Spring can be divided into natural, synthetic and artificial class 3
(1) natural spring
from a certain old rubber tapping in accordance with the provisions of the incision in the stipulation time when outflow of liquid, has milk-white, solid content is 30% ~ 40%, average rubber particle diameter of 1.
6 microns.
Fresh natural spring with rubber composition 27% ~ 41.
3% (
Quality)
0, 44% ~ 70% water, protein.
2% ~ 4.
0, natural resin 2% ~ 5%, sugar 5%.
36% ~ 4.
2%, ash content 0.
4%.
In order to prevent the natural spring because of the action of microbes, enzymes and solidification, often join ammonia and other stabilizer.
Natural spring is mainly used for production of sponge products, extruded products and impregnated products.
(2) the synthesis of spring
general made by emulsion polymerization, such as polybutadiene spring, butyl benzene spring.
To make the solid content of 40% ~ 70%, first make the rubber particles agglomeration into larger particles, to adopt the method of similar to natural spring enrichment.
Synthesis of spring is mainly used for carpet, paper making, textile, printing, coating and adhesive industries.
3. Artificial spring
is a kind of emulsion polymerization of rubber spring.
To add water and colloid generated solution polymerization surfactant, make the rubber particles dispersed in water, and then steamed in addition to the solvent.
If the rubber is not fully dissolved in solvent, raw rubber and rubber can be in the presence of aqueous phase containing emulsifier, kneading, until some form stable rubber.
The purpose of the artificial spring and synthetic spring are basically the same.
