Check patentability & draft patents in minutes with Patsnap Eureka AI!

Short fiber filled rubber master batch and preparation method thereof

A technology of filling rubber and short fibers, applied in the field of masterbatch processing and fiber-filled rubber masterbatch processing, it can solve the problems of poor interfacial bonding, tensile strength, elongation and other physical properties, as well as bonding, fatigue performance reduction, and dispersion of fillers. Calcium carbonate is not universal and other problems, to achieve the effect of improving hysteresis and simple preparation process

Active Publication Date: 2014-10-15
NO 53 RES INST OF CHINA NORTH IND GRP
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] CN102167869A has introduced the method for preparing pre-dispersed aramid pulp masterbatch by high-speed stirring a large amount of microfine active light calcium carbonate, coupling agent and aramid pulp, then adding EPDM rubber for forced feeding and extruding granulation. The method can realize the uniform dispersion of aramid pulp in rubber, so that the rubber using this masterbatch has excellent high-temperature aging resistance, but due to the non-universality of dispersed filler calcium carbonate, the application of this masterbatch in rubber is limited. Major limitations
[0005] For short fiber reinforced rubber composites with a diameter greater than 0.5um, although the short fibers are easier to disperse in the rubber matrix, due to their surface inertness, they are poorly bonded to the rubber molecular interface, and physical properties such as tensile strength, elongation and viscosity are poor. connection, fatigue performance reduction

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
  • Short fiber filled rubber master batch and preparation method thereof
  • Short fiber filled rubber master batch and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preparation method of staple fiber masterbatch: 100 parts of trans polyisoprene powder (ML 100℃ 3+4 145), 50 parts of carbon fiber with a diameter of 7um and a length of 5mm, 10 parts of FXTY-FRD aromatic hydrocarbon oil, 1 part of acrylate and 1 part of zinc acrylate were added to the high-speed stirring equipment, stirred at 60r / min for 10min and mixed evenly at 23 ° C ~ 30 ℃ discharge, put the uniformly mixed powder into the twin-screw extruder, control 80℃~100℃ to extrude the short fiber masterbatch sheet.

[0023] The compounded rubber composition using the short fiber masterbatch: natural rubber: 80 parts; 32.4 parts of the above-mentioned trans polyisoprene short fiber masterbatch; stearic acid: 2 parts; zinc oxide: 5 parts; coumarone Resin: 3 parts; N220 carbon black: 45 parts; Gr175 precipitated silica: 10 parts; Antiaging agent 4010NA: 1 part; Antiaging agent RD: 1 part; Sulfur: 2.5 parts; 2-Mercaptobenzothiazole: 0.2 parts ; N-cyclohexyl-2-benzothiazole...

Embodiment 2

[0031] The preparation method of staple fiber masterbatch: 100 parts of trans polyisoprene powder (ML 100℃ 3+4 100), 5 parts of aramid staple fiber with an average diameter of 12um and a length of 3mm, and 11 parts of XJTY-FRD aromatic hydrocarbon oil were added to the high-speed stirring equipment, stirred at 70r / min for 8min, discharged at 30°C to 40°C, and the mixture was added The extruder extrudes and granulates at 90-100°C.

[0032] The rubber composition using the short fiber masterbatch is: natural rubber: 80 parts; 23.2 parts of the above short fiber masterbatch; stearic acid: 2 parts; zinc oxide: 5 parts; coumarone resin: 5 parts; N220 carbon black : 45 parts; Precipitated white carbon black 10 parts; Antiaging agent 4010NA: 1 part; Antiaging agent RD: 1 part; Sulfur: 2.5 parts; N-cyclohexyl-2-benzothiazole sulfenamide: 0.8 parts; 2- Mercaptobenzothiazole: 0.2 parts; bis(3-trialkoxysilylpropyl) tetrasulfide: 0.5 parts. The mixing rubber and sample preparation proc...

Embodiment 3

[0036] The preparation method of staple fiber masterbatch: 100 parts of trans polyisoprene powder (ML 100℃ 3+4 80), 7.5 parts of aramid fibers with an average diameter of 12um and a length of 2.5mm, and 13 parts of XJTY-FRD aromatic hydrocarbon oil were added to a high-speed stirring device, stirred at 80r / min for 10min, and the material was discharged at a controlled temperature of 35°C to 45°C, and the mixed The material is added to the extruder and extruded at 110-120°C for granulation.

[0037] The rubber composition using the short fiber masterbatch is: natural rubber: 80 parts; 24.1 parts of the above short fiber masterbatch; stearic acid: 2 parts; zinc oxide: 5 parts; coumarone resin: 5 parts; N220 carbon black : 45 parts; Precipitated white carbon black 10 parts; Antiaging agent 4010NA: 1 part; Antiaging agent RD: 1 part; Sulfur: 2.5 parts; N-cyclohexyl-2-benzothiazole sulfenamide: 0.8 parts; 2- Mercaptobenzothiazole: 0.2 parts; bis(3-trialkoxysilylpropyl) tetrasulfi...

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 belongs to the technical field of rubber material processing, and relates to a short fiber filled rubber master batch. Under the existence of filling oil, the short fibers can be well dispersed in a trans-polyisoprene rubber by adopting high-speed stirring, so that the interface adhesiveness of rubber and short fibers is improved. The short fiber filled rubber master batch comprises the following components in parts by mass: 100 parts of trans-polyisoprene powdered rubber, 5-50 parts of short fibers, 5-15 parts of aromatic oil, and 0-2 parts of a thickening agent. The rubber master batch is prepared during the oil filling process of rubber synthesis by adopting the following steps: adding the short fibers and the aromatic oil into the powdered rubber; stirring for 5-10 min under the temperature ranging from the normal temperature to 50 DEG C; extruding by adopting a double-screw at the temperature of 80-150 DEG C for technological molding. The short fiber filled rubber master batch can keep the tensile strength, elongation and bonding strength of rubber, and improve the hysteresis and elasticity; the rubber master batch is simple in the preparation technology, suitable for batch production, and applicable to pure rubber products and rubber-metal composite product requiring high strength, low hysteresis, high elasticity, high heat resistance and fatigue resistance under the condition of low elongation.

Description

technical field [0001] The invention belongs to the technical field of rubber material processing, and relates to masterbatch processing technology, in particular to fiber-filled rubber masterbatch processing technology. Background technique [0002] It is well known that filling reinforced rubber with short fibers can improve the strength under small deformation and the properties of wear resistance, cutting resistance, fatigue resistance and creep resistance. However, in the preparation of short fiber reinforced rubber composites, short fibers are directly added, the fibers are easy to bundle, it is difficult to disperse uniformly in the rubber, and the adhesion to the surface of the polymer is poor, resulting in tensile strength, elongation and bonding strength. Decline, not only can not give full play to the high temperature resistance and creep resistance of the fiber, but also directly affect the bonding performance of rubber-metal composite products. Some patents int...

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): C08L9/00C08L77/10C08K13/04C08K7/06C08K3/04C08K5/01C08K5/098C08K5/101C08J3/22C08L7/00
Inventor 杜华太谢富霞杜明欣景玉龙张春梅张志刚崔俞庞明磊
Owner NO 53 RES INST OF CHINA NORTH IND GRP
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