Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Antistatic polycarbonate/polyester alloy material and preparation method thereof

A polycarbonate and polyester alloy technology, applied in the field of antistatic polymers, can solve problems such as poor solvent resistance, high melt viscosity, stress cracking, etc. Effect

Active Publication Date: 2014-08-20
上海冠旗电子新材料股份有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a preparation method of antistatic polycarbonate / polyester alloy material to solve the problems of poor solvent resistance, high melt viscosity, easy occurrence of stress cracking and low price of polycarbonate in the prior art. Relatively high and other disadvantages

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

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] A kind of antistatic polycarbonate / polyester alloy material preparation method, comprises the following steps:

[0032] 1) Dry polycarbonate, polyester and conductive carbon black at 100-110°C for 12-24 hours;

[0033] 2) Mix 1~4% compatibilizer, 0.01~0.05% transesterification catalyst, 0.1~0.5% antioxidant, 0~5% heat stabilizer and 0.2~1% lubricant in a high mixer for 10~ 20 minutes;

[0034] 3) Put the mixture obtained in step 2, 50-70% polycarbonate and 10-30% polyester into the internal mixer until melting;

[0035] 4) Put 5~25% conductive carbon black into the internal mixer, kneading time is 5~8 minutes, and the temperature is 270~290°C;

[0036] 5) Send the melt obtained in step 4 into a twin-screw extruder, the speed of the extruder is 150~300 rpm, melt extrusion at a temperature of 260~280°C, and pelletize.

[0037] In order to facilitate the further understanding of the present invention, the present invention is described in detail in conjunction with spec...

Embodiment 1

[0039]According to the data given in Example 1 of Table 1, first, the Teijin L-1259Y polycarbonate and the Teijin TR 850 polyester were air-dried at 100°C for 12 hours; then the epoxy equivalent 699~700g / eq Bisphenol A solid epoxy resin, calcium stearate, triethyl phosphate, tris(2,4-di-tert-butylphenyl) phosphite and 2,2-methylene-bis(4-methyl -6-tert-butylphenol) According to the composition of mass ratio 2:1, anhydrous lanthanum acetate was mixed in the high mixer for 15 minutes, and the mixture in the high mixer was dropped into the internal mixer together with polycarbonate and polyester until melting; then put Cabot VULCANXC72 conductive carbon black into the internal mixer and knead for 8 minutes, the kneading temperature is 280°C; finally, the melt obtained by kneading in the internal mixer is sent to the twin-screw extruder for melt extrusion , granulation, the speed of the extruder is 150 rpm, the temperature of the first zone of the extruder is 260~265°C, the temper...

Embodiment 2

[0041] According to the data given in Example 1 of Table 1, first, the Teijin L-1259Y polycarbonate and the Teijin TR 850 polyester were air-dried at 100°C for 12 hours; then the epoxy equivalent was 600~700g / eq Bisphenol A solid epoxy resin, calcium stearate, triphenyl phosphite, tris (2,4-di-tert-butylphenyl) phosphite composition according to the mass ratio of 2:1, lanthanum acetylacetonate Mix in the high mixer for 15 minutes, put the mixture in the high mixer into the internal mixer together with polycarbonate and polyester until it melts; then put Cabot VULCANXC72 conductive carbon black into the internal mixer and knead for 5 minutes , the kneading temperature is 270°C; finally, the melt kneaded by the internal mixer is sent to the twin-screw extruder for melt extrusion and granulation. 250~255℃, the temperature of the second zone is 255~260℃, the temperature of the third zone is 255~260℃, the temperature of the fourth zone is 260~265℃, and the temperature of the machin...

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
adsorption capacityaaaaaaaaaa
epoxy equivalentaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of antistatic polymers, in particular to a preparation method of a polycarbonate / polyester alloy material. The antistatic polycarbonate / polyester alloy material comprises the following components in percentage by weight: 5 to 25 percent of conductive carbon black, 50 to 70 percent of polycarbonate, 10 to 30 percent of polyester, 0. 01 to 0.05 percent of ester exchange catalyst, 1 to 4 percent of compatilizer, 0.1 to 0.5 percent of antioxidant and 0.2 to 1 percent of lubricant; and the preparation method comprises the following steps of: mixing the compatilizer, the ester exchange catalyst, the antioxidant, the heat stabilizer and the lubricant in a high-speed mixing machine; putting the mixture with the polycarbonate and the polyester into an internal mixer until the mixture is molten; and putting the conductive carbon black into the internal mixer, feeding the melt into a twin screw extruder for melt extrusion and prilling. By the method, the prepared alloy material has good performance, good solvent performance and low melt viscosity, stress crack is avoided, and the raw material cost is reduced.

Description

technical field [0001] The invention relates to the field of antistatic polymers, in particular to a method for preparing polycarbonate / polyester alloy materials. Background technique [0002] Polycarbonate is a widely used thermoplastic engineering plastic, which has the advantages of high rigidity, high elastic modulus, good thermal stability, and dimensional stability, making it widely used in machinery, tool casings, bodies, computers and televisions. The electrical industry has been widely used. Polycarbonate is an electrical insulator, and it is easy to generate static electricity and cause damage to electronic appliances. In order to prevent losses caused by static electricity, it can be combined with conductive materials. Some existing materials have disclosed that some carbon fibers, conductive carbon black, carbon nanotubes, etc. are used as conductive materials to be added to polycarbonate materials to prepare antistatic polycarbonate materials. In view of the s...

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 Patents(China)
IPC IPC(8): C08L69/00C08L67/02C08L63/02C08K13/02C08K3/04
Inventor 林峰
Owner 上海冠旗电子新材料股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com