Composite calcium carbonate modified PVC (polyvinyl chloride) rolling film and preparation method thereof
A technology of composite calcium carbonate and polyvinyl chloride, which is applied in the field of preparation of composite calcium carbonate modified polyvinyl chloride calendered film, can solve the problems of reduced mechanical properties such as the strength of PVC calendered film, low oil absorption value, etc., so as to reduce the cost of raw materials and The amount of organic additives used, the production process is simple, and the effect of simple production process
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Embodiment 1
[0032] First prepare composite calcium carbonate:
[0033] Step 1: Add water-milled calcium carbonate to the high-speed mixer. After 5 minutes of high-speed mixing, stop the rotation, turn on the high-speed mixer, and brush off the calcium carbonate adsorbed on the wall with a brush. At the same time, add water-milled calcium carbonate with a mass ratio of 0.5% titanium Ester coupling agent, and then continue to mix for 8 minutes, and the mixing temperature is controlled at 100°C to obtain activated water-ground calcium carbonate;
[0034] Step 2: adopt the same method to prepare active nano-calcium carbonate, wherein the addition of titanate is 0.5% of the quality of nano-calcium carbonate;
[0035] Step 3: The active ground calcium carbonate and the active nano-calcium carbonate are mixed in a mass ratio of 0.5:1 to prepare composite calcium carbonate.
[0036] Preparation of composite calcium carbonate modified polyvinyl chloride calendered film:
[0037] A. Add 100kg of ...
Embodiment 2
[0042] First prepare composite calcium carbonate:
[0043] Step 1: Add water-milled calcium carbonate to the high-speed mixer. After 4 minutes of high-speed mixing, stop the rotation, turn on the high-speed mixer, and brush off the calcium carbonate adsorbed on the wall with a brush. At the same time, add water-milled calcium carbonate with a mass ratio of 0.25% titanium Ester coupling agent, and then continue to mix for 4min, the mixing temperature is controlled at 70°C, and activated water milled calcium carbonate is obtained;
[0044] Step 2: adopt the same method to prepare active nano-calcium carbonate, wherein the addition of titanate is 1% of the quality of nano-calcium carbonate, and the addition of aluminate is 0.25% of the quality of nano-calcium carbonate;
[0045] Step 3: Active ground calcium carbonate is mixed with active nano-calcium carbonate in a mass ratio of 0.5:1 to prepare active composite calcium carbonate.
[0046] Preparation of composite calcium carbo...
Embodiment 3
[0052] First prepare composite calcium carbonate:
[0053] Step 1: Add water-milled calcium carbonate to the high-speed mixer. After 5 minutes of high-speed mixing, stop the rotation, turn on the high-speed mixer, brush off the calcium carbonate adsorbed on the wall with a brush, and add water-milled calcium carbonate with a mass ratio of 1%. Fatty acid coupling agent and 1% silane coupling agent, and then continue to mix for 8 minutes, and the mixing temperature is controlled at 30 ° C to obtain active water milled calcium carbonate;
[0054] Step 2: adopt the same method to prepare active nano-calcium carbonate, wherein the addition of coupling agent stearic acid is 0.25% of the quality of nano-calcium carbonate, and the addition of aluminate is 0.25% of the quality of nano-calcium carbonate;
[0055] Step 3: Mix active ground calcium carbonate and active nano-calcium carbonate in a mass ratio of 0.15:1 to prepare active composite calcium carbonate.
[0056] Preparation of ...
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