TPU(Thermoplastic polyurethanes)名称为热塑性聚氨酯弹性体橡胶。主要分为聚酯型和聚醚型，它硬度范围宽（60HA-85HD）、耐磨、耐油，透明，弹性好，在日用品、体育用品、玩具、装饰材料等优先域得到广泛应用，无卤阻燃TPU还可以代替软质PVC以满足越来越多优先域的环保要求。

　　密度：聚醚型TPU密度在1.1左右，聚酯型密度更大点在1.2左右；具体密度各个品牌牌号略有区别。

　　聚醚型(Ether):高强度、耐水解和高回弹性，低温性能好。价格和弹性。聚醚型的相对弹性好一些，价格也贵一些。

　　聚酯型(Ester):较好的拉伸性能、挠曲性能、耐摩损性以及耐溶剂性能和耐较高温度。

　　从对比来看：

　　抗拉强度聚酯系>聚醚系

　　撕裂强度聚酯系>聚醚系

　　耐磨耗性聚酯系>聚醚系

　　耐药品性聚酯系>聚醚系

　　透明性 聚酯系>聚醚系

　　耐菌性 聚酯系<聚醚系

　　湿气蒸发性聚酯系<聚醚系

　　低温冲击性聚酯系<聚醚系

　　要区分可以从以下几点：

　　1、价格，相对来说聚醚的比聚酯贵一点。这个是针对新料，副牌或再生料什么的除外。

　　2、物性表上都会有详细参数和应用，一般也很好区分出来。

　　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。当然，不同厂家不同型号也有要详细讨论了。

　　4、应用，聚酯就是耐油耐高温，聚醚就是耐油耐低温。从产品的应用也可以看出来原料是聚酯还是聚醚了。

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.