UNIGARD™ RE DFDC-1638 BK Datasheet,TP, Unspecified,The Dow Chemical Company-SHANGHAI SUSHENG

Message
No halogen, flame retardant, thermoplastic sheath material UNIGARD™RE DFDC-1638 Black is a halogen-free, high flame retardant grade, thermoplastic, low smoke, low corrosion and low toxicity material. This material is used in the field of universal electric sheath. The sheath made with this product can easily pass the IEEE-383/UL-1685 (limited smoke production test) vertical bracket cable combustion test. Of course, the structure of the cable plays an important role in the flame retardant performance. The maximum operating temperature of cables using this material as a sheath can be as high as 90°C. This product can replace PVC, low-smoke PVC and halogen-containing rubber as sheath materials. It has excellent fire safety (low smoke, low corrosion and low toxicity) and good performance balance. This product can meet or exceed the specifications of many industries for sheath materials: UL-1277 bracket cables, general-purpose communication cables required by UL Subject 444, rail transit applications and various international application fields. As a halogen-free flame retardant sheath material, DFDC-1638 Black can also be used to replace ordinary non-halogen sheath products. Compared with the existing non-halogen sheath products, the extrusion temperature of this product is higher (up to 392 °F [200°C]), and the common single spiral metering PE screw can be used for extrusion processing. Features UNIGARD RE DFDC-1638 Black has the following characteristics: High flame retardancy (IEEE 383 combustion test grade) Environmental protection (lead-free, halogen-free, sulfur-free/antimony-free) low smoke, low corrosiveness and low toxicity Easy extrusion without special screw Excellent cutting resistance, extrusion resistance and wear resistance Good UV resistance, moisture resistance and waterproof performance Has a good balance between toughness and flexibility electrical mark resistance and corrosion resistance

General Information
Uses	Flame Retardant Jacketing Industrial Cable Jacketing LSZH Jacketing Wire and cable applications Communication wire sheath
Agency Ratings	IEEE 383 UL 1277 UL 1685 UL 444
Forms	Particle
Processing Method	Extrusion

Physical	Nominal Value	Unit	Test Method
Density	1.50	g/cm³	ASTM D1505
Mechanical Water Absorption - 7 days (70°C)	14.3	mg/in²	UL 1581

Mechanical	Nominal Value	Unit	Test Method
Taber Abrasion Resistance ¹	1	%	ASTM D1044
Shrinkback - 4 hrs (100°C)	5.3	%	REA 89

Aging	Nominal Value	Unit	Test Method
Tensile strength retention rate			ASTM D638
100°C ²	95	%	ASTM D638
7 days : 121°C	110	%	ASTM D638
Elongation retention rate			ASTM D638
100°C ³	70	%	ASTM D638
7 days : 121°C	63	%	ASTM D638

Thermal	Nominal Value	Unit	Test Method
Thermal deformation			UL 1581
100°C	5.2	%	UL 1581
121°C	49	%	UL 1581

Flammability	Nominal Value	Unit	Test Method
Acid Gas Test			MIL C-24643
Acid by Weight	0.43	%	MIL C-24643
US Navy pH	3.30		MIL C-24643
Toxicity	0.820		NES 713
Acid gas emission pH- International Electrotechnical Comm.	5.20	ppg	IEC 754-2
Acid gas emission conductivity- Conductivity Change		µS/mm	IEC 754-2
Temperature index (combustion)- Critical	> 375	°C	NES 715
Smoke (2.54mm)	12.0		NES 711
Smoke Density			ASTM E662
Flaming Mode - D1.5 : 2.54 mm	0.40		ASTM E662
Flaming Mode - D4.0 : 2.54 mm	2.7		ASTM E662
Flaming Mode - Dm, (corr.) : 2.54 mm	59		ASTM E662
Non-flaming Mode - D1.5 : 2.54 mm	0.70		ASTM E662
Non-flaming Mode - D4.0 : 2.54 mm	21		ASTM E662
Non-flaming Mode - Dm, (corr.) : 2.54 mm	280		ASTM E662

Additional Information	Nominal Value		Test Method
Track and Erosion Resistance	Pass @ 240 hrs		ASTM D2132
Sunlight Resistance	Pass		UL 1581

Physical	Nominal Value	Unit	Test Method
Environmental Stress-Cracking Resistance (10% Igepal)	720	hr	ASTM D1693

Hardness	Nominal Value	Unit	Test Method
Durometer Hardness (Shore A)	88		ASTM D2240

Mechanical	Nominal Value	Unit	Test Method
Tensile Strength	13.8	MPa	ASTM D638
Tensile Elongation (Break)	160	%	ASTM D638
Flexural Modulus - 1% Secant	207	MPa	ASTM D790

Elastomers	Nominal Value	Unit	Test Method
Tear Strength (Split)	6.1	kN/m	ASTM D470

Thermal	Nominal Value	Unit	Test Method
Brittleness Temperature	-20.0	°C	ASTM D746

Electrical	Nominal Value	Unit	Test Method
Volume Resistivity	3.9E+14	ohms·cm	ASTM D257
Dielectric Constant			ASTM D150
60 Hz	3.72		ASTM D150
100 kHz	3.63		ASTM D150
1 MHz	3.56		ASTM D150
Dissipation Factor			ASTM D150
60 Hz	5.0E-3		ASTM D150
100 kHz	7.2E-3		ASTM D150
1 MHz	0.013		ASTM D150

Flammability	Nominal Value	Unit	Test Method
Oxygen Index	40	%	ASTM D2863

Additional Information	Nominal Value		Test Method
Fluid Resistance:Diesel Fuel, MIL-F-16884, 24 hrs, 35°C Extruded tapes (25 mil) or compression-molded plaques, except for these items based on 45 mil/14 AWG (1.63 mm dia.) wires. Tensile Strength Retention: 76% Elongation Retention: 112% Hydraulic Fuel, MIL-H-5606, 24 hrs, 49°C Extruded tapes (25 mil) or compression-molded plaques, except for these items based on 45 mil/14 AWG (1.63 mm dia.) wires. Tensile Strength Retention: 66% Elongation Retention: 98% Hydraulic Fuel, MIL-H-17672, 24 hrs, 49°C Tensile Strength Retention: 72% Elongation Retention: 105% Lubricating Oil, MIL-L-23699, 24 hrs, 49°C Tensile Strength Retention: 80% Elongation Retention: 116% ASTM #2 Oil, 4 hrs, 70°C Tensile Strength Retention: 65% Elongation Retention: 87%

Extrusion instructions
DFDC-1638 Black can be processed on a wide range of commercially available cable fabrication equipment. Generally, it is recommended that a low compression, shallow metering PE screw be used for processing this product. A very low compression (1.1:1 type) screw can be used successfully; however, breakerplate and 20/40 mesh screen pack should be used to generate adequate back-pressure.Based on tests completed on 2.5 inch, 24:1 Davis Standard extruder, the following typical conditions are recommended as a starting point. However, it may be necessary to optimize conditions for a given set of construction, extruder-screw configuration and tooling.Extruder Extruder L/D 20:1 to 24:1 Screw Metering Depths: 2.5 in: 110-130 mil 3.5 in: 140-170 mil 4.5 in: 200-240 mil Compression Ratio 3:1 Temperature Profile Feed Zone: 300°F-325°F (149°C-162°C) Barrel Zone: 380°F-400°F (193°C-204°C) Head/Die Zone: 350°F-360°F (175°C-180°C) Flat temperature profile: 360°F-400°F (180°C-204°C) Draw-Down Ratio (DDR) Core Diameter less than 0.5 in (13 mm) 1:1 to 1.25:1 Core Diameter greater than 0.5 in (13 mm) 2:1 Tooling Semi-pressure tooling improves surface finish. Tube-on tooling: Retract guider-tip slightly into die. Die Short-land tapered die is preferred. Vacuum Though not usually necessary, on occasion, may help obtain a tight jacket and offset any low DDR effect. Air-Gap/Cooling Water Short air gap (such as 6 inches or 150 mm) and ambient water. Pre-Drying Pre-drying at approximately 158°F (70°C) for 4 hours is recommended in commercially available dehumidifying dryers. Do not heat over 195°F (90°C).

Extrusion instructions

DFDC-1638 Black can be processed on a wide range of commercially available cable fabrication equipment. Generally, it is recommended that a low compression, shallow metering PE screw be used for processing this product. A very low compression (1.1:1 type) screw can be used successfully; however, breakerplate and 20/40 mesh screen pack should be used to generate adequate back-pressure.Based on tests completed on 2.5 inch, 24:1 Davis Standard extruder, the following typical conditions are recommended as a starting point. However, it may be necessary to optimize conditions for a given set of construction, extruder-screw configuration and tooling.Extruder Extruder L/D 20:1 to 24:1 Screw Metering Depths: 2.5 in: 110-130 mil 3.5 in: 140-170 mil 4.5 in: 200-240 mil Compression Ratio 3:1 Temperature Profile Feed Zone: 300°F-325°F (149°C-162°C) Barrel Zone: 380°F-400°F (193°C-204°C) Head/Die Zone: 350°F-360°F (175°C-180°C) Flat temperature profile: 360°F-400°F (180°C-204°C) Draw-Down Ratio (DDR) Core Diameter less than 0.5 in (13 mm) 1:1 to 1.25:1 Core Diameter greater than 0.5 in (13 mm) 2:1 Tooling Semi-pressure tooling improves surface finish. Tube-on tooling: Retract guider-tip slightly into die. Die Short-land tapered die is preferred. Vacuum Though not usually necessary, on occasion, may help obtain a tight jacket and offset any low DDR effect. Air-Gap/Cooling Water Short air gap (such as 6 inches or 150 mm) and ambient water. Pre-Drying Pre-drying at approximately 158°F (70°C) for 4 hours is recommended in commercially available dehumidifying dryers. Do not heat over 195°F (90°C).

Note Message
1 .	1000 cycles
2 .	10 days. Based on 0.045 in./14 AWG (1.63 mm dia.) wires.
3 .	10 days. Based on 0.045 in./14 AWG (1.63 mm dia.) wires.

Category:	TP, Unspecified , Non-Halogen, Flame Retardant, Thermoplastic Jacket Compound
Manufacturer:	The Dow Chemical Company
Trademark:	UNIGARD™
Fillers:	-
Ports:	Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms	FOB, CIF, DAP, DAT, DDP
PDF:	glC5Gv_UNIGARD-RE-DFDC-1638-BK.pdf
PRICE:	Order Products email sales@su-jiao.com

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