Unsaturated Polyester Resin

DS-851N

DS-Tianhe Resin Series

Tianhe Dianshi brand DS-851N is a general-purpose phthalate-type SMC/BMC unsaturated polyester resin, characterized by slow thickening in the early stage and fast thickening in the later stage, strong rigidity, high mechanical strength, good electrical performance, and good gloss. It is widely used in the fields of automotive pressing, rail transportation, electrical components, construction facilities, and industrial and civilian equipment where high mechanical strength and electrical performance are required for molded products.

Liquid Resin Technical Indicators
Item	Unit	Indicator	Testing Standard
Appearance		Light yellow transparent liquid	Visual
Color (Pt-Co)		40-60	GB7193
Acid Value	mgKOH/g	19-23	GB2895
Viscosity at 25℃	mPa.S	1300-1700	GB7193
Gel Time	min	5-9	GB7193
Solid Content	%	65-68	GB7193
80℃ Stability	h	≥24	GB7193
Note: Gel time is measured at a temperature of 25℃ in an air bath with 50g of resin mixed with 0.75ml of cobalt octoate solution and 0.75ml of MEKP solution.

Resin Casting Body Performance Indicators (for reference only)
Item	Unit	Indicator	Testing Standard
Barcol Hardness	Barcol	40	GB3854
Tensile Strength	MPa	70	GB2567
Tensile Modulus	MPa	3000	GB2567
Break Elongation Rate	%	2.5	GB2567
Bending Strength	MPa	100	GB2567
Bending Modulus	MPa	3500	GB2567
Impact Toughness	KJ/m²	8	GB2567
Heat Distortion Temperature	(℃)	120	GB1634.2
*Note: (1) Casting body sample preparation method: follow GB/T8237-2005; (2) Post-treatment method for casting body: Room temperature/24 hours +40℃/1 hour +90℃/3 hours; (3) Experimental environment temperature: 23±2℃, relative humidity: 50±5%.

*Packaging and Storage*

*The packaging of Tianhe Dianshi brand DS-851N is a net weight of 220KG metal drum. The storage period at a temperature of 20℃ is six months. Higher temperatures will shorten the storage period accordingly. It should be stored in a cool, ventilated place away from 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 product performances are completely applicable to a specific use and reserves the right to modify the information.*

Key words:

808N

854N

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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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