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

Gutta-percha masterbatch co-blended material capable of being directly used as traditional rubber material

A technology of rubber material and eucommia gum, which is applied in the field of eucommia rubber masterbatch blending new materials and preparation, can solve the problems of difficult adhesion of tread joints, difficulty in tire blank molding, and prolonged time for rubber to fill the mold cavity, etc.

Inactive Publication Date: 2016-08-31
BEIJING UNIV OF CHEM TECH
View PDF5 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the crystallization characteristics of Eucommia gum, it has encountered obstacles in the traditional rubber processing technology, especially in tire processing.
The specific performance is as follows: 1) Eucommia gum requires medium and high temperature processing due to crystallization, which is not in line with the existing low-temperature rubber processing equipment; 2) Eucommia rubber composite tread will become hard due to crystallization, resulting in difficulty in forming the tire blank; 3) Eucommia rubber composite tread will The viscosity is lost due to crystallization, and the joints of the treads are not easy to bond; 4) When the Eucommia rubber compound tread enters the tire mold for vulcanization, the fluidity of the rubber material will become poor due to crystallization, resulting in prolonged filling of the mold cavity by the rubber material, or causing The tire is scrapped due to partial lack of rubber

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
  • Gutta-percha masterbatch co-blended material capable of being directly used as traditional rubber material
  • Gutta-percha masterbatch co-blended material capable of being directly used as traditional rubber material
  • Gutta-percha masterbatch co-blended material capable of being directly used as traditional rubber material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Eucommia gum / styrene-butadiene rubber to prepare passenger car tread raw rubber masterbatch and composite masterbatch: select a temperature-controllable internal mixer, and control the processing temperature at 65±5°C. Determine the total mass of batch rubber mixing according to the model size of the internal mixer, and the ratio of Eucommia gum to styrene-butadiene rubber is 1:99. Then add Eucommia gum to the internal mixer for plasticating, the plasticizing time is 30 seconds, during which the Eucommia gum gradually softens, and then add the remaining proportion of styrene-butadiene rubber for blending, the blending time is 5 minutes, and the blending rubber is mixed Evenly smelted, the raw rubber masterbatch for passenger car eucommia rubber / styrene butadiene rubber tread can be obtained. After testing, the Mooney viscosity is 54, and the hardness is 43 degrees (Shore A). It meets the requirements of the rubber industry for the use of raw rubber.

[0039] The formu...

Embodiment 2

[0043] Eucommia gum / butadiene rubber / natural rubber to prepare passenger car tire side raw rubber masterbatch and composite masterbatch: select a temperature-controllable open mill, and control the processing temperature at 70±5°C. Determine the total mass of batch rubber mixing according to the model size of the open mill, and the ratio of Eucommia gum / butadiene rubber / natural rubber is 5:50:45. Then add Eucommia gum to the open mill for plasticating. The plasticizing time is 5 minutes. During this period, the Eucommia gum gradually softens and wraps the roll. Then add the remaining proportion of butadiene rubber and styrene-butadiene rubber for blending. The blending time is 15 minutes. , and other blended rubbers are mixed evenly to obtain passenger car eucommia rubber / butadiene rubber / natural rubber passenger car tire side raw rubber masterbatch. After testing, the Mooney viscosity is 48 and the hardness is 39 degrees (Shore A). It meets the requirements of the rubber ind...

Embodiment 3

[0048] Eucommia rubber / natural rubber / styrene-butadiene rubber / butadiene rubber to prepare heavy-duty tread raw rubber masterbatch and composite masterbatch: select a single-screw extruder with temperature control, the parameters are: screw diameter 30mm, aspect ratio 25 :1, the maximum speed is 115rpm, the maximum output is 11kg / hour, and the processing temperature is controlled at 75±5℃. The ratio of eucommia gum / natural rubber / styrene-butadiene rubber / butadiene rubber is 15:35:30:20. First, crush Eucommia gum / natural rubber / styrene-butadiene rubber / butadiene rubber to particles with a particle size of about 5mm, and then use a mixer to disperse the blended rubber particles evenly. The rubber blend granules described above were then fed into the extruder. Under the action of the extruder, the blended masterbatch is continuously extruded from the extruder. In order to make the mixing of the masterbatch more uniform, a 2-stage mixing process is adopted in this embodiment. S...

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 diameteraaaaaaaaaa
hardnessaaaaaaaaaa
hardnessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a gutta-percha masterbatch co-blended material capable of being directly used as a traditional rubber material. Gutta-percha is hard rubber at room temperature, cannot be directly used as a rubber material, thereby hindering large-scale application of the gutta-percha in rubber industries. The gutta-percha is specially co-blended with other rubber types to prepare a gutta-percha masterbatch. The preparation method can be divided into a dry process and a wet process, wherein the dry process comprises that through a temperature controllable open mill, an internal mixer, an extruder, a mixing machine and other processing devices, the gutta-percha is evenly mixed in other rubber types according to a certain proportion to prepare the co-blended new material; the wet process comprises that through a reaction kettle, a stirring kettle and other devices, the gutta-percha and other rubber types are dissolved in a good solvent according to a proportion and fully stirred to prepare the co-blended new material through solvent recovery and other processes. According to the processes, the gutta-percha raw masterbatch can be prepared; other auxiliary agents are added to prepare the gutta-percha composite masterbatch, and the barrier is cleared up for large-scale market application of the gutta-percha.

Description

technical field [0001] The invention relates to a new eucommia gum masterbatch blending material which can be directly used as a traditional rubber material and a preparation method. Background technique [0002] In 2014, my country consumed 4.8 million tons of natural rubber, of which 870,000 tons were self-produced and 4.22 million tons were imported. The dependence on foreign countries exceeds 80%, and the situation is very grim. Therefore, based on the country, developing a second natural rubber resource that can completely replace clover natural rubber is an effective way to break my country's heavy dependence on imports of natural rubber. At present, the most promising second rubber sources in China are dandelion rubber originating in Kazakhstan and the Tianshan region on the border of Xinjiang, China; guayule rubber originating in northern Mexico and Eucommia rubber unique to my country. [0003] Eucommia ulmoides, a single family, single genus, deciduous tree, nati...

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): C08L9/06C08L7/00C08L9/00C08L23/28C08L11/00C08K13/02C08K3/22C08K5/09C08K3/04C08K3/36C08K3/26C08K3/06
CPCC08L7/00C08L9/00C08L9/06C08L11/00C08L23/283C08L2205/025C08L2205/03C08L2205/035C08K13/02C08K2003/2296C08K5/09C08K3/04C08K3/36C08K2003/265C08K3/06C08K2003/222C08K2003/2227
Inventor 张继川张立群伍社毛刘军张茜张天鑫刘源博
Owner BEIJING UNIV OF CHEM TECH
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