Thin-wall high-CTI-value flame-retardant polycarbonate blend and preparation method thereof

A technology of flame-retardant polycarbonate and polycarbonate, which is applied in the field of alloy materials, can solve the problems affecting the impact strength and heat resistance of PC resin, high CTI value, and low CTI value, and achieve improved tracking resistance, Improves heat resistance and toughness, improves the effect of flame retardancy

Active Publication Date: 2019-02-22
JINYOUNG XIAMEN ADVANCED MATERIALS TECH CO LTD
View PDF4 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the original PC resin is far from reaching this safety standard, so it needs to be modified
In the prior art, in order to meet the high requirements of material flame retardancy and CTI value, aromatic phosphate flame retardants or sulfonate flame retardants are usually added, but the addition of aromatic phosphate flame retardants usually affects PC resin produces plasticization, which affects the impact strength and heat resistance of PC resin; and the addition of sulfonate flame retardants maintains the heat resistance of PC resin, but the thin-walled flame retardancy of PC resin will be limited. And the CTI value is not high
In the field of electronic and electrical housing applications, plastics are required to have a high CTI value in many occasions, and due to the exothermic use environment, the material also requires a specific high heat distortion temperature, but there are few products on the market that can meet these two requirements at the same time

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

Embodiment 1

[0029] The invention discloses a thin-walled flame-retardant polycarbonate blend with high CTI value and a preparation method thereof. In terms of weight percentage, the polycarbonate composition comprises:

[0030] Polycarbonate 80-95%, silicone halogen-free flame retardant 0.05%-0.2%, phosphazene flame retardant 1-10%, anti-dripping agent 0.1-1%, other additives 3%-10%, each The sum of the percentages of the components is 100%,

[0031] Wherein the polycarbonate blend meets the CTIPLC 2 standard and has V0 performance at a thickness of 0.8 mm.

[0032] The polycarbonate is at least one of aromatic polycarbonate, aliphatic polycarbonate, aromatic-aliphatic polycarbonate, and branched polycarbonate.

[0033] The organosilicon halogen-free flame retardant is one or more mixtures of random silsesquioxane, ladder silsesquioxane, bridge silsesquioxane and cage silsesquioxane. The terminal group of the silicone halogen-free flame retardant is composed of one or two or more of ami...

Embodiment 2

[0042] Based on Example 1, this embodiment discloses a thin-walled high CTI value flame-retardant polycarbonate blend and a preparation method thereof. In terms of weight percentage, the polycarbonate composition includes:

[0043] Polycarbonate 80%, silicone halogen-free flame retardant 0.05%, phosphazene flame retardant 10%, anti-dripping agent 1%, other additives 8.95%, the sum of the percentages of each component is 100%.

[0044] Among them, the polycarbonate is aliphatic polycarbonate, the silicone halogen-free flame retardant is random silsesquioxane, and the phosphazene flame retardant:

[0045] ,

[0046] The repeating unit n is an integer of 3-25, the R1 group is the same as the R2 group, both represent unsubstituted phenyl groups, the anti-dripping agent is a polymer containing fluorine-containing vinyl structure, and other additives include: self-toughening agent 2 %, heat stabilizer 3.55% and antioxidant 3.4%.

Embodiment 3

[0048] Based on Example 1, this embodiment discloses a thin-walled high CTI value flame-retardant polycarbonate blend and a preparation method thereof. In terms of weight percentage, the polycarbonate composition includes:

[0049] Polycarbonate 85%, silicone halogen-free flame retardant 0.1%, phosphazene flame retardant 8%, anti-dripping agent 0.5%, other additives 6.4%, the sum of the percentages of each component is 100%.

[0050] Among them, polycarbonate is aromatic polycarbonate, silicone halogen-free flame retardant is trapezoidal silsesquioxane, and phosphazene flame retardant is:

[0051] ,

[0052] The repeating unit n is an integer of 3-25, the R1 group is the same as the R2 group, both represent a phenyl group substituted by an alkyl group containing at least one 1-6 carbon atoms, and the anti-dripping agent is a polymer containing fluorine-containing vinyl structure , Other additives include: light stabilizer 3.2%, plasticizer 3.2%.

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

No PUM Login to view more

Abstract

The invention relates to the technical field of alloy materials and discloses a thin-wall high-CTI-value flame-retardant polycarbonate blend and a preparation method thereof. Compared with the prior art, a phosphonitrile flame retardant is added into the raw material formula of the preparation method, so that on one hand, the drawbacks that the thermal distortion temperature and flexibility of polycarbonate are substantially decreased due to the addition of an organic phosphate flame retardant in the prior art can be effectively overcome, and the heat resistance and tenacity of a polycarbonatecomposition is effectively improved; and on the other hand, the phosphonitrile flame retardant with effective nitrogen and phosphorus amounts has very good flame-retardant effect, the flame-retardantlevel of the polycarbonate composition can be effectively increased, and meanwhile, the electric leakage marking resistance of the polycarbonate composition can be greatly improved by virtue of the phosphonitrile flame retardant.

Description

technical field [0001] The invention relates to the technical field of alloy materials, in particular to a thin-walled high-CTI value flame-retardant polycarbonate blend and a preparation method thereof. Background technique [0002] Polycarbonate PC has the advantages of high impact resistance, heat resistance, good dimensional stability, and electrical insulation properties, so it is widely used in auto parts, home appliances, electronic appliances and other fields. The process of gradually forming a conductive path on the surface of a material under the combined action of an electric field and an electrolyte is called tracking. The CTI value is a measure of the tracking sensitivity of a material, which indicates that the surface of a material can withstand a certain voltage. The highest voltage value for 50 drops of electrolyte without forming leakage traces. The CTI value of a material depends on the formation and accumulation of free carbon on the surface of the materi...

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): C08L69/00C08L83/04C08L85/02
CPCC08L69/00C08L2201/02C08L2201/08C08L2205/035C08L83/04C08L85/02
Inventor 曾建广林明佳薛成亮王莹春王伟张淼申应军郭永新
Owner JINYOUNG XIAMEN ADVANCED MATERIALS TECH CO LTD
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