Blend of PPC, PBAT, PCL and PBS and preparation method thereof
A blend and cold mixing technology, applied in PCL and PBS blends and preparation, PPC and PBAT fields, can solve the problems of pure PPC application difficulties, affecting storage and transportation, PPC forming agglomerates, etc., to achieve mechanical properties Improvement, simple and easy-to-obtain raw materials, and common equipment
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Embodiment 1
[0016] Weigh 2000 grams of PPC (produced by Inner Mongolia Mengxi High-tech Group Company, glass transition temperature is 35 ℃), 20 grams of maleic anhydride, 20 grams of lipophilic modified light calcium carbonate (particle size is 800 mesh), stearic acid 2 grams, 100 grams of PBAT, 50 grams of PCL, and 50 grams of PBS were added to a high-speed mixer and stirred for 5 minutes at a cold mixing temperature of 0°C. The rotating speed of the mixer could be 1500 rpm; Mix the materials, extrude and granulate with a single-screw extruder, and the heating temperature in the highest heating zone is 173°C. Use the obtained pellets to test the sticky temperature of the pellets in the oven, and use the obtained pellets to prepare samples in the injection machine according to the requirements of GB / T 17037-1997, and then according to GB / T 1040-2006 According to the requirements of GB / T 2918-1998, the tensile performance test is carried out, and the test results are recorded.
Embodiment 2
[0018] Take by weighing 2000 grams of PPC (with embodiment 1), 30 grams of maleic anhydride, 50 grams of lipophilic modified light calcium carbonate (particle size is 1250 orders), 10 grams of epoxy soybean oil, PCL is 200 grams, and PBAT is 200 grams, PBS is 200 grams, join in the high-speed mixer, under the situation that the cold mixing temperature is 5 ℃, stir for 6 minutes, the rotating speed of the mixer can be 1000 rev / min; Out of granulation, the heating temperature in the highest heating zone is 175°C. The sticky starting temperature and tensile properties were tested with the obtained pellets, and the test results were recorded (same as in Example 1).
Embodiment 3
[0020] Take by weighing PPC (with embodiment 1) 2000 grams, maleic anhydride 20 grams, light calcium carbonate (particle size is 1250 order) 100 grams, stearic acid 20 grams, PCL is 100 grams, PBAT is 500 grams, PBS is Add 500 grams into a high-speed mixer, and stir for 10 minutes at a cold mixing temperature of 10°C. The speed of the mixer can be 800 rpm; release the cold mixture, and extrude and granulate with a single-screw extruder. The heating temperature in the heating zone is 176°C. The sticky starting temperature and tensile properties were tested with the obtained pellets, and the test results were recorded (same as in Example 1).
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