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Toughened PC/PBT/AES alloy material and preparing method thereof

An alloy material, polycarbonate technology, applied in the field of toughened PC/PBT/AES alloy material and its preparation, to achieve the effect of improving interface compatibility, good processing fluidity, and improving processing fluidity

Active Publication Date: 2014-08-27
句容市育达实业投资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there have been some studies on the toughening of PC / PBT blend alloys, but its comprehensive performance needs to be further improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A toughened PC / PBT / AES alloy material comprising the following components in parts by weight: 50 parts of PC, 50 parts of PBT, and 20 parts of AES.

[0024] Heat PC and PBT in a vacuum drying oven at 120°C for 8 hours; AES in a vacuum drying oven at 100°C for 8 hours; add the dried PC, PBT, and AES to a high-speed mixer for mixing, among which, PC: PBT: AES The weight ratio is: 50:50:20; extruded by a twin-screw extruder at 240°C, extruded, stretched, cooled, pelletized, and the screw speed is 100rpm / min to obtain PC / PBT / AES alloy. AES has a certain toughening effect on PC / PBT blended gold. Compared with PC / PBT blended gold without AES, when the mass fraction of AES in the blend is 20%, the notched impact strength is from 70J / m is increased to 120J / m. AES contains highly polar acrylonitrile (AN) groups, which may have a certain mutual attraction with the ester groups contained in PC and PBT, thus having a certain compatibilization effect.

[0025]

Embodiment 2

[0030] A toughened PC / PBT / AES alloy material comprising the following components in parts by weight: 50 parts of PC, 50 parts of PBT, 20 parts of AES, and 4 parts of E-MA-GMA. The MA content in E-MA-GMA is 10wt%, and the GMA content is 2wt%.

[0031] Heat PC and PBT in a vacuum drying oven at 120°C for 10 hours; AES in a vacuum drying oven at 100°C for 12 hours; the obtained dried PC, PBT and AES and E-MA-GMA are added to the high-speed mixer for mixing The mixture is uniformly obtained, wherein the weight ratio of PC:PBT:AES:E-MA-GMA is: 50:50:20:4; the mixture is put into the hopper of the twin-screw extruder and extruded at 270℃ Blending, extruding, drawing, cooling, granulating, the main engine speed of the twin-screw extruder is 40rpm / min to obtain PC / PBT / AES pellet samples; the PC / PBT / AES pellets obtained by extrusion and pelletizing The samples were dried at 120°C for 12 hours, and then injection molded to prepare standard PC / PBT / AES alloy material test specimens. E-MA-G...

Embodiment 3

[0037] A toughened PC / PBT / AES alloy material comprising the following components in parts by weight: 30 parts of PC, 40 parts of PBT, 2 parts of AES, and 2 parts of E-MA-GMA. The MA content in E-MA-GMA is 30wt%, and the GMA content is 15wt%.

[0038] Heat PC and PBT in a vacuum drying oven at 120°C for 9 hours; AES in a vacuum drying oven at 100°C for 10 hours; the resulting dried PC, PBT, AES and E-MA-GMA are added to the high-speed mixer for mixing The mixture is uniformly obtained, where the weight ratio of PC:PBT:AES:E-MA-GMA is: 30:40:2:2; the mixture is put into the hopper of the twin-screw extruder and extruded at 250°C Blending, extruding, drawing, cooling, granulating, the main engine speed of the twin-screw extruder is 70 rpm / min to obtain PC / PBT / AES pellet samples; the PC / PBT / AES pellets obtained by extrusion and pelletizing The samples were dried at 120°C for 12 hours, and then injection molded to prepare standard PC / PBT / AES alloy material test specimens. E-MA-GMA c...

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Abstract

The invention discloses a toughened PC / PBT / AES alloy material. The alloy material comprises the following components, by weight, 30 to 60 parts of polycarbonate, 40 to 70 parts of thermoplastic polyester and 2 to 20 parts of acrylonitrile-EPDM rubber-styrene copolymer. The invention further discloses a preparing method of the toughened PC / PBT / AES alloy material. According to the alloy material and the preparing method, the mobility of PC is remarkably improved, the machining property, the stress cracking resistant property and the chemical resistant property of PC are improved, and cost is reduced. Meanwhile, the defects of PBT caused when PBT is independently used can be overcome, wherein the defects refer to the inclination of buckling deformation in the machining process and the like. A PC / PBT / E-MA-CMA polymer blend has good solvent resistance, abrasive resistance, dimensional stability and stress cracking resistance, the compatibility of the alloy material is obviously improved through E-MA-CMA, a PC / PBT alloy material is obviously toughened due to addition of AES, physical and mechanical properties are good, and shock resistance is greatly improved.

Description

Technical field [0001] The invention belongs to the technical field of polymer materials, and specifically relates to a toughened PC / PBT / AES alloy material and a preparation method thereof. Background technique [0002] Polycarbonate (PC, polycarbonate) is one of the five general engineering plastics, and its output and consumption are second only to polyamide (PA, or nylon). From the structural point of view, PC can be roughly divided into aliphatic (such as polypropylene carbonate PPC), aromatic (such as bisphenol A type), aliphatic-aromatic and other types. Among them, the lower mechanical properties of aliphatic and aliphatic-aromatic polycarbonates limit their application in engineering plastics. At present, only aromatic polycarbonate has obtained industrial production. What people usually call PC refers to bisphenol A type PC. PC is an amorphous polymer, and its special molecular structure gives it excellent comprehensive properties. The flexible carbonate groups and...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L67/02C08L51/04C08L23/08B29C47/92B29C48/92
CPCB29B7/7461B29B9/12B29B7/46B29B9/06B29C47/92B29B7/72B29C48/40B29C48/92B29C2948/92704
Inventor 鲁平才徐剑赵银主
Owner 句容市育达实业投资有限公司
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