Sericite composite used in transparent plastic master batch and preparation method

A composite material and sericite technology, which is applied in the field of filler modification, can solve the problems of poor UV resistance, low transparency, and unsatisfactory effects, etc., to achieve improved UV resistance, easy to obtain raw materials, and overcome natural grayish white color that is not easy to change Effect

Inactive Publication Date: 2018-09-07
CHENDU NEW KELI CHEM SCI CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0008] Sericite, which is widely used at present, has a natural off-white color that is not easy to change when it is used in plastic transparent masterbatches. When it is added to plastics, it has problems such as low transparency and poor UV resistance. At the same time, the existing modification technology is complicated in process, high in cost and ineffective. ideal

Method used

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  • Sericite composite used in transparent plastic master batch and preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Alkaline washing is performed on the sericite first, then pickling is performed, and then washed with clean water to obtain pretreated sericite; sodium phosphate solution is used for alkali washing; sulfuric acid solution is used for pickling;

[0032] (2) Grind the sericite pretreated in step (1) into superfine flaky powder, and then add it into water to make sericite slurry; the average particle size of the superfine flaky powder is 6 μm; the sericite slurry In the material, by weight, wherein: 36 parts of sericite, 64 parts of water;

[0033] (3) First prepare a zinc sulfate solution with a mass concentration of 44%, then add an oxalic acid complexing agent, and then adjust the pH value to 8 with ammonia water to obtain a zinc oxalate complex solution; in the zinc oxalate complex solution, by weight , wherein: 70 parts of zinc sulfate solution, 29 parts of oxalic acid complexing agent, 1 part of ammonia water;

[0034] (4) Add the zinc oxalate complex solution p...

Embodiment 2

[0037] (1) Alkaline washing is first performed on the sericite, then pickling, and then washed with water to obtain pretreated sericite; sodium carbonate solution is used for alkali washing; hydrochloric acid solution is used for pickling;

[0038] (2) Grind the sericite pretreated in step (1) into superfine flaky powder, and then add it into water to make sericite slurry; the average particle size of the superfine flaky powder is 3 μm; the sericite slurry In the material, by weight, wherein: 30 parts of sericite, 70 parts of water;

[0039] (3) First prepare a zinc sulfate solution with a mass concentration of 40%, then add an oxalic acid complexing agent, and then adjust the pH value to 8.5 with ammonia water to obtain a zinc oxalate complex solution; in the zinc oxalate complex solution, by weight , wherein: 71 parts of zinc sulfate solution, 28 parts of oxalic acid complexing agent, 1 part of ammonia water;

[0040](4) Add the zinc oxalate complex solution prepared in ste...

Embodiment 3

[0043] (1) The sericite is firstly washed with alkali, then pickled, and then washed with clean water to obtain pretreated sericite; the alkali wash uses sodium hydroxide solution; the pickle uses hydrofluoric acid solution;

[0044] (2) Grind the sericite pretreated in step (1) into superfine flaky powder, then add it into water to make sericite slurry; the average particle size of the superfine flaky powder is 10 μm; sericite slurry In the material, by weight, wherein: 40 parts of sericite, 60 parts of water;

[0045] (3) First prepare a zinc sulfate solution with a mass concentration of 50%, then add an oxalic acid complexing agent, and then adjust the pH value to 8 with ammonia water to obtain a zinc oxalate complex solution; in the zinc oxalate complex solution, the , wherein: 66 parts of zinc sulfate solution, 32 parts of oxalic acid complexing agent, 2 parts of ammonia water;

[0046] (4) Add the zinc oxalate complex solution prepared in step (3) into the sericite slur...

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Abstract

The invention relates to the field of filler modification and discloses a sericite composite used in transparent plastic master batch and a preparation method. The method comprises the preparation steps as follows: (1) performing alkaline washing, acid washing and thorough clear water washing on sericite to obtain pretreated sericite; (2) grinding the pretreated sericite and adding the ground sericite to water to produce sericite slurry; (3) adding an oxalic acid complexing agent and ammonia water to a zinc sulfate solution to prepare a zinc oxalate complex solution; (4) performing heating andstirring; (5) performing filtration, washing drying and calcinations to prepare the sericite composite coated with zinc oxide on the surface. Compared with common sericite, the prepared sericite composite has higher transparency when added to plastic, the anti-ultraviolet property is greatly improved, raw materials are easy to obtain, the composite is pollution-free and lower in cost, the preparation process is simple, safe and reliable and easy to implement and control, the product quality is stable, and the composite is suitable for large-scale popularization and application.

Description

technical field [0001] The invention relates to the field of filler modification, and discloses a sericite composite material used in plastic transparent master batches and a preparation method. Background technique [0002] Due to the advantages of light weight, good toughness, easy molding, and low cost, plastics are increasingly used instead of glass in modern industry and daily products, especially in optical instruments and packaging industries, and the development is particularly rapid. Transparent plastics must first have high transparency, and secondly, they must have certain strength and wear resistance, be able to resist impact, have better heat resistance, have better chemical resistance, and have lower water absorption. Only in this way can they meet the requirements of transparency in use. demand and remain unchanged for a long time. However, pure plastics often have poor performance and high cost. Therefore, transparent masterbatches added with inorganic fille...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/10C08K9/00C08K3/34C08L23/06C08J3/22
CPCC08K9/10C08J3/226C08J2423/06C08K3/34C08K9/00
Inventor 陈庆司文彬
Owner CHENDU NEW KELI CHEM SCI CO LTD
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