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A high-adhesion and anti-graffiti silicone additive for synthetic leather and its preparation method

A technology of organic silicon additives and synthetic leather, applied in the direction of coating, etc., can solve problems such as poor adhesion

Active Publication Date: 2022-02-22
芯嵛半导体(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although ordinary fluorine-containing silicone materials have certain anti-fouling properties due to their relatively low surface tension, their adhesion is relatively poor

Method used

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  • A high-adhesion and anti-graffiti silicone additive for synthetic leather and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Base preparation:

[0034] Under the condition of 25°C, in the kneader, sequentially add methyl vinyl polysiloxane, the vinyl content is 0.01wt%, the viscosity is 300000mPa.s, 55.0 parts, methylphenyl silicone oil, the refractive index is 1.45, the viscosity is 30mPa .s, 3.0 parts, hydrophobic white carbon black, the specific surface area is 80m 2 / g, 40.0 parts, 5.0 parts of vinyl double-capped head, after fully stirring and kneading, heat up to 150°C and stir for 4 hours, then vacuumize and discharge.

[0035] Preparation of silicone additives:

[0036] Preparation of component A:

[0037] Under the condition of 25°C, weigh 20.0 parts of the base material, vinyl MQ resin, the vinyl content is 5.0wt%, the viscosity is 1000mPa.s, 5.0 parts, the hydrogen content in the end-side hydrogen-containing silicone oil is 1.0wt%, 5.0 part, 0.05 part of acetylenic alcohol inhibitor, adhesion promoter such as structural formula (1), wherein, m=3, n=2, 1.0 part, modified organosi...

Embodiment 2

[0043] Base preparation:

[0044] Under the condition of 25°C, in the kneader, sequentially add methyl vinyl polysiloxane, the vinyl content is 5wt%, the viscosity is 1000mPa.s, 85.0 parts, methylphenyl silicone oil, the refractive index is 1.52, and the viscosity is 30000mPa. s, 8.0 parts, hydrophobic white carbon black, the specific surface area is 300m 2 / g, 8.0 parts, 8.0 parts of hexamethyldisilazane, after fully stirring and kneading, raise the temperature to 150°C and stir for 4 hours, then vacuumize and discharge.

[0045] Preparation of silicone additives:

[0046] Preparation of component A:

[0047] Under the condition of 25°C, weigh 80.0 parts of base material, vinyl MDQ resin, vinyl content of 0.05wt%, viscosity 300000mPa.s, 10.0 parts, hydrogen-containing resin MQ, hydrogen content of 1.2wt%, 10.0 parts, 0.5 parts of polyvinyl polysiloxane, adhesion promoter such as structural formula (1), wherein, m=8, n=6, 8.0 parts, modified organosilicon fluorine-containin...

Embodiment 3

[0053] Base preparation:

[0054] Under the condition of 25°C, in the kneader, sequentially add methyl vinyl polysiloxane, the vinyl content is 0.8wt%, the viscosity is 200000mPa.s, 60.0 parts, methylphenyl silicone oil, the refractive index is 1.51, and the viscosity is ,10000mPa.s, 5.0 parts, hydrophobic silica, specific surface area is 200m 2 / g, 30.0 parts, 7.0 parts of tetramethyltetravinylcyclotetrasiloxane, after fully stirring and kneading, raise the temperature to 150°C and stir for 4 hours, then vacuumize and discharge.

[0055] Preparation of silicone additives:

[0056] Preparation of component A:

[0057] Under the condition of 25°C, weigh 50.0 parts of base material, vinyl MDT resin, vinyl content is 2.0wt%, viscosity is 40000mPa.s, 8 parts, hydrogen-containing resin, hydrogen content is 0.8wt%, 8.0 parts, 0.2 parts of maleate inhibitor, adhesion promoter such as structural formula (1), wherein, m=5, n=4, 5.0 parts, modified silicone fluorine-containing silico...

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Abstract

The invention provides a high-adhesion and anti-graffiti silicone additive for synthetic leather and a preparation method thereof. The additive is composed of component A and component B, and the components and proportion of component A are: 20.0-80.0 parts Base material, 5.0-10.0 parts of silicone resin, 5.0-10.0 parts of crosslinking agent, 0.05-0.5 parts of inhibitor, 1.0-8.0 parts of adhesion promoter, 3.0-10.0 parts of anti-graffiti additive, 5.0-20.0 parts of matting powder And 20.0-80.0 parts of solvent; Component B and its ratio are: 1.5-1.95 parts of methyl vinyl polysiloxane, 1.0-5.0 parts of anti-wear agent and 0.05-0.5 parts of modified platinum catalyst, component A Mix with component B according to the weight ratio of 100: (1~5) and then cure. base polysiloxane, 3.0-8.0 parts of methyl phenyl silicone oil, 5.0-8.0 parts of treatment agent and 8.0-40.0 parts of white carbon black.

Description

technical field [0001] The invention relates to the technical field of silicone adhesives, in particular to a high-adhesion and anti-graffiti silicone additive for synthetic leather and a preparation method thereof. Background technique [0002] PU synthetic leather is a kind of important polymer material, which is widely used. It plays a huge role in the fields of car seats, sofas, bags, shoes, etc. There are more and more synthetic leathers with different colors, styles, stripes and patterns. , with the improvement of people's aesthetic concept, there are more and more requirements for the vision, texture and touch of synthetic leather, and the requirements for higher adhesion and graffiti resistance are put forward. There are some deficiencies in graffiti and weather resistance, poor adhesion, and certain limitations in water resistance, oil resistance and graffiti resistance, which seriously affect the expansion of the application range of synthetic leather. As a new ty...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/07C09D183/04C09D7/61C09D7/65
CPCC09D183/04C09D7/61C09D7/65C08L2205/025C08L2205/035
Inventor 张丽娅陈维
Owner 芯嵛半导体(上海)有限公司