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A two-component silicone sealant for floodlights

A silicone sealant, two-component technology, used in adhesives, non-polymer adhesive additives, adhesive types, etc., can solve the problem of increasing production and operation costs, high bonding reaction temperature, poor storage stability, etc. problems, to achieve the effect of improving density, enhancing air tightness, and uniformity of curing

Active Publication Date: 2021-09-03
宁波聚力新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One-component room temperature vulcanized silicone rubber is easy to use, vulcanized by contact with moisture, and does not require other special equipment, but its deep curing is slow, especially in winter, and the slow curing speed restricts its high-efficiency and large-scale bonding applications; single-component Addition-type high-temperature vulcanized silicone rubber has poor storage stability and needs to be stored at low temperature (0°C-10°C), and the bonding reaction temperature is high, generally at 120-150°C for 1-2 hours, which requires additional heating Equipment increases the cost of production and operation, and long-term high-temperature baking also has a great impact on the service life of bonding and sealing substrates and electronic components

Method used

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  • A two-component silicone sealant for floodlights
  • A two-component silicone sealant for floodlights
  • A two-component silicone sealant for floodlights

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A flushing light is two-component silicone sealing gum, including a separate package of A component and B component, and the weight ratio of the A component and the B component is 5: 1. In the preparation, the preparation of the A component and the B component is included.

[0027] The preparation of the A component is: 100 parts of the heterodoxy polyimethylsiloxane, 2 parts of the tetramethylene sealing end polyimethylsiloxane, 80 parts of the filler, composite flame retardant 10 copies. Thereafter, the aforementioned components are in an environment of inert gas, the maximum temperature does not exceed 0 °, and the mixing is uniform, and the last inert gas protection, and the independent sealing package is loaded in the room temperature state. At the time of concrete preparation, the alarmability of the product time when the product is used is found.

[0028] The preparation of the B component is: 30 parts of the trimethyl group, 3 parts of the trimethyl group, 3 parts o...

Embodiment 2

[0039] And the difference between Example 1 is only:

[0040] The weight ratio of the A component and the B component is 8: 1.

[0041] In the preparation of the A component, 100 parts of the tetramethylene siloxane, 5 parts of the tetramethylene seal end polyimethylsiloxane, 10 parts of the tetramethylene chromatoxane, 10 parts of the trimethyl, and 120 composite flame retardants. 30 copies.

[0042] In the preparation of the B component, 40 parts of the trimethyl group, 5 parts of the trimethyl, 5 parts of titanium powder, 40 parts of the filler, 10 parts of the silane interchange agent, silane coupling agent 10 copies of composite coordinated condensation catalysts.

[0043]The terminal hydroxy polyimethylsiloxane is mutually collided by two endoxy polyimethylsiloxane I and end hydroxyl polymethylsiloxane II having different viscosity. The viscosity range of the terminal hydroxyl polymethylsiloxane I is 5000 mPas, and the viscosity range of terminal hydroxyl polymethylsiloxane ...

Embodiment 3

[0052] And the difference between Example 1 is only:

[0053] The weight ratio of the A component and the B component is 10: 1.

[0054] In the preparation of the A component, 100 parts of the heterodoxy polymethylsiloxane, 10 parts of the tetramethylene seal end polyimethylsiloxane, 10 parts of the tetramethylene seal end polyimethylsiloxane, 150 parts of the filler, composite flame retardant 40 copies.

[0055] In the preparation of the B component, 50 parts of the trimethyl group, 10 parts by weight, 10 parts of carbon black, 20 parts of the silane interchange agent, and silane diploma. 20 copies of composite coordinated condensation catalysts.

[0056] The terminal hydroxy polyimethylsiloxane is mutually collided by two endoxy polyimethylsiloxane I and end hydroxyl polymethylsiloxane II having different viscosity. The viscosity range of the terminal hydroxy polyimethylsiloxane I is 10,000 mPas, the viscosity range of the terminal hydroxyl polymethylsiloxane II ranges from 5000...

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Abstract

The invention discloses a two-component silicone sealant for floodlights, which comprises independently packaged component A and component B, and the weight ratio of component A to component B is (5-10):1 and, in parts by weight, component A includes: 100 parts of hydroxyl-terminated polydimethylsiloxane, 2-10 parts of trimethyl-terminated polydimethylsiloxane, 80-150 parts of reinforcing filler, 10-40 parts of composite flame retardant; in parts by weight, component B includes: 30-50 parts of trimethyl-terminated polydimethylsiloxane, 3-10 parts of carbon black or titanium dioxide, and 10 parts of reinforcing filler -50 parts, 5-20 parts of silane crosslinking agent, 5-20 parts of silane coupling agent, 0.01-3 parts of composite synergistic condensation catalyst. The invention has the advantages of relatively uniform deep-layer curing speed and better bonding quality.

Description

Technical field [0001] The present invention relates to the field of bonding sealing technologies, and in particular, to a flushing of two-component silicone sealing gum. Background technique [0002] Silicone materials have more excellent weather resistance, high-temperature, low-temperature, low-temperature resistance, etc., with coupling agents, silicone tackifiers, and surface treatment, can be widely used in various weak applications. Polar material bonding fixation. At present, silicone materials as bonded seals are primarily a single component condensation room temperature vulcanized silicone rubber and a single component additional high temperature vulcanized silicone rubber. Single-compartment temperature sulfurized silicone rubber is simple, contact moisture vulcanization, no other special equipment, but its deep curing is slow, especially in winter, slow curing speed constrains its high efficiency, large-scale bonding application; single group Differential high-tempera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/04C09J197/02C09J11/04C09J11/06C09J11/08
CPCC08K2003/265C08K2201/014C08L2205/025C08L2205/035C08L2205/16C09J11/04C09J11/06C09J11/08C09J183/04C08L83/04C08L97/02C08K13/02C08K3/26C08K3/36
Inventor 刘锐
Owner 宁波聚力新材料科技有限公司
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