novolac meaning in Hindi

Examples

1. Novolac epoxies are particularly noted for chemical resistance and acid resistance.
2. In this application DNQs are mixed with Novolac resin, a type of phenolic polymer.
3. Bisphenol A and novolac based cyanate esters are the major products; bisphenol F and bisphenol E are also used.
4. CNSL-based Novolac is another versatile industrial monomer deriving from cardanol typically used as a composite applications providing good thermal and mechanical properties to the final composite material.
5. One reacts phenol and formaldehyde directly to produce a thermosetting network polymer, while the other restricts the formaldehyde to produce a prepolymer known as "'novolac "'which can be moulded and then cured with the addition of more formaldehyde and heat.
6. "' Epoxy Phenol Novolac "'( EPN ) and "'Epoxy Cresol Novolac "'( ECN ) resins made by reacting epichlorohydrin with multifunctional phenol novolac or cresol novolac resins have more reactive sites compared to DGEBF epoxy resins and on cure result in higher crosslink density thermosets.
7. "' Epoxy Phenol Novolac "'( EPN ) and "'Epoxy Cresol Novolac "'( ECN ) resins made by reacting epichlorohydrin with multifunctional phenol novolac or cresol novolac resins have more reactive sites compared to DGEBF epoxy resins and on cure result in higher crosslink density thermosets.
8. "' Epoxy Phenol Novolac "'( EPN ) and "'Epoxy Cresol Novolac "'( ECN ) resins made by reacting epichlorohydrin with multifunctional phenol novolac or cresol novolac resins have more reactive sites compared to DGEBF epoxy resins and on cure result in higher crosslink density thermosets.
9. "' Epoxy Phenol Novolac "'( EPN ) and "'Epoxy Cresol Novolac "'( ECN ) resins made by reacting epichlorohydrin with multifunctional phenol novolac or cresol novolac resins have more reactive sites compared to DGEBF epoxy resins and on cure result in higher crosslink density thermosets.