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          • 熱塑性彈性體的介紹及應用范圍
          • 本站編輯:杭州紅博新材料有限公司發布日期:2020-09-23 10:55 瀏覽次數:

          熱塑性彈性體,簡稱TPE或TPR,是Thermoplastic rubber的縮寫。是常溫下具有橡膠的彈性,高溫下具有可塑化成型的一類彈性體。熱塑性彈性體的結構特點是由化學鍵組成不同的樹脂段和橡膠段,樹脂段憑借鏈間作用力形成物理交聯點,橡膠段是高彈性鏈段,貢獻彈性。塑料段的物理交聯隨溫度的變化而呈可逆變化,顯示了熱塑性彈性體的塑料加工特性。因此,熱塑性彈性體具有硫化橡膠的物理機械性能和熱塑性塑料的工藝加工性能,是介于橡膠與樹脂之間的一種新型高分子材料,常被人們稱為第三代橡膠。

          Thermoplastic elastomer, referred to as TPE or TPR, is the abbreviation of thermoplastic rubber. It is a kind of elastomer which has the elasticity of rubber at room temperature and can be plasticized at high temperature. The structural characteristics of thermoplastic elastomer are that different resin segments and rubber segments are composed of chemical bonds. The resin segments form physical crosslinking points by means of inter chain forces, and the rubber segments are high elastic segments, contributing to elasticity. The physical crosslinking of the plastic segment changes reversibly with the change of temperature, which shows the plastic processing characteristics of thermoplastic elastomer. Therefore, thermoplastic elastomer has the physical and mechanical properties of vulcanized rubber and processing properties of thermoplastic plastics. It is a new polymer material between rubber and resin, and is often called the third generation rubber.

          自從1958 年Bayer公司首次制備出熱塑性聚氨酯( TPU) 以來,TPE就得到了迅速發展,尤其是1963年苯乙烯類熱塑性彈性體問世以后,關于熱塑性彈性體的制備理論逐步得到完善,應用領域進一步擴大。

          Thermoplastic polyurethane (TPU) has been developed rapidly since Bayer company first prepared TPU in 1958. Especially since the appearance of styrene thermoplastic elastomer in 1963, the preparation theory of TPU has been gradually improved and the application field has been further expanded.

          熱塑性彈性體是介于橡膠與樹脂之間的一種新型高分子材料,不僅可以取代部分橡膠,還能使塑料得到改性。熱塑性彈性體所具有的橡膠與塑料的雙重性能和寬廣的特性,使之在橡膠工業中廣泛用于制造膠鞋、膠布等日用制品和膠管、膠帶、膠條、膠板、膠件以及膠粘劑等各種工業用品。同時,熱塑性彈性體還可代替橡膠大量用在PVC、PE、PP、PS等通用熱塑性樹脂甚至PU、PA、CA等工程塑料的改性上面,使塑料工業也出現了嶄新的局面。

          Thermoplastic elastomer is a new polymer material between rubber and resin. It can not only replace part of rubber, but also modify plastics. Thermoplastic elastomer (TPE) is widely used in the rubber industry for the manufacture of rubber shoes, rubber cloth and other daily products, as well as various industrial products such as rubber hose, tape, rubber strip, rubber plate, rubber parts, adhesives and so on. At the same time, thermoplastic elastomer can also replace rubber and be widely used in the modification of general thermoplastic resins such as PVC, PE, PP, PS, and even engineering plastics such as PU, PA, CA, which makes a new situation in the plastic industry.

          熱塑性彈性體可概括為通用TPE和工程TPE兩個類型,目前己發展到l0大類30多個品種。從1938年德國Bayer最早發現聚氨酯類TPE,1963年和1965年美國Phillips和Shell,開發出苯乙烯—丁二烯—苯乙烯嵌段聚合物TPE,到70年代美歐日各國開始批量生產烯烴類TPE以來,技術不斷創新,新的TPE品種不斷涌現,構成了當今TPE的龐大體系,使橡膠工業與塑料工業結合聯姻大大向前邁進了一步。 世界上已工業化生產的TPE有:苯乙烯類(SBS、SIS、SEBS、SEPS)、烯烴類(TP0、TPV)、雙烯類(TPB、TPI)、氯乙烯類(TPVC、TCPE)、氨酯類(TPU)、酯類(TPEE)、酰胺類(TPAE)、有機氟類(TPF)、有機硅類和乙烯類等,幾乎涵蓋了現在合成橡膠與合成樹脂的所有領域。

          Thermoplastic elastomers can be classified into two types: General TPE and engineering TPE. At present, TPE has been developed to more than 30 varieties in 10 categories. Polyurethane TPE was first discovered by Bayer of Germany in 1938, and styrene butadiene styrene block polymer TPE was developed by Phillips and shell in 1963 and 1965. Since 1970s, olefin TPE has been produced in the United States, Europe and Japan in large quantities. New TPE products have been emerging, forming a huge system of TPE today, which combines rubber industry with plastic industry Marriage is a big step forward. The industrial TPEs produced in the world include styrene (SBS, SIS, SEBS, SEPs), olefins (tp0, TPV), dienes (TPB, TPI), vinyl chloride (tpvc, tcpe), aminoesters (TPU), esters (TPEE), amides (tpae), organic fluorine (TPF), silicone and ethylene, etc., covering almost all fields of synthetic rubber and synthetic resin 。

          熱塑性彈性體具有硫化橡膠的物理機械性能和軟質塑料的工藝加工性能。由于不需再像橡膠那樣經過熱硫化,因而使用簡單的塑料加工機械即可很容易地制成最終產品。它的這一特點,使橡膠工業生產流程縮短了l/4,節約能耗25%~40%,提高效率10~20倍,堪稱橡膠工業又一次材料和工藝技術革命。

          Thermoplastic elastomer has the physical and mechanical properties of vulcanized rubber and processing properties of soft plastics. Since it is no longer necessary to heat vulcanize like rubber, the final product can be easily made with simple plastic processing machinery. With this feature, the production process of rubber industry is shortened by 1 / 4, energy consumption is saved by 25% - 40%, and efficiency is increased by 10-20 times. It can be called another revolution of material and technology in rubber industry.

          制造加工熱塑性彈性體的主要兩種方法是擠塑和注塑成型,模塑成型用得極少。通過注塑成型來制造加工熱塑性彈性體,既快速又經濟。用于一般熱塑性塑料的注塑成型方法和設備均適用于熱塑性彈性體。

          The two main methods of manufacturing thermoplastic elastomer are extrusion and injection molding, and molding is rarely used. It is fast and economical to manufacture and process thermoplastic elastomer by injection molding. The injection molding methods and equipment used for general thermoplastics are suitable for thermoplastic elastomers.

          熱塑性彈性體還可通過吹塑、熱成型以及熱焊接進行加工。而這些方法均不能應用于熱固性橡膠制品。

          Thermoplastic elastomers can also be processed by blow molding, thermoforming and thermal welding. These methods can not be applied to thermosetting rubber products.

          熱塑性彈性體在加工應用上有以下特點:

          Thermoplastic elastomer has the following characteristics in processing and application

          1、可用標準的熱塑性塑料加工設備和工藝進行加工成型,如擠出、注射、吹塑等。

          1. Standard thermoplastic processing equipment and technology can be used for processing and molding, such as extrusion, injection, blow molding, etc.

          2、不需硫化,可制備生產橡膠制品,減少硫化工序,節約投資,能耗低,工藝簡單、加工周期縮短,生產效率提高,加工費用低。

          2. Without vulcanization, rubber products can be prepared and produced, reducing vulcanization process, saving investment, low energy consumption, simple process, shortening processing cycle, improving production efficiency and low processing cost.

          3、邊角廢料可回收使用,節省資源,也對環境保護有利。

          3. The waste can be recycled, save resources, and is beneficial to environmental protection.

          4、由于在高溫下易軟化,所制產品的使用溫度有一定限制。

          4. Because it is easy to soften at high temperature, the service temperature of the product is limited.


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