Polylactic acid green nano-nucleating temperature resistance agent and preparation method of same
A technology of polylactic acid and temperature-resistant agent, which is applied in the field of polylactic acid green nano-nucleation temperature-resistant agent and its preparation, can solve the problems of poor heat resistance, slow crystallization rate, and increased cost of production products, so as to improve temperature resistance and Dimensional stability, improved crystallinity and heat resistance, good heterogeneous nucleation effects
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Embodiment 1
[0028] Step 1: Air-dry attapulgite and bentonite raw ore until the water weight content is ≤20%, then mix them, coarsely crush them into small particles with a crusher, and control the particle diameter at 2-4mm;
[0029] Step 2, spraying the small particles with a concentration of 5wt% sodium polyacrylate / sodium pyrophosphate composite dispersant solution (the weight ratio of sodium polyacrylate and sodium pyrophosphate is 1:1, the molecular weight of sodium polyacrylate is about 3000, compound The consumption of dispersing agent is equivalent to the 1.2wt% of described mineral clay weight), after fully mixing, carry out extruding into flake mixture with strong differential speed three-roller machine;
[0030] Step 3, put the flake mixture and water into a pulper, stir for 60 minutes, and pass the slurry through a 325-mesh high-frequency vibrating screen with ultrasonic waves;
[0031] Step 4, put the above-mentioned sieved slurry into an emulsifier, heat at 80-90°C, add ligh...
Embodiment 2
[0035] Step 1: Air-dry attapulgite and bentonite raw ore until the water weight content is ≤20%, then mix them, coarsely crush them into small particles with a crusher, and control the particle diameter at 2-4mm;
[0036] Step 2, the small particle spraying concentration is 5wt% sodium polyacrylate / sodium pyrophosphate composite dispersant solution (the weight ratio of sodium polyacrylate and sodium pyrophosphate is 2:1, the molecular weight of sodium polyacrylate is about 4000, compound The consumption of dispersing agent is equivalent to 1.5wt% of described mineral clay weight), after fully mixing, carry out extruding into flake mixture with strong differential speed three-roller machine;
[0037] Step 3, put the flake mixture and water into a pulper, stir for 60 minutes, and pass the slurry through a 325-mesh high-frequency vibrating screen with ultrasonic waves;
[0038] Step 4, put the above-mentioned sieved slurry into an emulsifier, heat at 80-90°C, add light magnesium ...
Embodiment 3
[0042] Step 1: Air-dry attapulgite and bentonite raw ore until the water weight content is ≤20%, then mix them, coarsely crush them into small particles with a crusher, and control the particle diameter at 2-4mm;
[0043] Step 2, spraying the small particles with a concentration of 5wt% sodium polyacrylate / sodium pyrophosphate composite dispersant solution (the weight ratio of sodium polyacrylate and sodium pyrophosphate is 1:2, the molecular weight of sodium polyacrylate is about 5000, compound The consumption of dispersing agent is equivalent to 2wt% of described mineral clay weight), after fully mixing, carry out extruding into flake mixture with strong differential speed three-roller;
[0044] Step 3, put the flake mixture and water into a pulper, stir for 60 minutes, and pass the slurry through a 325-mesh high-frequency vibrating screen with ultrasonic waves;
[0045] Step 4, put the above-mentioned sieved slurry into an emulsifier, heat at 80-90°C, add light magnesium ox...
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