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Powdered Novolac Phenolic Resin With Hexamine For Grinding Wheels
Powdered Novolac Phenolic Resin With Hexamine For Grinding Wheels
Specifications
Brand Name :
HONINGLITE
Model Number :
P2324
Place of Origin :
CHINA
MOQ :
1000KGS
Price :
Negotiation
Payment Terms :
T/T, L/C, D/P
Supply Ability :
5000TONS PRT MONTH
Packaging Details :
25KGS BAG
Appearance :
Light yellow powder
Package :
25kg bag
Melting point :
98-105℃
Gel time :
80-100 s @150℃
Flow :
50-70 mm @ 125℃
Application :
Grinding Wheels
Description

Powdered Novolac Phenolic Resin with Hexamine For Grinding Wheels

Product description

A novolak resin (two-step) is produced by condensing phenol with an insufficient amount of formaldehyde to complete the reaction in the presence of an acid catalyst. This produces a thermoplastic resin. To cure this resin, a hardening agent is used, HMTA (or hexa). Under heat and pressure, it yields ammonia and formaldehyde as methylene groups to cure the resin, hence the term “two-step,” because of the two formaldehyde additions. A novolak phenolic resin has an infinite shelf life under normal storage conditions.

Application

Bonded abrasives like grinding wheels are comprised of abrasive particles embedded in a bonding matrix. While the grit used may be from a wide variety of minerals and abrasive particles, phenolic resin is the matrix binder of choice. Achieving the optimal combination of resistance to burst or fracture strength, flexibility and porosity, coupled to the manufacturing method, requires optimization of the binding resin to the specific application of the wheel in question. Modification of the blend of phenolic novolac powder, hexa, and liquid resol resin is usually needed to achieve such optimization. For increased strength, fiberglass reinforcement inlays are used. These inlays are themselves typically saturated with a special liquid phenolic resin.

Specification:

Properties Value Test standard
Curing time @150°C 90-110s GB/T24411-2009
Flow Distance@125°C 35-45mm GB/T24411-2009
Free-phenol 0.5-1.5% GB/T30773-2014
hexa content 8-10% ZJHM-QESP-01-2015
Water content 0.5-2.0% GB/T2683-2008
Screening 200mesh/0.074mm 99% GB/T24411-2009

Packing&Storage


the package is paper-plastics bag in 25KGS each one
The storage life of this product is several months in a cool and dry place in original closed bags

Product tags

resinoid grinding wheels

,

melamine moulding compound powder

,

phenolic resin for grinding
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Powdered Novolac Phenolic Resin With Hexamine For Grinding Wheels

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Product Detail
Brand Name :
HONINGLITE
Model Number :
P2324
Place of Origin :
CHINA
MOQ :
1000KGS
Price :
Negotiation
Payment Terms :
T/T, L/C, D/P
Contact Supplier
Powdered Novolac Phenolic Resin With Hexamine For Grinding Wheels

Jiaxing Honing Import&Export CO,.LTD

Site Member
8 Years
zhejiang, jiaxing
Since 2014
Business Type :
Manufacturer, Importer, Exporter, Trading Company
Main Products :
Bakelite Phenolic Resin, Novolac Phenolic Resin, Phenol Formaldehyde Resin
Total Annual :
10000000-50000000
Employee Number :
>300
Certification Level :
Site Member
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