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Factory Price Excellent Heat and Chemical Resistance Novolac Epoxy Resin Hwr-638
| Price | $2.60 |
|---|---|
| Min Order | 1000 kg |
| Availability | In Stock |
| Shipping From | Hubei, China |
| Popularity | 328 people viewed |
Model NO.:
HWR-638
Molecular Principal Chain:
Heterochain Polymer
Color:
Yellowish
Application:
Coating, Adhesive, Sealant, Epoxy Flooring
Appearance:
Clear Liquid
Epoxy Equivalent Weight (G/EQ):
174-180
Viscosity:
H-K
Chemical Composition:
Novolac Epoxy Resin
Trademark:
Honrepoxy
Transport Package:
Drum
Specification:
220KG/Drum
Origin:
China
HS Code:
3907300090
Product Description
General description
HWR-638 is a semi-solid reaction product of epichlorohydrn and phenol-formaldehyde novolac. It has advantageous characteristics of good adhesion strength, excellent heat and chemical resistance because of its multi-functional groups in one molecule fully cross-linked. Therefore, it has excellent physical properties in addition to the basic reactivity of general Epoxy Resin.
Characteristic: Typical applications:
• High viscosity • Heat resistant adhesives
• High temperature resistance • Heat resistant Coatings
• Chemical resistance • Laminates
• Good adhesion strength • Composite
• High mechanical strength • PCB inks
• Potting and Encapsulation
Typical properties:
| Property | Value |
| Appearance | Yellowish, Transparent, Semi-solid |
| Epoxy equivalent (g/mol) | 174-180 |
| Color (Gardner) | ≤ 1 |
| Chloride Content (ppm) | ≤5 |
| Hydrolyzable Content (ppm) | ≤300 |
| Volatile matter (ppm) | ≤500 |
| Viscosity ( cps,25°C) | H-K |
Storage:
Novolac Epoxy Resin HWR-638 is supplied in bulk or in 220KG tight-head drums. The resin should be stored in dry place in its original closed packaging.
Shelf life is 12 months.
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