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Preparation method of modified polycarbonate material

A polycarbonate and water-based polyurethane technology, which is used in the preparation of modified polycarbonate materials, can solve the problems of people or objects being easily damaged by ultraviolet rays, easy to photoaging, and poor in ultraviolet shielding function, so as to improve the ultraviolet shielding ability. , Improve the effect of light aging resistance and tensile properties

Inactive Publication Date: 2021-05-14
惠州新彩工程塑料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PC materials have disadvantages such as poor ultraviolet shielding function and easy photoaging after ultraviolet rays. When they are manufactured into transparent protective masks, car windows, aerospace, aircraft structural parts, etc., they cannot completely shield ultraviolet rays. People behind the device Or items are vulnerable to ultraviolet rays. With the rapid development of nanoscience, especially the emergence of some inorganic rigid nanoparticles with ultraviolet absorption, the method of compounding nanoparticles can improve the ultraviolet blocking ability of PC transparent materials.
In addition, general polycarbonate cannot meet the requirements of aerospace, aircraft structural parts and other products for corrosion resistance, rigidity and flame retardancy, so it needs to be improved

Method used

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  • Preparation method of modified polycarbonate material
  • Preparation method of modified polycarbonate material
  • Preparation method of modified polycarbonate material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: A kind of preparation method of modified polycarbonate material.

[0023] refer to figure 1 Shown, a kind of preparation method of modified polycarbonate material specifically comprises the steps:

[0024] S1, the preparation of modified nano titanium dioxide, the TiCL of 0.6kg 4 Dissolve in 6L of absolute methanol to obtain a zinc salt methanol solution with a concentration of 10%, then dissolve 0.3kg of KOH in 6L of absolute ethanol to obtain a concentration of 5% precipitant ethanol solution, wherein the control anhydrous The adding volume ratio of methyl alcohol and dehydrated alcohol is 1:1, and precipitating agent ethanol solution is added dropwise to zinc salt methanol solution, keeps stirring, and in the stirring process, add 0.3kg of the horsetail that grafting ratio is 0.8% in this reaction solution. Anhydride-grafted polyethylene is used as a modifier, and after 2 hours of heat preservation, a small amount of deionized water is added to termin...

Embodiment 2

[0031] A preparation method of a modified polycarbonate material, specifically comprising the steps of:

[0032] S1, the preparation of modified nano titanium dioxide, the TiCL of 0.5kg 4 Dissolve in 10L of absolute methanol to obtain a zinc salt methanol solution with a concentration of 5%, and then dissolve 0.2kg of KOH in 10L of absolute ethanol to obtain a 2% ethanol solution of the precipitant, in which the anhydrous The adding volume ratio of methyl alcohol and dehydrated alcohol is 1:1, and precipitating agent ethanol solution is added dropwise to zinc salt methanol solution, keeps stirring, and in the stirring process, the horsetail that the grafting rate of 0.8% of 0.2kg is added in this reaction solution Anhydride-grafted polyethylene is used as a modifier, and after 2 hours of heat preservation, a small amount of deionized water is added to terminate the reaction, and the solid product prepared is centrifuged and washed, dried by rotary evaporation, and then ground ...

Embodiment 3

[0035] A preparation method of a modified polycarbonate material, specifically comprising the steps of:

[0036] S1, the preparation of modified nano titanium dioxide, the TiCL of 1kg 4 Dissolve in 5L of absolute methanol to obtain a zinc salt methanol solution with a concentration of 20%, then dissolve 0.5kg of KOH in 5L of absolute ethanol to obtain a concentration of 10% precipitant ethanol solution, wherein the control anhydrous The adding volume ratio of methyl alcohol and absolute ethanol is 1:1, and precipitating agent ethanol solution is added dropwise to zinc salt methanol solution, keeps stirring, and in the stirring process, the horsetail that the grafting rate of 0.8% of 0.4kg is added in this reaction solution Anhydride-grafted polyethylene is used as a modifier, and after 2 hours of heat preservation, a small amount of deionized water is added to terminate the reaction, and the solid product prepared is centrifuged and washed, dried by rotary evaporation, and the...

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Abstract

The invention provides a preparation method of a modified polycarbonate material. The preparation method specifically comprises the following steps: S1, preparing modified nano titanium dioxide; S2, preparing modified glass fibers; S3, preparing a self-made flame retardant; S4, adding the weighed polycarbonate into a sealed element bottle, adding a proper amount of dichloromethane, and magnetically stirring until particles are completely dissolved to form a transparent solution; adding the weighed modified nano titanium dioxide, modified glass fiber, self-made flame retardant and assistant into the transparent solution, mixing, magnetically stirring to form a uniform liquid-phase composite master batch, and finally drying to obtain a solid-phase modified polycarbonate composite master batch; and S5, adding the solid-phase modified polycarbonate composite master batch into a trace mixing extruder, and carrying out melt blending, extrusion and granulation. According to the modification method provided by the invention, the ultraviolet blocking capability, the light aging resistance, the comprehensive mechanical property, the rigidity and the flame retardant property of the polycarbonate material can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of polycarbonate production, in particular to a preparation method of a modified polycarbonate material. Background technique [0002] Polycarbonate (abbreviated as PC in English) is a high molecular polymer containing carbonate groups in the molecular chain. According to the structure of the ester group, it can be divided into aliphatic, aromatic, aliphatic-aromatic and other types. Among them, the low mechanical properties of aliphatic and aliphatic-aromatic polycarbonates limit their application in engineering plastics. PC is a linear carbonated polyester, and the carbonic acid groups in the molecule are alternately arranged with other groups. These groups can be aromatic, aliphatic, or both. Bisphenol A PC is the most important industrial product. [0003] As a thermoplastic engineering plastic, polycarbonate (PC) has the advantages of heat resistance, high strength, and good toughness, and is widely u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08K9/04C08K9/02C08K3/22C08K7/14C08K5/42
CPCC08K3/22C08K5/42C08K7/14C08K9/02C08K9/08C08K2201/011C08L2201/02C08L2201/08C08L69/00
Inventor 杨新中
Owner 惠州新彩工程塑料科技有限公司
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