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

A kind of high-barrier bromobutyl rubber with alternating layered structure and preparation method thereof

A technology of bromobutyl rubber and alternating layers, which is applied in the field of composite materials, can solve the problems of reducing air tightness, high production costs, and complicated procedures, and achieve the effects of improving gas barrier properties, improving mechanical properties and fatigue resistance

Active Publication Date: 2022-07-29
SICHUAN UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this patent, through co-extruding the compound, multiple times of rubber mixing are required, the process is complicated, and the production cost is high; seriously reduce its airtightness

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 kind of high-barrier bromobutyl rubber with alternating layered structure and preparation method thereof
  • A kind of high-barrier bromobutyl rubber with alternating layered structure and preparation method thereof
  • A kind of high-barrier bromobutyl rubber with alternating layered structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0043] Preparation of carbon black modified bromobutyl rubber (BIIR / CB):

[0044] Before the experiment, the carbon black was dried in a drying oven at 105 °C ± 2 °C for 2 h. Weigh the materials according to the ratio in Table 1, set the temperature of the front and rear rolls of the open mill (LRMR-S-150 / W, Thailand Labtech Co., Ltd.) to be 45°C and 35°C respectively, and the roll speed ratio to be 1.25. After the mill was stabilized for 30min, put the bromobutyl rubber (BIIR) into the mill, make it roll, according to zinc oxide, stearic acid, magnesium oxide, carbon black, tackifier, naphthenic oil, Add the small materials to the roller in the order of sulfur and accelerator. After each feeding, the left and right knives are cut twice to make the components fully mixed. The roller distance is reduced to 0.5mm, and the triangular bag and the roll are each 5 times. time, and finally adjust the required roller distance to eject the sheet.

[0045] Using the above-mentioned pr...

experiment example

[0076] 1. Microstructure of layered rubber material

[0077] Under an optical microscope, the cross-sectional microstructures of the layered rubber materials of Examples 3, 5, 6, and 7 were observed, and the results were as follows: figure 1 As shown, a-d in the figure correspond to Embodiments 3, 5, 6, and 7, respectively.

[0078] from figure 1 As can be seen from the above, in a-d, it can be clearly seen that the layers of 2 layers, 4 layers, 6 layers and 8 layers. The distribution of graphene and carbon black in the composite material is uniform, and the BIIR / CB layers and BIIR / mGO layers are alternately arranged. Since the matrix is ​​all BIIR, there is no obvious phase interface. In BIIR, graphene is arranged in layered sheets and the content is relatively small, and it appears as well-ordered layered barrier walls on the side of the material.

[0079] 2. Gas barrier properties of layered rubber materials

[0080] The carbon black modified bromobutyl rubber, graphene...

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
thicknessaaaaaaaaaa
osmotic coefficientaaaaaaaaaa
osmotic coefficientaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of composite materials, in particular to a high-barrier bromobutyl rubber with an alternating layered structure and a preparation method thereof, comprising a carbon black modified bromobutyl rubber layer A and a sheet-shaped filler modified The bromobutyl rubber layer B, the bromobutyl rubber layer A and the bromobutyl rubber layer B are alternately stacked to form a layered bromobutyl rubber, wherein the bromobutyl rubber layer In B, two-dimensional flake fillers are distributed along the direction perpendicular to the gas diffusion. In the present invention, the base materials of layer A and layer B are both bromobutyl rubber, which can form an integral rubber material after the process of compression molding, and the compatibility and adhesion between layers are good , which can form rich interfacial energy, provide more diffusion paths for small gas molecules, and then improve the gas barrier properties of rubber materials.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a high-barrier bromobutyl rubber with an alternating layered structure and a preparation method thereof. Background technique [0002] The main function of the tire inner liner is to prevent gas leakage and ensure the internal pressure of the tire. During the use of aviation tires, the tires are subjected to high internal pressure and high load, as well as high temperature and high stress. The inner lining of the tire is mostly rubber, and the temperature has a great influence on the mechanical properties of the rubber, which will accelerate the aging of the rubber. The aging causes the basic physical and chemical properties of the rubber to change in a short period of time. The tire is prone to flexural fatigue, which affects the barrier performance of the inner liner. [0003] Therefore, tire inner lining materials must not only have high air tightness, but also h...

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): B32B25/18B32B25/04C08L23/28C08L91/00C08K3/04C08K3/22C08K3/06C08K9/04C08K7/00C08J5/18
CPCB32B25/18B32B25/04C08J5/18C08J2323/28C08J2491/00C08K3/04C08K2003/2296C08K2003/222C08K3/06C08K9/04C08K7/00C08K3/042
Inventor 熊英吴宏郭少云杨思强张力伟
Owner SICHUAN UNIV
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