CN108690207A - Three step vulcanized rubber processing methods - Google Patents
Three step vulcanized rubber processing methods Download PDFInfo
- Publication number
- CN108690207A CN108690207A CN201810343696.6A CN201810343696A CN108690207A CN 108690207 A CN108690207 A CN 108690207A CN 201810343696 A CN201810343696 A CN 201810343696A CN 108690207 A CN108690207 A CN 108690207A
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- CN
- China
- Prior art keywords
- rubber
- molecular weight
- processing methods
- elasticity
- present
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
- C08J3/246—Intercrosslinking of at least two polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2307/00—Characterised by the use of natural rubber
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2421/00—Characterised by the use of unspecified rubbers
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The present invention provides a kind of three step vulcanized rubber processing methods, by 7:3 ratio blended natural rubber and artificial rubber raw material is added the dilute sulfuric acid that mass fraction is 10-20% and carries out three step vulcanizing treatments, finally wait for cooled to room temperature.The present invention is vulcanized by three steps, improves the molecular weight in rubber, and molecular weight is bigger, it is cannot meeting with stresses, do not have contributive free-end quantity fewer elasticity, in addition molecular weight is big, and " quasi-crosslink " effect increases caused by entangled with one another in strand, is conducive to the raising of elasticity.
Description
Technical field
The present invention relates to method for preparing rubber field, specifically a kind of three steps vulcanized rubber processing method.
Background technology
Rubber refers to the high elastic polymer material for having reversible deformation, high resilience at room temperature, in the external force of very little
Effect is lower to be generated compared with large deformation, and resilient after external force is removed.Rubber belongs to entirely without styling polymer, its vitrifying
Transition temperature is low, and molecular weight is often very big, is more than hundreds of thousands.
The rubber of early stage is taken from the latex of the plants such as rubber tree, kok-saghyz, manufactured after processing to have elasticity, insulation
The material of property, impermeable water and air.Elastomeric high-molecular compound.It is divided into two kinds of natural rubber and synthetic rubber.Natural rubber
Glue is made of the extraction colloid post-processing from the plants such as rubber tree, kok-saghyz;Synthetic rubber is then by the aggregated reaction of various monomers
And it obtains.Rubber product is widely used in all aspects of industry or life.
Rubber material feature most prominent at normal temperatures is the high resiliency not available for other materials.High resiliency is high polymer
A kind of distinctive mechanical state based on sub-chain motion is that the ordinary elasticity institute that other are changed based on bond angle, bond distance is incomparable
's.The deformation quantity of the metal materials such as general copper, steel only has about 1%, and the high elastic deformation at least 100% of rubber material, highest is then reachable
100% or more.
Ideal high resiliency be entirely as caused by the rubber macromolecule conformation change crimped, can be immediately after removing external force
It restores.However, there are interaction forces and interior rotational resistance between rubber molecule in practice, the fortune of molecule segment can be interfered
It is dynamic, the viscosity of rubber is shown as, the power part acted on rubber molecule is for overcoming intermolecular viscous drag, another portion
Dividing makes molecule deformation of chain.
Invention content
The present invention in order to solve problems in the prior art, provides a kind of three step vulcanized rubber processing methods, passes through three steps
Vulcanization, improves the molecular weight in rubber, and molecular weight is bigger, cannot meeting with stresses, do not have contributive free-end to elasticity
Quantity is fewer, and in addition molecular weight is big, and " quasi-crosslink " effect increases caused by entangled with one another in strand, is conducive to elasticity
It improves.
The present invention includes the following steps:
1)By 7:3 ratio blended natural rubber and artificial rubber raw material;
2)The dilute sulfuric acid that mass fraction is 10-20% is added, adjusts the temperature to 400-500;
3)Carry out three step vulcanizing treatment techniques:
3.1)Curing temperature is 350-400 DEG C, vulcanization time 30-40min, sulfide stress 300-500mpa;
3.2)Curing temperature is 250-300 DEG C, vulcanization time 10-20min;
3.3 curing temperatures are 100-200 DEG C, vulcanization time 1-2h;
4)Wait for cooled to room temperature.
Advantageous effect of the present invention is:Vulcanized by three steps, improves the molecular weight in rubber, molecular weight is bigger, cannot
It is meeting with stresses, do not have contributive free-end quantity fewer elasticity, in addition molecular weight is big, it is entangled with one another in strand and
Caused " quasi-crosslink " effect increases, and is conducive to the raising of elasticity.
Specific implementation mode
The invention will be further described below.
The present invention includes the following steps:
1)By 7:3 ratio blended natural rubber and artificial rubber raw material;
2)The dilute sulfuric acid that mass fraction is 10-20% is added, adjusts the temperature to 400-500;
3)Carry out three step vulcanizing treatment techniques:
3.1)Curing temperature is 350-400 DEG C, vulcanization time 30-40min, sulfide stress 300-500mpa;
3.2)Curing temperature is 250-300 DEG C, vulcanization time 10-20min;
3.3 curing temperatures are 100-200 DEG C, vulcanization time 1-2h;
4)Wait for cooled to room temperature.
There are many concrete application approach of the present invention, the above is only a preferred embodiment of the present invention, it is noted that for
For those skilled in the art, without departing from the principle of the present invention, it can also make several improvements, this
A little improve also should be regarded as protection scope of the present invention.
Claims (1)
1. a kind of three step vulcanized rubber processing methods, it is characterised in that include the following steps:
1)By 7:3 ratio blended natural rubber and artificial rubber raw material;
2)The dilute sulfuric acid that mass fraction is 10-20% is added, adjusts the temperature to 400-500;
3)Carry out three step vulcanizing treatment techniques:
3.1)Curing temperature is 350-400 DEG C, vulcanization time 30-40min, sulfide stress 300-500mpa;
3.2)Curing temperature is 250-300 DEG C, vulcanization time 10-20min;
3.3 curing temperatures are 100-200 DEG C, vulcanization time 1-2h;
4)Wait for cooled to room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810343696.6A CN108690207A (en) | 2018-04-17 | 2018-04-17 | Three step vulcanized rubber processing methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810343696.6A CN108690207A (en) | 2018-04-17 | 2018-04-17 | Three step vulcanized rubber processing methods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108690207A true CN108690207A (en) | 2018-10-23 |
Family
ID=63844979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810343696.6A Pending CN108690207A (en) | 2018-04-17 | 2018-04-17 | Three step vulcanized rubber processing methods |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108690207A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105860396A (en) * | 2016-05-08 | 2016-08-17 | 丰泽工程橡胶科技开发股份有限公司 | High-damping rubber and preparation method thereof |
| CN105985543A (en) * | 2015-01-30 | 2016-10-05 | 中国石油天然气股份有限公司 | Rubber composition and preparation method thereof |
-
2018
- 2018-04-17 CN CN201810343696.6A patent/CN108690207A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105985543A (en) * | 2015-01-30 | 2016-10-05 | 中国石油天然气股份有限公司 | Rubber composition and preparation method thereof |
| CN105860396A (en) * | 2016-05-08 | 2016-08-17 | 丰泽工程橡胶科技开发股份有限公司 | High-damping rubber and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 张玉龙，等: "《橡胶改性技术》", 30 September 2006, 机械工业出版社 * |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181023 |