Low-temperature-impact-resistant high-transmittance flame-retardant polycarbonate composite material and preparation method thereof

A flame-retardant polycarbonate and composite material technology, applied in the field of polymer materials, can solve the problems of low birefringence, decreased transparency, high birefringence of polycarbonate, etc., and achieve small birefringence and high glass transition temperature , the effect of high refractive index

Pending Publication Date: 2020-05-29
宁波坚锋新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is aimed at the materials obtained by modifying pure transparent polycarbonate in the prior art, which generally cannot withstand low-temperature impact, and the transparency of materials obtained by modifying polycarbon

Method used

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  • Low-temperature-impact-resistant high-transmittance flame-retardant polycarbonate composite material and preparation method thereof
  • Low-temperature-impact-resistant high-transmittance flame-retardant polycarbonate composite material and preparation method thereof
  • Low-temperature-impact-resistant high-transmittance flame-retardant polycarbonate composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0068] The preparation of modified montmorillonite nanomaterial in the present embodiment is as follows:

[0069] (1) Mix sodium-montmorillonite (Na-MMT) and deionized water according to the ratio of solid-liquid ratio 1g / 100ml, and ultrasonically vibrate at room temperature for 1 hour to destroy the layered structure of sodium-montmorillonite, so that It is uniformly dispersed in deionized water to form a premix, then mix the premix and deionized water at a volume ratio of 1:5, heat to 80°C and maintain this temperature, stir with a stirrer for 40min, and form montmorillonite Suspension: mix triphenylbutylphosphonium bromide (BuTPP-Br) and deionized water according to the ratio of solid to liquid ratio 2g / 100ml, after completely dissolving, a BuTPP-Br solution is formed;

[0070] (2) According to the volume ratio of BuTPP-Br solution and montmorillonite suspension of 1:15, gradually add BuTPP-Br solution to the montmorillonite suspension, and then keep the temperature at 80°C...

Embodiment 2

[0073] The preparation of modified montmorillonite nanomaterial in the present embodiment is as follows:

[0074] (1) Mix sodium-montmorillonite (Na-MMT) and deionized water according to the ratio of solid-to-liquid ratio of 0.8g / 100ml, and ultrasonically vibrate at room temperature for 1.5 hours to destroy the layered structure of sodium-montmorillonite, Make it evenly dispersed in deionized water to form a premix, then mix the premix and deionized water at a ratio of 1:6 by volume, heat to 70°C and maintain this temperature, stir with a stirrer for 50min to form montmorillonite Soil suspension; triphenylbutylphosphonium bromide (BuTPP-Br) and deionized water are mixed according to the ratio of solid-to-liquid ratio 1.6g / 100ml, after completely dissolving, a BuTPP-Br solution is formed;

[0075] (2) According to the ratio of BuTPP-Br solution and montmorillonite suspension volume ratio of 1:17, gradually add BuTPP-Br solution to the montmorillonite suspension, and then keep t...

Embodiment 3

[0078] The preparation of modified montmorillonite nanomaterial in the present embodiment is as follows:

[0079] (1) Mix sodium-montmorillonite (Na-MMT) and deionized water according to the ratio of solid-to-liquid ratio of 1.2g / 100ml, and ultrasonically vibrate at room temperature for 0.5 hours to destroy the layered structure of sodium-montmorillonite, Make it evenly dispersed in deionized water to form a premix, then mix the premix and deionized water at a volume ratio of 1:4, heat to 90°C and maintain this temperature, stir with a stirrer for 30min to form montmorillonite Soil suspension; triphenylbutylphosphonium bromide (BuTPP-Br) and deionized water are mixed according to the ratio of solid-to-liquid ratio of 2.5g / 100ml, after completely dissolving, a BuTPP-Br solution is formed;

[0080] (2) According to the ratio of BuTPP-Br solution and montmorillonite suspension volume ratio of 1:13, gradually add BuTPP-Br solution to the montmorillonite suspension, and then keep t...

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Abstract

The invention relates to a low-temperature-impact-resistant high-transmittance flame-retardant polycarbonate composite material and a preparation method thereof, and belongs to the technical field ofhigh polymer materials. The composite material comprises the following components in percentage by weight: 29.05-69.45% of polycarbonate, 30-70.3% of fluorenyl polyester, 0.04-0.4% of flame retardantand 0.1-0.3% of antioxidant, wherein the fluorenyl polyester is aromatic polyester resin with a main chain containing at least one fluorenyl group; the polycarbonate composite material disclosed by the invention is resistant to low-temperature impact, high in transparency, good in flame-retardant effect and low in birefringence.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a low-temperature impact-resistant high-permeability flame-retardant polycarbonate composite material and a preparation method thereof. Background technique [0002] Polycarbonate (PC) is an engineering plastic with high impact resistance, heat resistance, transparency, and V2 flame retardant properties. It has excellent comprehensive properties and is widely used in electronics, electrical appliances, automobiles, rail transit, computers, and machinery manufacturing. and other technical fields. However, the polycarbonate material has a large molecular structure, is difficult to process, and is prone to stress cracking. The impact performance will drop sharply at low temperatures, and the flame retardant level of unmodified polycarbonate is V2, which cannot meet the flame retardant requirements of V0 level. In addition, there are problems in the existing transparent flam...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L67/02C08L83/04C08K13/06C08K9/04C08K3/34C08K5/42
CPCC08L69/00C08L67/02C08L2201/02C08L2201/10C08L2205/03C08L83/04C08K13/06C08K9/04C08K3/346C08K5/42
Inventor 吴剑波徐禄波王旭范方虹
Owner 宁波坚锋新材料有限公司
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