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A kind of biomass modified pressure-sensitive adhesive and preparation method thereof

A technology of pressure-sensitive adhesives and biomass, applied in the direction of pressure-sensitive films/sheets, adhesives, ester copolymer adhesives, etc., can solve problems such as easy agglomeration, complicated operation, and high production cost

Active Publication Date: 2020-07-07
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are many methods for modifying water-based acrylate pressure-sensitive adhesives. The commonly used methods are blending modification, tackifying resin modification, reactive emulsifier modification, and cross-linking modification, but the operation is complicated and the production cost is high.
At the same time, inorganic nanoparticle modification is more popular, such as silica, titanium dioxide, etc., but the advantages of nanoparticle size cannot be brought into play due to the tendency of agglomeration of nanoparticles during the polymerization process.

Method used

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  • A kind of biomass modified pressure-sensitive adhesive and preparation method thereof
  • A kind of biomass modified pressure-sensitive adhesive and preparation method thereof
  • A kind of biomass modified pressure-sensitive adhesive and preparation method thereof

Examples

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Effect test

Embodiment 1

[0045] A kind of biomass modified waterborne acrylate pressure-sensitive adhesive, proportioning by weight is 72 parts of butyl acrylate (BA), 21 parts of 2-ethylhexyl acrylate (2-EHA), methyl methacrylate (MMA ) 4 parts, 2 parts of hydroxyethyl acrylate (HEA), 1 part of acrylic acid (AA), 0.5 parts of nanocellulose (CNC), 1 part of emulsifier (CO436), sodium bicarbonate (NaHCO3 ) 0.2 part, 70 parts of deionized water, 0.45 part of initiator ammonium persulfate (APS).

[0046] The preparation method is to add an emulsifier and 34 parts of water to the reaction kettle to dissolve the emulsifier, then add various monomers and nanocellulose, and quickly emulsify at 45°C to form a pre-emulsion; take one tenth of the above-mentioned pre-emulsion Pour it into another reaction kettle, add 30 parts of water and sodium bicarbonate, stir to dissolve, mix evenly, then dissolve one-third of the initiator in 3 parts of water and add it to the reaction kettle, heat up to 85°C for reaction, ...

Embodiment 2

[0048] A biomass-modified water-based acrylate pressure-sensitive adhesive, comprising 72 parts by weight of butyl acrylate, 21 parts of 2-ethylhexyl acrylate, 4 parts of methyl methacrylate, 2 parts of hydroxyethyl acrylate, 1 part of acrylic acid, 1 part of nanocellulose, 1 part of emulsifier (CO436), 0.2 part of sodium bicarbonate, 70 parts of deionized water, and 0.45 part of initiator ammonium persulfate.

[0049] The preparation method is to add an emulsifier and 34 parts of water to the reaction kettle to dissolve the emulsifier, then add various monomers and nanocellulose, and quickly emulsify at 45°C to form a pre-emulsion; take one tenth of the above-mentioned pre-emulsion Pour it into another reaction kettle, add 30 parts of water and sodium bicarbonate, stir to dissolve, mix evenly, then dissolve one-third of the initiator in 3 parts of water and add it to the reaction kettle, heat up to 85°C for reaction, After the emulsion turns blue, continue to react for half a...

Embodiment 3

[0051] A biomass-modified water-based acrylate pressure-sensitive adhesive, the ratio by weight is 72 parts of monomer butyl acrylate (BA), 21 parts of 2-ethylhexyl acrylate (2-EHA), methyl methacrylate (MMA) 4 parts, hydroxyethyl acrylate (HEA) 2 parts, acrylic acid (AA) 1 part, modified nanocellulose (mCNC) 0.5 parts, emulsifier (CO436) 1 part, sodium bicarbonate (NaHCO 3 ) 0.2 part, 70 parts of deionized water, 0.45 part of initiator ammonium persulfate (APS).

[0052] The preparation method is to add an emulsifier and 34 parts of water into the reaction kettle to dissolve the emulsifier, then add various monomers and modified nanocellulose, and quickly emulsify at 45°C to form a pre-emulsion; take ten percent of the above-mentioned pre-emulsion Pour one part into another reaction kettle, add 30 parts of water and sodium bicarbonate, stir to dissolve, mix evenly, then dissolve one third of the initiator in 3 parts of water and add it to the reaction kettle, and heat up to 8...

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Abstract

The invention discloses a biomass modified pressure-sensitive adhesive and a preparation method thereof and belongs to the field of adhesives. The biomass modified pressure-sensitive adhesive is prepared from the following components in parts by weight: 40-98 parts of soft monomers, 2-15 parts of hard monomers, 0.1-5 parts of functional monomers, 0.5-5 parts of an emulsifier, 0.01-2 parts of an initiator, 1-5 parts of biomass and 30-80 parts of deionized water. The waterborne acryl ate pressure-sensitive adhesive modified by a biomass material has an excellent primary viscous force and stripping strength and can be widely applied to the field of adhesive tapes, memo paper, electronic packages and medical plasters.

Description

technical field [0001] The invention relates to a biomass modified pressure-sensitive adhesive and a preparation method thereof, belonging to the field of adhesives. Background technique [0002] Pressure-sensitive adhesive is a special type of adhesive. It only needs to apply appropriate pressure, and the pressure-sensitive adhesive can be bonded to the surface of the adherend in a short period of time to produce a bonding effect. Pressure-sensitive adhesives are mainly divided into two types: rubber type and resin type. The rubber type can be divided into natural rubber and synthetic rubber; the resin type mainly includes acrylate, silicone and polyurethane. At present, the most widely used and more environmentally friendly is water-based acrylic pressure-sensitive adhesive. [0003] Water-based acrylate pressure-sensitive adhesive is obtained by free radical copolymerization of various acrylate monomers. It has the advantages of simple preparation process, low cost, no ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/38C09J7/25C09J133/08C09J11/08C08F220/18C08F220/14C08F220/20C08F220/06C08F218/08C08F220/32
CPCC08F220/18C08F220/1804C09J7/255C09J7/385C09J11/08C09J133/066C09J133/068C09J2301/302C09J2301/312C09J2301/408C09J2301/414C09J2401/00C09J2403/00C09J2433/00C08L1/02C08L3/02C08F220/1808C08F218/08C08F220/20C08F220/325C08F220/14C08F220/06
Inventor 马丕明于清清钮德宇余鳗漫东为富陈明清
Owner JIANGNAN UNIV