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A kind of sealant for internal sensor of refrigerator and preparation method thereof

An internal sensor and sealant technology, applied in the field of sensors, can solve problems such as poor sealing effect, and achieve the effects of good moisture resistance, easy forming, and stable molecular structure

Active Publication Date: 2016-08-17
MINGGUANG XUSHENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the sealing effect of the sealant itself is not good, even the best sealing process will not help the sealing performance of the sensor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A sealant for refrigerator internal sensors, comprising the following raw materials in parts by weight: 110 parts of polymethylvinyl siloxane, 35 parts of silicone resin, 7 parts of carbon black, 8 parts of toluene diisocyanate, hydrogen-containing silicone oil plasticizer 8 parts, catalyst 5 parts, vulcanizing agent 5 parts, crosslinking agent 5 parts, curing agent 5 parts.

[0017] The preparation method of the sealant for the internal sensor of the refrigerator comprises the following steps:

[0018] (1) Add the polymethylvinylsiloxane and toluene diisocyanate into the reaction kettle according to the parts by weight, stir and heat to 75° C., and keep the temperature for 2.5 hours to obtain the A solution;

[0019] (2) Mix and stir the silicone resin, carbon black, hydrogen-containing silicone oil plasticizer, catalyst, vulcanizing agent, crosslinking agent and curing agent evenly, heat up to 60° C., and heat for 2.5 hours , to obtain B solution;

[0020] (3) Mix t...

Embodiment 2

[0022] A sealant for a refrigerator internal sensor, comprising the following raw materials in parts by weight: 90 parts of polymethylvinyl siloxane, 20 parts of silicone resin, 3 parts of carbon black, 4 parts of toluene diisocyanate, hydrogen-containing silicone oil plasticizer 3 parts, 1 part catalyst, 3 parts vulcanizing agent, 1 part crosslinking agent, 1 part curing agent.

[0023] The preparation method of the sealant for the internal sensor of the refrigerator comprises the following steps:

[0024] (1) Add the polymethylvinylsiloxane and toluene diisocyanate into the reaction kettle according to the parts by weight, stir and heat to 70°C, and keep the temperature for 2 hours to obtain the A solution;

[0025] (2) Mix and stir the silicone resin, carbon black, hydrogen-containing silicone oil plasticizer, catalyst, vulcanizing agent, crosslinking agent and curing agent uniformly, heat up to 50° C., and heat for 2 hours , to obtain B solution;

[0026] (3) Mix the A s...

Embodiment 3

[0028] A sealant for refrigerator internal sensors, comprising the following raw materials in parts by weight: 98 parts of polymethylvinyl siloxane, 24 parts of silicone resin, 5.5 parts of carbon black, 6 parts of toluene diisocyanate, hydrogen-containing silicone oil plasticizer 4 parts, catalyst 2 parts, vulcanizing agent 4 parts, crosslinking agent 2 parts, curing agent 3 parts.

[0029] The preparation method of the sealant for the internal sensor of the refrigerator comprises the following steps:

[0030] (1) Add the polymethylvinylsiloxane and toluene diisocyanate into the reaction kettle according to the parts by weight, stir and heat to 73°C, and keep the temperature for 2.2 hours to obtain the A solution;

[0031] (2) Mix and stir the silicone resin, carbon black, hydrogen-containing silicone oil plasticizer, catalyst, vulcanizing agent, crosslinking agent and curing agent evenly, heat up to 55° C., and heat for 2.2 hours , to obtain B solution;

[0032] (3) Mix th...

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PUM

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Abstract

The invention relates to the technical field of sensors and discloses a sealant for a sensor inside a refrigerator and a preparation method of the sealant. The sealant for the sensor inside the refrigerator comprises the following raw materials in parts by weight: 90-110 parts of polymethylvinylsiloxane, 20-35 parts of organic silicon resin, 3-7 parts of carbon black, 4-8 parts of toluene diisocyanate, 3-8 parts of hydrogen-containing silicone oil plasticizer, 1-5 parts of catalyst, 3-5 parts of vulcanizing agent, 1-5 parts of crosslinking agent and 1-5 parts of curing agent. The sealant for the sensor can be well adhered to a shell and is good in humidity resistance and elasticity, easy to form, stable in molecular structure, aging-resistant, environment-friendly and nontoxic.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a sealant for sensors inside a refrigerator and a preparation method thereof. Background technique [0002] Sealing is the key construction process in the sensor manufacturing process, and the quality of the sealing effect directly affects the performance index and long-term stability of the sensor. Especially in today's increasingly fierce market competition, product quality is the life of an enterprise, and sensors are no exception. Doing a good job of sealing the sensor is one of the important links to improve the quality of the sensor. Different sealing materials in the sensor manufacturing process have different sealing effects on the sensor, and have different degrees of influence on the performance indicators of the sensor. If an unreasonable sealing process is used for the protective sealing of the sensor, the sealing performance of the sealant is likely to fail, and it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/07C09J183/04C09J11/04C09K3/10
Inventor 栾信清
Owner MINGGUANG XUSHENG TECH