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Injection mold macromolecule alloy material for magnetic card

A polymer alloy and magnetic card technology, applied in the field of polymer alloy materials, can solve problems such as unsatisfactory impact toughness, poor processing fluidity, and poor thermal stability, and achieve excellent fluidity, good dimensional stability, Excellent corrosion resistance effect

Inactive Publication Date: 2006-11-01
SHANGHAI KUMHO SUNNY PLASTICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The materials used in traditional card making are generally PVC and ABS. After PVC and additives are evenly mixed, the sheet is extruded through an extruder, and then cut to make a finished product. The production efficiency is low and the post-processing process is complicated.
If PVC is directly injected, due to the poor thermal stability and fluidity of PVC, it is difficult to inject thin-walled products, and it is not conducive to environmental protection due to the halogen content; ABS is used as raw material to make cards, although injection molding can be used, but the processing is fluid Poor performance, unsatisfactory impact toughness, especially poor bending resistance in the flow direction

Method used

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Embodiment

[0024] Polybutylene terephthalate 50g, acrylonitrile-butadiene-styrene copolymer 34.5g, polymethyl methacrylate 10g, styrene-acrylonitrile copolymer 5g, antioxidant 0.3g, lubricant 0.2g, uniformly mixed with a small powder machine, extruded through a twin-screw extruder, cooled, dried, and pelletized to obtain the finished product. The residence time of the material in the screw is 2 minutes, the temperature in the twin-screw extruder is 200-240°C, and the pressure is 60-80Mpa. The mechanical properties of the finished product are as follows: tensile strength (50mm / min) 45.5Mpa, elongation at break (50mm / min) 168.5%, flexural strength 68.9Mpa, flexural modulus 1660.8Mpa, notched impact strength 689.7J / m, melt index (230°C×10kg) 49.9. Bending resistance in the flow direction: bending at 90 degrees, no stress whitening; folding at 180 degrees without cracking, cracking after 5 folds.

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PUM

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Abstract

The invention relates to a polymer alloy material for an injection moldable magnetic card, which comprises PBT (polybutylene terephthalate), ABS (acrylonitrile-butadiene-styrene copolymer), PMMA (polymethacrylate Grease), SAN (styrene-acrylic resin copolymer) and additives are evenly mixed according to a certain ratio, and then melted, blended and extruded by a twin-screw extruder to obtain a high-performance polymer alloy for injection molding grade magnetic cards Material. This kind of melt blending system is a crystalline / amorphous blending system, which reduces the influence of the unbalanced properties of the material in the flow direction and vertical direction due to polymer orientation, and its impact toughness, fluidity and bending resistance in the flow direction are significantly higher for other magnetic card materials. The post-processing technology is simple, and various information cards can be made by injection molding. It overcomes the disadvantages that PVC, the traditional card making material, cannot be produced by injection molding, and the efficiency is low, while when using ABS to inject magnetic cards, the disadvantages of poor folding resistance in the flow direction are caused by molecular orientation.

Description

technical field [0001] The invention relates to an injectable polymer alloy material for magnetic cards, which can be used to manufacture various information cards, such as magnetic cards, IP cards, mobile phone cards, etc., and belongs to the technical field of polymer alloy materials. Background technique [0002] The materials used in traditional card making are generally PVC and ABS. After PVC and additives are evenly mixed, the sheet is extruded through an extruder, and then cut to make a finished product. The production efficiency is low and the post-processing process is complicated. If PVC is directly injected, due to the poor thermal stability and fluidity of PVC, it is difficult to inject thin-walled products, and it is not conducive to environmental protection due to the halogen content; ABS is used as raw material to make cards, although injection molding can be used, but the processing is fluid The performance is not good, the impact toughness is not ideal, espe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/03C08L55/02B29C47/40
Inventor 辛敏琦刘春艳
Owner SHANGHAI KUMHO SUNNY PLASTICS
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