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Polysiloxane composition and application thereof

A technology of polysiloxane and hydrogen polysiloxane, applied in the field of polysiloxane composition

Inactive Publication Date: 2021-06-01
上海浩创亘永科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this special structure of carborane is a kind of solid that is easy to sublimate. If you want to introduce it into the structure of the polymer at the molecular level, you need to modify the structure of the carborane to realize the functionalization of the carborane. , so that the comprehensive properties such as flame retardancy and high temperature resistance of polymer materials can be greatly improved, which has become a key technical challenge for modified polymer materials

Method used

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  • Polysiloxane composition and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0040] The preparation method of vinyl polysiloxane:

[0041] Formula I-1 It can be synthesized by the following steps:

[0042] (1) Take 0.5g of platinum as a hydrosilylation catalyst, add 5mL of toluene to dilute, and then add it to a 250mL three-necked flask;

[0043] (2) Take 2.49g 1,3,5-triallyl-1,3,5-triazine-2,4,6(1H,3H,5H)-triketone (1,3,5-Triallyl-1 ,3,5-triazine-2,4,6(1H,3H,5H)-trione, molecular weight MW=249.27g / mol), add 20mL of toluene to dilute and add to the three-necked flask;

[0044] (3) Take 28.56g compound containing silicon-hydrogen bond Add 25mL of toluene to dilute and add to the three-necked flask;

[0045] (4) Set the oil bath temperature to 130°C, turn on the stirring, turn on the condensed water, and when the temperature in the three-necked flask is 119°C, the reaction mixture begins to reflux;

[0046] (5) After refluxing for a period of time, draw a small amount of the reaction mixture for IR testing to determine whether the reaction is comp...

Embodiment 1

[0064] The polysiloxane composition of the present embodiment consists of the following:

[0065] 45 parts vinyl polysiloxane;

[0066] 5 parts gas silicon 1, 5 parts gas silicon 2;

[0067] 10 parts of double-ended hydrogen-containing polysiloxane, 5 parts of side-chain hydrogen-containing silicone oil;

[0068] 10 parts of methylphenyl polysiloxane;

[0069] 3 parts talcum powder;

[0070] 0.5 parts platinum catalyst;

[0071] 1 Inhibitor;

[0072] 0.6 parts curing accelerator.

[0073] Wherein, the preparation technology of above-mentioned composition is as follows:

[0074] (1) In parts by weight, first weigh vinyl polysiloxane, hydrogen-containing silane polymer 1, methylphenyl polysiloxane, and acetylenic alcohol inhibitors into the reactor, and vacuumize to maintain a pressure difference ≥ 0.08MPa, at a temperature of 50°C, stir continuously for 15 minutes;

[0075] (2) Add hydrogen-containing silane polymer 2 on the basis of (1), add in batches, mix for 5 minut...

Embodiment 2

[0080] The polysiloxane composition of the present embodiment consists of the following:

[0081] 50 parts vinyl polysiloxane;

[0082] 10 parts gas silicon 1, 5 parts gas silicon 2;

[0083] 10 parts of double-ended hydrogen-containing polysiloxane, 10 parts of side-chain hydrogen-containing silicone oil;

[0084] 20 parts of methylphenyl polysiloxane;

[0085] 3 parts talcum powder;

[0086] 0.5 parts platinum catalyst;

[0087] 1 Inhibitor;

[0088] 0.6 parts curing accelerator.

[0089] Wherein, the preparation technology of above-mentioned composition is as follows:

[0090] (1) In parts by weight, first weigh vinyl polysiloxane, hydrogen-containing silane polymer 1, methylphenyl polysiloxane, and acetylenic alcohol inhibitors into the reactor, and vacuumize to maintain a pressure difference ≥ 0.08MPa, at a temperature of 50°C, stir continuously for 15 minutes;

[0091] (2) Add hydrogen-containing silane polymer 2 on the basis of (1), add in batches, mix for 5 min...

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Abstract

The invention provides a polysiloxane composition for an electronic device. The polysiloxane composition for the electronic device has the advantages of favorable flame retardancy, lower dielectric constant, favorable heat-resistant stability, excellent self-cleaning property, excellent mechanical properties, simple preparation process and wide application prospects.

Description

technical field [0001] The invention relates to a polysiloxane composition, which can be used in the fields of electronic equipment and electronic devices. Background technique [0002] The body of electrical and electronic equipment generally needs to work with electricity. The materials used not only need to have good insulation or low dielectric constant to ensure the normal operation of the work, but also need to have good flame retardancy and heat resistance to deal with Performance degradation caused by unexpected situations during live work and accelerated aging due to harsh climates that may be faced. [0003] A series of polymer materials such as polyurethane, polyimide, polyamide, polyurea, epoxy resin, and polysiloxane are the most common materials on the market, among which silicone rubber is based on the -Si-O- bond , A type of elastomer with organic groups as side groups, which has a special semi-organic and semi-inorganic structure, and is excellent in high a...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/05C08K13/04C08K7/26C08K3/34
CPCC08K2201/014C08L83/04C08L2201/02C08L2201/08C08L2203/20C08L2205/025C08L2205/035C08K13/04C08K7/26C08K3/34
Inventor 杨心怀周洁高文中
Owner 上海浩创亘永科技有限公司
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