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TPU's river lake status
- Categories:Industry news
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- Time of issue:2020-07-13 15:22
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(Summary description)
TPU's river lake status
(Summary description)
- Categories:Industry news
- Author:
- Origin:
- Time of issue:2020-07-13 15:22
- Views:
TPU's river lake status
High tensile strength and elongation
High aging resistance
High resistance to wear
High chemical resistance
Downstream classification of TPU
In the long history, the downstream application of TPU has gradually formed a mature team and school, whose main territories include shoe material, film, pipe material, medical treatment, electronics and other fields. Among the high-end market applications, medical supplies, functional films, electronic supplies and other applications occupy a place and become more and more powerful.
According to the product structure, TPU is divided into aromatic group and aliphate group, with different origins and different division of labor in natural applications. Aliphate is mostly used in the high and low end of the market, of which only a small part is functional film application in the high-end market, but its super protective effect covers all aspects of life.
上图为应用
Thin films are memorized
--What happens in the process of going from particle to membrane?
The main processing methods of TPU film include blowing film, streaming film, coating and calendering. Among them, the TPU film processing by blowing film and fluidizing film is the most common. The method of flow extension is used, that is, "TPU particles are extruded and melted in the material barrel of the extruder, and extruded between two rollers through a flat die head, and at the same time, the base material is drawn into the space between the molten plasticized material and the rubber pressure roller. Control the pressure of the pressure roller to fit the plasticized TPU material with the base material. After the hot adhesive cloth is cooled by the metal roller, the edge is cut, the coil is taken up, and the applied product is processed and formed once.
Top 10 TPU film attainments
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hardness |
The higher the hardness grade of TPU film, the higher the puncture resistance and wear resistance. The hardness level is low, the product shows a very smooth texture and a very soft feel. |
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The wear resistance of TPU thin films is superior to that of many other common polymers. More than the natural rubber wear-resisting five times, is one of the preferred materials of wear-resisting products |
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stretchability |
TPU thin film tensile strength up to 70MPa, breaking elongation up to 800%, one of the most impressive properties is its tensile ability. |
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The weathering resistance of TPU film is better than that of natural rubber and other synthetic rubber. |
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TPU thin film has excellent low temperature flexibility. Most films remain flexible even when exposed to temperatures as low as -30 ° C, making them ideal for a harsh environment. |
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Good temperature resistance |
TPU film temperature resistance up to 130 degrees Celsius, polyether series temperature resistance up to 90 degrees Celsius. |
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Oil and chemical resistance |
TPU is a kind of strong polar polymer material, which has little affinity with non-polar mineral oil and is almost impermeable to erosion in fuel oil and mechanical oil. Among the TPU products, polyester series products have better oil resistance. |
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TPU film has excellent biocompatibility, non-toxic, no allergic reaction, no local irritation, no heat source. |
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TPU film will not produce air pollution when burning, and can be biodegradable in soil for 3-5 years. It is reported that polyester series will be completely hydrolyzed after soaking in water of 50 ° C for half a year or 70 ° C for 3 weeks or 100 ° C for 3-4 days. |
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Broad applicability |
TPU thin films can be vacuum or hot-machined and still retain their flexibility and performance. The material can also be welded into irregular shapes. |
【END】
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