TPE 3ª Generation
Elastomers TPE > TPE Generation
Elastomers 3rd generation | ||||||||
Products range | ||||||||
In Mexpolimeros we offer a wide range of 3rd generation TPV developed according to your needs, guaranteeing quality in products and service. Our range of products includes hardness grades from Shore A45 ÷ 50D, special grades stabilized to heat, with flame retardant, for blow, stabilized to hydrolysis and UV light as well as in the form of black pigment concentrates.
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TPE-V 3rd generation | ||||||||
The third generation of TPVs, are very resistant to heat and oil as the second generation, but maintain the low hardness of the first generation. New families of thermoplastic vulcanizates (TPV) were introduced commercially at the beginning of 2003 offering a resistance to heat and oil of 150 ° C in excess of 3000 h. These TPVs are based on a continuous phase thermoplastic matrix of polyamide dynamically vulcanized with polyacrylate elastomer (ACM). They are obtained in two steps; by polymerization by impregnation of second generation TPVs (TPE-A, TPC-ET, TPE-S, TPE-U, TPE-V) with acrylate monomers, grafting and crosslinking them in the solid state. To obtain a good balance between the properties of the product, the processability and the production it is necessary to use hydrophobic butylacrylate in the first step and then ethylacrylate in the second step. | ||||||||
Termoplasticos vulcanizados | ||||||||
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Properties | ||||||||
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Physica and mechanical properties | ||||||||
XPRENE P TPVs has excellent strength to shorten growth while being flexible, low density and excellent fatigue resistance, and good resistance to many acids and base and aqueous solutions. TPV flexibility varies from elastic, 45 on the Shore A scale, to hard, 50 on the D scale. General purpose grades are appropriate for many utilities, and also available in FDA, on the NSF list and medical degrees. | ||||||||
Thermal properties | ||||||||
Parts made of XPRENE P TPVs offer a constant service temperature range from -60 ÷ 135ºC without cracking or sticking. Excellent heat aging combines with resistance to oils, greases, gasoline and diesel for exceptional durability. The degrees of fire resistance meet the requirements of UL94. These grades are UL 94 V-0 or UL 94 HB. Compared with commercial TPV, our TPV - XPRENE HT, can withstand the IRM 903 oil at 150 ° C exceeding the TPC-ET copolyester. | ||||||||
Chemical properties | ||||||||
TPV has excellent resistance to shorten growth while it is flexible, high density and excellent fatigue resistance, and good resistance to many acids and base and aqueous solutions, to oils, gasoline and diesel fats. | ||||||||
Electrical Properties | ||||||||
They are good electrical insulators, with constant electrical properties over a wide range of temperatures and frequencies. They are generally used in overmolding rigid elements in electrical systems. | ||||||||
Porcessability | ||||||||
TPV can be processed in standard thermoplastic equipment. It can be injection molded, extruded, blow molded and thermoformed with the efficiency and economy associated with thermoplastic materials. Additionally, clean waste from these operations can be reprocessed. | ||||||||
Applications | ||||||||
Automotive industry: steering bellows, shock absorber bellows, air intake system ducts, spark plug wires, body plugs, burglary, glass encapsulation, command cables, fuel supply tubes. Electrical industry: high flexibility cables for ranges up to 30000V. Electrical connectors, insulated grips, food industry, cutlery and disposable tableware, kitchen food containers, toys, refrigerator trays, transparent plates. | ||||||||
New families of thermoplastic vulcanized (TPV) 3rd generation | ||||||||
Thermoplastic vulcanizates (TPV based on PP / EPDM) have several advantages over traditional thermoset elastomers. They offer functional performance similar to that of thermoset elastomers, but have the ease of processing and recyclability of thermoplastics resulting in low overall cycle times, elimination of internal mixing operations and the ability to over-mold with chemical adhesion to many thermoplastics. Unlike most thermoplastics, TPVs also retain a lower hardness with compressive behavior of elastomers. But due to the poor long-term heat and oil resistance, conventional TPVs (EPDM / polypropylene) have found limited use in under thehood and industrial applications that require continuous use temperatures above 135 ° C. The new families of thermoplastic vulcanizates (TPV) were introduced commercially in early 2003, offering resistance to heat and oil of 150 ° C over 3000 hours. These TPVs are based on a continuous-phase polyamide thermoplastic matrix dynamically vulcanized with polyacrylate elastomer (ACM). Applications for wide interest from the bottom of the car to industrial applications. The resulting results of the TPV are able to withstand long-term exposure at high temperature (150 ° C), air and oils. The initial ratings of the new class are based on dynamically vulcanized ACM and polyamide (ACM / PA). The composition is "rich in rubber" is the result of a difficulty, as well as the cushioning and physical properties comparable to those of ACM and AEM, although the characteristics of a favorable processing of thermoplastics are preserved. | ||||||||
Prolonged exposure to air | ||||||||
ACM / PA TPV has superior heat and oil resistance compared to COPE, Si-TPV and performance comparable to thermoset AEM elastomer at 150 ° C on prolonged exposure to air. The ACM // PA TPV has a performance comparable to the AEM thermoset elastomer at 175 ° C short-term exposure to peak air temperature. The ACM // PA TPV and the thermostable AEM elastomer were the only materials to retain over 50% of their original properties during the long term 150 ° C evaluation. | ||||||||