High-concentration flame-retardant masterbatch applicable to polycarbonate and preparation method thereof

A technology of polycarbonate and flame retardant masterbatch, applied in the field of high-concentration flame retardant masterbatch and its preparation, can solve the problems of difficult and uniform distribution of flame retardants, save time and intermediate costs, have little impact on mechanical properties, and prevent Highly flammable effect

Inactive Publication Date: 2011-11-16
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] According to the problem that the flame retardant in the existing polycarbonate (PC) is difficult to be evenly distributed, the present invention provides a high-concentration flame-retardant masterbatch suitable for polycarbonate, which only needs to be directly mixed with polycarbonate for injection molding. There is no need to modify the pellets, reduce intermediate links, and save a lot of time and intermediate costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Provide a high-concentration flame-retardant masterbatch suitable for polycarbonate, which is composed of the following components by weight: polycarbonate (PC): 15%, bromotriazine: 80%, diphenyl phosphate: 4 %, antioxidant: 0.8%, lubricant: 0.2%.

[0024] Polycarbonate (PC): It is a powder with a melt flow rate of 15-20g / 10min. The antioxidant is β-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate, and the lubricant is ethylene bisstearamide.

[0025] The preparation method of the high-concentration flame-retardant masterbatch that is applicable to polycarbonate comprises the steps:

[0026] (1), first add polycarbonate and diphenyl phosphate into the high-speed batch mixer, add bromotriazine, antioxidant and lubricant and mix for 5 minutes;

[0027] (2) Then put the mixed premixed material in a twin-screw machine, melt and extrude it, and heat-cut and air-cool it to obtain a high-concentration flame-retardant masterbatch suitable for polycarbonate. The pro...

Embodiment 2

[0029] Provide a high-concentration flame-retardant masterbatch suitable for polycarbonate, which is composed of the following components by weight: polycarbonate (PC): 25%, bromotriazine: 70%, diphenyl phosphate: 4 %, antioxidant: 0.8%, lubricant: 0.2%.

[0030] Polycarbonate (PC): It is a powder with a melt flow rate of 15-20g / 10min. The antioxidant is β-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate, and the lubricant is stearic acid amide.

[0031] The preparation method of the high-concentration flame-retardant masterbatch that is applicable to polycarbonate comprises the steps:

[0032] (1), first add polycarbonate and diphenyl phosphate into the high-speed batch mixer, add bromotriazine, antioxidant and lubricant and mix for 5 minutes;

[0033] (2) Then put the mixed premixed material in a twin-screw machine, melt and extrude it, and heat-cut and air-cool it to obtain a high-concentration flame-retardant masterbatch suitable for polycarbonate. The process...

Embodiment 3

[0035] Provide a high-concentration flame-retardant masterbatch suitable for polycarbonate, which is composed of the following components by weight: polycarbonate (PC): 35%, bromotriazine: 60%, diphenyl phosphate: 4 %, antioxidant: 0.8%, lubricant: 0.2%.

[0036] Polycarbonate (PC): It is a powder with a melt flow rate of 15-20g / 10min. The antioxidant is tris(2,4-di-tert-butylphenol) phosphite, and the lubricant is ethylene bisstearamide.

[0037] The preparation method of the high-concentration flame-retardant masterbatch that is applicable to polycarbonate comprises the steps:

[0038] (1), first add polycarbonate and diphenyl phosphate into the high-speed batch mixer, add bromotriazine, antioxidant and lubricant and mix for 5 minutes;

[0039] (2) Then put the mixed premixed material in a twin-screw machine, melt and extrude it, and heat-cut and air-cool it to obtain a high-concentration flame-retardant masterbatch suitable for polycarbonate. The process is: twin-screw f...

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Abstract

The invention discloses a high-concentration flame-retardant masterbatch applicable to polycarbonate and a preparation method thereof. The masterbatch comprises the following components by weight percentage (%): 15-45% of polycarbonate (PC), 50-80% of bromo-triazine, 4% of diphenyl phosphate, 0.8% of antioxidant and 0.2% of lubricant. The high-concentration flame-retardant masterbatch provided by the invention has the advantages of low dosage, high flame retardancy, low influence on the mechanical properties of the polycarbonate and the like. The flame-retardant masterbatch is used only by direct mixing and injection molding with the PC, without modification and grain pumping, thus reducing intermediate processes and saving a lot of time and intermediate cost.

Description

technical field [0001] The invention relates to a high-concentration flame-retardant masterbatch suitable for polycarbonate and a preparation method thereof. Background technique [0002] Polycarbonate (PC) resin is an engineering plastic with excellent comprehensive performance. Its impact resistance ranks first among thermoplastics. It has good dimensional stability and high heat distortion temperature (130-140°C). All excellent. It has been widely used in industries such as automobiles, electronics, home appliances, and construction. At the same time, another rare advantage of PC is its high transparency, and its development in the computer and lighting industry is also very rapid. [0003] The oxygen index of PC resin is about 26%, and it can self-extinguish when it is away from the fire. Commercialized PC resins on the market are evaluated for flame retardancy according to the American UL94 standard, and basically meet the requirements of V-2 grade. In order to achi...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08K5/00C08K5/3492C08K5/523B29B9/06
Inventor 徐东徐永陈土华
Owner SHENZHEN KEJU NEW MATERIAL
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