Supercharge Your Innovation With Domain-Expert AI Agents!

Neutral transparent silicone adhesive and preparation method thereof

A silicone adhesive, transparent technology, applied in chemical instruments and methods, adhesives, silicon compounds, etc., can solve the problems of difficulty in dispersion, rising costs, reducing the production cost of transparent silicone adhesives, etc. polar effect

Pending Publication Date: 2021-01-19
广州凌玮科技股份有限公司
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the price of fumed silica is relatively high. If precipitated silica produced by liquid phase method can be used instead of fumed silica, the production cost of transparent silicone adhesive will be greatly reduced.
[0005] The liquid phase method precipitated silica is mainly synthesized in the water phase. Due to the strong affinity between water and silanol, its surface water content and the amount of silanol are much higher than those of gaseous silica. It can be directly used as a reinforcing filler for silicone rubber. Difficult to disperse, easy to produce structure in the process of mixing and storage, so strict water removal is required during use, resulting in increased costs, and cannot reflect the cost advantage of replacing fumed silica

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
  • Neutral transparent silicone adhesive and preparation method thereof
  • Neutral transparent silicone adhesive and preparation method thereof
  • Neutral transparent silicone adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0053] The preparation method of neutral transparent silicone glue comprises following preparation steps:

[0054] Vacuumize the base rubber, silicone oil, and precipitated white carbon black at 100°C-150°C for 2h-4h, and then ventilate and cool to obtain the base rubber mixture; the cooled base rubber mixture, crosslinking agent, coupling agent, Mix the plasticizer, vacuumize and stir for 30min-40min, and then put it in a cylinder to obtain a neutral transparent silicone glue.

Embodiment 1

[0057] Put 1500g of 107 glue with a viscosity of 80,000, 1647g of silicone oil, and 500g of precipitated white carbon black at 150°C for 3 hours in a vacuum (the pressure is lower than 0.08MPa), and then ventilate and cool to prepare the base glue; weigh 1000g of the base glue, methyl Tributylketoxime base silane 67.2g, vinyl tributylketoxime base silane 8g, KH-550 silane coupling agent 2.4g, KH-560 silane coupling agent 5.6g, white oil 80g, vacuumize and stir for 30 minutes (pressure lower than 0.08MPa), and then put it in a cylinder to obtain a neutral transparent silicone glue.

[0058] Wherein, the precipitated silica comprises the following preparation steps:

[0059] At a temperature of 80°C, inject 100L of bottom water and 75L of 20wt% water glass solution into the stirred reaction vessel, and add sulfuric acid with a concentration of 10wt% until the pH value of the system becomes 6, and the addition time is 30 minutes. After the reaction was completed, the temperature...

Embodiment 2

[0064] Put 1500g of 107 glue with a viscosity of 80,000, 1647g of silicone oil, and 500g of precipitated white carbon black at 150°C for 3 hours in a vacuum (the pressure is lower than 0.08MPa), and then ventilate and cool to prepare the base glue; weigh 1000g of the base glue, methyl Tributylketoxime base silane 67.2g, vinyl tributylketoxime base silane 8g, KH-550 silane coupling agent 2.4g, KH-560 silane coupling agent 5.6g, white oil 80g, vacuumize and stir for 30 minutes (pressure lower than 0.08MPa), and then put it in a cylinder to obtain a neutral transparent silicone glue.

[0065] Wherein, the precipitated silica comprises the following preparation steps:

[0066] At a temperature of 60°C, inject 100L of bottom water and 75L of 20wt% water glass solution into the stirred reaction vessel, and add sulfuric acid with a concentration of 30wt% until the pH value of the system becomes 5, and the addition time is 30 minutes. After the reaction was completed, the temperature...

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
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a neutral transparent silicone adhesive and a preparation method thereof. The neutral transparent silicone adhesive comprises the following components in parts by weight: 20-50parts of base adhesive; 5-15 parts of precipitated white carbon black; 20-50 parts of silicone oil; 0.1-1 part of a coupling agent; 0.1-3 parts of a cross-linking agent; and 1-3 parts of a plasticizer. The precipitated white carbon black is prepared by the following steps: preparing precipitated white carbon black from a water glass solution; adding dilute sulfuric acid and an organosilane dispersing agent into the precipitated white carbon black, and performing aging to obtain a filter cake; re-dispersing the filter cake in water to obtain slurry; carrying out spray drying on the slurry, andcarrying out high-temperature jet milling. According to the invention, through the composition of the base rubber, the white carbon black, the cross-linking agent and the like, since the organosilanedispersing agent is added into the white carbon black, on one hand, the particle size of the white carbon black can be reduced, a structure similar to fumed silica is obtained, and on the other hand,the polarity of the particle surface is reduced, so that the white carbon black is easier to disperse in polydimethylsiloxane.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a neutral transparent silicone adhesive and a preparation method thereof. Background technique [0002] Silicone glue is a kind of sealant, which refers to the sealant produced with linear polysiloxane as the main raw material, also called silicone sealant. Silicone glue is the key bonding and sealing material for glass curtain wall, aluminum curtain wall and stone curtain wall. The production and application of silicone rubber abroad has a relatively high level, and the global market is basically occupied by several major companies such as Dow Corning, GE in the United States, Wacker in Germany, RP in France, and Shin-Etsu in Japan. Dow Corning's products occupy the main domestic market. Since the 1990s, the development speed of my country's silicone rubber has been significantly accelerated. Domestic products of acid silicone rubber have occupied more than 50% of the domest...

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): C09J183/04C09J11/04C09J11/06C01B33/193
CPCC09J183/04C09J11/04C09J11/06C01B33/193C08L2201/10C08K2201/014C01P2004/61
Inventor 胡颖妮
Owner 广州凌玮科技股份有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com