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

High-strength weather-resistant modified silane sealant and preparation process thereof

A weather-resistant, high-strength technology, applied in the direction of adhesives, adhesive types, polymer adhesive additives, etc., can solve the problems of easily polluted building materials, low tear strength, poor recoatability, etc., to avoid surface cracks, Low viscosity, effect of suppressing surface cracks

Inactive Publication Date: 2020-10-16
江苏明天胶业有限公司
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In recent years, due to the implementation of more stringent environmental health regulations in my country, traditional polyurethane sealants contain free isocyanate and are prone to form bubbles during curing, which limits their application in many fields, while silicone sealants are limited due to their tear strength. Low, poor recoatability, easy to pollute building materials, making its application subject to criticism from users

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
  • High-strength weather-resistant modified silane sealant and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0065] Collect papermaking black liquor and filter to obtain the filtrate, mix the filtrate with 30% tartaric acid solution in a volume ratio of 1:2, put it into the reactor, heat until boiling, then cool naturally to 50°C, and continue to pour into the reactor Add hydrochloric acid with a concentration of 1mol / L to adjust the pH to 2.5, keep the temperature for 2 hours, and then centrifuge to obtain lignin precipitate; mix the lignin precipitate obtained above with acetone and deionized water at a mass ratio of 1:9:1 and load it into In the beaker, stir with a magnetic stirrer at a speed of 200r / min to obtain a lignin solution, drop the lignin solution into deionized water along the beaker wall to obtain a suspension, put the suspension in a rotary evaporator, Rotate and concentrate to recover acetone, then freeze-dry the concentrated solution for 20 hours to obtain a dried product, and set aside; mix salicylaldehyde, acetic anhydride and sodium acetate in a molar ratio of 1:3...

example 2

[0067] Collect the papermaking black liquor and filter to obtain the filtrate, mix the filtrate with the tartaric acid solution with a mass fraction of 30% in a volume ratio of 1:2, put it into the reactor, heat it until boiling, then cool it naturally to 55°C, and continue to pour it into the reactor Add hydrochloric acid with a concentration of 1mol / L to adjust the pH to 2.8, keep the temperature for 3 hours and then centrifuge to obtain the lignin precipitate; mix the lignin precipitate obtained above with acetone and deionized water at a mass ratio of 1:9:1 and put it into In the beaker, stir with a magnetic stirrer at a speed of 250r / min to obtain a lignin solution, drop the lignin solution into deionized water along the beaker wall to obtain a suspension, put the suspension in a rotary evaporator, Rotate and concentrate to recover acetone, and then freeze-dry the concentrated solution for 22 hours to obtain a dry product for use; mix salicylaldehyde, acetic anhydride and ...

example 3

[0069] Collect the papermaking black liquor and filter to obtain the filtrate, mix the filtrate with the tartaric acid solution with a mass fraction of 30% in a volume ratio of 1:2, put it into the reactor, heat it until it boils, then cool it naturally to 60°C, and continue to pour it into the reactor Add hydrochloric acid with a concentration of 1mol / L to adjust the pH to 3.0, keep the temperature for 4 hours and then centrifuge to obtain the lignin precipitate; mix the lignin precipitate obtained above with acetone and deionized water at a mass ratio of 1:9:1 and put it into In the beaker, stir with a magnetic stirrer at a speed of 300r / min to obtain a lignin solution, drop the lignin solution into deionized water along the beaker wall to obtain a suspension, put the suspension in a rotary evaporator, Rotate and concentrate to recover acetone, then freeze-dry the concentrated solution for 24 hours to obtain a dry product, and set aside; mix salicylaldehyde, acetic anhydride ...

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 relates to a high-strength weather-resistant modified silane sealant and a preparation process thereof, and belongs to the technical field of sealant preparation. The method comprises the following steps: taking papermaking black liquor rich in lignin as a raw material; firstly, removing cellulose and hemi-cellulose by tartaric acid acidolysis; carrying out acid precipitation under the assistance of hydrochloric acid to obtain lignin; then preparing lignin colloidal spheres, namely dried substances, from lignin through a supramolecular self-assembly method; wherein the surface effective phenolic hydroxyl group content is improved; then, enabling salicylaldehyde and acetic anhydride to react under the action of sodium acetate through a Perkin method to generate coumarin; compounding coumarin with the dried substances to obtain a compound weather-resistant reinforcing additive, and finally mixing the compound weather-resistant reinforcing additive, silane modified polyetherresin and other auxiliary materials to finally obtain the high-strength weather-resistant modified silane sealant, which is high in strength, good in weather resistance and wide in application prospect.

Description

technical field [0001] The invention relates to a high-strength weather-resistant modified silane sealant and a preparation process thereof, belonging to the technical field of sealant preparation. Background technique [0002] The traditional cast-in-place construction mode has disadvantages such as long construction period, large environmental pollution and low construction efficiency, which is contrary to the national green and environmental protection development concept, while the prefabricated construction project can promote the development of construction in a more environmentally friendly and efficient way. Development, so as to make up for the defects of traditional cast-in-place buildings. Sealant is the first waterproof measure for prefabricated building joints, and the scientific selection of sealant is very important. [0003] In recent years, due to the implementation of more stringent environmental health regulations in my country, traditional polyurethane s...

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): C09J171/00C09J11/04C09J11/06C09J11/08C08H8/00C08H7/00
CPCC08H6/00C08H8/00C08K2003/2241C08K2003/265C08K2201/011C08L2201/08C08L2205/03C09J11/04C09J11/06C09J11/08C09J171/00C08L77/00C08L97/005C08K13/02C08K3/22C08K5/544C08K3/26C08K5/12C08K5/1545
Inventor 刘彬
Owner 江苏明天胶业有限公司
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