PC (Polycarbonate) film material and preparation method thereof

A thin film material, 80% PC technology, applied in the field of PC thin film material and its preparation, can solve the problems of poor solvent resistance, poor stress crack resistance, low flame retardant grade, etc., and achieve good film forming performance

Inactive Publication Date: 2012-08-01
SHENZHEN KEJU NEW MATERIAL
View PDF2 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main characteristics of PC film materials include the main advantages of PC raw materials, and the disadvantages are mainly poor stress crack resistance, poor solvent resistance, poor wear resistance, low flame retardant grade, and the glow wire test cannot reach above 900 °C

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • PC (Polycarbonate) film material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Pour the dried 77% PC raw material, 15% flame retardant, 5% flame retardant synergist, 0.5% anti-dripping agent, 0.5% high-temperature antioxidant, and 1% lubricant into a high-speed mixer, and drop 1 % white mineral oil, stir at a low speed (800rpm) for 1-3 minutes, then stir at a high speed (2000rpm) for 3-5 minutes, and set aside. Put the stirred mixture in a twin-screw machine to melt, extrude and granulate. The process conditions are as follows: twin-screw first-stage temperature 200-210°C, second-stage temperature 210-220°C, third-stage temperature 220-240°C, die head temperature 240°C.

Embodiment 2

[0023] Pour the dried 80% PC, 18% flame retardant, 2% flame retardant synergist, 1% anti-dripping agent, 1% high-temperature antioxidant, and 0.5% lubricant into a high-speed mixer, and drop 1.5 % white mineral oil, stir at a low speed (800rpm) for 1-3 minutes, and then stir at a high speed (2000rpm) for 3-5 minutes; each component is a percentage by weight and is ready for use. Put the stirred mixture in a twin-screw machine to melt, extrude and granulate. The process conditions are as follows: twin-screw first-stage temperature 200-210°C, second-stage temperature 210-220°C, third-stage temperature 220-240°C, die head temperature 240°C.

Embodiment 3

[0025] Pour the dried 82% PC, 12% flame retardant, 1% flame retardant synergist, 1.5% anti-dripping agent, 0.5% high-temperature antioxidant, and 1% lubricant into a high-speed mixer, and drop 2 % white mineral oil, stir at a low speed (800rpm) for 1-3 minutes, and then stir at a high speed (2000rpm) for 3-5 minutes; each component is a percentage by weight and is ready for use. Put the stirred mixture in a twin-screw machine to melt, extrude and granulate. The process conditions are as follows: twin-screw first-stage temperature 200-210°C, second-stage temperature 210-220°C, third-stage temperature 220-240°C, die head temperature 240°C.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
melt flow indexaaaaaaaaaa
refractive indexaaaaaaaaaa
transmittivityaaaaaaaaaa
Login to view more

Abstract

The invention discloses a PC (Polycarbonate) film material and a preparation method thereof. The PC film material comprises the following components by weight percentage: 70-85% of PC, 5-10% of flame retardant, 1-5% of flame retardant synergist, 0.1-1% of anti-dripping agent, 0.1-1% of high temperature antioxidant, 0.1-1% of lubricant, and 1-2% of white mineral oil. The PC film material provided by the invention has the advantages of good film-forming properties, environment friendliness and flame retardance, low smoke and low toxicity, high glow-wire ignition temperature (GWIT is more than or equal to 900 DEG C), high glow-wire flammability temperature (GWFI is more than or equal to 960 DEG C), and high oxygen index ( LOI is more than or equal to 44), and is suitable for the fields of electrical and electronic appliances of keyboard insulation, TV/monitor insulation, computer motherboard insulation and the like.

Description

[technical field] [0001] The invention relates to polymer materials, in particular to a PC thin film material and a preparation method thereof. [Background technique] [0002] Polycarbonate (Polycarbonate, referred to as PC) is a polycarbonate composite material of an amorphous thermoplastic engineering plastic with excellent performance. It has outstanding impact resistance, good creep resistance and dimensional stability, heat resistance, low water absorption, It is non-toxic and has excellent dielectric properties. It is the only product with good transparency among the five major engineering plastics, and it is also the fastest growing general engineering plastic in recent years. At present, it is widely used in automobiles, electronics, construction, office equipment, packaging, sports equipment, medical care and other fields. With the continuous deepening of modification research, it is rapidly expanding to high-tech fields such as aerospace, computers, and optical dis...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08K5/00C08K5/526C08K5/20B29C47/92B29C48/92
CPCC08K5/526C08L69/00C08K5/00C08K5/20B29C48/04B29C48/08B29C48/40B29C48/875B29C48/92B29C2948/92704B29C2948/92895
Inventor 徐东徐永何杰
Owner SHENZHEN KEJU NEW MATERIAL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap