Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Silicone sealant with ultra-high strength and preparation method of silicone sealant

A silicone sealant, ultra-high-strength technology, used in adhesives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve the problems of limited application, high system viscosity, low mechanical properties, etc. The effect of improving low strength, improving mechanical strength, and large tensile bond strength

Active Publication Date: 2016-03-02
GUANGZHOU BAIYUN CHEM IND
View PDF3 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silicone glue has excellent comprehensive properties unmatched by other organic sealants, but its low mechanical properties limit its application in a wider range of fields
[0003] At present, the most effective way to improve the mechanical properties of silicone rubber is filler reinforcement, mainly including nano-calcium carbonate and fumed silica. Both nano-calcium carbonate and fumed silica have a spherical structure. The reinforcement principle is powder surface adsorption. That is, the larger the specific surface area of ​​the powder, the better the reinforcement, but if the specific surface area is too large, the viscosity of the system will be too high to be produced or used

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Silicone sealant with ultra-high strength and preparation method of silicone sealant
  • Silicone sealant with ultra-high strength and preparation method of silicone sealant
  • Silicone sealant with ultra-high strength and preparation method of silicone sealant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The ultra-high-strength silicone sealant of this embodiment is prepared from the following raw materials in parts by weight:

[0027]

[0028] The preparation method of the ultra-high strength silicone sealant of the present embodiment comprises the following steps:

[0029] (1) Reinforcement agent pre-dispersion: Add 20 parts of DMC (dimethylcyclosiloxane mixture) to 5 parts of carbon nanotubes (reinforcing agent) and mix, place in an ultrasonic disperser for ultrasonic dispersion for 30 minutes, Make reinforcing agent dispersion;

[0030] (2) Base material preparation: 100 parts of α,ω-dihydroxypolydimethylsiloxane with a viscosity of 20000Pa.s, 5 parts of methyl silicone oil (plasticizer) with a viscosity of 500Pa.s, Strong agent dispersion, 80 parts of active nano-calcium carbonate were stirred in a kneader for 3 hours, the temperature of the kneader was 150°C, vacuumized, and the discharge was cooled to obtain the base material;

[0031] (3) Add 3 parts of met...

Embodiment 2

[0033] The ultra-high-strength silicone sealant of this embodiment is prepared from the following raw materials in parts by weight:

[0034]

[0035] The preparation method of the ultra-high strength silicone sealant of the present embodiment comprises the following steps:

[0036] (1) Reinforcement agent pre-dispersion: Add 20 parts of DMC (dimethylcyclosiloxane mixture) to 5 parts of carbon nanotubes (reinforcing agent) and mix, place in an ultrasonic disperser for ultrasonic dispersion for 30 minutes, Make reinforcing agent dispersion;

[0037] (2) Base material preparation: 100 parts of α,ω-dihydroxy polydimethylsiloxane with a viscosity of 50000Pa.s, 5 parts of MDT methyl silicone oil with a viscosity of 500Pa.s, and a reinforcing agent dispersion 1. 60 parts of active nano-calcium carbonate were stirred in a kneader for 2 hours, the temperature of the kneader was 150° C., vacuumized, and the discharge was cooled to obtain the base material;

[0038] (3) Add 2 parts ...

Embodiment 3

[0040] The ultra-high-strength silicone sealant of this embodiment is prepared from the following raw materials in parts by weight:

[0041]

[0042] The preparation method of the ultra-high strength silicone sealant of the present embodiment comprises the following steps:

[0043] (1) Reinforcing agent pre-dispersion: Add 40 parts of DMC (dimethylcyclosiloxane mixture) to 10 parts of carbon nanotubes (reinforcing agent) and mix, place in an ultrasonic disperser for ultrasonic dispersion for 30 minutes, Make reinforcing agent dispersion;

[0044] (2) Base material preparation: 100 parts of α,ω-dihydroxypolydimethylsiloxane with a viscosity of 50000Pa.s, 5 parts of methyl silicone oil (plasticizer) with a viscosity of 500Pa.s, Strong agent dispersion, 60 parts of active nano-calcium carbonate were stirred in a kneader for 2 hours, the temperature of the kneader was 150°C, vacuumized, and the discharge was cooled to obtain the base material;

[0045] (3) Add 3 parts of meth...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a silicone sealant with ultra-high strength and a preparation method thereof. The silicone sealant is prepared from raw materials including alpha, omega-dihydroxyl polydimethylsiloxane, a plasticizer, a reinforcing agent, active nano-calcium carbonate, a cross-linking agent, a coupling agent, a catalyst and the like. The silicone sealant with the ultra-high strength is high in hardness and has very high tensile adhesive strength and zero bonding failure area under the conditions of the temperature of subzero 30 DEG C-90 DEG C, immersion in water, water-ultraviolet illumination and the like, and the technical situation of low strength of the conventional silicone sealant is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of silicone glue sealing and bonding, and in particular relates to an ultra-high-strength silicone sealant and a preparation method thereof. Background technique [0002] The full name of silicone sealant is condensation type room temperature vulcanizing silicone rubber (RTV). Excellent weather resistance, aging resistance and high and low temperature resistance performance, widely used in construction, automobile, electronic appliances and other fields. Silicone glue has excellent comprehensive properties unmatched by other organic sealants, but its low mechanical properties limit its application in a wider range of fields. [0003] At present, the most effective way to improve the mechanical properties of silicone rubber is filler reinforcement. There are mainly nano-calcium carbonate and fumed silica. Both nano-calcium carbonate and fumed silica have a spherical structure. The reinforcement principle is ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/06C09J11/04C09J11/08C09J11/06
CPCC08K2201/011C08L2205/02C09J11/04C09J11/06C09J11/08C09J183/06C08L83/04C08K13/04C08K7/24C08K2003/265C08K5/5435C08K7/10
Inventor 曾武蒋金博刘正伟江锋
Owner GUANGZHOU BAIYUN CHEM IND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com