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Preparation method of curable silicon-based hybrid resin

A technology of resin and polysiloxane, applied in coatings, adhesives, etc., can solve the problems of mechanical properties, hardness, and product status cannot be fully assembled, and achieve excellent adhesion, fast surface drying, and good mechanical properties.

Active Publication Date: 2021-12-10
广东致格纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent obtained silicone resin for the preparation of hot melt adhesives, its mechanical properties, hardness and product status cannot meet the needs of many scenarios

Method used

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  • Preparation method of curable silicon-based hybrid resin
  • Preparation method of curable silicon-based hybrid resin
  • Preparation method of curable silicon-based hybrid resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The preparation method of curable silicon-based hybrid resin comprises the following steps:

[0025] Step 1. Add amino-terminated linear polysiloxane with a number average molecular weight of 4000 into a three-necked flask, dehydrate under vacuum at 110°C for 1 hour, then pass in nitrogen gas, add hexamethylene diisocyanate dropwise while stirring, and obtain intermediate Product I;

[0026] Step 2. Diallyl isocyanurate is added to a three-necked flask, nitrogen is introduced, heated and melted, and isocyanate propyltriethoxysilane is added dropwise while stirring, and the intermediate product II is obtained after the reaction is completed;

[0027] Step 3, mixing the intermediate product I, the intermediate product II and the photoinitiator TPO according to the mass ratio of 90:10:3 to obtain a curable silicon-based hybrid resin;

[0028] In said step 1, the molar ratio of amino group to isocyanate group is 1:1.1;

[0029] In the second step, the molar ratio of diall...

Embodiment 2

[0031] The preparation method of curable silicon-based hybrid resin comprises the following steps:

[0032] Step 1. Add amino-terminated linear polysiloxane with a number-average molecular weight of 2000 into a three-necked flask, vacuum dehydrate at 110°C for 1 hour, then pass in nitrogen, add toluene diisocyanate dropwise while stirring, and obtain intermediate product I after the reaction is completed;

[0033] Step 2. Diallyl isocyanurate is added to a three-necked flask, nitrogen is introduced, heated and melted, and isocyanate propyltriethoxysilane is added dropwise while stirring, and the intermediate product II is obtained after the reaction is completed;

[0034] Step 3, mixing the intermediate product I, the intermediate product II and the photoinitiator TPO-L according to the mass ratio of 80:20:1 to obtain a curable silicon-based hybrid resin;

[0035] In said step 1, the molar ratio of amino group to isocyanate group is 1:1.05;

[0036] In the second step, the mo...

Embodiment 3

[0038] The preparation method of curable silicon-based hybrid resin comprises the following steps:

[0039] Step 1. Add amino-terminated linear polysiloxane with a number average molecular weight of 6000 into a three-necked flask, dehydrate under vacuum at 110°C for 1 hour, then blow in nitrogen, add isophorone diisocyanate dropwise while stirring, and obtain intermediate Product I;

[0040] Step 2. Diallyl isocyanurate is added to a three-necked flask, nitrogen is introduced, heated and melted, and isocyanate propyltriethoxysilane is added dropwise while stirring, and the intermediate product II is obtained after the reaction is completed;

[0041] Step 3, mix the intermediate product I, the intermediate product II and the photoinitiator 1173 according to the mass ratio of 90:10:5 to obtain the curable silicon-based hybrid resin;

[0042] In said step 1, the molar ratio of amino group to isocyanate group is 1:1.25;

[0043] In the second step, the molar ratio of diallyl iso...

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Abstract

The invention relates to the field of silicon-based resin, in particular to a preparation method of curable silicon-based hybrid resin. The preparation method comprises the following steps: selecting amino-terminated linear polysiloxane with a specific molecular weight, firstly introducing a reactive group by using diisocyanate, and then introducing a reaction product of diallyl isocyanurate and isocyanatopropyltriethoxysilane for toughening and introducing a photocurable double bond at the same time. Thus, the cured product has excellent adhesiveness, and has the advantages of high surface drying speed, high hardness, high mechanical property, high salt spray resistance and the like. The method can be widely applied to outdoor super-weather-proof, hydrophobic and oleophobic and easy-to-clean protection fields.

Description

technical field [0001] The invention relates to the field of silicon-based resins, and in particular relates to a preparation method of curable silicon-based hybrid resins. Background technique [0002] With the research on silicone, more and more products are designed. Chinese patent CN105008432B discloses a moisture-curing silicone adhesive composition comprising (A) reactive resin, (B) reactive polymer, (C) moisture-curing catalyst and (D) crosslinker resin. The reactive resin (A) contains R 3 SiO 1 / 2 Cell and SiO 4 / 2 The reaction product of a unit of an alkenyl-functional silicone resin and an alkoxysilane-functional organosiloxane compound having at least one silicon-bonded hydrogen atom reacts in the presence of a hydrosilylation catalyst. The reactive polymer (B) comprises an alkoxysilane-functional organosiloxane compound having at least one silicon-bonded hydrogen atom and a polyorganopolyorganic compound having an average of at least 2 aliphatically unsaturated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/388C09J183/08C09D183/08
CPCC08G77/388C09J183/08C09D183/08
Inventor 杨萍许涛
Owner 广东致格纳米科技有限公司
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