High-strength sealant for electronic product and preparation method of high-strength sealant

A technology for electronic products and sealants, applied in adhesives, non-polymer adhesive additives, non-polymer organic compound adhesives, etc., can solve the problems of low tear resistance, achieve long service life and reduce costs , excellent performance

Inactive Publication Date: 2019-02-15
HEFEI TONGYOU ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its tear strength is low

Method used

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  • High-strength sealant for electronic product and preparation method of high-strength sealant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A high-strength sealant for electronic products, comprising the following raw materials by weight: 25 parts of waste rubber, 20 parts of epoxy resin, 23 parts of acrylic acid, 6 parts of monolauryl phosphate, 5 parts of dioctyl phthalate, 7 parts of polyether polyol, 6 parts of nano calcium carbonate, 5 parts of titanium dioxide, 13 parts of epoxidized soybean oil, 17 parts of modified lignin, 7 parts of isocyanate, 7 parts of silane coupling agent, 6 parts of amine catalyst and antioxidant 3 parts of oxidizing agent.

[0032] A preparation method of high-strength sealant for electronic products, comprising the following preparation steps:

[0033] a. Mix nano-calcium carbonate, titanium dioxide and isocyanate, introduce into the reaction kettle, heat up to 88°C, vacuumize, carry out stirring reaction for 0.6h, then cool down to 75°C, and keep warm to obtain mixture 1;

[0034] b. Mix the modified lignin, polyether polyol, acrylic acid and amine catalyst, introduce int...

Embodiment 2

[0043] A high-strength sealant for electronic products, comprising the following raw materials by weight: 28 parts of waste rubber, 20 parts of epoxy resin, 19 parts of acrylic acid, 10 parts of monolauryl phosphate, 7 parts of dioctyl phthalate, 7 parts of polyether polyol, 9 parts of nano calcium carbonate, 6 parts of titanium dioxide, 10 parts of epoxidized soybean oil, 17 parts of modified lignin, 9 parts of isocyanate, 6 parts of silane coupling agent, 6 parts of amine catalyst and antioxidant 3 parts of oxidizing agent.

[0044] A preparation method of high-strength sealant for electronic products, comprising the following preparation steps:

[0045] a. Mix nano-calcium carbonate, titanium dioxide and isocyanate, introduce into the reaction kettle, heat up to 85°C, vacuumize, carry out stirring reaction for 0.6h, then cool down to 80°C and keep warm to obtain mixture 1;

[0046] b. Mix the modified lignin, polyether polyol, acrylic acid and amine catalyst, introduce int...

Embodiment 3

[0055] A high-strength sealant for electronic products, comprising the following raw materials by weight: 32 parts of waste rubber, 24 parts of epoxy resin, 21 parts of acrylic acid, 8 parts of monolauryl phosphate, 5 parts of dioctyl phthalate, 5 parts of polyether polyol, 7 parts of nano calcium carbonate, 9 parts of titanium dioxide, 12 parts of epoxidized soybean oil, 155 parts of modified lignin, 10 parts of isocyanate, 4 parts of silane coupling agent, 4 parts of amine catalyst and antioxidant 5 parts of oxidizing agent.

[0056] A preparation method of high-strength sealant for electronic products, comprising the following preparation steps:

[0057] a. Mix nano-calcium carbonate, titanium dioxide and isocyanate, introduce into the reaction kettle, heat up to 85-88°C, vacuumize, carry out stirring reaction for 0.6h, then cool down to 80°C and keep warm to obtain mixture 1;

[0058] b. Mix the modified lignin, polyether polyol, acrylic acid and amine catalyst, introduce...

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Abstract

The invention provides a high-strength sealant for an electronic product and a preparation method of the high-strength sealant. The high-strength sealant is prepared from the following components: waste rubber, epoxy resin, acrylic acids, monolauryl phosphate, dioctyl phthalate, polyether polyol, nano calcium carbonate, titanium dioxide, epoxidized soybean oil, modified lignin, isocyanate, a silane coupling agent, an amine catalyst and an antioxidant. The sealant prepared according to the preparation method provided by the invention has good pressure flow viscosity, Shore hardness, elongationat break and tensile strength, is high in pressure tightness, firm in adhesion, long in service life, excellent in performance and wide in application range; the preparation method is simple, and theraw material cost is relatively low; therefore, the high-strength sealant is suitable for industrial large-scale production.

Description

technical field [0001] The invention belongs to the technical field of sealant materials, in particular to a high-strength sealant for electronic products and a preparation method thereof. Background technique [0002] Polyurethane is a type of polymer containing repeating urethane segments on the main chain of macromolecules. It has high strength, strong tear resistance, good flexibility and wear resistance, excellent puncture resistance, oil resistance and medium corrosion resistance. It has many advantages and has been widely used in the fields of elastomers, coatings, adhesives or sealants. [0003] Polyurethane sealant is a sealant with polyurethane rubber and polyurethane prepolymer as the main components. Polyurethane sealant also has good tensile strength, excellent adhesion, elasticity, wear resistance, oil resistance, cold resistance and weather resistance, and is widely used in buildings, squares, highways as caulking sealing materials, and automobile manufacturi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J4/02C09J4/06C09J11/06C09J11/04
CPCC09J4/06C09J11/04C09J11/06
Inventor 李丹丹
Owner HEFEI TONGYOU ELECTRONICS TECH CO LTD
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