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Halogen-free flame-retardant polycarbonate material and preparation method thereof

A technology of flame-retardant polycarbonate and polycarbonate, which is applied in the field of halogen-free flame-retardant polycarbonate materials and preparations, can solve the problems of flame-retardant PC material pollution and insufficient flame-retardant performance, and achieve low impact strength and flame-retardant properties. High combustion efficiency, flame retardant efficiency and environmental protection effect

Active Publication Date: 2012-09-12
CHINA BLUESTAR CHENGRAND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a halogen-free flame-retardant PC material that is easy to prepare, has good mechanical properties and high flame retardancy, and is aimed at the defects of existing flame-retardant PC materials such as pollution to the environment and / or insufficient flame-retardant performance. its preparation method

Method used

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  • Halogen-free flame-retardant polycarbonate material and preparation method thereof
  • Halogen-free flame-retardant polycarbonate material and preparation method thereof
  • Halogen-free flame-retardant polycarbonate material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A halogen-free flame-retardant polycarbonate material is characterized in that it is made of the following raw materials in weight ratio:

[0042] Polycarbonate 90%

[0043] Red phosphorus flame retardant masterbatch RPM250 8.5%

[0044] Among them, microcapsule red phosphorus powder 4.25%, PC 4.25%

[0045] Polytetrafluoroethylene (PTFE) 0.3%

[0046] Ethylene bis stearamide (EBS) 0.8%

[0047] Stabilizer 0.4%

[0048] The stabilizer is compounded by antioxidant 1010 and trinonylphenyl phosphite in a weight ratio of 1:2.

[0049] Put polycarbonate and red phosphorus flame retardant masterbatch RPM250 in an oven at 100°C and dry for 20 hours, and then mix the weighed raw materials in a mixer whose rotation speed is controlled at 800rpm~1000rpm according to the above weight percentage for 2~ 5 minutes; then extrude and granulate the mixed material through a twin-screw extruder at 225-255°C and 200 rpm to obtain a halogen-free flame-retardant PC material.

Embodiment 2

[0051] A halogen-free flame-retardant polycarbonate material is characterized in that it is made of the following raw materials in weight ratio:

[0052] Polycarbonate 85%

[0053] Red phosphorus flame retardant masterbatch RPM240 8.7%

[0054] Among them, microcapsule red phosphorus powder 3.48%, PC 5.22%

[0055] Styrene-Butadiene-Methacrylate Terpolymer 5%

[0056] Polytetrafluoroethylene (PTFE) 0.1%

[0057]Pentaerythritol Stearate (PETS) 0.8%

[0058] Stabilizer by 0.4%

[0059] The stabilizer is compounded by antioxidant CA and antioxidant 168 in a weight ratio of 2:1.

[0060] Put polycarbonate and red phosphorus flame retardant masterbatch RPM240 in an oven at 120°C to dry for 12 hours, and then mix the weighed raw materials in a mixer whose rotation speed is controlled at 2000rpm~3000rpm according to the above weight percentage for 2~ 5 minutes; then the mixed material is extruded and granulated by a twin-screw extruder at 225-255° C. at a rotation speed of 150 ...

Embodiment 3

[0062] A halogen-free flame-retardant polycarbonate material is characterized in that it is made of the following raw materials in weight ratio:

[0063] Polycarbonate 83%

[0064] Red phosphorus flame retardant masterbatch RPM240 10.5%

[0065] Among them, microencapsulated red phosphorus powder 4.2%, PC 6.3%

[0066] Grafted EPDM 5%

[0067] Polytetrafluoroethylene (PTFE) 0.4%

[0068] Ethylene bis stearamide (EBS) 0.7%

[0069] Stabilizer 0.4%

[0070] The stabilizer is compounded by antioxidant 1010 and antioxidant 168 in a weight ratio of 1:1.

[0071] Put the polycarbonate and red phosphorus flame retardant masterbatch RPM240 in an oven at 150°C for 14 hours to dry, and then mix the weighed raw materials in a mixer whose rotation speed is controlled at 1200rpm~1800rpm according to the above weight percentage for 2~ 5 minutes; then extrude and granulate the mixed material through a twin-screw extruder at 225-255°C and 200 rpm to obtain a halogen-free flame-retardant...

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Abstract

The invention discloses a halogen-free flame-retardant polycarbonate (PC) material and a preparation method thereof. The polycarbonate, a microencapsulated red phosphorus flame retardant, a carrier resin, a flexibilizer, a synergetic flame retardant, a lubricating agent and a stabilizing agent are mixed, and extruded by a double-screw extruder so as to prepare the product, wherein the microencapsulated red phosphorus flame retardant can be replaced by master batch consisting of microencapsulated red phosphorus powder and PC or the carrier resin; and the master batch can be a red phosphorus flame retardant master batch RPM240 or RPM250 product which is produced in Free Blue Star (Chengdu) New Material Co., Ltd. and takes the PC as a carrier. The halogen-free flame-retardant PC material hasthe advantages of high flame retardance, higher heat resistance, and flame retardance of UL94V-0 (0.38mm), and can be applied to the production of electronic and electrical internal insulation films.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a halogen-free flame-retardant polycarbonate (PC) material and a preparation method. This halogen-free flame-retardant PC material can be applied to insulating film products inside electronic and electrical equipment. Background technique [0002] Polycarbonate, referred to as PC, contains The general term for radical polymers was industrialized in 1959 and developed rapidly thereafter. It is a kind of thermoplastic engineering plastic with excellent comprehensive performance. It has high impact strength and good transparency in thermoplastics. It can maintain high mechanical strength, good electrical properties, and high temperature in a wide temperature range. Dimensional stability and convenient processing are widely used in mechanical equipment, construction engineering, transportation, instrumentation and electrical lighting, and have become the second largest e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L67/02C08L25/12C08K13/06C08K9/10C08K3/02C08K5/20C08K5/103C08K5/13C08K5/524B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/92
Inventor 张志平李谦眭宇清曹艳肖
Owner CHINA BLUESTAR CHENGRAND CO LTD