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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

Inactive Publication Date: 2013-11-06
JIANDE QINTANG CALCIUM CARBONATE IND RES & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problem that the mechanical properties such as the strength of the PVC calendered film obviously decrease when the heavy calcium carbonate is used to increase the PVC calendered film and reduce the cost in the prior art, and provides a low-cost preparation, fineness, and particle size distribution. Uniform, low oil absorption value composite calcium carbonate modified polyvinyl chloride calendered film and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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PUM

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Abstract

The invention relates to a composite calcium carbonate modified PVC (polyvinyl chloride) rolling film and a preparation method thereof. The preparation method comprises the preparation of composite calcium carbonate and the preparation of the composite calcium carbonate modified PVC rolling film. According to the composite calcium carbonate modified PVC (polyvinyl chloride) rolling film and the preparation method thereof, the composite calcium carbonate is formed by mixing active water-ground calcium carbonate and active nano-calcium carbonate, the production process is simple, the preparing costs are low, the prepared composite calcium carbonate is high in activating rate, and the needed coupling agents are small, can coat the surface thin layers of particles evenly and stably and well control the particle size of the processed particles. When the composite calcium carbonate which is prepared by mixing the active water-ground calcium carbonate and the active nano-calcium carbonate is used for preparing the PVC rolling film, the agglomeration of calcium carbonate particles is avoided, and the prepared rolling film has good mechanical properties.

Description

technical field [0001] The invention relates to a preparation method of a filler modified plastic film, in particular to a preparation method of a composite calcium carbonate modified polyvinyl chloride calendered film. Background technique [0002] Polyvinyl chloride (PVC) calendered film is obtained by mixing PVC resin powder, plasticizer, processing aid, lubricant, anti-impact agent, etc., and then plasticized and stretched through the calendering production process. It has a certain width, thickness, and pattern. film with certain mechanical properties. This film has the characteristics of high tensile strength, good thermal insulation performance, good transparency, uniform thickness and good adhesion. Widely used in industry, agriculture, transportation and other industries. [0003] Compared with the pure PVC material, the composite material obtained by adding nano-calcium carbonate to PVC has a greater improvement in tensile strength and elongation at break. Howev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K13/06C08K9/04C08K9/06C08K3/26C08K5/12C08K5/09B29B7/56
Inventor 吴波震徐晓鹏王旭朱林清
Owner JIANDE QINTANG CALCIUM CARBONATE IND RES & DEV
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