Flexible silicone elastomer and preparation method and application thereof

A silicone elastomer and flexible technology, applied in the field of flexible silicone elastomer and its preparation, can solve the problems of inability to meet the requirements of on-site displacement, material shedding, high density, etc., and achieve enhanced chemical stability, easy removal, and hardness small effect

Pending Publication Date: 2019-04-16
YANTAI JINRUN NUCLEAR POWER MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, ordinary silicone rubber products generally have high density and relatively high hardness due to the nature of the material itself. The general hardness is about Shao A40-80. Due to its hard characteristics, there will be problems such as material falling off and cracking, which cannot meet the displacement requirements of the site

Method used

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  • Flexible silicone elastomer and preparation method and application thereof
  • Flexible silicone elastomer and preparation method and application thereof
  • Flexible silicone elastomer and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A flexible silicone elastomer, comprising A component and B component with a volume ratio of 1:1, wherein,

[0043] The raw material ratio of component A is: branched vinyl silicone oil 20kg (purchased from Laiyang Dayi Chemical Industry); hydroxyl silicone oil 20kg (purchased from Laiyang Dayi Chemical Industry); modified phenyl silicone oil 5kg; silane coupling agent 5kg; platinum catalyst 5kg; modified iron powder 15kg; aluminum hydroxide 15kg; wollastonite 15kg.

[0044] The raw material ratio of component B is: ethylene branched chain silicone oil 20kg; hydroxyl silicone oil 20kg; hydrogen-containing silicone oil 10kg (purchased from Laiyang Dayi Chemical); radiation resistance agent 5kg; 15kg of gray stone.

[0045] A preparation method of a flexible silicone elastomer, comprising the following steps:

[0046] 1) Preparation of component A: Add the branched vinyl silicone oil and hydroxyl silicone oil in the raw materials of component A into the reaction kettle,...

Embodiment 2

[0050] A flexible silicone elastomer, comprising A component and B component with a volume ratio of 1:0.95, wherein,

[0051] Component A: branched vinyl silicone oil 25kg; hydroxyl silicone oil 22kg; modified phenyl silicone oil 4kg; silane coupling agent 8kg; tin catalyst 6kg; modified iron powder 10kg; sodium silicate 13kg; light calcium carbonate 12kg.

[0052] Component B: branched vinyl silicone oil 25kg; hydroxyl silicone oil 23kg; hydrogen-containing silicone oil 8kg; radiation resistance agent 4kg; modified iron powder 16kg; sodium silicate 11kg; light calcium carbonate 13kg.

[0053] A preparation method of a flexible silicone elastomer, comprising the following steps:

[0054] 1) Preparation of component A: add branched vinyl silicone oil and hydroxyl silicone oil in component A to the reaction kettle, mix for 15 minutes at 32°C and a vacuum of 0.03MPa, and then add modified phenyl to the above mixed solution Silicone oil, silane coupling agent, tin catalyst and li...

Embodiment 3

[0058] A flexible silicone elastomer, comprising A component and B component with a volume ratio of 1:1.05, wherein,

[0059] Component A: branched vinyl silicone oil 15kg; hydroxyl silicone oil 15kg; modified phenyl silicone oil 3kg; silane coupling agent 6kg; tin catalyst 4kg; modified iron powder 20kg; ammonium polyphosphate 20kg; silicon micropowder 17kg.

[0060] Component B: branched vinyl silicone oil 17kg; hydroxyl silicone oil 15kg; hydrogen-containing silicone oil 9kg; radiation resistance agent 3kg; modified iron powder 19kg; ammonium polyphosphate 18kg; silicon micropowder 19kg.

[0061] A preparation method of a flexible silicone elastomer, comprising the following steps:

[0062] 1) Preparation of component A: Add branched vinyl silicone oil and hydroxyl silicone oil in component A to the reaction kettle, mix for 20 minutes at 35°C and vacuum degree of 0.01MPa, and then add modified phenyl to the above mixed solution Silicone oil, silane coupling agent, tin cata...

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Abstract

The invention discloses a flexible silicone elastomer, which comprises a component A and component B in a volume ratio of 1:0.95-1.05, wherein the component A comprises the following raw materials: branched chain vinyl silicone oil, hydroxyl silicone oil, modified phenyl silicone oil, a silane coupling agent, a catalyst, modified metal powder, a flame retardant and a filler; the component B comprises the following raw materials: branched chain vinyl silicone oil, hydroxyl silicone oil, hydrogen-containing silicone oil, an irradiation-resistant agent, modified metal powder, a flame retardant and a filler. The elastomer can be applied as a fireproof flame-retardant plugging material in the field of nuclear power, has the advantages of small hardness, soft quality, considerable displacementstretching and no change in performance, can quickly react at a plugging position at room temperature to form a flexible elastomer sealing structure, and also has the functions of biological shieldingand neutron shielding.

Description

technical field [0001] The invention belongs to the field of nuclear power materials, and in particular relates to a flexible silicone elastomer and its preparation method and application. Background technique [0002] The purpose of a fire barrier in a nuclear power plant is to provide a passive boundary around a space that is capable of withstanding and containing an anticipated fire, and that prevents the fire from spreading to materials or items on the non-fire side of the fire barrier, or that does not allow these Direct or indirect damage to materials and items, and the performance of these functions is required to be completed without the action of any fire extinguishing system. Fireproof sealing is to use fireproof sealing materials to seal and fill empty openings, through holes, building gaps, etc., so that they can work together with corresponding components within the specified fire-resistant time to prevent the spread of heat, flames and smoke. technical measure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/06C08L83/04C08L83/05C08K13/06C08K3/08C08K3/32C08K3/22C08K3/34C08K3/36C08K3/26
CPCC08K2003/0856C08K2003/265C08K2003/323C08L83/04C08L83/06C08L2201/02C08L2201/08C08L2201/14C08L2205/025C08L2205/035C08K13/06C08K3/08C08K3/22C08K3/34C08K3/26C08K3/32C08K3/36
Inventor 门书卉战毅李立坤杜高燕黄艳涛伍峰于昌旭于为王新科许达
Owner YANTAI JINRUN NUCLEAR POWER MATERIAL CO LTD
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