High-strength PC/PET alloy and preparation method thereof

A high-strength, alloy technology, applied in the field of high-strength PC/PET alloy and its preparation, can solve the problems of reducing strength, poor compatibility between PC and PET, affecting mechanical properties, etc. Good processing performance

Inactive Publication Date: 2015-06-17
QINGDAO TONGCHUANG ENERGY SAVING ENVIRONMENTAL PROTECTION ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since PET is a crystalline polymer and PC is an amorphous polymer, the PC / PET alloy is a typical amorphous / crystalline blend system. The main problem existing in the PC / PET alloy on the market is the compatibility of PC and PET blends. Poor, and affect its mechanical properties and reduce strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A high-strength PC / PET alloy, the composition of which is: PC 55%, PET 25%, glycidyl methacrylate grafted polystyrene (PS-g-GMA) 5%, glass fiber 10% by mass percentage %, nano-carbon fiber 3%, polyethylene glycol (PEG) 1%, composite antioxidant 0.2%, modified ethylene bis fatty acid amide (TAF) 0.8%. Wherein, the PC is bisphenol A type aromatic polycarbonate, the weight average molecular weight is 20000-40000g / mol; the PET is polyethylene terephthalate, and its characteristic viscosity is 0.6-0.9dL / g; the glass fiber is an alkali-free chopped glass fiber with a diameter of 8-12 μm, a length of 3-6 mm, and an aspect ratio of 7-9, and its surface has been treated with a silane coupling agent; The carbon nanofibers described above are vapor-grown carbon nanofibers with a diameter of 50 to 200 nm, and the surface thereof has been modified by plasma, and the plasma is oxygen (O 2 ) plasma, the treatment method is: put the carbon nanofiber into the oxygen (O 2 ) in the pla...

Embodiment 2

[0024] A high-strength PC / PET alloy, the composition of which is: PC 55%, PET 20%, glycidyl methacrylate grafted polystyrene (PS-g-GMA) 2%, glass fiber 15% by mass percentage %, carbon nanofiber 5%, polyethylene glycol (PEG) 2%, composite antioxidant 0.2%, pentaerythritol stearate (PETS) 0.8%. Wherein, the PC is bisphenol A type aromatic polycarbonate, the weight average molecular weight is 20000-40000g / mol; the PET is polyethylene terephthalate, and its characteristic viscosity is 0.6-0.9dL / g; the glass fiber is an alkali-free chopped glass fiber with a diameter of 8-12 μm, a length of 3-6 mm, and an aspect ratio of 7-9, and its surface has been treated with a silane coupling agent; The carbon nanofibers described above are vapor-grown carbon nanofibers with a diameter of 50 to 200 nm, and the surface thereof has been modified by plasma, and the plasma is oxygen (O 2 ) plasma, the treatment method is: put the carbon nanofiber into the oxygen (O 2 ) in the plasma box, treat...

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Abstract

The invention discloses a high-strength PC / PET alloy and a preparation method thereof. The alloy is composed of the following components in percentage by weight: 30 to 60% of PC, 5 to 30% of PET, 2 to 6% of compatilizer, 5 to 15% of glass fiber, 3 to 8% of nano carbon fiber, 1 to 3% of plasticizer, 0.1 to 0.5% of composite antioxidant, and 0.1 to 1% of lubricant. Compared with the prior art, the PC / PET alloy is modified by glass fiber and nano carbon fiber through blending, and has the advantages of enhanced strength and rigidness, excellent electro-conductive property, heat resistance, corrosion resistance, good processability, and low cost. The preparation method is simple, is easy to operate, and can be easily applied to industrial production.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high-strength PC / PET alloy and a preparation method thereof. Background technique [0002] PC / PET alloy (polycarbonate / polyethylene terephthalate) is an engineering plastic with relatively ideal comprehensive properties. It has both the rigidity and heat resistance of PC, and the solvent resistance of PET, and PET The addition of PC can also improve the processing fluidity of PC, which can be widely used in automobiles, home appliances, communications and other fields. However, since PET is a crystalline polymer and PC is an amorphous polymer, the PC / PET alloy is a typical amorphous / crystalline blend system. The main problem existing in the PC / PET alloy on the market is the compatibility of PC and PET blends. Poor, and affect its mechanical properties and reduce strength. Contents of the invention [0003] The object of the present invention is to provide a high-s...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L67/02C08L51/06C08K13/06C08K9/06C08K9/02C08K7/14C08K7/06C08J5/06C08J5/08
CPCC08L69/00C08J5/06C08J5/08C08J2369/00C08K2201/003C08K2201/004C08K2201/011C08K2201/016C08L2201/08C08L2205/035
Inventor 不公告发明人
Owner QINGDAO TONGCHUANG ENERGY SAVING ENVIRONMENTAL PROTECTION ENG
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