Aliphatic Grade

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Dòng ISOTHANE 7000 - Aliphatic Grade

Tên Hạng mục	Aliphatic Grade
Đặc tính sản phẩm	ISOTHANE® 7000 series products are aliphatic grade thermoplastic polyurethane having high elasticity and transparency. They exhibit excellent mechanical properties, abrasion resistance, hydrolysis resistance and no yellowing on exposure to UV light. ISOTHANE® 7000 series can be processed by extrusion and injection molding.
Trường hợp sử dụng	Automotive Protective Films and Smart Wearable Devices

Item Name	Aliphatic Grade
Description	ISOTHANE 7000 series products are aliphatic grade thermoplastic polyurethane having high elasticity and transparency. They exhibit excellent mechanical properties, abrasion resistance, hydrolysis resistance and no yellowing on exposure to UV light. ISOTHANE 7000 series can be processed by extrusion and injection molding.
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	Polyester TPU			Polycaprolactone TPU
Hạng mục	Units	ASTM	7185A	7190A	7195A	7285A	7290A-E
Độ cứng		D-792	1.16	1.16	1.18	1.12	1.11
Độ mạnh kháng kéo	Shore A	D-2240	85A	90A	95A	85A	90A
Tỷ lệ kéo dài	MPa psi	D-412	27 3930	33 4790	44 6380	23 3780	23 3340
@ 50% số lượng màng kháng kéo	MPa psi		7 1020	7 1020	14 2030	5 725	6 870
@ 100% số lượng màng kháng kéo	MPa psi		9 1310	11 1600	15 2180	7 1020	7 1020
@ 300% số lượng màng kháng kéo	MPa psi		19 2780	21 3050	24 3490	13 1890	17 2470
Tỷ lệ kéo dài bị đứt	%		600	550	500	650	450
Độ cứng xé rách	N/mm lb/in	D-624 DIE C	165 925	180 1010	220 1240	135 760	120 675

Hạng mục	Units	ASTM	Polyether TPU
Hạng mục	Units	ASTM	7380A-E	7385A	7385A-E	7390A-E
Độ cứng		D-792	1.08	1.04	1.08	1.08
Độ mạnh kháng kéo	Shore A	D-2240	80A	85A	85A	90A
Tỷ lệ kéo dài	MPa psi	D-412	42 6090	31 4500	43 6090	45 6530
@ 50% số lượng màng kháng kéo	MPa psi		5 725	5 725	6 870	8 1160
@ 100% số lượng màng kháng kéo	MPa psi		8 1160	6 870	9 1310	10 1450
@ 300% số lượng màng kháng kéo	MPa psi		31 4500	10 1450	35 5080	39 5660
Tỷ lệ kéo dài bị đứt	%		400	700	400	430
Độ cứng xé rách	N/mm lb/in	D-624 DIE C	110 620	140 785	115 645	120 675

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

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