Preparation method of nano calcium carbonate reinforced and toughened PVC

A nano-calcium carbonate and toughening technology, which is applied in the field of preparation of nano-calcium carbonate-strengthened and toughened PVC, can solve the problem of performance reduction such as toughness, strength and rigidity, failure to achieve satisfactory filling and reinforcing effects, and high polymer compatibility. Insufficient and other problems, to achieve the effect of improving rheological properties, volume reduction, and specific surface area increase

Pending Publication Date: 2022-05-06
广西雄塑科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since calcium carbonate is a hydrophilic compound, there are defects such as insufficient compatibility with high polymers and poor dispersion in practical applications, and satisfact...

Method used

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  • Preparation method of nano calcium carbonate reinforced and toughened PVC

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Embodiment 1

[0025] A preparation method for nano-calcium carbonate stiffened and toughened PVC, comprising the following steps:

[0026] (1) Sodium ricinoleic acid ester sulfate was dissolved in water and ultrasonically oscillated at room temperature for 8 minutes to obtain solution A; methyltriethoxysilane was dissolved in ethanol solution and ultrasonically oscillated at room temperature for 15 minutes to obtain solution B; 100rpm;

[0027] (2) Add ammonia water to solution B under stirring, ultrasonically shake at 60°C for 15 minutes, then add diethanolamine, continue ultrasonication for 25 minutes, and mix with solution A to obtain a surface treatment agent. The mass ratio of solution A to solution B is 10:1, the mass ratio of solution B, alkali and diethanolamine is 5:0.1:1;

[0028] (3) adding the surface treatment agent to the nano-calcium carbonate suspension, heating to 55° C., reacting for 6 hours, and then washing and drying to obtain a modified nano-calcium carbonate; wherein...

Embodiment 2

[0031] A preparation method for nano-calcium carbonate stiffened and toughened PVC, comprising the following steps:

[0032] (1) Sodium ricinoleic acid ester sulfate was dissolved in water and ultrasonically oscillated at room temperature for 5 minutes to obtain solution A; methyltriethoxysilane was dissolved in ethanol solution and ultrasonically oscillated at room temperature for 10 minutes to obtain solution B; 100rpm;

[0033] (2) Add ammonia water to solution B under stirring, ultrasonically shake at 50°C for 15 minutes, then add diethanolamine, continue ultrasonication for 25 minutes, and mix with solution A to obtain a surface treatment agent. The mass ratio of solution A to solution B is 10:0.1; the mass ratio of solution B, alkali and diethanolamine is 5:0.05:0.5;

[0034] (3) adding the surface treatment agent to the nano-calcium carbonate suspension, heating to 45° C., reacting for 8 hours, and then washing and drying to obtain a modified nano-calcium carbonate; wh...

Embodiment 3

[0037] A preparation method for nano-calcium carbonate stiffened and toughened PVC, comprising the following steps:

[0038] (1) Sodium ricinoleic acid ester sulfate was dissolved in water and ultrasonically oscillated at room temperature for 10 minutes to obtain solution A; methyltriethoxysilane was dissolved in ethanol solution and ultrasonically oscillated at room temperature for 20 minutes to obtain solution B; 100rpm;

[0039] (2) Add ammonia water to solution B under stirring, ultrasonically shake at 65°C for 15 minutes, then add diethanolamine, continue ultrasonication for 35 minutes, and mix with solution A to obtain a surface treatment agent. The mass ratio of solution A to solution B is 10:2; the mass ratio of solution B, alkali and diethanolamine is 5:0.2:2;

[0040] (3) adding the surface treatment agent to the nano-calcium carbonate suspension, heating to 65° C., reacting for 5 hours, and then washing and drying to obtain a modified nano-calcium carbonate; wherei...

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Abstract

The invention discloses a preparation method of nano calcium carbonate reinforced and toughened PVC (polyvinyl chloride), which comprises the following steps: (1) dissolving sodium ricinoleate sulfate in water, and carrying out ultrasonic oscillation at room temperature for 5-10 minutes to obtain a solution A; dissolving silicon salt in an ethanol solution to obtain a solution B; (2) adding alkali into the solution B in a stirring state, carrying out ultrasonic oscillation, then adding diethanol amine, and continuously carrying out ultrasonic treatment to be mixed with the solution A, so as to obtain a surface treating agent; (3) adding a surface treating agent into the nano calcium carbonate suspension, heating for reaction, washing and drying to obtain modified nano calcium carbonate; and (4) mixing the modified nano calcium carbonate, PVC resin and auxiliary materials according to a certain proportion, curing, extruding and cooling to obtain the product. According to the invention, the nano calcium carbonate suspension is subjected to wet surface modification by adopting the surface modifier, and the toughened PVC nano composite material is prepared by compounding PVC and nano calcium carbonate, so that the strength and rigidity are improved while toughening is realized, and the heat resistance of the material is improved.

Description

technical field [0001] The invention relates to the technical field of PVC product production, in particular to a preparation method of nano calcium carbonate stiffened and toughened PVC. Background technique [0002] PVC used to be the most widely used general-purpose plastic in the world. It is widely used in building materials, industrial products, daily necessities, floor leather, floor tiles, artificial leather, pipes, wires and cables, packaging films, bottles, foaming materials, sealing materials, fibers, etc. [0003] Nano-calcium carbonate is the main functional filler for PVC plasticization. Its particle shape, particle size and surface treatment have a great influence on the rheological properties of the plastisol, among which the surface treatment of calcium carbonate has the greatest impact. However, since calcium carbonate is a hydrophilic compound, there are defects such as insufficient compatibility with high polymers and poor dispersion in practical applica...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K9/06C08K9/04C08K3/26
CPCC08L27/06C08K2003/265C08K2201/011C08L2201/08C08L2203/18C08K9/06C08K9/04C08K3/26
Inventor 黄少卫陈兆伦邓广昌
Owner 广西雄塑科技发展有限公司
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