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PC/PTT/ carbon nanotube composite material with fire resistance

A technology of carbon nanotubes and composite materials, applied in the field of flame-retardant PC/PTT/carbon nanotube composite materials, which can solve the problems of poor flame retardancy, low impact strength, and not being well suitable for high flame-retardant applications , to achieve good mechanical properties, excellent thermal conductivity and antistatic properties and flame retardant properties, good practical value and the effect of popularization and application prospects

Inactive Publication Date: 2015-08-19
QINGDAO JIAYIYANG IND & TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since PC is an amorphous polymer and PTT is a semi-crystalline polymer, PC / PTT is a typical blend system of amorphous and crystalline polymers, and the interface between the two is poorly bonded, which will lead to the impact strength of PC / PTT Low, poor mechanical properties, and poor flame retardancy, not very suitable for high flame-retardant applications

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A flame-retardant PC / PTT / carbon nanotube composite material, the components of which are proportioned by mass percentage: PC 40%, PTT 30%, modified carbon nanotube 10%, AS-g-GMA 2%, cyanide Uric acid melamine 6%, antimony trioxide 2%, ACR 8%, 2-hydroxy-4-methoxybenzophenone 1.5%, antioxidant 0.1%, pentaerythritol stearate 0.4%, the PC is A bisphenol A-type aromatic polycarbonate with a weight average molecular weight of 20,000 to 40,000 g / mol, the PTT is polytrimethylene terephthalate with an intrinsic viscosity of 0.7 to 1.1 dL / g, and the modified carbon nanotubes are surface Carbon nanotubes with a particle size of 0.5 to 200 nm and a length of 5 to 20 μm have undergone pre-oxidation and silane coupling agent activation and modification treatment. The antioxidant is a hindered phenolic antioxidant 1010 with a mass ratio of 1:1. Complex with Phosphite Antioxidant 168.

[0024] Preparation method: (1), dry PC and PTT in a forced air circulation oven at a temperature of...

Embodiment 2

[0026] A flame-retardant PC / PTT / carbon nanotube composite material, the components of which are proportioned by mass percentage as follows: PC 51%, PTT 20%, modified carbon nanotube 5%, AS-g-GMA 2%, dual Phenol A-bis(diphenyl phosphate) 12%, antimony trioxide 4%, MBS 5%, 2-hydroxy-4-n-octyloxybenzophenone 0.5%, antioxidant 0.1%, hard pentaerythritol Fatty acid ester 0.4%, the PC is a bisphenol A type aromatic polycarbonate with a weight average molecular weight of 20000-40000g / mol, and the PTT is a polytrimethylene terephthalate with an intrinsic viscosity of 0.7-1.1dL / g , the modified carbon nanotubes are carbon nanotubes whose surface has undergone pre-oxidation and silane coupling agent activation modification treatment, and the particle size is 0.5-200 nm and the length is 5-20 μm, and the antioxidant is a mass ratio of 1 : 1 compound of hindered phenolic antioxidant 1010 and phosphite antioxidant 168.

[0027] Preparation method: (1), dry PC and PTT in a forced air circu...

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PUM

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Abstract

The invention discloses a PC / PTT / carbon nanotube composite material with fire resistance. The PC / PTT / carbon nanotube composite material comprises the following components in percentage by weight: 40%-60% of PC, 20%-30% of PTT, 5%-10% of modified carbon nanotubes, 2%-5% of AS-g-GMA, 6%-12% of a fire retardant, 2%-4% of fire-retardant synergistic agent, 5%-8% of a flexibilizer, 0.5%-2% of a light stabilizing agent, 0.1%-0.5% of an antioxidant, and 0.1%-1% of a lubricant, wherein the fire retardant is one of decabromodiphenyl ethane, melamine cyanurate, bisphenol A-bis(diphenyl phosphate) and polysulfonyldiphenylene phenyl phosphonate. The PC / PTT / carbon nanotube composite material disclosed by the invention has the benefits that the PC / PTT / carbon nanotube composite material uses PC / PTT as a basal body, besides, the PC / PTT / carbon nanotube composite material uses the carbon nanotubes as functional fillings, and a proper number of fire retardants are added for modifying the composite material, so that the PC / PTT / carbon nanotube composite material has an excellent heat conducting antistatic property and a flame retardant property and maintains a better mechanical property.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a flame-retardant PC / PTT / carbon nanotube composite material. Background technique [0002] Polycarbonate (PC) has high molecular rigidity and steric hindrance, high melting temperature and difficult processing. It is difficult to make large thin-walled products, and the residual stress of the product is large, which is prone to stress cracking, and PC is sensitive to gaps. The hydrolytic stability and solvent resistance are poor, and these defects limit the practical application of PC. Polytrimethylene terephthalate (PTT) is a new type of polyester material with fast crystallization speed, which is easy to achieve high-speed molding and has excellent solvent resistance, but its products have large molding shrinkage, low notched impact strength, Disadvantages such as insufficient rigidity at high temperature. Blending PC and PTT can overcome the shortcomings of PC's po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L67/02C08L51/06C08K13/06C08K9/06C08K9/02C08K7/24C08J3/22B29B9/06B29C47/92B29C48/92
CPCC08L69/00B29B9/06C08K2201/003C08K2201/004C08L2201/02C08L2201/04C08L2205/035C08L67/02C08L51/00C08L33/10C08K13/06C08K9/06C08K9/02C08K7/24C08K5/34924C08K3/2279C08K5/132C08K5/103C08L51/04C08K5/523
Inventor 不公告发明人
Owner QINGDAO JIAYIYANG IND & TRADE