Overview
ZC-189 is an unsaturated polyester resin built from phthalic anhydride, maleic anhydride, and standard glycol, dissolved in the styrene cross-linking monomer, part of the Polylite product line in our resin range. It has medium viscosity and medium reactivity, offers good strength and rigidity with fast post-curing, and is supplied with supply chain resource support for formulators sourcing an unsaturated polyester resin for waterproof FRP applications.
Specification
| Appearance | Light yellow transparent viscous liquid |
| Acid Value | 19-25 mgKOH/g (GB/T 2895-2008) |
| Viscosity, 25℃ | 0.30-0.60 Pa.s (GB/T 7193-2008) |
| Solid Content | 59-66% (GB/T 7193-2008) |
| Thermal Stability, 80℃ | ≥24 h (GB/T 7193-2008) |
| Gel Time | 12-30 min (GB/T 7193-2008) |
Applications of ZC-189 in Waterproof FRP Products
This resin meets the certification requirements of China Classification Society (CCS), making it a candidate for hand lay-up processes producing common waterproof FRP products such as inland river FRP ships, automobile parts, cooling towers, and water tanks. Its medium viscosity and gel time window give formulators a workable process for wet-out and lamination in these applications.
Why the CCS-Aligned Chemistry Matters
Because this resin is built from phthalic anhydride, maleic anhydride, and standard glycol and meets CCS certification requirements, it is formulated to deliver good strength and rigidity along with fast post-curing for waterproof structural applications. The acid value range of 19-25 mgKOH/g and solid content of 59-66% give formulators reference points for evaluating batch-to-batch consistency before scaling a lamination run.
Why Sourcing Consistency Matters for Buyers
Because viscosity, gel time, and thermal stability directly affect processability and finished-part quality, buyers should confirm current specifications for this resin against the latest technical data sheet before scheduling a production run. A supplier that consistently delivers this resin within its stated viscosity and gel time range reduces the need to re-qualify a hand lay-up recipe with every new batch.
This is particularly relevant for boat builders and tank or cooling tower manufacturers seeking CCS-aligned materials, where gel time and thermal stability are directly tied to lamination throughput and part durability. Buyers should confirm current batch documentation against the latest technical data sheet before finalizing a production schedule.
What to Consider When Sourcing ZC-189
Buyers evaluating ZC-189 for the first time should confirm that its gel time (12-30 min) and thermal stability (≥24 h at 80℃) match their lamination line’s cycle time and process temperature requirements, and should review the CCS certification documentation relevant to their application. Requesting the current certificate of analysis alongside the technical data sheet is a practical way to confirm that a given batch matches the specifications listed above.
Packaging, storage temperature requirements, and shelf life should also be confirmed directly with the supplier, since these factors affect how this resin performs once it reaches a production facility. Buyers sourcing this resin for time-sensitive production schedules should discuss lead time and logistics requirements before finalizing an order.
General Handling and Storage Guidance
As with other unsaturated polyester resins, this product should be stored in accordance with the supplier’s technical data sheet, typically in a cool, well-ventilated area away from direct sunlight and sources of heat or ignition, since elevated storage temperatures can affect the resin’s viscosity and gel characteristics over time. Personnel handling this material should follow the handling procedures specified in the safety data sheet.
Buyers should request and review the current safety data sheet for this resin prior to receipt, and confirm that on-site storage conditions are compatible with the supplier’s recommended shelf life and temperature range. Proper inventory rotation helps maintain the viscosity and mechanical performance described above.
Where to Source This Product
Thousands Chemicals supplies ZC-189 and related resin products through our digital B2B marketplace, with supply chain resource support for formulators sourcing unsaturated polyester resins for boat building, automotive parts, and waterproof tank and cooling tower manufacturing. Material testing methods referenced for this resin, including acid value, viscosity, solid content, and thermal stability, are benchmarked against recognized international testing practices published by ASTM International. Our team can help confirm packaging, lead times, and technical documentation for your target application and order volume.
Documentation We Can Provide
For qualified buyers, we can provide the safety data sheet and technical data sheet for the specific batch of this resin being quoted. Specifications listed on this page reflect the manufacturer’s published values; buyers should confirm current documentation before finalizing a purchase order.
FAQ
What is ZC-189 used for?
It is an unsaturated polyester resin used in hand lay-up processes for waterproof FRP products, including inland river FRP ships, automobile parts, cooling towers, and water tanks, and it meets CCS certification requirements.
What is the viscosity of ZC-189?
ZC-189 has a viscosity of 0.30-0.60 Pa.s at 25℃ (GB/T 7193-2008).
What is the gel time of ZC-189?
ZC-189 has a gel time of 12-30 minutes (GB/T 7193-2008).
Can you provide technical documentation and bulk pricing for ZC-189?
Yes, technical data sheets and SDS documentation are available on request, and our team can provide bulk pricing and lead times based on your target volume and delivery location.
Get a Quote for ZC-189
Contact our team for pricing, documentation, and lead time on ZC-189. Our sourcing specialists can help confirm whether this unsaturated polyester resin matches your process requirements before you place an order.
