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Silica sol modified impact-resistant ceramic-imitating plastic and preparation method

A silica sol and impact-resistant technology is applied in the field of impact-resistant porcelain-like plastics modified by silica sol and its preparation. Effect

Inactive Publication Date: 2019-03-29
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the current methods of adding barium sulfate and other fillers to realize imitation ceramic plastics, there are technical problems such as poor processability and unsatisfactory performance. Processability and impact toughness of plastics

Method used

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  • Silica sol modified impact-resistant ceramic-imitating plastic and preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Put the barium sulfate particles in a ball mill, and use grinding to make the barium sulfate raw material particles have micro-cracks to obtain barium sulfate with micro-cracks;

[0033] (2) Add the organic silicon source to absolute ethanol, heat up the water bath and stir, then add deionized water, and under the premise of continuous stirring in the water bath, use acid to adjust the pH of the system to acidic, and let it stand for reaction to obtain a silica sol precursor The organosilicon source is polysiloxane; the stirring temperature in the water bath is 46°C, the stirring speed is 360rpm, and the time is 68min; the acid is nitric acid; in the preparation of the silica sol precursor, absolute ethanol, organosilicon source, deionized water , the mass ratio of acid is 100:76:70:16;

[0034] (3) Atomize and deposit the silica sol precursor on the surface of barium sulfate with microcracks, and fully penetrate into the inside of the particles, then collect the pa...

Embodiment 2

[0040] (1) Put the barium sulfate particles in a ball mill, and use grinding to make the barium sulfate raw material particles have micro-cracks to obtain barium sulfate with micro-cracks;

[0041] (2) Add the organic silicon source to absolute ethanol, heat up the water bath and stir, then add deionized water, and under the premise of continuous stirring in the water bath, use acid to adjust the pH of the system to acidic, and let it stand for reaction to obtain a silica sol precursor The organosilicon source is polydimethylsiloxane; the temperature of the water bath stirring is 40°C, the stirring speed is 300rpm, and the time is 80min; the acid is sulfuric acid; in the preparation of the silica sol precursor, absolute ethanol, organosilicon source, The mass ratio of deionized water and acid is 100:50:40:10;

[0042] (3) Atomize and deposit the silica sol precursor on the surface of barium sulfate with microcracks, and fully penetrate into the inside of the particles, then co...

Embodiment 3

[0046] (1) Put the barium sulfate particles in a ball mill, and use grinding to make the barium sulfate raw material particles have micro-cracks to obtain barium sulfate with micro-cracks;

[0047] (2) Add the organic silicon source to absolute ethanol, heat up the water bath and stir, then add deionized water, and under the premise of continuous stirring in the water bath, use acid to adjust the pH of the system to acidic, and let it stand for reaction to obtain a silica sol precursor The organosilicon source is tetramethylsilane; the stirring temperature in the water bath is 50°C, the stirring speed is 400rpm, and the time is 60min; the acid is hydrochloric acid; in the preparation of the silica sol precursor, absolute ethanol, organosilicon source, deionized water , the mass ratio of acid is 100: 60: 80:20;

[0048] (3) Atomize and deposit the silica sol precursor on the surface of barium sulfate with microcracks, and fully penetrate into the inside of the particles, then c...

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Abstract

The invention provides a silica sol modified impact-resistant ceramic-imitating plastic and a preparation method. The preparation method includes: firstly mixing an organic silicon source, anhydrous ethanol and water for reaction to obtain a silica sol precursor, then performing coating on a barium sulfate surface ground to cracking, finally mixing the silica sol coated barium sulfate with polybutylene terephthalate (PBT), a maleic anhydride grafted ethylene-octene copolymer, a coupling agent, a lubricant, a weather resistance agent and an antioxidant evenly, and conducting screw extrusion, thus obtaining the ceramic-imitating plastic. According to the ceramic-imitating plastic provided by the invention, the added barium sulfate material has good compatibility with PBT resin, barium sulfate has good dispersibility in the resin matrix, the filling amount can be properly increased, and the cost is reduced. At the same time, because of the silica sol coating layer on the plastic surface,external impact can be effectively cushioned, and the impact resistance of the ceramic-imitating plastic is improved.

Description

technical field [0001] The invention relates to the technical field of porcelain-like plastics, in particular to a silica sol-modified shock-resistant porcelain-like plastic and a preparation method thereof. Background technique [0002] With the improvement of the quality of modern life, people pay more and more attention to the decoration of the living environment. The decoration of the ground and interior and exterior walls is more and more naturalized, so ceramic tiles are often used for the laying of the ground and interior and exterior walls. Ceramics currently used in daily life are mostly made of clay or a mixture containing clay as mud mixing, shaped by a spiral vacuum extruder, cut into mud embryos and then calcined. The production process requires the use of precious soil resources. And it will consume a lot of energy, produce a lot of waste, and destroy the natural ecology. Therefore, it has become an obvious trend to develop new materials with natural environm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L51/06C08K9/10C08K3/30
CPCC08L67/02C08K2003/3045C08L51/06C08K9/10C08K3/30
Inventor 陈庆昝航
Owner CHENDU NEW KELI CHEM SCI CO LTD
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