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PF

phenolic resin, It is called PF for short. The solid phenolic resin is a yellow, transparent, amorphous block material, which is reddish due to the presence of free phenol. The average specific gravity of the solid is about 1.7. It is easily soluble in alcohol, insoluble in water, and stable to water, weak acid, and weak alkali solutions. The resin is prepared by condensation polymerization of phenol and formaldehyde under the condition of catalyst, neutralization and water washing. Due to different catalysts, they can be divided into thermosetting and thermoplastic.

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1. PF classification

2. Common applications of PF

Phenolic resin has good acid resistance, mechanical properties and heat resistance, and is widely used in anti-corrosion engineering, adhesives, flame retardant materials, grinding wheel manufacturing and other industries.

3. PF development history

Liquid phenolic resin is yellow and dark brown liquid. For example, alkaline phenolic resin is mainly used as casting binder. CAS No. 9003-35-4 Application: used as tackifying resin of neoprene adhesive, vulcanizing agent of butyl rubber, etc. [1] Upstream raw materials: p-tert-butylphenol, formaldehyde Downstream products: phenolic molding compound, phenolic molding compound (PF2C3-631), phenolic granular injection compound (SP2501J), [2] rosin modified phenolic resin (2118 type) PET modified phenolic resin, phenolic asbestos friction resistant plastic, phenolic asbestos abrasion resistant plastic (JL24-66), phenolic asbestos acid resistant plastic, phenolic glass fiber molding compound, polyphenylene sulfide, phenolic foam plastic plate (FD-20 type), phenolic glass fiber reinforced plastic, phenolic plastic bearing shell, carrier roller for conveyor, etc.

4. PF business opportunity

Supply K220PF
PF Bakelite
Supply PF2D54
Shanghai Kaizhong Pneumatic Diaphragm
Supply 14.178
Supply anti-static PF board
Supply grain harvester fluid
Chengdu Peligo PF Color
3RG4011-
18W LED daylight

5. PF brand

6. PF News

Study on PF Reaction Mechanism (III) Ammonia Catalysis 6

The experimental results show that the best reaction effect can be obtained by adding 20% triphenylphosphine catalyst at 120 ℃ for 120 min; The infrared spectrum further confirmed the degree of reaction between DOPO and o-cresol formaldehyde epoxy resin and [Detailed]
Function Introduction of Rare Earth PF Modified Coatings

Phenolic modified epoxy powder coating, due to the copolymerization and cross-linking reaction of the two resins, increases the cross-linking density of the system, improves the medium penetration resistance of the coating film, especially the acid resistance, water resistance and organic solvent resistance [Detailed]