Antistatic plastic for SMT carrier band, and preparation and use thereof

An anti-static, plastic technology, used in chemical instruments and methods, other chemical processes, packaging, etc., can solve the problems of high rigidity and flexural strength, small physical properties, and achieve good rigidity, easy processing, increased toughness and The effect of steel

Active Publication Date: 2009-07-08
浙江三和塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing SMT assembly uses SMT carrier tape to be antistatic material, as the Chinese invention patent application (application number is: 200580029755.3) discloses that the difference in physical properties in longitudinal and transverse directions is small, rigidity and folding strength are high, and it is easy to be thermoformed into a disc or Conductive composite sheet with embossed carrier tape

Method used

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  • Antistatic plastic for SMT carrier band, and preparation and use thereof
  • Antistatic plastic for SMT carrier band, and preparation and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Anti-static plastic for SMT carrier tape, the anti-static plastic is composed of the following components by weight percentage: conductive carbon black 20%, polystyrene 55%, styrene butadiene copolymer elastic SBS 20%, polyethylene reinforced Soft masterbatch 3%, antioxidant-AO-500.5%, coupling KH5701.5%.

[0027] The preparation method of the above-mentioned antistatic plastic particles, the method includes the following steps: according to the formula, kneading for 45 minutes under the condition of 55 ° C, feeding to the extruder for extrusion, the speed of the feeder is 500 rpm, and the extruded The temperature is 180°C, the rotation speed of the extruder is 600 rpm, and then it is obtained by cooling, pelletizing and drying.

Embodiment 2

[0029] Anti-static plastic for SMT carrier tape, the anti-static plastic is composed of the following components by weight percentage: conductive carbon black 15%, polystyrene 65%, styrene butadiene copolymer elastic SBS 10%, polyethylene reinforced Soft masterbatch 8%, antioxidant-AO-500.5%, coupling KH5701.5%.

[0030] The preparation method of the above-mentioned antistatic plastic particles, the method includes the following steps: according to the formula, kneading for 45 minutes under the condition of 55 ° C, feeding to the extruder for extrusion, the speed of the feeder is 500 rpm, and the extruded The temperature is 180°C, the rotation speed of the extruder is 600 rpm, and then it is obtained by cooling, pelletizing and drying.

Embodiment 3

[0032] Anti-static plastic for SMT carrier tape, the anti-static plastic is composed of the following components by weight percentage: conductive carbon black 10%, polystyrene 80%, styrene butadiene copolymer elastic SBS 5%, polyethylene reinforced Soft masterbatch 3%, antioxidant-AO-500.5%, coupling KH5701.5%.

[0033] The preparation method of the above-mentioned antistatic plastic particles, the method includes the following steps: according to the formula, kneading for 45 minutes under the condition of 55 ° C, feeding to the extruder for extrusion, the speed of the feeder is 500 rpm, and the extruded The temperature is 180°C, the rotation speed of the extruder is 600 rpm, and then it is obtained by cooling, pelletizing and drying.

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Abstract

The invention relates to an antistatic plastic for an SMT carrier band, a preparation method thereof, and a composite plastic sheet prepared from the antistatic plastic. The antistatic plastic for the SMT carrier band consists of the following compositions mixed in percentage by weight: 5 to 45 percent of conductive black carbon, 30 to 90 percent of polystyrene, 5 to 45 percent of styrene-butadiene copolymer elastic SBS, 1 to 13 percent of a toughening agent, 0.1 to 2.8 percent of an antioxidant, and 0.3 to 3.8 percent of a coupling agent. The invention also discloses the composite plastic sheet prepared from the antistatic plastic. The antistatic plastic has good rigidity, good toughness, good aging resistance and easy molding with surface antistatic index of between 10 and 10omega. The composite material with a three-layer structure saves use of the antistatic material on one side, and improves toughness and rigidity of the product on the other side, and is easy for processing. The composite material has tensile strength of between 22 and 24MPa widthwise and between 27 and 31MPa lengthwise, and has tensile stretch of between 54 and 84 percent widthwise and between 66 and 110 percent lengthwise.

Description

technical field [0001] The invention relates to an antistatic plastic used for SMT carrier tape, a preparation method thereof and a composite plastic sheet prepared by using the antistatic plastic. Background technique [0002] SMT has high assembly density, small size and light weight of electronic products. The volume and weight of patch components are only about 1 / 10 of traditional plug-in components. Generally, after using SMT, the volume of electronic products is reduced by 40% to 60%, and the weight is reduced by 60%. ~80%, high reliability, strong anti-vibration ability, easy to realize automation, and improve production efficiency. The cost can be reduced by 30% to 50%, and the material, energy, equipment, manpower and time can be saved. The pursuit of miniaturization of electronic products, the perforated plug-in components used in the past can no longer be reduced, and the functions of electronic products are more complete. The integrated circuits (IC) used have n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L53/02C08K3/04C09K3/16B32B27/08B32B27/20B29C47/00B65D73/02B65D85/86
Inventor 吴中心张宝成
Owner 浙江三和塑料有限公司
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