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A kind of polyvinyl acetal resin composition and resin-coated copper foil

A polyvinyl acetal resin, polyvinyl alcohol technology, applied in coatings, fire-resistant coatings, etc., can solve the problem of unsatisfactory peeling resistance and high temperature resistance, unstable adhesion between glue and copper foil, affecting resin-coated copper Foil quality and other issues, to achieve ideal peel strength, good washing effect, and excellent high temperature resistance.

Active Publication Date: 2018-07-31
建滔(佛冈)特种树脂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The existing glue made of PVB resin is not ideal in peeling resistance and high temperature resistance, and it is easy to cause unstable bonding between the glue and copper foil when applied to copper foil. In addition, copper foil resin often has the problem of unsatisfactory CTI value. , which will affect the quality of resin-coated copper foil

Method used

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  • A kind of polyvinyl acetal resin composition and resin-coated copper foil
  • A kind of polyvinyl acetal resin composition and resin-coated copper foil

Examples

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Effect test

Embodiment 1

[0032] Embodiment 1 polyvinyl acetal resin composition

[0033] The polyvinyl acetal resin composition comprises, in parts by mass, 80 parts of polyvinyl butyral, 2 parts of acetic acid and 18 parts of polyvinyl alcohol, and the degree of polymerization of the polyvinyl alcohol is 2100.

Embodiment 2

[0034] Embodiment two polyvinyl acetal resin composition

[0035] The polyvinyl acetal resin composition, in parts by mass, includes 79 parts of polyvinyl butyral, 2.5 parts of acetic acid and 18.5 parts of polyvinyl alcohol, and the degree of polymerization of the polyvinyl alcohol is 2150.

Embodiment 3

[0038] The preparation method of embodiment three polyvinyl acetal resin composition

[0039] The preparation method of polyvinyl acetal resin composition comprises the steps:

[0040] S1 Dissolve 34Kg of polyvinyl alcohol in water at a high temperature of 92°C to obtain an aqueous polyvinyl alcohol solution with a mass percentage of 9%, filter it, and place it in a reaction kettle;

[0041] S2 Cool down the reactor to 40°C, add an acid catalyst, acetaldehyde with 0.5% by weight of the polyvinyl alcohol and butyraldehyde with 18.5% by weight of the polyvinyl alcohol for acetalization reaction for 2 hours, then lower the temperature to 10°C , adding 30% butyraldehyde by weight of the polyvinyl alcohol, then slowly raising the temperature to 65° C. and keeping it warm for 3 hours to obtain a reaction product;

[0042] S3 Add sodium hydroxide solution to the reaction product to adjust the pH to 5.4, wash with water, separate by dehydration, and dry to obtain a polyvinyl acetal res...

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Abstract

The invention provides a polyvinyl acetal resin compound which contains the following materials in parts by weight: 75-85 parts of polyvinyl butyral, 1.8-2.5 parts of acetic acid and 15-20 parts of polyvinyl alcohol, wherein the polymerization degree of the polyvinyl alcohol is 1900-2500. The invention belongs to the technical field of resin. The high-performance polyvinyl acetal resin compound provided by the invention has excellent high temperature resistance performance and ideal CTI value and peel-resisting strength, can guarantee the viscosity meeting the requirement and can be used for replacing the existing PVB resin.

Description

technical field [0001] The invention belongs to the technical field of resins, and in particular relates to a polyvinyl acetal resin composition and resin-coated copper foil. Background technique [0002] Polyvinyl butyral (PVB) resin is formed by condensation of polyvinyl alcohol (PVA) and butyraldehyde under the conditions of a catalyst. It has excellent strength and toughness, resin compatibility and bridging properties are also very good. And it is non-toxic, odorless and non-corrosive, so it is widely used on copper foil. [0003] Chinese patent application CN 103193905 discloses a method for preparing a low-viscosity polyvinyl butyral resin. The method adopts a two-step precipitation method by adjusting the pH value of an aqueous solution of polyvinyl alcohol, adding a degradation agent and an accelerator, and then adjusting the polyvinyl butyral resin. The temperature of the vinyl alcohol aqueous solution is increased by adding an acid catalyst and n-butyraldehyde to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L29/14C08L29/04C08K5/09C08F16/06C08F8/28C09D129/14C09D129/04C09D7/63C09D7/65
CPCC08F8/28C08L29/14C08L2201/08C08L2205/02C09D5/18C09D7/63C09D7/65C09D129/14C08L29/04C08K5/09C08F16/06
Inventor 林家宝
Owner 建滔(佛冈)特种树脂有限公司
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