Surface treatment method for nanometer calcium carbonate filled with PVC plastic paste

A nano-calcium carbonate and surface treatment technology, which is applied in the treatment of dyed low-molecular organic compounds, fibrous fillers, coatings, etc., can solve the problems of high yield value of thixotropy, rheological stability, and poor thixotropy, and achieve good results. Economic and social benefits, low cost and easy operation

Active Publication Date: 2016-03-16
GUANGXI HUANA NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Gained nano-calcium carbonate has good lipophilicity and hydrophobicity, and at the same time, because the rosin resin has the effect of forming a coating, the coating it is filled with has an anti-corrosion effect, but the thixotr...

Method used

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  • Surface treatment method for nanometer calcium carbonate filled with PVC plastic paste

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A kind of surface treatment method of the nano-calcium carbonate of filling PVC plastisol, comprises the following steps:

[0032] (1) The specific surface area after carbonation is 21.3m 2 / g of nano-calcium carbonate slurry is transported to the surface treatment tank, the temperature is controlled at 50 ° C, stirred evenly, and nano-calcium carbonate suspension slurry is obtained;

[0033] (2) Adding a surface treatment agent in a stirring state, wherein the addition amount of the surface treatment agent is 2.5% of the dry mass of calcium carbonate, and continuously stirring for 90 minutes to complete the surface modification of nano-calcium carbonate; the surface treatment agent is made of A mass ratio of 1:1 consists of stearic acid and sodium ricinoleic acid methyl sulfate;

[0034] (3) The surface-modified nano-calcium carbonate slurry is dehydrated by pressure filtration, dried with a chain-belt dryer at a drying temperature of 110°C, pulverized, and finally pa...

Embodiment 2

[0037] A kind of surface treatment method of the nano-calcium carbonate of filling PVC plastisol, comprises the following steps:

[0038] (1) The specific surface area after carbonation is 22.8m 2 / g of nano-calcium carbonate slurry is transported to the surface treatment tank, the temperature is controlled at 60 ° C, stirred evenly, and nano-calcium carbonate suspension slurry is obtained;

[0039] (2) Adding a surface treatment agent in a stirring state, wherein the addition of the surface treatment agent is 2% of the dry mass of calcium carbonate, and continuously stirring for 80 minutes to complete the surface modification of nano-calcium carbonate; the surface treatment agent is composed of The mass ratio is composed of arachidic acid and ethyl ricinoleic acid sodium sulfate of 1:2;

[0040] (3) The surface-modified nano-calcium carbonate slurry is subjected to pressure filtration dehydration treatment, dried with a chain-belt dryer at a drying temperature of 100°C, pulv...

Embodiment 3

[0043] A kind of surface treatment method of the nano-calcium carbonate of filling PVC plastisol, comprises the following steps:

[0044] (1) The specific surface area after carbonation is 21.5m 2 / g of nano-calcium carbonate slurry is transported to the surface treatment tank, the temperature is controlled at 70 ° C, stirred evenly, and nano-calcium carbonate suspension slurry is obtained;

[0045] (2) Adding a surface treatment agent in a stirring state, wherein the addition amount of the surface treatment agent is 3.5% of the dry mass of calcium carbonate, and continuously stirring for 70 minutes to complete the surface modification of nano-calcium carbonate; the surface treatment agent is composed of Behenic acid and ethyl ricinoleic acid sodium sulfate are composed of a mass ratio of 1:3;

[0046] (3) The surface-modified nano-calcium carbonate slurry is subjected to pressure filtration dehydration treatment, dried using a chain-belt dryer at a drying temperature of 90°C...

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Abstract

A disclosed surface treatment method for nanometer calcium carbonate filled with a PVC plastic paste comprises the following steps: conveying a nanometer calcium carbonate slurry subjected to carbonation to a surface treatment tank, controlling the temperature to 50-80 DEG C, and stirring uniformly; adding a surfactant composed of saturated aliphatic acid and sodium sulfated ricinoleate with the mass ratio of 1:0.5-3 with stirring, and continuously stirring for 60-90 min, so as to finish surface modification of nanometer calcium carbonate; and carrying out filtering, drying, crushing and final sieving, so as to obtain the product. The method employs a complex mixture of saturated aliphatic acid and sodium sulfated ricinoleate for surface treatment of nanometer calcium carbonate, and the processed nanometer calcium carbonate is capable of effectively improving the thixotropy, the yield value, the rheological stability and the like of the filler PVC plastic paste. The method is simple in technology, low in cost and easy to operate, is suitable for industrial production, and possesses relatively good economic benefit and social benefit.

Description

Technical field [0001] The invention involves the modification method of inorganic materials. Specifically, it is a surface treatment method of filling nano -calcium calcium carbonate that fills PVC. Background technique [0002] PVC plastic increased paste is a paste -like dispersing system made of PVC paste resin, plasticizer, solid filling material, and other auxiliary agents. It is widely widely used for its production and processing with simple process, low cost, and high economic benefits.Focus, and is used in automotive, leather, ink, coatings, sealing, adhesives, building materials and other fields.For the automotive industry, PVC plastic increase paste is mainly used for processing to form a primer. In actual applications, it requires that it has good tactileness. During the use of (spray), it shows low viscosity due to high -speed cutting. It is easy to spray, flow, flow, flowPing, no flow after spraying. [0003] As the main functional reclamation of PVC plasticizing p...

Claims

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Application Information

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IPC IPC(8): C09C1/02C09C3/08C09D7/12
CPCC09C1/021C09C3/08C09D7/62
Inventor 莫冬丽朱勇颜干才谌业文罗元庆黄海昌何海梅
Owner GUANGXI HUANA NEW MATERIALS TECH CO LTD
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