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High-specific-gravity reinforced composite powder filler and preparation method thereof

A reinforced composite and powder filler technology, applied in fibrous fillers, chemical instruments and methods, dyed polymer organic compound treatment, etc.

Active Publication Date: 2020-10-27
JIANGXI GUANGYUAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the application of thermoplastics is developing in the direction of light weight, but there are also many thermoplastics that hope to have a higher specific gravity to achieve better application prospects, and at the same time meet higher strength. This material is usually used to replace metal Products, generally rely on the addition of high specific gravity inorganic powder (such as barium sulfate, etc.) to meet the requirements, there is no report on the method of combining barium sulfate and wollastonite

Method used

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  • High-specific-gravity reinforced composite powder filler and preparation method thereof
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  • High-specific-gravity reinforced composite powder filler and preparation method thereof

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preparation example Construction

[0023] The invention provides a method for preparing a high specific gravity reinforced composite powder filler, comprising the following steps:

[0024] Mix wollastonite powder, barium chloride and water to obtain a primary slurry;

[0025] mixing the primary slurry with a composite dispersant, and performing wet grinding to obtain a secondary slurry;

[0026] mixing the secondary slurry with sodium sulfate, performing liquid phase deposition and coating to obtain a composite powder;

[0027] The composite powder is subjected to surface modification to obtain a high specific gravity reinforced composite powder filler.

[0028] In the present invention, unless otherwise specified, the required preparation materials are commercially available products well known to those skilled in the art.

[0029] The invention mixes wollastonite powder, barium chloride and water to obtain primary slurry. In the present invention, the wollastonite powder is preferably prepared from wollast...

Embodiment 1

[0044] Mix 5 tons of wollastonite powder and barium chloride with water at a mass ratio of 1:5 to obtain a first-grade slurry with a solid content of 40%;

[0045] The primary slurry is sent into a vertical mixer, and a composite dispersant is added (the quality of sodium polycarboxylate is 3‰ of the quality of wollastonite powder, the quality of sodium dodecylbenzenesulfonate is 3% of the quality of wollastonite powder 4‰), carry out wet grinding, and the parameters of wet grinding are: the vertical mixer speed is 2500r / min, stirring for 2h, controlling the slurry temperature to be 80°C, and obtaining the secondary slurry (the material particles in the secondary slurry The diameter is 6000 mesh);

[0046] Transfer the secondary slurry into the slurry storage tank, add sodium sulfate (the molar ratio to barium chloride is 1:1) and stir for 1h at a stirring speed of 300r / min, and control the temperature of the slurry during the stirring process at 120°C for liquid phase deposi...

Embodiment 2

[0049] Mix 5 tons of wollastonite powder and barium chloride with water at a mass ratio of 1:6 to obtain a first-grade slurry with a solid content of 45%;

[0050] The primary slurry is sent into a vertical mixer, and a composite dispersant is added (the quality of sodium polycarboxylate is 4‰ of the quality of wollastonite powder, the quality of sodium dodecylbenzenesulfonate is 4‰ of the quality of wollastonite powder) 5‰), carry out wet grinding, and the parameters of wet grinding are: the vertical mixer speed is 2500r / min, stirring for 2h, controlling the slurry temperature to be 80°C, and obtaining the secondary slurry (the material particles in the secondary slurry The diameter is 6000 mesh);

[0051] Transfer the secondary slurry into the slurry storage tank, add sodium sulfate (the molar ratio to barium chloride is 1.1:1) and stir for 1h at a stirring speed of 300r / min, and control the temperature of the slurry during the stirring process at 120°C for liquid phase dep...

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Abstract

The invention provides a high-specific-gravity reinforced composite powder filler and a preparation method thereof, and belongs to the technical field of fine chemical engineering. The preparation method of the high-specific-gravity reinforced composite powder filler comprises the following steps: mixing wollastonite powder, barium chloride and water to obtain primary slurry; mixing the primary slurry with a composite dispersing agent, and carrying out wet grinding to obtain secondary slurry; mixing the secondary slurry with sodium sulfate, and carrying out liquid phase deposition coating to obtain composite powder; and carrying out surface modification on the composite powder to obtain the high-specific-gravity reinforced composite powder filler. The wollastonite powder is used as a raw material, coating a layer of barium sulfate on the surface of wollastonite powder is performed by adopting a liquid phase deposition method; the reinforcing effect of wollastonite and the high specificgravity characteristic of barium sulfate can be integrated into the composite powder filler, the prepared composite powder filler has excellent reinforcing effect and high specific gravity characteristic, and the mechanical property and specific gravity of ABS products can be remarkably enhanced when the composite powder filler is applied to the ABS products.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to a high specific gravity reinforced composite powder filler and a preparation method thereof. Background technique [0002] Barium sulfate is a white amorphous powder with a melting point of 1580°C and a specific gravity of 4.3 to 4.7. It is widely used because of its high whiteness, high gloss, strong chemical inertness, acid and alkali resistance, good stability, and the ability to absorb harmful rays. It is used in plastic products, especially its unique high specific gravity, making it an ideal and promising weighting filler. [0003] Wollastonite is a chain-like metasilicate mineral, which belongs to the triclinic crystal system and has a fibrous and needle-like structure. Generally, it is acid-resistant, alkali-resistant, and chemically resistant. It has low oil absorption, low electrical conductivity, and good insulation. Because of its length-to-diameter ratio of (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/28C09C3/06C09C3/08C09C3/10C09C3/12C09C3/04C08K13/06C08K9/04C08K9/06C08K9/08C08K3/34C08K3/16C08L55/02
CPCC08K3/16C08K3/34C08K9/04C08K9/06C08K9/08C08K13/06C08K2003/162C09C1/28C09C3/006C09C3/041C09C3/063C09C3/08C09C3/10C09C3/12C08L55/02
Inventor 宋建强温声平彭鹤松邓克文邓鹏肖毓秀
Owner JIANGXI GUANGYUAN CHEM