Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of organosilicon modified high temperature resistant pressure-sensitive adhesive, pressure-sensitive adhesive tape and preparation method thereof

A technology of high temperature resistance and silicone, applied in the field of pressure-sensitive adhesives, can solve problems such as difficult to achieve high temperature resistance, poor chemical structure uniformity, prone to residual glue or ghosting, etc., to improve stability and leveling, initial Good viscous performance, the effect of improving the initial tack performance

Active Publication Date: 2020-06-02
GUANGDONG DONGLI NEW MATERIALS SCI & TECH CO LTD
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pure solvent-based acrylic pressure-sensitive adhesives are difficult to achieve good high-temperature resistance, and high-temperature residues or ghosting are prone to occur. The reason is that solvent-based acrylic pressure-sensitive adhesives are mainly synthesized by free radical polymerization. The molecular weight of copolymers synthesized by this method Wide distribution, poor uniformity of chemical structure, and low molecular weight copolymers in high temperature environment have poor heat resistance, which leads to the phenomenon of residual glue or ghosting

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of organosilicon modified high temperature resistant pressure-sensitive adhesive, pressure-sensitive adhesive tape and preparation method thereof
  • A kind of organosilicon modified high temperature resistant pressure-sensitive adhesive, pressure-sensitive adhesive tape and preparation method thereof
  • A kind of organosilicon modified high temperature resistant pressure-sensitive adhesive, pressure-sensitive adhesive tape and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A high-temperature-resistant pressure-sensitive adhesive with excellent performance and a pressure-sensitive adhesive tape using the pressure-sensitive adhesive, the preparation process of which is as follows:

[0028] 1) Synthesis of acrylic acid-2-octyl-1-dodecyl monomer

[0029] Dissolve 90 parts of 2-octyldodecanol and 25 parts of acrylic acid in 100 parts of dichloromethane, add 9 parts of 4-dimethylaminopyridine and 9 parts of 1-(3-bis Methylaminopropyl)-3-ethylcarbodiimide hydrochloride, the temperature was controlled at 20°C, and the reaction was carried out for 90 hours to prepare 2-octyldodecyl acrylate in Example 1.

[0030] 2) Synthesis of Silicone Modified High Temperature Pressure Sensitive Adhesive

[0031] According to the mass parts of raw materials, 80 parts of acrylate-2-octyldodecyl, 5 parts of acrylic acid, 10 parts of N-hydroxyethyl acrylamide, 8 parts of polyester-modified polydimethylsilane containing acrylic acid functional groups Oxygen, 0.00...

Embodiment 2

[0035] A high-temperature-resistant pressure-sensitive adhesive with excellent performance and a pressure-sensitive adhesive tape using the pressure-sensitive adhesive, the preparation process of which is as follows:

[0036] 1) Synthesis of acrylic acid-2-octyl-1-dodecyl monomer

[0037] Dissolve 75 parts of 2-octyldodecanol and 25 parts of acrylic acid in 90 parts of dichloromethane in parts by mass of raw materials, add 8 parts of 4-dimethylaminopyridine and 8 parts of 1-(3-di Methylaminopropyl)-3-ethylcarbodiimide hydrochloride, the temperature was controlled at 25°C, and the reaction was carried out for 80 hours to prepare Example 2-2-octyldodecyl acrylate.

[0038] 2) Synthesis of Silicone Modified High Temperature Pressure Sensitive Adhesive

[0039] According to the mass parts of raw materials, 70 parts of acrylate-2-octyldodecyl, 12 parts of acrylic acid, 5 parts of N-hydroxyethyl acrylamide, 7 parts of polyester-modified polydimethylsilane containing acrylic acid fu...

Embodiment 3

[0043] A high-temperature-resistant pressure-sensitive adhesive with excellent performance and a pressure-sensitive adhesive tape using the pressure-sensitive adhesive, the preparation process of which is as follows:

[0044] 1) Synthesis of acrylic acid-2-octyl-1-dodecyl monomer

[0045] Dissolve 60 parts of 2-octyldodecanol and 20 parts of acrylic acid in 60 parts of dichloromethane in parts by mass of raw materials, add 5 parts of 4-dimethylaminopyridine and 5 parts of 1-(3-di Methylaminopropyl)-3-ethylcarbodiimide hydrochloride, the temperature was controlled at 30°C, and the reaction was carried out for 50 hours to prepare 2-octyldodecyl acrylate in Example 3.

[0046] 2) Synthesis of Silicone Modified High Temperature Pressure Sensitive Adhesive

[0047] According to the mass parts of raw materials, 50 parts of acrylate-2-octyldodecyl, 5 parts of acrylic acid, 12 parts of N-hydroxyethyl acrylamide, 3 parts of polyester-modified polydimethylsiloxane containing acrylic ac...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a silicone-modified high-temperature-resistant pressure-sensitive adhesive, which uses 2-octyl-1-dodecyl acrylate and polyester-modified polydimethylsiloxane containing acrylic acid functional groups to make the adhesive The properties of the high-temperature-resistant monomer and the high-temperature-resistant silicone monomer work together efficiently and exhibit excellent compatibility and adaptability, and further adjust other raw material components to have a higher degree of adaptability, making the pressure-sensitive adhesive It can be polymerized by a controllable active polymerization method, and has the advantages of low modulus, good hydrophobicity, good initial tack, and good leveling performance, and enhances the moisture resistance, heat resistance, impact resistance, and durability of the pressure-sensitive adhesive. performance such as aging. The invention also discloses a preparation method of the pressure-sensitive adhesive, a pressure-sensitive adhesive tape using the pressure-sensitive adhesive and a preparation method thereof.

Description

technical field [0001] The invention relates to the field of polymer functional materials, in particular to a pressure-sensitive adhesive. Background technique [0002] In recent years, the market in the field of electronic machinery manufacturing has a greater demand for high temperature resistant pressure sensitive tapes. During thermal processing, the pressure-sensitive adhesive tape may be subjected to high temperature (120-260°C) for a period of time (such as 30-60 minutes) for surface heat treatment. Acrylic pressure-sensitive adhesives are currently the most widely used pressure-sensitive adhesives. They have good transparency, excellent weather resistance and heat resistance, no phase separation and migration, and are suitable for the field of electronic machinery manufacturing. [0003] Acrylic pressure-sensitive adhesives can be divided into pure solvent-type acrylic pressure-sensitive adhesives, emulsion-type acrylic pressure-sensitive adhesives and solvent-free ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09J151/08C08F283/12C08F220/18C08F220/06C08F220/58C09J7/25C09J7/38
CPCC09J7/25C09J7/38C09J151/08C08F283/124C08F2438/03C09J2477/006C09J2451/00C09J2301/122C09J2301/302C08F220/1812C08F220/58
Inventor 任耀彬
Owner GUANGDONG DONGLI NEW MATERIALS SCI & TECH CO LTD