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

Single-component room-temperature fast sulfidization dealcoholization type sealing rubber with silicone structure and preparing method thereof

A rapid vulcanization and dealcoholization technology, which is applied in chemical instruments and methods, adhesives, and other chemical processes, can solve problems such as poor adhesion of curtain wall aluminum materials, increased molar mass of polymers, and difficult dispersion of fillers. Achieve the effects of improving storage stability, improving cohesiveness, and fast vulcanization speed

Active Publication Date: 2007-08-08
CHENGDU GUIBAO SCI & TECH
View PDF3 Cites 38 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The silicone structural sealants described in these documents have the following disadvantages in production and application: ① α, ω-dihydroxy polydimethylsiloxane is prone to condensation reaction with the catalyst, which quickly increases the molar mass of the polymer and increases the viscosity , which requires special equipment when making glue
② α, ω-dihydroxy polydimethylsiloxane is easy to form hydrogen bonds with the hydroxyl groups on the surface of inorganic fillers, making it difficult for the fillers to disperse, resulting in the phenomenon of "structuring" of the mixed rubber and deteriorating the processing performance
③ α, ω-dihydroxypolydimethylsiloxane and crosslinking agent react incompletely when mixed, seriously affecting stability
At the same time, curtain wall materials are changing with each passing day, and the structural sealant of the above formula has poor adhesion to new curtain wall glass and curtain wall aluminum materials.
[0005] In order to improve, US 4 687829 published on August 18, 1978 adopted a terminal alkoxy silicon ethylene catalyst in order to improve storage stability and cohesiveness, but it was still unsatisfactory

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1: 40 parts of polydimethylsiloxane terminal trimethylsiloxane with a viscosity of 10 Pa·S at 25°C and a terminal methyldimethoxysiloxane with a viscosity of 5 Pa·S at 25°C 60 parts, pre-dried stearic acid treatment nano active calcium carbonate 75 parts, 5 parts of methyltrimethoxysilane, the specific surface area of ​​silazane treatment is 150m 2 9 parts / g fumed white carbon black, 5 parts of γ-aminopropyl triethoxysilane, 7 parts of ethyl acetoacetate chelate of isopropyl titanate, and poly(2) diacetate with a viscosity of 1 Pa·S at 25°C Add 1 part of methyl siloxane into a high-speed disperser, and carry out a chemical reaction for 80 minutes at a vacuum of 0.06-0.095MPa and a speed of 350rpm to manufacture a room temperature rapid vulcanization dealcoholization silicone structural sealant. For the product performance test results, see Table 1 shows.

Embodiment 2

[0037] Example 2: 20 parts of polydimethylsiloxane terminal trimethylsiloxane with a viscosity of 30 Pa·S at 25°C and a terminal methyldimethoxysiloxane with a viscosity of 5 Pa·S at 25°C 80 parts, 60 parts of pre-dried rosin acid-treated nano-active calcium carbonate, 20 parts of methyltrimethoxysilane, and the specific surface area of ​​silazane treatment is 200m 2 10 parts / g fumed white carbon black, 0.5 parts of γ(2,3-glycidoxy)propyltrimethoxysilane, 0.1 parts of ethyl acetoacetate chelate of isopropyl titanate, viscosity at 25°C 3 parts of polydimethylsiloxane of 1Pa·S, the chemical reaction was carried out for 80 minutes at a vacuum degree of 0.06-0.095MPa and a rotation speed of 350rpm to manufacture room temperature rapid vulcanization dealcoholization silicone structural sealant, product performance test results See Table 1 for details.

Embodiment 3

[0038] Example 3: 10 parts of polydimethylsiloxane terminal trimethylsiloxane with a viscosity of 50 Pa·S at 25°C and a terminal methyldimethoxysiloxane with a viscosity of 10 Pa·S at 25°C 90 parts, pre-dried stearic acid treatment nano active calcium carbonate 80 parts, vinyl trimethoxysilane 10 parts, the specific surface area of ​​silazane treatment is 200m 2 / g 5 parts of fumed silica, 1 part of γ(2,3-glycidoxy)propyltrimethoxysilane, 5 parts of ethyl acetoacetate chelate of isopropyl titanate, viscosity at 25°C 10 parts of polydimethylsiloxane of 1Pa·S, the chemical reaction was carried out for 80 minutes at a vacuum degree of 0.06-0.095MPa and a rotation speed of 350rpm to manufacture room temperature rapid vulcanization dealcoholization silicone structural sealant, product performance test results See Table 1 for details.

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

PropertyMeasurementUnit
Viscosityaaaaaaaaaa
Viscosityaaaaaaaaaa
Viscosityaaaaaaaaaa
Login to View More

Abstract

The invention discloses sealing glue and making method of vulcanised dealcoholized typed silicone structure, which comprises the following steps: allocating raw material with 10-40% polydimethylsiloxane of trimethyl in the rear, 60-90% polydimethylsiloxane of dimethyl in the rear, 60-80% active calcium carbonate, 5-10% gas-phase white carbon black, 5-20% crosslinking agent, 0.5-5% silane coupler, 0.1-7% catalyst and 1-10% silicon oil plasticizer; adding each component into high-speed dispersing stirrer to react under 0.06-0.095Mpa with rotary speed at 20-600rpm for 60-150 min; obtaining the product.

Description

technical field [0001] The invention relates to a single-component room temperature rapid vulcanization dealcoholization type silicone structural sealant and a manufacturing method thereof, belonging to the field of polymer sealing materials. Background technique [0002] Silicone polymer materials have a series of unique properties, such as: excellent weather aging resistance, excellent high and low temperature resistance, good hydrophobicity, excellent biocompatibility, etc., and are widely used in construction, transportation, automobiles, etc. , electronics, aviation, aerospace, textile, machinery, chemical industry, medicine, personal care products (cosmetics) and more than dozens of industrial sectors and daily life have played an irreplaceable role for other synthetic materials. Silicone materials are widely used in construction, mainly sealants with different properties, which are characterized by excellent weather resistance, and the performance changes little withi...

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
IPC IPC(8): C09J183/14C09K3/10
Inventor 袁素兰王有治卢麟邹百军
Owner CHENGDU GUIBAO SCI & TECH
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