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Organosilicone modified acrylate, silane modified polyether adhesive and preparation methods thereof

A silane-modified polyether and acrylate technology, used in the field of sealants, can solve the problems of slow curing rate (generally 5-7 days to fully cure, low mechanical strength, and inability to UV curing, etc.) Insufficient mechanical properties, high mechanical strength, and the effect of increasing reactive crosslinking density

Active Publication Date: 2021-07-30
GUANGZHOU BAIYUN CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional silane-modified polyether adhesive cannot be cured by ultraviolet light, and also has the defects of slow curing rate (generally takes 5-7 days to fully cure) and low mechanical strength (≤5MPa), which limits its application in locomotives. , aerospace, circuit boards and electronic devices and other industries

Method used

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  • Organosilicone modified acrylate, silane modified polyether adhesive and preparation methods thereof
  • Organosilicone modified acrylate, silane modified polyether adhesive and preparation methods thereof
  • Organosilicone modified acrylate, silane modified polyether adhesive and preparation methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] The silane-modified polyether glue provided in this example is prepared from the following components in parts by weight:

[0089]

[0090]

[0091] The preparation method of described silane modified polyether glue is as follows:

[0092] 1. Preparation of Silicone Modified Acrylic Ester:

[0093] (1) The preparation of terminal isocyanate polymer, its reaction formula is as follows:

[0094]

[0095] Add benzene into the reaction kettle, slowly add polyetheramine D230 (its molecular weight is 230, polyetheramine D230:benzene = 1:1 (molar ratio)) under low-speed stirring, pass through condensed water to cool, and the water bath maintains the temperature at 0°C. After 3 hours, add pyridine and benzene-soluble solid phosgene (the chemical name of solid phosgene is bis(trichloromethyl) carbonate, referred to as BTC; in molar ratio, polyetheramine D230:pyridine = 1:0.1, solid phosgene: benzene = 1:1, polyetheramine: solid phosgene = 1:1), heat up to 60°C, react ...

Embodiment 2

[0102] The silane-modified polyether glue provided in this example is prepared from the following components in parts by weight:

[0103]

[0104] The preparation method of described silane modified polyether glue is as follows:

[0105] 1. Preparation of Silicone Modified Acrylic Ester:

[0106] (1) The preparation of terminal isocyanate polymer, its reaction formula is as follows:

[0107]

[0108] Add benzene into the reaction kettle, slowly add polyetheramine D400 (its molecular weight is 400, polyetheramine:benzene = 1:2 (molar ratio)) under low-speed stirring, pass through condensed water to cool, and maintain the temperature in the water bath at 30°C for 1h Finally, add pyridine and benzene-soluble solid phosgene to the reactor in sequence (by molar ratio, polyetheramine:pyridine=1:0.5, solid phosgene:benzene=1:2, polyetheramine D400:solid light Gas = 2:1), heated up to 40°C, reacted for 5 hours, filtered with suction, and fractionated to obtain isocyanate-termi...

Embodiment 3

[0115] The silane-modified polyether glue provided in this example is prepared from the following components in parts by weight:

[0116]

[0117] The preparation method of described silane modified polyether glue is as follows:

[0118] 1. Preparation of Silicone Modified Acrylic Ester:

[0119] (1) The preparation of terminal isocyanate polymer, its reaction formula is as follows:

[0120]

[0121] Add benzene into the reaction kettle, slowly add polyetheramine D2000 (its molecular weight is 2000, polyetheramine D2000: benzene = 1:1.5 (molar ratio)) under low-speed stirring, cool with condensed water, and maintain the temperature in the water bath at 5°C. After 2 hours, add pyridine and benzene-soluble solid phosgene to the reactor in sequence (by molar ratio, polyetheramine D2000:pyridine=1:0.3, solid phosgene:benzene=1:1.4, polyetheramine D2000: After solid phosgene=1.3:1), heat up to 80°C, react for 1 hour, filter with suction, and fractionally distill to obtain i...

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Abstract

The invention discloses organic silicon modified acrylate, a silane modified polyether adhesive and preparation methods thereof. The organic silicon modified acrylate has a structure as shown in a formula I. The silane modified polyether adhesive is prepared from the following raw materials in parts by weight: 100 parts of organic silicon modified acrylate, 10-30 parts of silane modified polyether resin, 1-10 parts of a plasticizer, 1-5 parts of vapor white carbon black, 1-5 parts of a diluent, 1-4 parts of a photoinitiator and 0.5-3 parts of a catalyst. The silane modified polyether adhesive can be rapidly cured and shaped, a shadow area can be completely cured through moisture, and meanwhile the silane modified polyether adhesive has outstanding high and low temperature resistance, excellent flexibility, good mechanical performance, high mechanical strength and high elongation at break.

Description

technical field [0001] The invention relates to the technical field of sealants, in particular to a silicone-modified acrylate and silane-modified polyether glue and a preparation method thereof. Background technique [0002] UV curing is a type of radiation curing. Radiation curing uses electromagnetic radiation, such as ultraviolet (UV) or electron beam (EB), to irradiate the coating to produce reactions such as radiation polymerization, radiation crosslinking and radiation grafting. A chemical process that quickly converts low-molecular-weight substances into high-molecular-weight products. The curing is carried out directly on the substrate without heating. The system contains no solvent or a very small amount of solvent, so the VOC (volatile organic compound) emission is very low. . It has the characteristics of high efficiency, pollution resistance, energy saving, simplicity, etc. It is an environmentally friendly green technology, so it is widely cited in the manufac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/77C08G18/67C08G18/28C09J175/14C09J11/04C09J11/08C09J4/02C09J4/06
CPCC08G18/771C08G18/672C08G18/289C09J175/14C09J11/04C09J11/08C09J4/06C08L2201/08C08L2205/03C08L71/00C08K7/26
Inventor 陈洋庆陈建军高敏华唐华黄恒超缪明松
Owner GUANGZHOU BAIYUN CHEM IND