Unlock instant, AI-driven research and patent intelligence for your innovation.

A room temperature vulcanized two-component polysulfide sealant, its preparation and use method

A room temperature vulcanization, two-component technology, applied in the field of materials, can solve the problems of sealant materials such as loss of mechanical properties and aging resistance, easy to break, poor heat resistance of sealants, etc., to improve mechanical properties and improve mechanical properties. Performance, the effect of satisfying the requirement of long life

Active Publication Date: 2017-12-15
BAIMTEC MATERIAL CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of existing lightweight sealant materials is usually achieved by adding a high fraction of low-density fillers to liquid polysulfide rubber, but when the amount of low-density fillers added is high, the mechanical properties of the vulcanized sealant materials Significant loss of performance and aging resistance, unable to meet the long-life requirements of aircraft seals, it is necessary to add reinforcing fillers with excellent reinforcing effects
At the same time, because the polysulfide rubber molecular chain contains a large number of disulfide bonds, it is easy to break under high temperature conditions, resulting in poor heat resistance of the sealant

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
  • A room temperature vulcanized two-component polysulfide sealant, its preparation and use method
  • A room temperature vulcanized two-component polysulfide sealant, its preparation and use method
  • A room temperature vulcanized two-component polysulfide sealant, its preparation and use method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] The preparation method of the room temperature vulcanization two-component polysulfide sealant as described above is characterized in that the steps of preparation are as follows:

[0024] 1. Dealing with low-density packing:

[0025] 1.1. Pickling: Soak the low-density filler in 8% to 12% sulfuric acid aqueous solution and stir for at least 4 hours, then wash with deionized water until the pH value is neutral, and dry in an oven;

[0026] 1.2. Surface treatment: Dissolve the silane coupling agent in absolute ethanol to obtain a silane coupling agent solution with a concentration of 1% to 10%, add low-density fillers into the silane coupling agent solution, and stir for at least 1 hour , the low-density filler is separated from the silane coupling agent solution by filtration, and the low-density filler is dried in an oven;

[0027] 2. Prepare component A:

[0028] 2.1. Weigh various raw materials in proportion;

[0029] 2.2. Ultrasonic dispersion: Put the mercapto-t...

Embodiment 1

[0035] 1. Formula composition

[0036]

[0037]

[0038] 2. Preparation:

[0039] 2.1. Dealing with low-density packing:

[0040] 2.1.1 Pickling: Soak the low-density filler in 8% sulfuric acid aqueous solution and stir for 5 hours, then wash with deionized water until the pH value is neutral, and dry in an oven;

[0041] 2.1.2. Surface treatment: Dissolve the silane coupling agent in absolute ethanol to obtain a silane coupling agent solution with a concentration of 5%, add low-density fillers into the silane coupling agent solution, and stir for 1.5 hours. Separate the low-density filler from the silane coupling agent solution by filtering, and put the low-density filler into an oven to dry;

[0042] 2.2. Prepare component A:

[0043] 2.2.1. Weigh various raw materials in proportion;

[0044] 2.2.2. Ultrasonic dispersion: Put the mercapto-terminated liquid polysulfide rubber into the ultrasonic dispersion equipment, add lamellar filler, and perform ultrasonic dispe...

Embodiment 2

[0053] 1. Formula composition:

[0054]

[0055] 2. Preparation:

[0056] 2.1. Dealing with low-density packing:

[0057] 2.1.1 Pickling: Soak the low-density filler in 10% sulfuric acid aqueous solution and stir for 4.5 hours, then wash with deionized water until the pH value is neutral, and dry in an oven;

[0058] 2.1.2. Surface treatment: Dissolve the silane coupling agent in absolute ethanol to obtain a silane coupling agent solution with a concentration of 5%, add low-density fillers into the silane coupling agent solution, stir for 1 hour, pass Filter to separate the low-density filler from the silane coupling agent solution, and dry the low-density filler in an oven;

[0059] 2.2. Prepare component A:

[0060] 2.2.1. Weigh various raw materials in proportion;

[0061] 2.2.2. Ultrasonic dispersion: Put the mercapto-terminated liquid polysulfide rubber into the ultrasonic dispersion equipment, add lamellar filler, and perform ultrasonic dispersion for 8 hours to o...

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
densityaaaaaaaaaa
densityaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of materials, and relates to a two-component polysulfide sealant vulcanized at room temperature and its preparation and use methods. It is characterized in that it consists of two components, A and B, and the weight ratio of the A component to the B component is 8:1-10:1. The preparation steps are as follows: processing low-density packing; preparing component A; preparing component B. The invention proposes a room temperature vulcanized two-component polysulfide sealant, its preparation and use method, which can improve the mechanical properties, aging resistance and Thermal performance, meeting the long-life requirements of aircraft seals.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to a two-component polysulfide sealant vulcanized at room temperature and its preparation and use methods. Background technique [0002] With the development of the aviation industry, aircraft weight reduction is an eternal theme in the design and manufacture of aircraft. As one of the largest non-metallic functional materials used in aircraft, aerospace sealant materials have great potential for weight reduction. Aviation sealants are widely used in the sealing of integral fuel tanks, fuselages, cockpits, and flaps. The amount used for each aircraft ranges from several hundred kilograms to one thousand kilograms, and its weight reduction is of great significance. At present, most of the reports on lightweight aviation sealants are based on liquid polysulfide rubber, which has good oil resistance, low air permeability, weather resistance and chemical medium resistance, impact resist...

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 Patents(China)
IPC IPC(8): C09J181/02C09J11/04C09J11/06C09J11/08C09K3/10
Inventor 全燕南吴松华章谏正
Owner BAIMTEC MATERIAL CO LTD
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