Unsaturated Polyester Resin

DS-721H

DS-Tianhe Resin Series

Tianhe Dingshi brand DS-721H is a phthalate-type unsaturated polyester resin, with medium viscosity and high reactivity. It has good adhesion to quartz sand, glass sand, etc., high mechanical properties, stain resistance, and excellent high-temperature performance. It is not prone to yellowing and is suitable for making artificial quartz stone slabs.

Liquid Resin Technical Specifications
Item	Unit	Specification	Testing Standard
Appearance		Transparent viscous liquid	Visual
Acid Value	mgKOH/g	17-22	GB2895-82
Viscosity (25℃)	mPa.S	800-1200	GB7193.1-87
Gel Time	min	5-7	GB7193.6-87
Solid Content	%	66-71	GB7193.3-87
80℃ Stability	h	≥24	GB7193.5-87
Note: Gel time is measured by adding 0.5ml of cobalt octoate solution and 0.5ml of MEKP solution to 50g of resin in a 25℃ air bath.

Resin Casting Body Performance Indicators
Item	Unit	Specification	Testing Standard
Barcol Hardness	Barcol	36	GB3854-1983
Tensile Strength	MPa	62	GB2568-1995
Tensile Elastic Modulus	MPa	2800	GB2568-1995
Fracture Elongation	%	6.0	GB2568-1995
Bending Strength	MPa	85	GB2570-1995
Bending Elastic Modulus	MPa	2900	GB2570-1995
Impact Toughness	KJ/m²	10.0	GB2571-1995
Heat Distortion Temperature	℃	60	GB1634-1989

Packaging and Storage

The packaging of Tianhe Dingshi brand DS-721H is a net weight of 220KG metal drum, with a storage period of six months at 20℃. Higher temperatures will shorten the storage period accordingly. It should be stored in a cool, ventilated place, avoiding direct sunlight and keeping away from 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 product performances are fully applicable for a specific purpose and reserves the right to modify the information.

Key words:

721

721-3

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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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