Good Adhesion Strength Excellent Heat and Chemical Resistance Novolac Epoxy Resin HWR-638
General:
HWR-638 is a semi-solid reaction product of epichlorohydrin 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.638 is a semi-solid reaction product of epichlorohydrin 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.638 is a semi-solid reaction product of epichlorohydrin 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.
Sale Specification & 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 |
Application:
Mainly used in the manufacture of various plastics, coatings, adhesives and synthetic fibers.
Storage properties:
Novolac Epoxy Resin (638) is supplied in bulk or in 220KG tight-head drums. The resin should be stored in dry place in its original closed packaging.
Handling precautions:
Product may cause skin and eye irritation. In case of skin contact, wash immediately with soap and water. For eyes, flush with plenty of water for 15 minutes and seek medical attention immediately.
Packing:
220 kg iron drum.
Product Tags:
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Good Adhesion Strength Novolac Epoxy Resin HWR-638 Chemical Resistant Epoxy Resin Images
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