Unsaturated Polyester Resin ZC-257 Orthophthalic Resin

Chemical/Physical Nature

ZC-257 resin is a meta benzene unsaturated polyester resin mainly made of meta benzene, maleic anhydride, and standard diols. It has been dissolved in crosslinking monomers such as styrene and has low viscosity and moderate reactivity.

Benefits and Application

ZC-257 resin has low viscosity, and the resin dosage can be reduced by 4-8% during application. After curing, it has high strength, good toughness, and excellent properties such as hardness and brightness. Suitable for medium temperature curing high-performance quartz stone.

Liquid Resin Typical Properties

Unfilled Castings Typical Properties

Application Guidelines

1. ZC-257 resin does not contain wax, accelerators, or thixotropic additives.
2. ZC-257 resin is suitable for medium temperature curing. Medium temperature curing is more conducive to production control and product performance assurance. Recommended medium temperature curing system: tert butyl peroxyoctanoate TBPO (content ≥ 97%), 1% resin content; Curing temperature: 80 ± 5 ° C for at least 2.5 hours. Recommended coupling agent: gamma methacryloyloxypropyltrimethoxysilane KH-570, 2% resin content.
3. ZC-257 resin has low viscosity, which makes the resin more economical and has better performance.
4. During the production process of the product, after heating and curing, it should be steadily cooled to room temperature to avoid rapid cooling and prevent product deformation or cracking, especially in winter. The cutting and polishing of quartz stone during the production process should be carried out after sufficient solidification.
5. Moisture absorption of fillers should be avoided, as excessive moisture content can affect the curing of the product and lead to a decrease in performance.

Package

Net weight is 220 kg, metal barrel.Please contact us for special packaging requirements.