Wear resistant type thermoplastic polyurethane elastomer and preparation method thereof

A technology of thermoplastic polyurethane and elastomer, which is applied in the direction of mechanical equipment, pipes, hoses, etc., can solve the problems such as the influence, loss, and scrapping of hose coils in the reel space, and achieve improved anti-scratch performance, low cost, and The effect of improving the wear resistance

Inactive Publication Date: 2014-11-19
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Once the hose is worn out, there will be leakage, and since the TPU hose needs to be coiled during storage, after the hose is scratched, it is necessary to disconnect the scratched part and connect it with a joint for emergency use. The space of the hose and the neatness of the hose coil have a great influence. In severe cases, the whole hose may even be scrapped, causing huge losses.

Method used

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  • Wear resistant type thermoplastic polyurethane elastomer and preparation method thereof

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Embodiment 1

[0024] The wear-resistant thermoplastic polyurethane elastomer of the present invention is composed of the following mass percentages: thermoplastic polyurethane elastomer (TPU): 91.6%; EPDM: 5%; carbon black masterbatch: 3% ; Antioxidant: 0.2%; UV absorber: 0.2%. Among them, the density of EPDM is 0.88 g / cc (ASTM D 297), and the Mooney viscosity is 45 (ML 1+4125°C).

Embodiment 2

[0026] The wear-resistant thermoplastic polyurethane elastomer of the present invention is composed of the following mass percentages: Thermoplastic polyurethane elastomer (TPU): 87%; EPDM: 10%; carbon black masterbatch: 2.5% ; Antioxidant: 0.3%; UV absorber: 0.2%. Among them, the density of EPDM is 0.88 g / cc (ASTM D 297), and the Mooney viscosity is 45 (ML 1+4125°C).

Embodiment 3

[0028] The wear-resistant thermoplastic polyurethane elastomer of the present invention is composed of the following mass percentages: Thermoplastic polyurethane elastomer (TPU): 80.4%; EPDM: 15%; carbon black masterbatch: 4% ; Antioxidant: 0.4%; UV absorber: 0.2%. Among them, the density of EPDM is 0.88 g / cc (ASTM D 297), and the Mooney viscosity is 45 (ML 1+4125°C).

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Abstract

The invention discloses a wear resistant type thermoplastic polyurethane elastomer and a preparation method, the polyurethane elastomer comprises the following substances by mass percentage: 71-91.6% of thermoplastic polyurethane elastomer (TPU), 5-20% of terpolymer EP rubber (EPDM), 3-8% of carbon black master batch, 0.2-0.5% of anti-oxidant and 0.2-0.5% of ultraviolet ray absorber. The method employs a proper proportion of EPDM for physical modification on the thermoplastic polyurethane elastomer, the wear resistance of the thermoplastic polyurethane elastomer is increased by 2-3 times, rub-resistance performance of a TPU flexible pipe is improved, modified material hardness is little changed, the original extrusion moulding technology of the flexible pipe is satisfied, service life of the TPU flexible pipe is prolonged, and the cost is simultaneously reduced.

Description

Technical field [0001] The invention relates to a thermoplastic elastomer material, in particular to a wear-resistant thermoplastic polyurethane elastomer and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane elastomer (TPU) is a new type of polymer material with excellent wear resistance and high elasticity. The oil and water pipes currently used in the field are all TPU hoses. The TPU hose is composed of an inner coating, a fiber fabric reinforcement layer and an outer coating. The inner and outer coatings are made of the same TPU material, the reinforcement layer skeleton is made of polyester silk material, and the inner and outer coating materials are made of a single screw extruder. It is coated on the inner and outer walls of the skeleton by one-time extrusion and two-sided molding process, and then the TPU hose molding process is completed by auxiliary machines such as cooling, traction, and coiling. The hose is lighter than rubber ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L23/16C08K3/04F16L11/04
Inventor 谭晶丁玉梅杨卫民安瑛
Owner BEIJING UNIV OF CHEM TECH
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