Thermoplastic elastomer material and its preparation method
A thermoplastic elastomer and raw material technology, applied in the field of thermoplastic elastomer materials and its preparation, can solve problems such as easy generation of air marks, poor fluidity, and affecting the appearance of nylon
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[0036] The preparation method of above-mentioned thermoplastic elastomer material, comprises the following steps:
[0037] The raw materials of the thermoplastic elastomer are mixed, then extruded and granulated to obtain the thermoplastic elastomer material. Specifically, step S110 to step S150 are included.
[0038] Step S110, stirring the ethylene-acrylate-maleic anhydride terpolymer and the polyamide evenly to obtain a first mixture;
[0039] In one of the embodiments, the stirring is carried out in a horizontal mixer, and the stirring rate is 30r / min-60r / min.
[0040] In one embodiment, the stirring temperature is 35°C-60°C; the stirring time is 5min-15min. Preferably, the stirring temperature is normal temperature.
[0041] Step S120, extruding and granulating the first mixture to obtain intermediate masterbatches, and drying the intermediate masterbatches.
[0042] In one of the embodiments, the extrusion and pelletization of the premix is carried out in a twin-sc...
Embodiment 1
[0054] (1) 8 parts of ethylene-acrylate-maleic anhydride terpolymer (DuPont A560) and 3 parts of polyamide (TP4208 from Taiwan Jisheng) are put into a horizontal mixer, and at normal temperature, the stirring speed is Stirring under the condition of 30r / min for 15min to obtain the first mixture;
[0055] (2) Extrude and pelletize the first mixture in a twin-screw extruder with a rotating speed of 250r / min to 300r / min, a temperature of 245°C, and an aspect ratio of 24:1 to obtain intermediate masterbatches, And dry the intermediate masterbatch at a temperature of 80°C for 3 hours for later use.
[0056] (3) Put 25 parts of SEBS4055 (Kuraray, Japan) into a horizontal mixer, add 44 parts of KN4010 (Karamay Oil Refinery), the above intermediate masterbatch, and 5 parts of POE grafted maleic anhydride (Exxon Mobil GR216) was stirred for 10 min at 60° C. with a rotation speed of 40 r / min to obtain the second mixture.
[0057] (4) Add 15 parts of calcium carbonate, 0.3 parts of ant...
Embodiment 2
[0060] (1) Put 18 parts of ethylene-acrylate-maleic anhydride terpolymer (DuPont A560) and 3 parts of polyamide (BL130-N2 from Taiwan Jisheng) into a horizontal mixer, at room temperature, stirring speed Stirring for 5 min under the condition of 60 r / min to obtain the first mixture.
[0061] (2) Extrude and pelletize the first mixture in a twin-screw extruder with a rotating speed of 250r / min to 300r / min, a temperature of 235°C, and an aspect ratio of 24:1 to obtain intermediate masterbatches, And dry the intermediate masterbatch at a temperature of 80°C for 3 hours for later use.
[0062] (3) Put 15 parts of SEBS1651 of U.S. Kraton Company into a horizontal mixer, add 29 parts of mineral oil (500N of Korea Ssangyong Company), the above-mentioned intermediate masterbatch, 5 parts of POE grafted maleic anhydride (Angstrom) Kexon Mobil GR216) was stirred at 35° C. and the rotation speed was 60 r / min for 15 minutes to obtain the second mixture.
[0063] (4) Add 30 parts of sili...
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