General description
Novolac Epoxy Resi 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.
• High mechanical strength
• Potting and Encapsulation
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Appearance
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Yellowish, Transparent, Semi-solid
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Epoxy equivalent (g/mol)
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174-180
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Color (Gardner)
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≤1
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Chloride Content (ppm)
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≤5
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Hydrolyzable Content (ppm)
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≤300
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Volatile matter (ppm)
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≤500
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Viscosity（cps,25°C）
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H-K
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