Method for preparing ardealite filler for producing PVC (PVC) material

A PVC material, phosphogypsum technology, applied in the directions of fibrous fillers, chemical instruments and methods, inorganic pigment treatment, etc., can solve the adverse effects of filler processing performance products application performance, affect the PVC and phosphogypsum cross-linked interface stability, Increase the cost of comprehensive utilization of phosphogypsum and other issues, and achieve the effect of being beneficial to optical properties, saving the amount of processing raw materials, and having good flow properties

Inactive Publication Date: 2016-02-24
GUIZHOU KAILIN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology involves chemically removing calcium from gypsum by creating highly pure forms of this material called orthoheptanoidite (PCA). By doing this process, we get ridged calcite clay containing less impurities than traditional methods like precipitating or ion exchange techniques. These purified formations are useful because they help prevent damage caused during manufacturing processes such as injection into pipes made of polyvinyl chloride (PPV) vinyl flooring. Additionally, these compositions may be modified with different types of acrylic monomers to achieve specific desired characteristics. Overall, our technical results include improved quality control over phoshorsiate hydration products while maintain their excellent mechanical strength and compatibility with various applications related thereto.

Problems solved by technology

This patented describes how phosphorus oxychemistry works effectively with certain types of chemical substances called phosphonium salts or polysulfonates found naturally at sea level around the world. These compounds are useful because they have many benefits including being able to enhance polymer properties like tensile stress crack initiation point temperature, compression set values, waterproofness, durability against damage from weather conditions, reducing greenhouse gas emissions during global warming events, increasing recycled value by crushing them downstream, making use of this valuable natural source of raw materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method for a phosphogypsum filler used in the production of PVC materials: after mixing 500g of phosphogypsum with 750g of water to obtain a phosphogypsum slurry, adding an alkaline calcium-increasing solution accounting for 2.7% of the mass of the phosphogypsum, soaking for 1 hour, Heating at 180°C for 23 minutes, then adding hydroxypropyl methylcellulose to adjust the pH of the material to 7.0, heating in microwave at 50°C for 3 minutes, sending it into a layered filter for stirring, standing still, and removing the upper layer liquid, drying the material in the lower layer to obtain phosphogypsum filler.

[0021] The pH of the alkaline calcium-increasing liquid is 11.

[0022] The alkaline calcium-increasing liquid is formed by mixing sugar slag and calcium hydroxide in a mass ratio of 1:3.

Embodiment 2

[0024] A preparation method for phosphogypsum filler used in the production of PVC materials: mix 500g of phosphogypsum with 500g of water to obtain a phosphogypsum slurry, add an alkaline calcium-increasing solution accounting for 3% of the mass of phosphogypsum, and soak for 1.3 hours , heated at a temperature of 150°C for 30 minutes, then added hydroxypropyl methylcellulose to adjust the pH of the material to 7.3, heated with microwaves at a temperature of 100°C for 5 minutes, and sent it to a layered filter for stirring and standing still to remove The upper layer is liquid, and the material in the lower layer is dried to obtain phosphogypsum filler.

[0025] The pH of the alkaline calcium-increasing liquid is 10.

[0026] The alkaline calcium-increasing liquid is formed by mixing industrial waste and calcium hydroxide at a mass ratio of 1:2.

[0027] The industrial waste is composed of 30% calcium carbide slag, 35% sugar slag and 35% papermaking black liquor according to th

Embodiment 3

[0029] A preparation method for phosphogypsum filler used in the production of PVC materials: mix 400g of phosphogypsum with 800g of water to obtain a phosphogypsum slurry, add an alkaline calcium-increasing liquid accounting for 2.5% of the mass of phosphogypsum, and soak for 1.5 hours , heated at 200°C for 30 minutes, then added hydroxypropyl methylcellulose to adjust the pH of the material to 7.6, heated with microwaves at a temperature of 78°C for 4 minutes, sent it to a layered filter for stirring, and after standing still, removed The upper layer is liquid, and the material in the lower layer is dried to obtain phosphogypsum filler.

[0030] The pH of the alkaline calcium-increasing liquid is 8.

[0031] The alkaline calcium-increasing liquid is formed by mixing industrial waste and calcium hydroxide in a mass ratio of 1:1.

[0032] The industrial waste is composed of 50% carbide slag and 50% papermaking black liquor according to the mass fraction ratio.

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PUM

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Abstract

The invention relates to the field of production filler for polyvinyl chloride (PVC) materials and particularly relates to a method for preparing ardealite filler for producing a PVC material. The method comprises the steps of mixing ardealite and water so as to obtain ardealite slurry, adding an alkali calcium increasing solution, which accounts for 2.5-3% the mass of the ardealite, into the ardealite slurry, then, carrying out soaking for 1-1.5 hours, then, carrying out high-temperature heating for 15-30 minutes, then, adding hydroxypropyl methylcellulose into the material so as to adjust the pH of the material to 7.0 to 7.6, then, carrying out microwave heating for 3-5 minutes, then, feeding the heated material to a layering filter tank, carrying out stirring and standing, then, removing supernatant, and baking a lower-layer material, thereby obtaining the ardealite filler. According to the method disclosed by the invention, the steps are simple, the operation is easy, the equipment requirements are low, the energy consumption and time consumption are low, the physicochemical properties of the filler are good, and the lipophilicity of the ardealite is improved, so that macromolecular substances are adsorbed to the surface of the ardealite, and then, the polarity difference between the ardealite and macromolecules is alleviated.

Description

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Claims

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Application Information

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Owner GUIZHOU KAILIN GRP CO LTD
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