Thermoplastic elastomer, preparation method and use thereof
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A thermoplastic elastomer and modification technology, applied in the field of thermoplastic elastomer and its preparation, can solve the problems of poor weather resistance, chemical corrosion resistance, poor weather resistance, easy migration of processing oil, etc.
Inactive Publication Date: 2009-03-11
KURARAY SHANGHAI
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Problems solved by technology
PVC blends, due to the need to add plasticizers in the processing process, such as plasticizer DOP, which has adverse effects on the human body and the environment, are easy to move out during the use of PVC products, and their applications have been gradually restricted; by TPU The transparent material products made by etc., their chemical corrosion resistance, weather resistance and other properties are generally poor
[0003] Adding plasticizers, such as processing oil, to thermoplastic elastomers is
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Embodiment 1
[0055] The following components are represented by product models, and each product model has been described in detail in the content of the invention.
[0056] The thermoplastic elastomer comprises the following components in total weight percent:
[0057] A. RP-346R 10
[0058] B. HYBRAR TM 7311K 45
[0059] C. VERSIFY TM 3401 45
[0060] Provide a mixture of the above components, and use a twin-screw extruder to knead and granulate the mixture. The twin-screw extruder is produced by Berstorff, Germany, model ZE25A. The process conditions are: melt temperature 190-220 °C, screw speed 100-450rpm, head temperature 180-200°C, screw feeding section temperature 160-180°C, screw melting section temperature 180-220°C, to obtain a thermoplastic elastomer.
Embodiment 2
[0062] The thermoplastic elastomer comprises the following components in total weight percent:
[0063] A. RP-346R 10
[0064] B. Kraton MD6945 22.5
[0065] B. HYBRAR TM 7311K 22.5
[0066] C. VERSIFY TM 3401 45
[0067] The thermoplastic elastomer preparation process is the same as in Example 1.
Embodiment 3
[0069] The thermoplastic elastomer comprises the following components in total weight percent:
[0070] A. RP-346R 10
[0071] B. HYBRAR TM 7311K 45
[0072] C. VERSIFY TM 3401 22.5
[0073] C. VERSIFY TM 2400 22.5
[0074] The thermoplastic elastomer preparation process is the same as in Example 1.
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Abstract
The invention relates to a thermoplastic elastomer, which comprises the following compositions by gross weight percentage: A. 5 to 85 percent of polypropylene; B. 5 to 90 percent of vinylated styrene hydrogen/ conjugated diolefine segmented copolymer; and C. 5 to 90 percent of polyolefin thermoplastic elastomer. The preparation method is to physically mix mixture of various compositions for manufacturing transparent coating materials and so on. The thermoplastic elastomer has the advantages that the thermoplastic elastomer has good transparency, does not contain plasticizer such as processing oil and so on, so that emigration of the thermoplastic elastomer during the use process is avoided, thereby guaranteeing the absolute safety of the thermoplastic elastomer when applied to products such as foodpack, medical appliances and so on; the product is soft; the shore A rigidity is between 0 and 95; the flow rate of fused masses is between 0.1 and 100 grams per 10 minutes; and the thermoplastic elastomer has good weathering resistance, chemical resistance and solvent resistance.
Description
technical field [0001] The invention relates to the field of polymer materials, in particular to a thermoplastic elastomer and its preparation method and application. Background technique [0002] Traditional thermoplastic elastomers include materials such as PVC blends, TPU, etc., and their safety in use is increasingly the main focus of attention, especially for food packaging, wire and cable coating materials, electronic devices, toys, etc. even more so. PVC blends, due to the need to add plasticizers in the processing process, such as plasticizer DOP, which has adverse effects on the human body and the environment, are easy to move out during the use of PVC products, and their applications have been gradually restricted; by TPU The transparent material products made by etc., their chemical corrosion resistance, weather resistance and other properties are generally poor. [0003] Adding plasticizers, such as processing oil, to thermoplastic elastomers is a commonly used...
Claims
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