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Acrylate pressure-sensitive adhesive, oriented polystyrene expansion adhesive tape as well as preparation method and application thereof

A technology of acrylate and dimethacrylate, which is used in oriented polystyrene expanded tape and its preparation, and in the field of acrylate pressure-sensitive adhesive, can solve the problem of unstable viscosity, inability to meet the use environment of electrolyte resistance, and unfavorable stable operation of batteries And other issues

Active Publication Date: 2021-09-17
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, the oriented polystyrene expansion tapes on the market basically use acrylic pressure-sensitive adhesives for ordinary tapes, which cannot meet the needs of electrolyte-resistant use environments, so problems such as unstable viscosity or degumming and falling off are prone to occur, which is not conducive to batteries. stable operation of

Method used

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  • Acrylate pressure-sensitive adhesive, oriented polystyrene expansion adhesive tape as well as preparation method and application thereof
  • Acrylate pressure-sensitive adhesive, oriented polystyrene expansion adhesive tape as well as preparation method and application thereof
  • Acrylate pressure-sensitive adhesive, oriented polystyrene expansion adhesive tape as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] The preparation monomer of the above-mentioned acrylate pressure sensitive adhesive includes a specific content of acrylate soft monomer, acrylate hard monomer, crosslinking monomer and functional monomer, and the functional monomer is selected from 3 (ethoxy) bisphenol A At least one of dimethacrylate, 2 (ethoxy) bisphenol A dimethacrylate, and 4 (ethoxy) bisphenol A dimethacrylate. By introducing 0.1wt% to 3wt% of the prepared monomer into the pressure-sensitive adhesive, a specific type of functional monomer containing bisphenol A group has good compatibility with acrylate prepolymers, and by polymerizing The reaction types bisphenol A functional groups into the polymer backbone of acrylate pressure-sensitive adhesives, giving acrylate pressure-sensitive adhesives excellent chemical resistance, corrosion resistance, heat resistance and weather resistance, and controlling glass transition temperature At -40℃~-30℃, the chemical resistance, corrosion resistance, heat re...

Embodiment 1

[0064] 1. To prepare the pressure-sensitive adhesive for oriented polystyrene expansion tape, the glass transition temperature of the formula in this example is Tg=-33.3°C, and each component is weighed according to the formula shown in Table 1:

[0065] The acrylate pressure sensitive adhesive component formula of table 1 embodiment 1

[0066]

[0067]

[0068] The acrylate pressure-sensitive adhesive of the present embodiment is prepared according to the following steps:

[0069] 1) respectively take by weighing each component according to the formula of table 1;

[0070] 2) nitrogen is passed into the reaction kettle to discharge air, then 80% of the solvent is added to the reaction kettle, and the temperature is raised to 78 ℃~80 ℃ reflux;

[0071] 3) adding the prepared monomer into the feeding kettle, then dissolving 80% of the initiator with 10% of the solvent and adding it to the feeding kettle, stirring evenly, to obtain the mixed prepolymerized monomer;

[00...

Embodiment 2

[0080] 1. To prepare the pressure-sensitive adhesive for oriented polystyrene expansion tape, the glass transition temperature of the formula in this example is Tg=-36.3°C, and each component is weighed according to the formula shown in Table 2:

[0081] The acrylate pressure sensitive adhesive component formula of table 2 embodiment 2

[0082]

[0083] The acrylate pressure-sensitive adhesive of the present embodiment is prepared according to the following steps:

[0084] 1) respectively take each component according to the formula of table 2;

[0085] 2) nitrogen is passed into the reaction kettle to discharge air, then 80% of the solvent is added to the reaction kettle, and the temperature is raised to 78 ℃~80 ℃ reflux;

[0086] 3) adding the prepared monomer into the feeding kettle, then dissolving 80% of the initiator with 10% of the solvent and adding it to the feeding kettle, stirring evenly, to obtain the mixed prepolymerized monomer;

[0087] 4) adding 20% ​​of t...

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Abstract

The invention provides an acrylate pressure-sensitive adhesive, an oriented polystyrene expansion adhesive tape as well as a preparation method and application thereof. The preparation monomers of the acrylate pressure-sensitive adhesive comprise the following components in percentage by mass: 20%-90% of acrylate soft monomer, 5%-80% of acrylate hard monomer, 1%-18% of crosslinking monomer and 0.1%-3% of functional monomer, wherein the functional monomer is selected from 3 (ethyoxyl) bisphenol A dimethacrylate, 2 (ethyoxyl) bisphenol A dimethacrylate and 4 (ethyoxyl) bisphenol A dimethacrylate; and the glass transition temperature of the acrylate pressure-sensitive adhesive is from -40 DEG C to -30 DEG C. By introducing a specific type of bisphenol A group-containing functional monomer into the pressure-sensitive adhesive and controlling the glass transition temperature of the pressure-sensitive adhesive, the acrylate pressure-sensitive adhesive has excellent chemical resistance, corrosion resistance, heat resistance and weather resistance, and is especially suitable for preparing the oriented polystyrene expansion adhesive tape.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to an acrylate pressure-sensitive adhesive, a directional polystyrene expansion tape, and a preparation method and application thereof. Background technique [0002] With the rapid development of the lithium battery industry, a variety of new materials have emerged around the lithium battery industry. Oriented polystyrene expanded tape is also a very important material. Oriented polystyrene expanded tape is made of directional stretched polystyrene film and then coated with a special acrylic pressure-sensitive adhesive. Oriented polystyrene expansion tape is mainly used for the winding of battery cells such as polymer lithium batteries, because it has the expansion function to solve the problem of gaps between the battery cells and the shell. At present, the oriented polystyrene expansion tapes on the market basically use acrylate pressure-sensitive adhesives for ordinary tapes, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J11/06C09J7/38C08F220/18C08F220/14C08F212/08C08F220/06C08F220/20C08F222/20
CPCC09J133/066C09J11/06C09J7/385C08F220/1804C09J2203/33C09J2301/302C09J2433/00C09J2425/006C09J2400/243C08K5/29C08F220/1808C08F220/14C08F212/08C08F220/06C08F220/20C08F222/102
Inventor 刘鹏伟
Owner 广东宏昌新材料科技有限公司
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