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Transparent halogen-free flame-retardant polycarbonate resin and preparation method thereof

A technology of flame-retardant polycarbonate and polycarbonate, which is applied in the fields of flame-retardant polycarbonate resin, transparent halogen-free flame-retardant polycarbonate resin and its preparation, and can solve the problem of inability to guarantee product transparency, affecting product transparency, etc. problems, easy processing and storage, excellent flame retardant effect, and simple preparation process

Active Publication Date: 2015-03-11
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this patent, the anti-dripping agent PTFE powder is added to the raw materials, which will directly affect the final transparency of the product, and cannot guarantee the transparency of the product under long-term use conditions.

Method used

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  • Transparent halogen-free flame-retardant polycarbonate resin and preparation method thereof
  • Transparent halogen-free flame-retardant polycarbonate resin and preparation method thereof
  • Transparent halogen-free flame-retardant polycarbonate resin and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1～6

[0035] A method for preparing a transparent halogen-free flame-retardant polycarbonate resin, the method comprising the following steps:

[0036] (1) According to the weight percentage of the masterbatch formula ingredients in Table 1, add the raw materials into the high-speed mixer and mix them thoroughly, then place them in the screw machine, control the speed of the screw machine to 300-500rpm, and the temperature to 270-290°C , extruded and granulated to prepare a flame retardant masterbatch;

[0037] (2) Add the flame retardant masterbatch and other ingredients prepared in step (1) into the high-speed mixer according to the weight percentage of each ingredient in Table 2, and then fully mix them, then place them in the screw machine, and control the speed of the screw machine 300-500rpm, temperature 270-290°C, extruding and granulating to obtain the product.

[0038] Wherein, the material composition of table 1 and table 2 is as follows:

[0039] Component A1 is PC, the...

Embodiment 7

[0069] In this embodiment, the transparent halogen-free flame-retardant polycarbonate resin includes the following ingredients in weight percent: 98.4% of flame-retardant masterbatch, 0.6% of flame retardant, 0.5% of antioxidant and 0.5% of lubricant.

[0070] Wherein, the flame retardant masterbatch includes the following components by weight percentage: 89.7% of PC, 10% of flame retardant, 0.1% of antioxidant and 0.2% of lubricant.

[0071] PC is bisphenol A polycarbonate, and the weight average molecular weight of the bisphenol A polycarbonate is 10000.

[0072] The flame retardant is potassium perphenylbutylsulfonate, the softening point of potassium perphenylbutylsulfonate is 96-100°C, the pH value is 6.6-6.8, and the thermal decomposition temperature is >410°C. The specific structural formula is as follows:

[0073]

[0074] The antioxidant is tetrakis[β-(3,5-di-tert-butyl 4-hydroxyphenyl) propionate] pentaerythritol, and the lubricant is silane polymer.

[0075] The...

Embodiment 8

[0083] In this embodiment, the transparent halogen-free flame-retardant polycarbonate resin includes the following ingredients in weight percentage: 99.75% of flame-retardant masterbatch, 0.05% of flame retardant, 0.1% of antioxidant and 0.1% of lubricant.

[0084] Wherein, the flame retardant masterbatch includes the following components by weight percentage: 97.7% of PC, 1% of flame retardant, 1% of antioxidant and 0.3% of lubricant.

[0085] PC is bisphenol A polycarbonate, and the weight average molecular weight of the bisphenol A polycarbonate is 40,000.

[0086] The flame retardant is potassium perphenylbutylsulfonate, the softening point of potassium perphenylbutylsulfonate is 96-100°C, the pH value is 6.6-6.8, and the thermal decomposition temperature is >410°C. The specific structural formula is as follows:

[0087]

[0088] The antioxidant is pentaerythritol bisphosphite bis (2,4-di-t-butylphenyl) ester, and the lubricant is methylene bis stearic acid amide and N,...

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Abstract

The invention relates to a transparent halogen-free flame-retardant polycarbonate resin. The resin comprises the following components in percentage by weight: 98.4-99.75% of flame-retardant master batches, 0.05-0.6% of a fire retardant, 0.1-0.5% of an antioxidant and 0.1-0.5% of a lubricant. The preparation method comprises the following steps: preparing materials according to the components, adding PC, the fire retardant, the antioxidant and the lubricant in percentage by weight into a high-speed mixing machine, sufficiently mixing the PC, the fire retardant, the antioxidant and the lubricant, and placing the PC, the fire retardant, the antioxidant and the lubricant, which are mixed, into a screw rod machine for extruding and pelleting so as to obtain flame-retardant master batches; adding the flame-retardant master batches and the rest of the components into the high-speed mixing machine together, sufficiently mixing the flame-retardant master batches and the rest of the components, and then placing the flame-retardant master batches and the rest of the components, which are sufficiently mixed, into the screw rod machine for extruding and pelleting so as to obtain products. Compared with the prior art, the method disclosed by the invention fully uses phenyl butyl sulfonic acid potassium as the fire retardant, after the fire retardant, the antioxidant, the lubricant and the flame-retardant master batches are mixed, extruded and pelleted, the whole preparation technology is simple, a complex ladder temperature control step is not needed, the obtained products have the characteristics of transparence, thin walls, high impact strength, excellent flame retardant property, zero toxicity and zero harm, and the application range is wide.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a flame-retardant polycarbonate resin, in particular to a transparent halogen-free flame-retardant polycarbonate resin and a preparation method thereof. Background technique [0002] Polycarbonate (Polycarbonate, hereinafter referred to as PC) has excellent impact resistance, heat resistance, good dimensional stability, electrical insulation properties, and has the characteristics of non-toxicity and low water absorption, and can be used in a wide temperature range Used in the same room, and the light transmittance can reach 90%, known as the title of "transparent metal", widely used in electronics, electrical, machinery, automobiles, aerospace, construction, office and household products and other fields. PC itself has a certain flame retardancy (oxygen index is 25%), but in order to meet the high requirements of flame retardancy in some application fields, it must be mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08K5/42C08K5/134C08K5/526B29C47/92B29C48/92
CPCC08J3/226C08J2469/00C08K2201/014C08L69/00C08L2201/02C08L2201/10C08L2201/22C08L2205/025C08L2205/035C08K5/00C08K5/42C08K5/20C08K5/1345C08K5/526
Inventor 李文强李强罗明华辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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