Unsaturated Polyester Resin

DS-281

DS-Tianhe Resin Series

Tianhe Dianshi brand DS-281 is a phthalic type unsaturated polyester resin with low viscosity and high reactivity. It has good wettability, good air-drying properties, fast curing, high hardness, and is suitable for hand lay-up molding. It is used for surface coating and reinforcement of marble to prevent cracking during cutting.

Liquid Resin Technical Specifications
Item	Unit	Indicator	Testing Standard
Appearance		Transparent viscous liquid
Color (Pt-Co)			GB7193.7
Acid Value	mgKOH/g	22-28	GB2895
Viscosity at 25℃	mPa.S	300-500	GB7193.1
Gel Time	min	3-10	GB7193.6
Solid Content	%	62-64	GB7193.3
80℃ Stability	h	≥24	GB7193.5
Note: Gel time is measured at a temperature of 25℃ in an air bath with 50g of resin, adding 0.4ml of cobalt octoate solution and 0.4ml of MEKP solution.

Resin Casting Body Performance Indicators (for reference only)
Item	Unit	Indicator	Testing Standard
Barcol Hardness	Barcol	45	GB3854
Tensile Strength	MPa	65	GB2568
Tensile Modulus	MPa	2500	GB2568
Elongation at Break	%	3	GB2568
Flexural Strength	MPa	85	GB2570
Flexural Modulus	MPa	3000	GB2570
Impact Toughness	KJ/m²	6	GB2571
Heat Distortion Temperature	℃	75	GB1634
Note: Experimental environment temperature is 23±2℃ with relative humidity of 50±5%

Packaging and Storage

The packaging of Tianhe Dianshi brand DS-281 is a metal drum with a net weight of 220KG. The storage period at 20℃ is six months. Higher temperatures will shorten the storage period accordingly. It should be stored in a cool, ventilated place, avoiding direct sunlight and heat sources. This product is flammable and should be kept away from open flames.

Note: This data is determined according to national standards (GB). Due to various factors affecting the processing process, it does not exclude the necessity for users to conduct their own experimental research. Legally, it does not guarantee that certain performance characteristics of the product are fully applicable to any specific use, and reserves the right to modify the information.

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Shanghai Xintianhe Resin Co., Ltd.

Address: Room 502, Building 23, Science and Technology Oasis, 1999 Yishan Road, Minhang District, Shanghai

National unified hotline: 400-820-9698

Telephone: 86-21-57485068 / +86 13917508287 (Sales Department)

E-mail: service@chinaresins.com

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