HS-2250 Unsaturated Polyester Resin
- Characteristics and main uses:
HS-2250 is an unsaturated polyester resin specially designed for polyester concrete. It has low viscosity, low shrinkage, good wettability with fillers to maintain a high filler rate, low volatilisation of styrene to improve the working environment, excellent workability, good air-drying property, which prevents sticking on the surface of the moulded products in a short time and forms a glossy and smooth surface. It is suitable for the production of large-scale products.
- Specifications of liquid resin:
| Item |
Unit |
Standard Requirements |
Test Method |
| Appearance |
-- |
yellow transparent liquid |
GB/T 8237.6.1.1 |
| Viscosity |
25ºC, cP |
130-170 |
GB/T 7193.4.1 |
| Gel Time |
25ºC, min. |
5.0-13.0 |
GB/T 7193.4.6 |
The curing system for testing the gel time was: accelerator 6% Co/Naph: 1%; curing agent AKZO M-50: 2%.
- Physical properties of Casting(for reference only):
| Item |
Unit |
Test Value |
Test Method |
| Tensile strength |
MPa |
41 |
GB/T2568 |
| Tensile modulus |
MPa |
2949 |
GB/T2568 |
| Elongation at break |
% |
1.53 |
GB/T2568 |
| Bending strength |
MPa |
61 |
GB/T2570 |
| Bending modulus |
MPa |
3121 |
GB/T2570 |
| Impact toughness |
KJ/m2 |
3.24 |
GB/T2571 |
| Bacall hardness |
-- |
40 |
GB/T3854 |
| Heat distortion temperature |
ºC |
62 |
GB/T1634 |
Note:
1) Pouring method is according to GB/T8237-2005. Curing system: accelerator HS-909 1.5%, AKZO M-50: 1.5%;
2) Curing system after casting body: Normal temperature (24 h) + 60°C (3 h) + 100°C (2 h).
- Refer to the recipe for use:
parts by weight
HS-2250 resin 100parts
Accelerator HS-995 2parts
Curing agent (methyl ethyl ketone peroxide MEKPO) 1-2 parts (dosage depends on temperature)
Calcium carbonate / silica sand and other fillers 600parts
- Attention:
- When the temperature of construction environment is high, the gel time is short, at this time, you can not arbitrarily reduce the amount of curing agent, but should reduce the amount of accelerator.
- Because of the low shrinkage rate of the resin, in order to prevent the mould release difficulty, so it is recommended to use polyvinyl alcohol or fluorine type mould release agent.
- Transportation should be in accordance with the State Council 'Regulations on the Safe Management of Chemical Dangerous Goods', Chapter V of the transport and handling of chemical dangerous goods. The product should be stored in a cool place under 25ºC, avoid fire, isolate the heat source (such as direct sunlight or steam, etc.), and keep the barrel sealed to prevent moisture intrusion and volatilisation of the monomer.The shelf life is 3 months when stored under 25ºC.
Packaging & Shipping
Application
Certifications
FAQ
Q: Is Your Company a Manufacturer?
A: Yes, indeed.We have 48,800 square meters factory located in Jiangsu Province, China.
Q: Can I Request a Sample of Unsaturated Polyester Resin?
A: Yes,we can provide 1kg of resin as a free sample, but freight are typically the responsibility of the buyer.
Q: Do you have OEM/ODM service?
A: Yes, we are highly flexible in offering OEM/ODM services.
Q: Can I Customize the Formulation of Unsaturated Polyester Resin for My Project?
A: Yes, absolutely. We understand that different projects may have unique requirements. Our R & D department is well-equipped to handle custom formulations based on your specific needs. You can provide us with the details of your project, including any specific characteristics or performance criteria you are looking for, and our experts will work on tailoring a formulation that meets your requirements.
Q: How Do I Choose the Right Unsaturated Polyester Resin for My Application?
A: We would provide guidance on selecting the appropriate UPR based on different project requirements.
Q: What Certifications and Quality Standards Does Your Unsaturated Polyester Resin Meet?
A: Our Unsaturated Polyester Resin meets CCS, RoHS, REACH, EMS, and QMS certifications and quality standards.
Q: What is Your Company's International Transportation Form?
A: For samples, we offer Delivery Duty Paid (DDP) services for most of the countries. This means that we handle the delivery process, including the payment of taxes, and you won't be required to manage customs clearance. For bulk orders, we normally transported by sea or land. Our commitment is to ensure the secure and efficient delivery of our products to your specified destination.
Q: What is The Product Lead Time?
A: 15 days.
Q:Can I Get a Lower Price for a Large Quantity Order ?
A: Absolutely. The online price serves as a reference, but due to fluctuations in raw material costs, our sales team can provide you with the most accurate and competitive pricing. Before making a purchase, kindly engage with our sales representatives. They will work closely with you, taking into account your order quantity and specific requirements, to ensure you receive the best and most cost-effective pricing tailored to your needs.
Q:What's Shelf Life of Unsaturated Polyester Resin ?
A: Normally 6 months.
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