TPEE杜邦美國(guó)G5544耐高溫

TPEE簡(jiǎn)介：

TPEE具有高強(qiáng)度、高彈性、耐油、耐酸堿、耐高溫、耐輻射，動(dòng)態(tài)力學(xué)性能特優(yōu)等特性；使用溫度范圍為－50℃～＋180℃，硬度范圍30-75D，分為高性能級(jí)、擠出級(jí)、吹塑級(jí)、阻燃級(jí)和改性級(jí)。

產(chǎn)品通過(guò)SGS認(rèn)證，UL認(rèn)證。不含重金屬，PBB和PBDE，符合歐盟ROHS指令；阻燃系列產(chǎn)品可達(dá)到UL-94 V-0級(jí)，氧指數(shù)27，介電強(qiáng)度20MV/m，體積電阻率大于1×1010Ω.m。

TPEE（熱塑性聚酯彈性體）是含有聚酯硬段和聚醚軟段的嵌段共聚物。其中聚醚軟段和未結(jié)晶的聚酯形成無(wú)定形相聚酯硬段部分結(jié)晶形成結(jié)晶微區(qū)，起物理交聯(lián)點(diǎn)的作用。TPEE具有橡膠的彈性和工程塑料的強(qiáng)度；軟段賦予它彈性，使它象橡膠；硬段賦予它加工性能，使它象塑料；與橡膠相比，它具有更好的加工性能和更長(zhǎng)的使用壽命；與工程料相比，同樣具有強(qiáng)度高的特點(diǎn)，而柔韌性和動(dòng)態(tài)力學(xué)性能更好

性能特點(diǎn)

TPEE性能特點(diǎn)

高性能級(jí)：結(jié)構(gòu)強(qiáng)度高、耐蠕變性好、回彈性優(yōu)異、抗沖和耐彎曲疲勞、耐磨、尺寸穩(wěn)定。在低溫時(shí)具有柔韌性，在高溫下也能保持良好的性能。除此而外，它還能抵制許多工業(yè)化學(xué)品、油和溶劑導(dǎo)致的腐蝕。

擠出級(jí)：除具有高性能級(jí)的特點(diǎn)外,熔體強(qiáng)度更好,專用于擠出成型。

吹塑級(jí)：除具有高性能級(jí)的特點(diǎn)外，還具有良好的熔體強(qiáng)度。

改性級(jí)：是多元嵌段共聚物，是優(yōu)良的塑料改性劑，用于改進(jìn)POM、PBT的抗沖性。

阻燃級(jí)：是高性能級(jí)與自制阻燃母料共混物，以滿足材料阻燃的要求。

Methods: TPEE can be produced easily by injection molding, extrusion, blow molding, rotational molding, melt casting and other thermoplastic processing methods. Depending on the processing method and the type of polymer, it can be processed from 177 °C to 260 °C. All grades have a clear melting point and excellent melt stability. TPEE is resistant to Hydrolysis, does not react with moisture in the air, it has weak water absorption, in order to make the piece perfect, need to dry before use, although moisture content is below 0.1% , extrusion and molding processing will not produce defects. TPEE degrades at high temperatures in the presence of acidic media. Therefore, TPEE can not be combined with acid additives. The viscosity of TPEE is not sensitive to shear rate, especially at low shear rate (E. G. extrusion) . The product must be dried for 4 ~ 6 hours in an air blast oven at 80 ~ 110 °C before processing. The recycled material can be mixed with the new material, but the dosage should not exceed 25% . INJECTION MOLDING: THE MATERIAL TEMPERATURE SHOULD BE 5 ~ 15 °C higher than the product melting range, mold temperature is 20 ~ 50 °C, injection pressure is 60 ~ 100 MPA, injection speed is medium and low. Extrusion blow molding: The ratio of screw length to diameter is 24∶1, the barrel temperature should be higher than the product melting range 5 ~ 10 °C.