Method for preparing bismuth yellow hybrid pigment for polymer coloring and reinforcing from mixed-dimension attapulgite clay

A technology of attapulgite clay and attapulgite, applied in chemical instruments and methods, vanadium compounds, fibrous fillers, etc., can solve the problems of high preparation cost, high energy consumption, low pigment yield, etc., and achieve high yield , the effect of low energy consumption

Pending Publication Date: 2022-04-22
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0004] At present, the preparation technology of clay mineral-based bismuth yellow hybrid pigment mainly includes solid-phase method and liquid-phase method, among which the solid-phase method mostly uses mechanochemical methods such as high-energy ball milling, which is an intermittent preparation technology and requires high energy consumption; The pigment obtained by the phase method has small particle size and high purity, and the calcination temperature is lower than that of the solid-state reaction and is easy to control, but the preparation process is complicated, the preparation cost is high, the pigment yield is relatively low, and a large amount of waste liquid is produced.

Method used

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  • Method for preparing bismuth yellow hybrid pigment for polymer coloring and reinforcing from mixed-dimension attapulgite clay
  • Method for preparing bismuth yellow hybrid pigment for polymer coloring and reinforcing from mixed-dimension attapulgite clay
  • Method for preparing bismuth yellow hybrid pigment for polymer coloring and reinforcing from mixed-dimension attapulgite clay

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Experimental program
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Effect test

Embodiment 1

[0036] 60 g of natural mixed-dimensional attapulgite clay, 53.90 g of bismuth nitrate and 13.00 g of ammonium metavanadate were extruded into a differential-speed co-rotating twin-screw extruder to obtain a precursor. After crystallization at 700 °C for 120 min, Pulverize the base bismuth yellow hybrid pigment. On this basis, 1 mL of vinyl tris (2-methoxyethoxy) silane was diluted with 5 mL of absolute ethanol, then mixed with bismuth yellow hybrid pigment and dried to constant weight to obtain polymeric Mixed-dimensional attapulgite clay-based bismuth yellow hybrid pigment for coloring and reinforcement of materials. The corresponding samples are respectively marked as S-1, which L * , a * , b * See Table 1 for color parameters.

Embodiment 2

[0038] 70 g of mixed-dimensional attapulgite clay, 48.8 g of bismuth nitrate, 31.2 g of bismuth chloride, 23.4 g of ammonium metavanadate and 12.1 g Sodium molybdate was put into a co-rotating twin-screw extruder to extrude the precursor to obtain the precursor, and after crystallization at 500°C for 90 min, it was pulverized to obtain the bismuth yellow hybrid pigment. On this basis, 0.8 mL of vinyltris(2-methoxyethoxy)silane and 0.7 mL of 3-glycidyloxypropyltrimethoxysilane were mixed and diluted with 8 mL of absolute ethanol, and then Mixed with bismuth yellow hybrid pigment and dried to constant weight to prepare mixed-dimensional attapulgite clay-based bismuth yellow hybrid pigment for polymer coloring and reinforcement. The corresponding samples are respectively marked as S-2, which L * , a * , b * See Table 1 for color values.

Embodiment 3

[0040] Mixed dimensional attapulgite clay 50 g, 64.1 g bismuth ammonium citrate, 70.61 bismuth sulfate, 17.55 1 g of ammonium metavanadate and 12.10 g of sodium molybdate were put into a double-stage twin-screw extruder to extrude the precursor to obtain the precursor, and after crystallization at 500 °C for 180 min, the bismuth yellow hybrid pigment was obtained by crushing. On this basis, 3 mL of vinyl tris (2-methoxyethoxy) silane was diluted with 10 mL of absolute ethanol, then mixed with bismuth yellow hybrid pigment and dried to constant weight to obtain a polymer Mixed-dimensional attapulgite clay-based bismuth yellow hybrid pigment for coloring and reinforcement of materials. The corresponding samples are respectively marked as S-3, which L * , a * , b * See Table 1 for color values.

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Abstract

The invention provides a method for preparing a bismuth yellow hybrid pigment for polymer coloring and reinforcing by using mixed-dimension attapulgite clay, which comprises the following steps: adding the mixed-dimension attapulgite clay, a bismuth source and a vanadium source into a twin-screw extruder, extruding by using the twin-screw extruder without or after adding a molybdenum source to obtain a precursor, and crystallizing at a high temperature of 500-900 DEG C for 30-180 minutes to obtain the bismuth yellow hybrid pigment. The preparation method comprises the following steps: diluting a silane coupling agent with absolute ethyl alcohol, mixing the diluted silane coupling agent with the bismuth yellow hybrid pigment, and drying to constant weight, thereby obtaining the mixed-dimension attapulgite clay-based bismuth yellow hybrid pigment for polymer coloring and reinforcing. The mixed-dimension attapulgite clay-based bismuth yellow hybrid pigment is prepared by adopting a double-screw extruder, so that the technical problems of intermittent production and high energy consumption of a traditional solid-phase method are solved, and the defects of low yield, more wastes and complicated steps of a liquid-phase method are also avoided. The method disclosed by the invention is low in energy consumption, high in yield, green, clean, low in production cost and suitable for industrial continuous production.

Description

technical field [0001] The invention relates to a method for preparing bismuth yellow hybrid pigments for polymer coloring and reinforcement from mixed-dimensional attapulgite clay, which belongs to the preparation technology of nanometer hybrid pigments. Background technique [0002] As a carrier of color, pigment is its basic attribute, so it is widely used in the coloring of polymer substrates such as plastics and rubber. However, most of the pigments only have coloring function and make little contribution to the mechanical properties and thermal stability of the polymer matrix. For this reason, in the process of using the pigment in the polymer matrix, it is generally necessary to compound and introduce different inorganic fillers to improve the mechanical properties and thermal stability of the polymer matrix. [0003] Bismuth yellow is a high-performance and environmentally friendly inorganic pigment with bismuth vanadate as the main color-forming component. Its refl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/00C09C3/04C09C3/06C09C3/12C01G31/00C08K3/24C08K3/34C08K9/06
CPCC09C1/0006C09C3/043C09C3/06C09C3/12C09C3/006C01G31/00C08K9/06C08K3/346C08K3/24C01P2002/72C01P2002/82C01P2002/88
Inventor 牟斌王爱勤吴磊王晓雯朱永峰许江
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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