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TPU(Thermoplastic polyurethanes)名稱為熱塑性聚氨酯彈性體橡膠。主要分為聚酯型和聚醚型，它硬度范圍寬（60HA-85HD）、耐磨、耐油，透明，彈性好，在日用品、體育用品、玩具、裝飾材料等優(yōu)先域得到廣泛應用，無鹵阻燃TPU還可以代替軟質PVC以滿足越來越多優(yōu)先域的環(huán)保要求。
密度：聚醚型TPU密度在1.1左右，聚酯型密度更大點在1.2左右；具體密度各個品牌牌號略有區(qū)別。
聚醚型(Ether):高強度、耐水解和高回彈性，低溫性能好。價格和彈性。聚醚型的相對彈性好一些，價格也貴一些。
聚酯型(Ester):較好的拉伸性能、撓曲性能、耐摩損性以及耐溶劑性能和耐較高溫度。
從對比來看：
抗拉強度聚酯系>聚醚系
撕裂強度聚酯系>聚醚系
耐磨耗性聚酯系>聚醚系
耐藥品性聚酯系>聚醚系
透明性 聚酯系>聚醚系
耐菌性 聚酯系<聚醚系
濕氣蒸發(fā)性聚酯系<聚醚系
低溫沖擊性聚酯系<聚醚系
要區(qū)分可以從以下幾點：
1、價格，相對來說聚醚的比聚酯貴一點。這個是針對新料，副牌或再生料什么的除外。
2、物性表上都會有詳細參數和應用，一般也很好區(qū)分出來。
3、比重，聚醚TPU的比重比聚酯型的要高。聚醚一般是1.2左右，聚酯一般是1.1左右。當然，不同廠家不同型號也有要詳細討論了。
4、應用，聚酯就是耐油耐高溫，聚醚就是耐油耐低溫。從產品的應用也可以看出來原料是聚酯還是聚醚了。
TPU (thermoplastic polyurethanes) is named thermoplastic polyurethane elastomer rubber. It is mainly divided into polyester type and polyether type. It has wide hardness range (60ha-85hd), wear resistance, oil resistance, transparency and good elasticity. It is widely used in daily necessities, sporting goods, toys, decorative materials and other fields. Halogen-free flame-retardant TPU can also replace soft PVC to meet more and more environmental requirements.
Density: the density of polyether TPU is about 1.1, and that of polyester is about 1.2; the specific density of each brand is slightly different.
Polyether: high strength, hydrolysis resistance, high resilience, good low temperature performance. Price and flexibility. Polyether is more flexible and expensive.
Polyester type (ester): good tensile properties, flexural properties, abrasion resistance, solvent resistance and high temperature resistance.
In comparison:
Tensile strength polyester system > polyether system
Tear strength polyester series > polyether series
Wear resistant polyester system > polyether system
Resistant polyester series > polyether series
Transparent polyester system > polyether system
Bacterial resistant polyester system < polyether system
Moisture evaporation polyester system < polyether system
Low temperature impact polyester system < polyether system
The following points can be distinguished:
1. The price of polyether is higher than that of polyester. This is for new materials, except for sub brand or recycled materials.
2. There are detailed parameters and applications on the physical property table, which are generally well distinguished.
3. The specific gravity of polyether TPU is higher than that of polyester type. Polyether is generally about 1.2, polyester is generally about 1.1. Of course, different manufacturers and models also need to be discussed in detail.
4. Application, polyester is resistant to oil and high temperature, polyether is resistant to oil and low temperature. From the application of the product, we can see whether the raw material is polyester or polyether.
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