Rubber, oil and resin
Rubber, synthetic rubber and oil is an important raw material of rubber product industry or the importance of rubber processing aids, divided into paraffinic, naphthenic and aromatic three categories. Ideal rubber oil should meet the following conditions: good compatibility, low volatility, ease of processing, resistance to damage and good lubrication, the physical properties of the vulcanizate without adverse effects, emulsification properties, less pollution, non-toxic, stability is good, adequate and affordable sources of such. In comparison, paraffin-based oil rubber antioxidant, light stability is good, but the paraffin base rubber oil emulsification, compatibility and low temperature is poor; aromatic base oil compatibility rubber best rubber products derived from high strength , can be added to large, low cost, but its color depth, causing pollution, toxic, with the improvement of environmental protection requirements will be phased out; and naphthenic rubber base oil are both paraffin and aromatic Kitt resistance, emulsification , compatibility, good and no pollution, no poison, rubber varieties adapted more wide range of applications, it is the ideal rubber oil varieties. Particularly through the hydrogenation reaction, can produce colorless KN Series rubber filled fuel for industrial production of white glue and a light-colored rubber adhesive provides a high quality raw material, a fundamental solution to the past can only produce "yellow glue" can not production of "white glue" problem. To this end, rubber filling oil from the world development trend, the end result is filled rubber naphthenic oil demand will grow through the low pressure hydrogenation of aromatic naphthenic rubber oil would be welcome, and become mainstream products.
As alicyclic epoxy resin epoxy molecular structure not from propylene oxide, epoxy resin directly connected to the ring, so alicyclic epoxy resin and bisphenol A type epoxy resin, compared has the following characteristics: 1. thermal stability: As the alicyclic epoxy resin epoxy resin directly connected to the ring, can form a tight rigid molecular structure, increased crosslinking density after curing, thus more heat distortion temperature High, Martin, can reach 190 over heat, thermal decomposition temperature higher than 360 . Curing shrinkage rate is small, the tensile strength. However, because epoxy equivalent of small, cross-linking density, cured more brittle, ductile difference.
2. Weather is good: alicyclic epoxy resin does not contain the molecular structure of benzene ring, has good weathering properties and UV radiation.
3. Excellent electrical insulation properties: the synthesis process of chlorine, sodium ion, alicyclic epoxy resin has excellent dielectric properties, either from the specific resistance or from the dielectric loss tangent of view, both than bisphenol A epoxy resin is superior.
4. Process performance is good: alicyclic epoxy resin viscosity are relatively small, so when the cast and the suppression of workpiece operations more convenient, this point, especially for large parts of the workpiece processing, the more important. In addition, because alicyclic epoxy resin has the characteristic of low viscosity. It can also be diluted as a good epoxy criminal activity.
5. Safe: cycloaliphatic epoxy resin on the reactivity of organic acids and anhydride amine reactivity than big. Therefore, acid curing agent can be cured fully. In this way avoiding the use of toxic, volatile amine curing is large, relatively safe on the operator
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