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Dumb thermoplastic polyurethane elastomer composition and preparation method thereof
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A technology of thermoplastic polyurethane and elastomer, applied in the field of matte thermoplastic polyurethane elastomer composition and its preparation, to achieve the effect of improving processability, matte effect and surface scratch resistance
Inactive Publication Date: 2013-06-12
SHANGHAI KUMHO SUNNY PLASTICS +1
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Problems solved by technology
[0004] poor effect, poor surface scratch resistance and other defects; the invention provides a matte thermoplastic polyurethane elastomer composition and its preparation method
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Embodiment 1～7
[0036] The raw material involved in embodiment 1~7 is:
[0037] TPU is the polyether type and polyester type of BASF's trade name Elastollan 90A;
[0038] SEBS 1651 is Kraton G from Kraton Polymers;
[0039] 100# white oil is naphthenic oil from Xinjiang Karamay Petrochemical;
[0040] The compatibilizer is Kraton 1901 of Kraton polymer;
[0041] The antioxidant is [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol, purchased from Ciba Specialty Chemicals, and the product model is Irganox 1010.
[0042] The components and mass percentages of each composition in Examples 1-7 are shown in Table 1. Add the components of each composition into a high-speed mixer, mix for 1 to 3 minutes to obtain a premix, and then put the fully mixed premix into a twin-screw extruder, preferably a twin-screw extruder The length-to-diameter ratio of the extruder is greater than 36:1, the twin-screw extruder rotates at 280-320rpm, and the processing temperature is controlled a...
Embodiment 8～11
[0049] The raw materials involved in Examples 8 to 11 are the same as those in Examples 1 to 7, and the components and mass percentages of each composition in Examples 8 to 11 are as shown in Table 3. The preparation method of each embodiment composition is the same as in Example 1 ~7. The performance of the prepared composition was tested, and the results are shown in Table 4.
[0050] table 3
[0051]
[0052] Table 4
[0053]
[0054] It can be seen from Table 4 that the tensile strengths of Examples 8-11 are all greater than 20 Mpa and have lower gloss, that is, the compositions of Examples 8-11 have better parameters in terms of tensile strength and gloss. , so that the product has lower gloss while ensuring the tensile strength, which can better meet the performance requirements of the product.
[0055] In summary, the matt thermoplastic polyurethane elastomer composition of the present invention has better product surface matte effect and surface scratch resist...
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Abstract
The invention relates to a dumb thermoplastic polyurethane elastomer composition and a preparation method thereof, belonging to the technical field of high polymer materials. The dumb thermoplastic polyurethane elastomer composition comprises the following components in percentage by weight: 60%-90% of thermoplastic polyurethane elastomer, 5%-30% of styrene block copolymer resin, 0%-15% of rubberprocessing oil, 2%-6% of compatilizer and 0.1%-0.3% of antioxidant. The invention also relates to the preparation method of the composition. Compared with the prior art, styrene-ethylene-butene-styrene (SEBS) is used as the fogging agent of the thermoplastic polyurethane (TPU) polymer, the obtained product has a dumb surface and a good surface scratch resistance effect, and the surface dumb degree of the product can be regulated at random according to the factual requirement; and simultaneously, by using the method, the problem that the viscosity of the TPU polymer is mutated at the vicinity of a boiling point along with the variation of the temperature in the course of processing is solved, thereby greatly improving the workability of the TPU polymer.
Description
technical field [0001] The invention relates to a composition in the technical field of polymer materials and a preparation method thereof, in particular to a matte thermoplastic polyurethane elastomer composition and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane elastomer (TPU) is used in various wire and cable, and is gradually becoming a substitute for many materials, especially PVC and synthetic rubber. Thermoplastic polyurethane elastomer has good tear resistance, abrasion resistance and high and low temperature resistance. The surface of the wire and cable sheath made of pure TPU polymer is generally very bright. Considering the needs of factors such as aesthetics or surface scratch resistance, the surface of the wire and cable sheath made of TPU polymer is mostly matte in practical applications. deal with. At present, the gloss of pure TPU polymer products is generally reduced by adding inorganic ultrafine powders, such as n...
Claims
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