Composite modifier capable of improving activation degree of heavy calcium carbonate for silicone adhesive and use method of composite modifier

A technology of heavy calcium carbonate and composite modifier, applied in the directions of non-polymer adhesive additives, adhesives, adhesive additives, etc., can solve the problems of complex components, poor compatibility, poor modification effect, etc.

Pending Publication Date: 2021-06-08
广西碳酸钙产业化工程院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the inorganic characteristics of calcium carbonate powder, its compatibility with silicone oil is poor, and it needs to be modified. However, the existing composite surface modifiers have problems such as complex components and high preparation costs. Problems such as single effect and poor modification effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A compound modifier capable of improving the activation degree of heavy calcium carbonate for silicone rubber, including silane coupling agent, titanate coupling agent, aluminate coupling agent, stearic acid, POSS-phosphorylated vegetable oil polymerization matter, the addition of the silane coupling agent is 0.7% of the powder mass, the addition of the titanate coupling agent is 0.5% of the powder mass, the addition of the aluminate coupling agent The amount is 0.3% of the mass of the powder, the addition of the stearic acid is 0.5% of the mass of the powder, and the addition of the POSS-phosphorylated vegetable oil polymer is 0.3% of the mass of the powder.

[0029] The preparation method of described POSS-phosphorylated vegetable oil polymer comprises the following steps:

[0030] S1: Add diethanolamine and sodium acetate borohydride to vegetable oil, heat up to 130°C, react continuously for 3 hours, then cool down to 45°C to obtain material A; the amount of diethano...

Embodiment 2

[0037] A compound modifier capable of improving the activation degree of heavy calcium carbonate for silicone rubber, including silane coupling agent, titanate coupling agent, aluminate coupling agent, stearic acid, POSS-phosphorylated vegetable oil polymerization matter, the addition of the silane coupling agent is 0.9% of the powder mass, the addition of the titanate coupling agent is 0.4% of the powder mass, the addition of the aluminate coupling agent The amount is 0.4% of the mass of the powder, the addition of the stearic acid is 0.6% of the mass of the powder, and the addition of the POSS-phosphorylated vegetable oil polymer is 0.1% of the mass of the powder.

[0038] The preparation method of described POSS-phosphorylated vegetable oil polymer comprises the following steps:

[0039] S1: Add diethanolamine and sodium acetate borohydride to vegetable oil, heat up to 120°C, react continuously for 4 hours, then cool down to 40°C to obtain material A; the amount of diethano...

Embodiment 3

[0046] A compound modifier capable of improving the activation degree of heavy calcium carbonate for silicone rubber, including silane coupling agent, titanate coupling agent, aluminate coupling agent, stearic acid, POSS-phosphorylated vegetable oil polymerization The addition of the silane coupling agent is 0.8% of the powder mass, the addition of the titanate coupling agent is 0.2% of the powder mass, and the addition of the stearic acid is 0.7% of the mass of the powder, the addition of the aluminate coupling agent is 0.5% of the mass of the powder, and the addition of the POSS-phosphorylated vegetable oil polymer is 0.5% of the mass of the powder.

[0047] The preparation method of described POSS-phosphorylated vegetable oil polymer comprises the following steps:

[0048] S1: Add diethanolamine and sodium acetate borohydride to vegetable oil, heat up to 110°C, react continuously for 5 hours, then cool down to 50°C to obtain material A; the amount of diethanolamine added is...

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PUM

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Abstract

The invention discloses a composite modifier capable of improving the activation degree of heavy calcium carbonate for a silicone adhesive. The composite modifier comprises a silane coupling agent, a titanate coupling agent, an aluminate coupling agent, stearic acid and a POSS-phosphorylated vegetable oil polymer. The invention also discloses a use method of the composite modifier capable of improving the activation degree of the heavy calcium carbonate for the silicone adhesive according to the claims, and the use method comprises the following steps: adding the POSS-phosphorylated vegetable oil polymer into powder, performing reacting for 1-5 minutes, then adding the silane coupling agent, the titanate coupling agent and the aluminate coupling agent, performing reacting for 3-5 minutes, then adding the stearic acid, and continuously performing reacting for 1-10 minutes. After the composite modifier is used for modifying the heavy calcium carbonate for the silicone adhesive, the heavy calcium carbonate has good dispersity, extremely high activation degree, higher whiteness and extremely low oil absorption value, and the thixotropy and tensile strength of the silicone adhesive can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of preparation of calcium carbonate modifiers, and in particular relates to a composite modifier capable of improving the activation degree of heavy calcium carbonate for silicone rubber and a use method thereof. Background technique [0002] Calcium carbonate is an inorganic powder with many hydroxyl groups on the surface, which is easy to absorb water and exhibits hydrophilic and oleophobic properties. It is difficult to disperse evenly in organic media, so it cannot cross-link with polymer materials such as rubber and plastic. Poorly dispersed calcium carbonate not only seriously affects the appearance of the product, but the large aggregates are also easy to form internal defects in the material, which cannot achieve the ideal reinforcement effect on polymer materials. In order to solve the above problems, it is necessary to modify the surface of the calcium carbonate powder. The surface properties of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/04C09J11/04
CPCC08K2003/265C09J11/04C09J183/04C08K9/10C08K3/26
Inventor 童张法李奇洪覃玲意钟玲萍黄华彬叶有贝进国谢云莫及刘振荣其他发明人请求不公开姓名
Owner 广西碳酸钙产业化工程院有限公司
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