Method for improving plasticity retention index of natural rubber
A natural rubber and index technology, which is applied in the field of improving the plasticity retention index of natural rubber, can solve the problems of high cost and complex processing technology, and achieve the effects of low crosslinking degree, simple preparation process and convenient operation
Active Publication Date: 2022-04-05
RUBBER RES INST CHINESE ACADEMY OF TROPICAL AGRI SCI
View PDF8 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the patented processing technology is complex, high cost, and does not involve oxidation resistance modification
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0025] In order to clearly and completely describe the technical solutions in the present invention, it is obvious that the inventors describe in conjunction with the embodiments, but the following embodiments describe only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0026] A method for improving the plasticity retention index of natural rubber, comprising the following steps:
[0027] Step 1: Take clean and freshly harvested ammonia-free fresh latex and set aside;
[0028] Step 2: Prepare the natural fresh latex coagulation solution, slowly add it to the constantly stirring fresh latex, and mix;
[0029] Step 3: After fully mixing, the fresh latex mixed solution is left still, at natural temperature, after natural solidification and curing, crepe...
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
Login to View More Abstract
The invention provides a method for improving the plasticity retention index of natural rubber, which comprises the following steps: 1, taking clean and freshly harvested ammonia-free fresh latex for later use; 2, preparing a natural fresh latex solidification liquid, slowly adding the natural fresh latex solidification liquid into continuously stirred fresh latex, and mixing; 3, after full mixing, allowing the fresh latex mixed solution to stand, naturally solidifying and curing at a natural temperature, pressing crepes, cutting into crepes with the length of 1.2 m, and hanging and airing the crepes; and 4, drying the rubber crepe obtained in the step 3 with hot air. The natural rubber product obtained by the method disclosed by the invention is low in crosslinking degree, low in Mooney viscosity and high in plasticity retention index which can exceed 100; the antibacterial and mothproof effects are achieved; the natural rubber fresh latex does not need to be diluted, the whole process time is short, the operation is convenient, and the preparation process is simple.
Description
technical field [0001] The invention relates to the field of rubber processing, in particular to a method for improving the plastic retention index of natural rubber. Background technique [0002] Natural rubber, also known as Brazilian rubber or elastic rubber, as originally produced, is a material composed of a polymer of the organic compound isoprene, minor impurities of other organic compounds, and water. At present, rubber mainly comes from the emulsion of rubber trees or other rubber-producing plants. Latex is a viscous milky substance colloid. By making an incision on the bark, the milk duct ruptures, and the latex flows to the collection container on the incision surface through expansion pressure. In most areas, the latex can coagulate in the collection cup. The coagulated lumps are collected and processed into a dry form. Natural rubber is widely used in many applications and products, either alone or in combination with other materials, and in most of its applie...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): C08C1/14C08C1/02C08J3/00C08L7/00
CPCY02T10/86
Inventor 黄红海宋亚忠李建伟戴拓丁丽王岳坤赵立广桂红星
Owner RUBBER RES INST CHINESE ACADEMY OF TROPICAL AGRI SCI