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High-gloss low-filling halogen-free hybrid flame-retardant PC (polycarbonate) material as well as preparation and application thereof

A low-filling, high-gloss technology, applied in the low-filling, halogen-free hybrid flame-retardant PC material and its preparation and application, high-gloss field, can solve the problem of smoke density and heat release not meeting the requirements, adding more fillers, etc. problem, to achieve the effect of reducing smoke density and heat release, improving compatibility and high surface gloss

Active Publication Date: 2022-04-12
上海品诚控股集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a high-gloss, low-filling halogen-free hybrid flame-retardant PC material and its preparation and application, so as to overcome the problems of polycarbonate material filler addition, smoke density and heat dissipation in the prior art. Release defects that do not meet requirements

Method used

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  • High-gloss low-filling halogen-free hybrid flame-retardant PC (polycarbonate) material as well as preparation and application thereof
  • High-gloss low-filling halogen-free hybrid flame-retardant PC (polycarbonate) material as well as preparation and application thereof
  • High-gloss low-filling halogen-free hybrid flame-retardant PC (polycarbonate) material as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0053] The preparation method of PC material comprises:

[0054] According to the proportioning of Table 1 and Table 2, mix other components except methyl methacrylate-styrene grafted nano-titanium dioxide (or nano-titanium dioxide) and zinc borate, and feed them into the main feed of the twin-screw extruder. Feed methyl methacrylate-styrene grafted nano-titanium dioxide (or nano-titanium dioxide) and zinc borate into the twin-screw extruder from the side feed port, and melt extrude to obtain PC material, wherein the extrusion temperature is 260°C-280°C ℃.

[0055] Performance Testing:

[0056] (1) Smoke density (Ds4min): according to ISO5659-2 standard, 50kW / m 2 Flameless, hazard level: HL1≤600, HL2≤300, HL3≤150;

[0057] (2) Smoke density (VOF (4min)): according to ISO5659-2 standard, 50kW / m 2 Flameless, hazard level: HL1≤1200, HL2≤600, HL3≤300;

[0058] (3) Heat release (MARHE): According to ISO5660-1 standard, 50kW / m 2 , hazard level: HL2≤90kW / m 2 , HL3≤60kW / m 2 ; ...

Embodiment 3

[0067] In Example 3, the flame retardant 3 content is higher than that in Example 2, and the heat release in Example 3 is reduced, and the smoke density is increased. The carbon layer expands to reduce the heat release, reducing the heat release to below 60, reaching 2 heat release.

Embodiment 6

[0068] In Example 6 and Example 5, the content of flame retardant 2 is higher than that of Example 4, and the heat release of Example 5 and Example 6 decreases gradually, and the smoke density still rises slowly. This is because flame retardant 2 has the effect of isomerized PC. Therefore, its smoke density and heat release are high.

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Abstract

The invention relates to a high-gloss low-filling halogen-free hybrid flame-retardant PC (polycarbonate) material as well as preparation and application thereof. The material comprises the following components in parts by weight: 55-85 parts of polycarbonate; 5 to 14 parts of copolymerized polycarbonate; 1-10 parts of a flame retardant 1; 5-15 parts of a flame retardant 2; 1-10 parts of a flame retardant 3; 2 to 3 parts of methyl methacrylate-styrene grafted nano titanium dioxide; and 1-2 parts of zinc borate. The material has the advantages of high-grade flame retardance, low filling and high gloss, and meanwhile, the smoke density and heat release of EN45545-2 R1 HL2 or above are achieved.

Description

technical field [0001] The invention belongs to the field of polycarbonate materials and their preparation and application, in particular to a high-gloss, low-filling halogen-free hybrid flame-retardant PC material and its preparation and application. Background technique [0002] Polycarbonate has good flame retardancy, high heat resistance, impact resistance, and low density, and is widely used in electronic appliances, automobiles, rail transit, aerospace and other fields. The raw materials currently used in wall panels require a flame retardant grade above EN45545-2 R1 HL2, but when the heat release is reduced, the smoke density may increase. There are usually three schemes. The first scheme is to add carbon-forming copolymerization raw materials such as polyetherimide and bisphenol raw material copolymers containing imide groups to PC. grams, Covestro, Teijin and other companies, and the impact strength of the notch is 10kJ / m 2 In the following, not only the high-impa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L83/04C08K5/521C08K5/5399C08K9/10C08K3/22C08K3/38C08K13/06
Inventor 马海丰陈增军刘应刘淑辉冯俊伟
Owner 上海品诚控股集团有限公司
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