Method for modifying nano calcium carbonate through aluminum titanate and preparation method of PVC plastics

A technology of nano-calcium carbonate and aluminum titanate, which is applied in the treatment of fibrous fillers and dyed low-molecular-weight organic compounds, can solve the problems of poor compatibility of nano-calcium carbonate and not greatly improved rheological properties, and achieve Improve the mechanical properties and rheological properties, strong binding force, enhance the effect of lipophilicity

Inactive Publication Date: 2013-12-25
昆山市华浦塑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The compatibility of modified nano-calcium carbonate and PVC in the prior art is poor. Filling PVC with modified nano-calcium carbonate does not improve the mechanical properties of PVC, such as tensile strength, elongation at break and impact strength. There is a greater improvement, but the rheological properties have not been greatly improved

Method used

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  • Method for modifying nano calcium carbonate through aluminum titanate and preparation method of PVC plastics
  • Method for modifying nano calcium carbonate through aluminum titanate and preparation method of PVC plastics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add nano-calcium carbonate with an average particle size of 30nm into a large flask filled with deionized water, place the flask in a constant temperature water bath, install a high-speed mixer for the flask, and insert the stirring rod to a suitable position below the liquid level. Control the water bath temperature to 60°C. Start the stirrer, the control speed is 2500rpm. After stirring for 5 minutes, add 0.4% aluminum titanate accounting for the mass of nano-calcium carbonate, adjust the rotation speed to 1000 rpm, and stir for 60 minutes to obtain a calcium carbonate dispersion. The average particle diameter of the nanoparticles in the calcium carbonate dispersion liquid was measured by a Master2000 laser particle size analyzer from Malvern, UK, to be 360nm. Then the calcium carbonate dispersion is filtered, dried, pulverized and passed through a 200-mesh sieve to obtain the modified nano-calcium carbonate.

[0025] Based on the quality of PVC resin, put 30% modif...

Embodiment 2

[0027] Add nano-calcium carbonate with an average particle size of 35nm into a large flask filled with deionized water, place the flask in a constant temperature water bath, install a high-speed mixer for the flask, and insert the stirring rod to a suitable position below the liquid level. Control the temperature of the water bath to 65°C. Start the stirrer, the control speed is 3000rpm. After stirring for 7 minutes, add aluminum titanate accounting for 0.6% of the mass of nano-calcium carbonate, adjust the rotation speed to 1200 rpm, and stir for 80 minutes to obtain a calcium carbonate dispersion. The average particle diameter of the nanoparticles in the calcium carbonate dispersion liquid was measured to be 325nm with a Master2000 laser particle size analyzer from Malvern, UK. Then the calcium carbonate dispersion is filtered, dried, pulverized and passed through a 200-mesh sieve to obtain the modified nano-calcium carbonate.

[0028] Based on the quality of PVC resin, pu...

Embodiment 3

[0030] Add nano-calcium carbonate with an average particle size of 40nm into a large flask filled with deionized water, place the flask in a constant temperature water bath, install a high-speed mixer for the flask, and insert the stirring rod to a suitable position below the liquid level. Control the temperature of the water bath to 70°C. Start the stirrer, the control speed is 3500rpm. After stirring for 8 minutes, add 0.9% aluminum titanate accounting for the mass of nano-calcium carbonate, adjust the rotation speed to 1500 rpm, and stir for 90 minutes to obtain a calcium carbonate dispersion. The average particle diameter of the nanoparticles in the calcium carbonate dispersion was measured to be 250nm with a Master2000 laser particle size analyzer from Malvern, UK. Then the calcium carbonate dispersion is filtered, dried, pulverized and passed through a 200-mesh sieve to obtain the modified nano-calcium carbonate.

[0031] Based on the quality of PVC resin, put 45% modi...

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Abstract

The invention discloses a method for modifying nano calcium carbonate through aluminum titanate and a preparation method of PVC plastics. The method for modifying the nano calcium carbonate through the aluminum titanate includes a method for preparing the modified nano calcium carbonate through the aluminum titanate, and includes the following steps that (1) the nano calcium carbonate is dispersed in deionized water; (2) the aluminum titanate is added, and dispensing is conducted continuously; (3) filtering and drying are carried out. By means of the aluminum titanate, the nano calcium carbonate dispersed in a liquid phase is wrapped, lipophilicity of the nano calcium carbonate is enhanced, and therefore dispersity and flowability of the nano calcium carbonate in PVC resin are improved, so that the nano calcium carbonate and the PVC resin have good compatibility. The improvement of the compatibility guarantees that binding force of the PVC resin and the nano calcium carbonate is strong, and mechanical properties and rheological properties are improved.

Description

technical field [0001] The invention relates to the technical field of PVC, in particular to a method for modifying calcium carbonate with aluminum titanate and a preparation method for PVC plastic. Background technique [0002] PVC (polyvinyl chloride) is one of the general-purpose plastics with excellent comprehensive properties. It has excellent comprehensive properties such as flame retardancy, corrosion resistance, insulation, and wear resistance, as well as the advantages of low price and wide source of raw materials. It has been widely used in various fields. application. However, in the processing and application of PVC, especially when it is used as a structural material, it also exposes disadvantages such as low impact strength and poor thermal stability. In addition, its UV resistance is poor, and it is easy to age under long-term outdoor sunlight, so it needs to be tested. Modified to improve its application performance. Nano-calcium carbonate is an excellent i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/02C09C3/08C08L27/06C08K9/10C08K3/26C08K3/30C08K5/12
Inventor 吴镇宇
Owner 昆山市华浦塑业有限公司
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