Flame retardant PC/ABS composite with high rigidity and high stability

A technology with high stability and composition, applied in the field of flame retardant PC/ABS composition, can solve the problems of low tensile/flexural modulus, not imparting flame retardancy, and not having flame retardancy, etc. Dimensional stability, excellent flame retardancy, low equipment abrasion effects

Inactive Publication Date: 2010-07-28
SHANGHAI KUMHO SUNNY PLASTICS
View PDF14 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] PC/ABS molding compositions with fibrous mineral fillers are also known. US-A 5 965 655 describes PC/ABS molding compositions containing wollastonite, mainly characterized by improved surface properties and with so-called Class A surfaces. Wollastonites preferably used have an average aspect ratio of up to 6, i.e. the ratio of fiber length to fiber diameter, molding compositions with such wollastonite are often not sufficiently rigid, i.e. the tensile/flexural modulus is too low .The molding compositions described are not endowed with flame retardancy
[0011] Also, PC/ABS molding compositions of WO98/51737, characterized by improved thermal stability, flow, low temperature strength and dimensional stability, but not flame retardant, compositions described therein comprising 1-15 Parts by weight of mineral fillers, such as talc or wollastonite, with an average maximum particle size of 0.1-30 μm, in the case of fibrous fillers such as wollastonite with a large aspect rat

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

[0040] Component A: a linear polycarbonate based on bisphenol A, with a relative solution viscosity of 1.24, measured with methylene chloride as a solvent at 25° C. and a concentration of 0.5 g / 100 ml.

[0041] Component B: graft polymer, by 40 weight parts of styrene and acrylonitrile by the copolymer graft of the ratio of 73:27 in 60 weight parts by the thick shape cross-linked polybutadiene rubber (average) prepared by emulsion polymerization Particle diameter d 50 = 0.3 μm).

[0042]Component C: styrene / acrylonitrile copolymer, the weight ratio of styrene / acrylonitrile is 78 / 28, and the intrinsic viscosity is 0.55dl / g (measured in dimethylformamide at 20'°C).

[0043] Component D: Bisphenol A-based oligophosphate, BDP, produced in Changchun, Taiwan.

[0044] Component E: Tetrafluoroethylene polymer, as a coacervation mixture, prepared from an emulsion in water of an acrylonitrile-styrene copolymer (SAN graft polymer) according to component B above and an aqueous emulsion...

Embodiment 2

[0055] A high-rigidity and high-stability flame-retardant PC / ABS composition, the composition comprises the following components and formula:

[0056] 40 parts by weight of polycarbonate;

[0057] 50 parts by weight of graft polymer;

[0058] 30 parts by weight of talcum powder;

[0059] Wollastonite 20 parts by weight.

[0060] In the described talcum powder, MgO 30% by weight, SiO 2 70% by weight, the average maximum particle size of the talc powder d50<20 μm; the carbon element content in the wollastonite is 0.1% by weight, the average aspect ratio of the wollastonite is 7 μm, and the average fiber diameter is 1 μm.

[0061] The above raw materials are mixed at a high temperature of 200-260°C for 2-3 hours to obtain the product. The resulting products can be used as films, profiles, rails, internal components of vehicles, sea vessels, aircraft or other vehicles, electrical equipment housings with small transformers, equipment housings for information processing and dis...

Embodiment 3

[0063] A high-rigidity and high-stability flame-retardant PC / ABS composition, the composition comprises the following components and formula:

[0064] 98 parts by weight of polycarbonate;

[0065] 0.5 parts by weight of graft polymer;

[0066] 5 parts by weight of talcum powder;

[0067] Wollastonite 2 parts by weight;

[0068] Antioxidant 1010 2 parts by weight.

[0069] Described polycarbonate comprises bisphenol A type polycarbonate 88wt% A bis (diphenyl phosphate) BDP12wt%; Described graft polymer is vinyl monomer diene grafting at glass transition temperature< On the grafted polymer diene rubber at 10°C, the vinyl monomer diene accounts for 5% of the total weight of the grafted polymer.

[0070] In the described talcum powder, MgO 40% by weight, SiO 2 70% by weight and Al 2 o 3 0% by weight, the average maximum particle size d50 of the talc powder is less than 10 μm; the carbon element content in the wollastonite is 2% by weight, the average aspect ratio of the w...

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
Average particle diameteraaaaaaaaaa
Intrinsic viscosityaaaaaaaaaa
Average particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention relates to a flame retardant PC/ABS composite with high rigidity and high stability, which is characterized in that the composite comprises the following components in parts by weight according to the formula: 40-98 parts of polycarbonate, 0.5-50 parts of graft polymer, 5-30 parts of talc powder and 2-20 parts of wollastonite. Compared with the prior art, the invention has the advantages of improving the rigidity of materials, having size stability and strength under the heated condition, and the like.

Description

technical field [0001] The invention relates to a flame-retardant PC / ABS composition, in particular to a flame-retardant PC / ABS composition with high rigidity and high stability. Background technique [0002] Filled or reinforced PC / ABS molding compositions are known: for example, EP-A 0 391 413 describes PC / ABS molding compositions comprising inorganic fillers with special geometric properties, which are characterized by It has a relatively low coefficient of linear thermal expansion, high strength under impact loads and high dimensional stability under heated conditions. According to the invention, talc and unburned clay materials are used as fillers. Flame retardants are only generally described in the additive group. [0003] In EP-A 0 452 788 a PC / ABS molding composition comprising talc is described, which is characterized in that it is a material with a matt surface, likewise it is described generally for flame retardants of. [0004] JP-A 0 219 9162 describes reinf...

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
IPC IPC(8): C08L69/00C08L55/02C08L51/06C08K5/523C08K3/34C08K3/36
Inventor 杨春华丁宗勤罗明华李文强李荣群辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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