Double component additive sealing organic silicon material for electric kettle and preparation method thereof

An electric kettle, two-component technology, applied in the directions of adhesive additives, non-polymer adhesive additives, adhesives, etc., can solve the problems of long curing time, low production efficiency, difficulty in meeting export, etc., and achieve good anti-aging performance. , Fast bonding and curing, the effect of improving production efficiency

Active Publication Date: 2019-03-19
广东皓明有机硅材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bottom heating plate and the pot body are generally bonded with one-component silicone glue, or sealed by high-temperature electric welding, but these two bonding and sealing technology solutions have major disadvantages
[0003] One-component silicone adhesive reacts with moisture in the air to complete the curing and bonding process. The curing speed is very slow. Generally, it needs to be placed for 2-3 days at room temperature. This will cause a large number of electric kettles in the production line to be unable to test and ship in time. Need to arrange a lot of space in the factory for placing electric kettles, resulting in reduced production efficiency
In addition, one-component silicone rubber usually contains organotin catalysts and small molecules that are not fully released, which leads to the substandard food grade of electric kettles, especially difficult to meet the requirements of exporting to European and American countries
The high-temperature electric welding process is generally used for electric kettles made of metal materials. This process has high production efficiency, but the process temperature is as high as 700-800°C, which not only consumes high energy and costs, but also has certain safety hazards.
[0004] Chinese patent application CN 104046316 A discloses a sealant for heating kettles, which is composed of fumed silica, graphene, ethynyl cyclohexanol, isocyanate, chloroplatinic acid catalyst, terpene resin, quartz powder, and diaryl secondary amine , epoxy silicone resin and other 16 kinds of raw materials, the preparation of raw materials is complicated, it belongs to one-component silicone glue, and the curing process is easy to produce small molecular by-products, which leads to the unsatisfactory food grade of the kettle
[0005] The existing sealing silicone materials for heating kettles have the problems of long curing time, unsatisfactory safety and food grade

Method used

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  • Double component additive sealing organic silicon material for electric kettle and preparation method thereof
  • Double component additive sealing organic silicon material for electric kettle and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: Two-component addition molding sealing silicone material for electric kettle

[0031] The two-component addition molding sealing silicone material for electric kettle includes equal mass of component A and component B; component A includes raw materials of the following mass parts: 85 parts of vinyl polysiloxane, 16 parts of white carbon black, The binder is 3 parts and the catalyst is 0.3 parts; the B component includes the following parts by mass of raw materials: 85 parts of vinyl polysiloxane, 16 parts of white carbon black, 9 parts of hydrogen-containing silicone oil, and 0.08 parts of inhibitor.

[0032] The structural formula of the adhesive is: R 1 [(CH 3 ) 2 SiO 2 / 2 ] m [CH 3 R 2 SiO 2 / 2 ] n (CH 3 ) 2 SiR 1 ; Where R 1 Is epoxy group, R 2 Is hydrogen, m+n=17; vinyl polysiloxane is a vinyl-terminated silicone oil with a viscosity of 20000 mPa.s and a vinyl mass percentage of 0.08%; the white carbon black is a hydrophilic fumed white carbon black, The avera...

Embodiment 2

[0037] Example 2 Two-component addition molding sealing silicone material for electric kettle

[0038] The two-component addition molding sealing silicone material for electric kettle includes equal mass of component A and component B; component A includes the following raw materials by mass: 70 parts of vinyl polysiloxane, 8 parts of white carbon black, The binder is 2 parts and the catalyst is 0.2 parts; the B component includes the following materials in parts by mass: 70 parts of vinyl polysiloxane, 8 parts of white carbon black, 4 parts of hydrogen-containing silicone oil, and 0.05 parts of inhibitor.

[0039] The structural formula of the adhesive is: R 1 [(CH 3 ) 2 SiO 2 / 2 ] m [CH 3 R 2 SiO 2 / 2 ] n (CH 3 ) 2 SiR 1 ; Where R 1 Is methoxy, R 2 Is vinyl, m+n=18; vinyl polysiloxane is pendant vinyl silicone oil, its viscosity is 5000mPa.s, and the vinyl mass percentage is 1.2%; the white carbon black is precipitation method white carbon black. The average particle size is 6 μm; ...

Embodiment 3

[0041] Example 3 Two-component addition molding sealing silicone material for electric kettle

[0042] The two-component addition molding sealing silicone material for electric kettle includes equal mass of component A and component B; component A includes raw materials of the following mass parts: 100 parts of vinyl polysiloxane, 25 parts of white carbon black, 4 parts of adhesive and 0.4 parts of catalyst; the B component includes the following materials in parts by mass: 100 parts of vinyl polysiloxane, 25 parts of white carbon black, 16 parts of hydrogen-containing silicone oil, and 0.12 parts of inhibitor.

[0043] The structural formula of the adhesive is: R 1 [(CH 3 ) 2 SiO 2 / 2 ] m [CH 3 R 2 SiO 2 / 2 ] n (CH 3 ) 2 SiR 1 ; Where R 1 Is an acyloxy group, R 2 Selected from vinyl, m+n=16; vinyl polysiloxane is a vinyl terminated oligosiloxane with a viscosity of 10000 mPa.s and a vinyl mass percentage of 0.1%; silica is hydrophobic Fumed white carbon black with an average specifi...

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Abstract

The invention provides a double component additive sealing organic silicon material for an electric kettle. The material is prepared from components A and B equal in mass. The component A is preparedfrom the following raw materials in parts by mass: 70-100 parts of vinyl polysiloxane, 5-30 parts of white carbon black, 0.5-5 parts of an adhesive and 0.1-0.5 part of a catalyst. The component B is prepared from the following raw materials in parts by mass: 70-100 parts of vinyl polysiloxane, 5-30 parts of white carbon black, 2-20 parts of hydrogen-containing silicone oil and 0.001-0.2 part of aninhibitor. The invention belongs to the technical field of organic silicon materials. The double component additive sealing organic silicon material can be used for quickly adhering and curing the electric kettle, is low in curing temperature and short in time, simple in preparation raw materials, low in cost, safe and reliable and high in food grade, and can meet the demands on high-end standards such as FDA.

Description

Technical field [0001] The invention belongs to the technical field of organic silicon materials, and particularly relates to a two-component addition molding sealing organic silicon material for an electric kettle and a preparation method thereof. Background technique [0002] The electric kettle is one of the small household appliances widely used in daily life. It mainly consists of a bottom heating plate, a kettle body and other accessories. The bottom heating plate and the kettle body are generally bonded by one-component silicone glue or sealed by high-temperature electric welding, but these two bonding and sealing technical solutions have major drawbacks. [0003] The one-component silicone adhesive reacts with moisture in the air to complete the curing and bonding process. The curing speed is very slow. Generally, it needs to be placed for 2-3 days at room temperature. This will cause a large number of electric kettles on the production line to be unable to test and ship in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/07C09J183/05C09J11/04
CPCC08L2203/206C08L2205/025C08L2205/03C09J11/04C09J183/04C08L83/04C08K3/36
Inventor 程宪涛王佐吴向荣莫飞吴加文
Owner 广东皓明有机硅材料有限公司
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