Nano-calcium-carbonate-modified acrylate linear high-molecular polymer and preparation method thereof
A technology of nano-calcium carbonate and acrylic esters, applied in the field of PVC processing aids, can solve the problems of general surface smoothness of PVC profiles, general fluidity of particle state, and rising cost, and achieve simple and easy preparation methods and good fluidity , low cost effect
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[0014] Example 1
[0015] 1500 kg of softened water, 900 kg of methyl methacrylate, 100 kg of butyl acrylate, 1 kg of potassium persulfate, 15 kg of sodium dodecyl sulfonate, and 2 kg of nano-calcium carbonate.
[0016] The preparation method of the copolymer is as follows:
[0017] Add a set amount of demineralized water to the glass-lined reactor, turn on the stirring, the stirring speed is 75 rpm, add emulsifier, methyl methacrylate and butyl acrylate, close the reactor, turn on the heating, when the temperature inside the reactor When 65°C is reached, an initiator is added. When the temperature in the reactor starts to rise, the polymerization reaction in the reactor has already started, and the cooling water is turned on to cool down. When the temperature rises to the peak, no longer rises, and starts to fall, add nano-calcium carbonate to the kettle. When the temperature continues to drop to 65°C, turn off the cooling water. When the temperature in the kettle naturally drops ...
Example Embodiment
[0018] Example 2
[0019] 1500 kg of softened water, 900 kg of methyl methacrylate, 100 kg of butyl acrylate, 1 kg of potassium persulfate, 15 kg of sodium dodecyl sulfonate, and 10 kg of nano-calcium carbonate. The preparation method of Example 2 is the same as that of Example 1.
Example Embodiment
[0020] Example 3
[0021] 1500 kg of softened water, 900 kg of methyl methacrylate, 100 kg of butyl acrylate, 1 kg of potassium persulfate, 15 kg of sodium dodecyl sulfonate, and 50 kg of nano-calcium carbonate. The preparation method of Example 3 is the same as that of Example 1.
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