to a pressure-sensitive adhesive using starch as a base material, in particular to a pressure-sensitive adhesive made by grafting and copolymerizing graft monomers on the base material with starch as the base material, and the pressure-sensitive adhesive method of preparation. Background technique [0002] Pressure sensitive adhesive is a very widely used material and plays an important role in packaging, office, medical, automobile manufacturing and other industries. There are two main types of materials used to make pressure sensitive adhesives, rubber and acrylics. Early pressure-sensitive adhesives were mainly solvent-based rubber and emulsion-type acrylic copolymers, both of which contained a large amount of solvents, which would cause serious environmental pollution during the process of glue synthesis and tape preparation, causing a series of Environmental issues. With the improvement of environmental protection laws and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J151/02C09J7/02
Inventor 孙大伟吴伟卿
Owner 广东宏昌新材料科技有限公司
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