Blend of PPC, PBAT, PCL and PLA and preparation method thereof
A blend and cold mixing technology, which is applied in the field of PPC and PBAT, PCL and PLA blends and preparations, can solve the problems of pure PPC application difficulties, affecting storage and transportation, PPC sticking blocks, etc., to achieve strong toughness , fast biodegradation speed, easy processing effect
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Embodiment 1
[0016] Take by weighing 2000 grams of PPC (manufactured by 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), 20 grams of stearic acid gram, PLA is 100 grams, PCL is 50 grams, PBAT is 50 grams, joins in the high-speed mixer, stirs for 5 minutes under the condition that cold mixing temperature is 0 ℃, the rotating speed of mixer can be 1500 rpm; The material is extruded and granulated with a twin-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. At the same time, use the obtained pellets to prepare samples in the injection machine according to the requirements of GB / T17037-1997, and then according to GB / T 1040-2006 and According to the requirements of GB / T 2918-1998, the tensile performance test shall be carried out, and the test r...
Embodiment 2
[0018] Take by weighing PPC (with embodiment 1) 2000 grams, maleic anhydride 30 grams, lipophilic modified light calcium carbonate (particle size is 1250 orders) 50 grams, epoxy soybean oil 10 grams, PCL is 200 grams, PLA is 200 grams, PBAT 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 rpm; release the cold mixture, extrude with a single screw extruder 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 orders) 100 grams, stearic acid 20 grams, PCL is 100 grams, PLA is 500 grams, PBAT is Add 500 grams into a high-speed mixer, and stir for 10 minutes under the condition that the cold mixing temperature is 10°C. The rotating speed of the mixer can be 800 rpm; release the cold mixture, extrude and granulate with a twin-screw extruder, the highest 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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