Engineering Grade

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Dòng ISOTHANE 8000 - High Performance Engineering Grade

Tên Hạng mục	Dòng ISOTHANE 8000 - High Performance Engineering Grade
Đặc tính sản phẩm	ISOTHANE®8000 series products are polyether based engineering thermoplastic polyurethanes. They exhibit excellent tensile and flexural strength, toughness, abrasive resistance, good fatigue resistance, solvent resistance, and maintenance of good physical properties under UV exposure ISOTHANE®8000 series can be injection molded and extruded.
Trường hợp sử dụng	Electronics, Automotive, Power Tools, Oil-Water Separator, Optics Products.

Item Name	High Performance Engineering Grade
Description	ISOTHANE 8000 series products are engineering thermoplastic polyurethanes. They exhibit excellent tensile and flexural strength, toughness, abrasive resistance, good fatigue resistance, solvent resistance, and maintenance of good physical properties under UV exposure. The product can be injection molded and extruded.
Supply and Storage	ISOTHANE TPU resins are supplied in pellet form packed in 25kg moisture proof bags. All TPU resins have been dried before packing. ISOTHANE TPU resins should be stored in cool and dry environment in their original containers until be used. Storage temperature should not exceed 30°C. If only a portion of TPU resins was used from a bag, the remainder of TPU resins should be tightly closed.
Drying	TPU resins are hygroscopic and pre-drying of TPU resins is always a necessary step before processing. Depend on the climate, the granule exposed to the atmosphere will absorb moisture very quickly. The moisture might bring about partial degradation of polymers and the formation of bubbles or streaks in the molded and extruded parts. In order to ensure the efficient and successful processing into quality parts, the moisture content in TPU resins is recommended less than 0.02%. A desiccant-bed-type hopper dryer is recommended for drying ISOTHANE TPU. The dew point of the inlet air should be in the range of -30 to -40°C. About the recommended drying conditions, please view ISOTHANE individual data sheets.
Processing - Extrusion	Barrel and Motor High torque drive capacity at low speed Vented or standard barrels acceptable Screw Compression ratios between 2:1 and 3:1 Minimum L/D of 30/1 Feed Throat Vertical and tangential Water cooling is recommended Screen Pack Streamlined breaker plates with screen packing is recommended Typical 40/80/80/40 mesh screens Die Streamline with good temperature control Land Length is generally 10 to 15 times the part thickness Coat-hanger manifold-type dies are recommended for extruding film and sheet Crosshead dies are recommended for wire, cable and hose jacketing Side-fed rotating dies are recommended for blown film About the recommended extrusion temperatures, please view ISOTHANE individual data sheets.
Processing - Injection Molding	Barrel and Motor High torque drive capacity at low speed Vented or standard barrels acceptable Screw Compression ratios between 2:1 and 3:1 Metering screw with gradual transition zone Injection Pressure Typical 6,000 to 15,000 psi Hold pressure 60 – 70% of forward time Injection speed Slow to moderate Depends on gating, wall section and flow length About the recommended injection molding temperatures, please view ISOTHANE individual data sheets.
Coloring	Generally, ISOTHANE TPU resins are supplied in their natural color. They can be colored by blending with pigment or pigment master batch. Using master batch based on TPU is recommended. Other master batch based on polyethylene or polystyrene is suitable to a limited extent. All colorants employed in TPU resins must be pre-dried before processing. The normal addition of pigment or pigment master batch is 0.2%-0.5% or 1-3%.
Additives	Various additives can be used to enhanced the properties of ISOTHANE TPU resins, e.g. anti-blocking agents, antioxidant, UV stabilizers or release agents. Most additives supplied as master batches are available. But not all additives are compatible with ISOTHANE TPU resins. It is recommended to inquire of your suppliers or our technical service before compounding.
Recycling	For ISOTHANE TPU resins, up to 20% of regrind may be recycled with virgin material depending on finished parts requirements. The regrind material has to be kept free of contamination, diced and dried before re-using. The material which has been contaminated, discolored or degraded is not suitable for recycling. TPU resins may decrease desired properties, e.g. hardness and mechanical properties, due to improperly mixing with regrind. Regulatory or testing organizations (e.g., UL) may have specific requirements limiting the allowance amount of regrind. Certain quality requirements laid down in specifications may exclude the use of regrind material.
Healthy and Safety Information	Before working with these products, it is essential that all operators are aware of the healthy and safety precautions. ISOTHANE TPU resins can be processed or machined over a wide range of temperature. There can be some smoke formation during processing. The smoke that contains some decomposition substances of TPU or additives may cause irritation to human body. Generally, the temperature does not exceed 240°C that can reduce decomposition formation. An effective extraction system, especially in the melt outlet zone, is necessary. The detail information concerning healthy and safety can be available in safety data sheets (SDS) or contact our technical service.
Disposal	ISOTHANE TPU resins present no hazard to the environment or water. They can be dumped on municipal landfill or in a waste incineration plant. The official regulations on waste disposal should be observed.

Hạng mục	Units	ASTM	8101	8201	8301	8306	8102	8303	8309
Tỷ trọng		D-792	1.20	1.19	1.20	1.20	1.18	1.20	1.20
Độ cứng	Shore D	D-2240	80D	81D	85D	80D	76D	78D	83D
Độ mạnh kháng kéo	MPa psi	D-638	75 11,000	83 12,000	90 13,000	68 10,000	60 8,700	67 9,700	78 11,400
Tỷ lệ kéo dài	MPa psi	D-638	1,480 214,000	1,570 228,000	1,880 258,000	1,280 186,000	1,080 156,000	1,350 196,000	1,700 242,000
Tỷ lệ kéo dài bị đứt	%	D-638	125	40	40	193	150	92	34
Độ bền uốn	MPa psi	D-790	95 13,800	108 15,600	110 16,000	88 12,800	74 10,800	91 13,100	100 14,500
Mô đun uốn lượn	MPa psi	D-790	1,730 250,000	1,850 268,000	2,000 290,000	1,630 236,000	1,370 198,000	1,580 229,000	1,730 250,000
Sức mạnh tác động Notched, 1/4 in., 23°C	J/m ft-lb/in	D-256	117 2.2	108 2	113 2.1	108 2	1,060 20	646 12	356 6.6
Nhiệt độ biến dạng nhiệt Temperature HDT/B (0.46 MPa)	°C °F	D-648	93 199	105 221	132 270	65 149	90 194	110 230	127 261
Nhiệt độ làm mềm Vicat	°C °F	D-1525	100 212	112 233	142 288	77 170	98 208	129 264	139 282
Giao diện	-	-	Transparent	Transparent	Transparent	Transparent	Opaque	Opaque	Opaque

These property values under specific test conditions as defined in the table above are for reference only.

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