Glass fiber treating agent, glass fiber treating process thereof and heat-conducting silica gel cloth

Abstract

The invention discloses a glass fiber treating agent, a glass fiber treating process thereof and a heat-conducting silica gel cloth, and belongs to the technical field of silica gel materials. The glass fiber treating agent is prepared from following components in parts by weight: 8-12 parts of silicone rubber, 55-70 parts of a dispersing agent, 0.8-1.2 parts of a silane coupling agent, 0.5-0.9 part of high-hydrogen-content silicone oil and 0.5-0.9 part of a platinum catalyst. The invention also provides a glass fiber treating process and a heat-conducting silica gel cloth. The bonding adhesive force between glass fibers and silicone rubber is obviously improved, and the cohesiveness between glass fibers and a silicone rubber compound is enhanced.

Description

technical field

[0001] The invention relates to the technical field of silica gel materials, more specifically, it relates to a glass fiber treatment agent and its treatment process on glass fibers and a heat-conducting silica gel cloth. Background technique

[0002] Thermally conductive silicone cloth is a silicone polymer elastomer reinforced with glass fiber as the base material. Thermally conductive silicone cloth can effectively reduce the thermal resistance between electronic components and radiators, withstand high voltage and piercing by metal parts, and avoid short circuits. It is an excellent thermally conductive insulating material. The existing heat-conducting silicone cloth is mainly used in switching power supplies, communication equipment, computers, flat-screen TVs, mobile devices, video equipment, network products, household appliances, etc.

[0003] Nowadays, the battery power supply of electric vehicles usually adopts electric heating method. The electric...

Examples

Embodiment 1

[0052] Preparation of glass fiber treatment agent: It is prepared by mixing and stirring silicone rubber, dispersant, silane coupling agent, high hydrogen-containing silicone oil and platinum catalyst. The operation steps of its glass fiber treatment agent preparation are:

[0053] 1) Add 4kg of isomer grade xylene to 2kg of methyl vinyl silicone rubber, completely immerse the methyl vinyl silicone rubber in isomer grade xylene, soak for 30min, stir at a speed of 80r / min, and divide into two Add 8kg dimethylbenzene altogether once, continue to stir, make the solution viscosity be 1000mPa·s, obtain mixed solution A;

[0054] 2) Add 0.2kg of γ-methacryloxypropyltrimethoxysilane, 0.14kg of high hydrogen-containing silicone oil and 0.14kg of platinum catalyst to the mixture A, stir at a speed of 120r / min, and mix well to obtain a glass Fiber treatment agent.

[0055] The process of applying the glass fiber treatment agent to treat the glass fiber: the glass treatment agent prepa...

Embodiment 2-12 and comparative example 1-8

[0059] The glass fiber treatment agents of Examples 2-12 and Comparative Examples 1-8 are different from Example 1 in that the raw material consumption of the glass fiber treatment agent is different, as shown in Table 2 for details, and the rest are the same as Example 1.

[0060] Table 2 Raw material composition, dosage and tensile strength growth rate of preform A in Examples 1-12 and Comparative Examples 1-8

[0061]

[0062] By comparison of Examples 1-12 and Comparative Examples 1-8, draw the following conclusions:

[0063] In Examples 1-12, the growth rate of the tensile strength of the preform A has little change, and all have good tensile strength, which meets the requirements for the tensile strength of the PCB board production and application. Untreated glass fiber tensile strength in the present invention is 1000MPa, and breaking strength is 2000N / 25MM, and the tensile strength of the glass fiber that embodiment 1-12 prepares all has growth for original untreate...

Embodiment 6

[0066] In Example 6-8, different weights of γ-methacryloxypropyltrimethoxysilane were added to the silicone rubber. Compared with Example 1, the preform A prepared in Example 6-8 still complies with The demand for tensile strength is produced, but the growth rate of tensile strength has declined, and the content of γ-methacryloxypropyltrimethoxysilane in Example 6 and Example 7 is relatively less in Example 1, so that The combination of silicon rubber in the glass fiber and the treatment agent decreases slightly; the content of γ-methacryloxypropyl trimethoxysilane increases slightly in Example 8 relative to Example 1, so there will be redundant γ- Methacryloxypropyltrimethoxysilane, resulting in a slight increase in production costs.

[0067] In embodiment 9-12, compared with embodiment 1, embodiment 9-10 is to add the high hydrogen-containing silicone oil of different quality in certain silicone rubber, and embodiment 11-12 is to add the platinum of different quality in cert...

technical field

[0001] The invention relates to the technical field of silica gel materials, more specifically, it relates to a glass fiber treatment agent and its treatment process on glass fibers and a heat-conducting silica gel cloth. Background technique

[0002] Thermally conductive silicone cloth is a silicone polymer elastomer reinforced with glass fiber as the base material. Thermally conductive silicone cloth can effectively reduce the thermal resistance between electronic components and radiators, withstand high voltage and piercing by metal parts, and avoid short circuits. It is an excellent thermally conductive insulating material. The existing heat-conducting silicone cloth is mainly used in switching power supplies, communication equipment, computers, flat-screen TVs, mobile devices, video equipment, network products, household appliances, etc.

[0003] Nowadays, the battery power supply of electric vehicles usually adopts electric heating method. The electric...

Examples

Embodiment 1

[0052] Preparation of glass fiber treatment agent: It is prepared by mixing and stirring silicone rubber, dispersant, silane coupling agent, high hydrogen-containing silicone oil and platinum catalyst. The operation steps of its glass fiber treatment agent preparation are:

[0053] 1) Add 4kg of isomer grade xylene to 2kg of methyl vinyl silicone rubber, completely immerse the methyl vinyl silicone rubber in isomer grade xylene, soak for 30min, stir at a speed of 80r / min, and divide into two Add 8kg dimethylbenzene altogether once, continue to stir, make the solution viscosity be 1000mPa·s, obtain mixed solution A;

[0054] 2) Add 0.2kg of γ-methacryloxypropyltrimethoxysilane, 0.14kg of high hydrogen-containing silicone oil and 0.14kg of platinum catalyst to the mixture A, stir at a speed of 120r / min, and mix well to obtain a glass Fiber treatment agent.

[0055] The process of applying the glass fiber treatment agent to treat the glass fiber: the glass treatment agent prepa...

Embodiment 2-12 and comparative example 1-8

[0059] The glass fiber treatment agents of Examples 2-12 and Comparative Examples 1-8 are different from Example 1 in that the raw material consumption of the glass fiber treatment agent is different, as shown in Table 2 for details, and the rest are the same as Example 1.

[0060] Table 2 Raw material composition, dosage and tensile strength growth rate of preform A in Examples 1-12 and Comparative Examples 1-8

[0061]

[0062] By comparison of Examples 1-12 and Comparative Examples 1-8, draw the following conclusions:

[0063] In Examples 1-12, the growth rate of the tensile strength of the preform A has little change, and all have good tensile strength, which meets the requirements for the tensile strength of the PCB board production and application. Untreated glass fiber tensile strength in the present invention is 1000MPa, and breaking strength is 2000N / 25MM, and the tensile strength of the glass fiber that embodiment 1-12 prepares all has growth for original untreate...

Embodiment 6

[0066] In Example 6-8, different weights of γ-methacryloxypropyltrimethoxysilane were added to the silicone rubber. Compared with Example 1, the preform A prepared in Example 6-8 still complies with The demand for tensile strength is produced, but the growth rate of tensile strength has declined, and the content of γ-methacryloxypropyltrimethoxysilane in Example 6 and Example 7 is relatively less in Example 1, so that The combination of silicon rubber in the glass fiber and the treatment agent decreases slightly; the content of γ-methacryloxypropyl trimethoxysilane increases slightly in Example 8 relative to Example 1, so there will be redundant γ- Methacryloxypropyltrimethoxysilane, resulting in a slight increase in production costs.

[0067] In embodiment 9-12, compared with embodiment 1, embodiment 9-10 is to add the high hydrogen-containing silicone oil of different quality in certain silicone rubber, and embodiment 11-12 is to add the platinum of different quality in cert...

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