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Thermoplastic alloy and preparation method thereof

A thermoplastic and alloy technology, which is applied in the field of thermoplastic alloy and its preparation, can solve the problems of low toughness, loss, and limited range of toughness improvement.

Active Publication Date: 2013-02-20
KINGFA SCI & TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although ABS resin has excellent comprehensive properties, its application is limited because the toughness of ABS resin is lower than that of some engineering plastics.
[0003] Adding rubber toughening agent to blend and modify ABS is the main method to improve its performance, but the improvement effect, especially the improvement of toughness, is limited, and it is easy to cause the loss of other properties

Method used

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  • Thermoplastic alloy and preparation method thereof
  • Thermoplastic alloy and preparation method thereof
  • Thermoplastic alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Accurately weigh 25kg of ABS resin, 70kg of PCTG, 3kg of EGMA-g-PS, 0.7kg of CHISORB P, 0.7kg of CHISORB 770, and 0.6kg of EBS; fully mixed with a high-speed mixer, and melt-blended using a co-rotating twin-screw extruder A one-step extrusion method (extrusion temperature: 170~250°C) can obtain the thermoplastic alloy of the present invention. The material prepared by this embodiment is injection molded into a standard sample bar for testing with an injection molding machine according to the standard size, and the physical properties after the test are (ISO standard): tensile strength 47MPa, IZOD notched impact strength 66kJ / m 2 , Bending strength 68MPa; Melt index 5g / 10min (220°C / 10kg), Gloss (60 degree angle incidence): 96. The weather resistance is tested according to the ISO4892-2 standard, and the color difference change value ΔE of the material after 300 hours of irradiation is 1.3.

Embodiment 2

[0030] Accurately weigh 60kg of ABS resin, 36kg of PCTG, 2kg of EGMA-g-PS, 0.7kg of CHISORB P, 0.7kg of CHISORB 770, and 0.6kg of EBS; fully mixed with a high-speed mixer, and melt-blended using a co-rotating twin-screw extruder A one-step extrusion method (extrusion temperature: 170~250°C) can obtain the thermoplastic alloy of the present invention. The material prepared by this embodiment is injection molded into a standard sample bar for testing with an injection molding machine according to a standard size, and the physical properties after the test are (ISO standard): tensile strength 45MPa, IZOD notched impact strength 52kJ / m 2 , Bending strength 63MPa; Melt index 14g / 10min (220℃ / 10kg), Gloss (60 degree angle incident): 93. The color difference change value ΔE is 1.8 (the test method is the same as that in Example 1).

Embodiment 3

[0032] Accurately weigh 70kg of ABS resin, 27kg of PETG, 1kg of EGMA-g-PS, 0.7kg of CHISORB P, 0.7kg of CHISORB 770, 0.4kg of EBS, and 0.2kg of silicone oil; fully mixed with a high-speed mixer, and extruded with co-rotating twin-screws The machine adopts the method of melt blending and one-step extrusion (extrusion temperature: 170~250°C) to obtain the thermoplastic alloy of the present invention. The material prepared by this embodiment is injection-molded into a standard sample for testing with an injection molding machine according to a standard size, and the physical properties after the test are (ISO standard): tensile strength 43MPa, IZOD notched impact strength 45kJ / m 2 , Bending strength 62MPa; Melt index 16g / 10min (220°C / 10kg), Gloss (60 degree angle incidence): 91. The color difference change value ΔE is 2.2 (the test method is the same as that in Example 1).

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Abstract

The invention discloses a thermoplastic alloy. The thermoplastic alloy comprises the following components in percentage by weight: 25 to 80 percent of acrylonitrile-butadiene-styrene (ABS) resin, 15 to 70 percent of copolyester, 1 to 5 percent of compatilizer, 0.5 to 1.5 percent of weathering resistant agent and 0.5 to 1.5 percent of processing aid. The preparation method of the thermoplastic alloy comprises the following steps of: pre-mixing the components in a highly mixing machine; adding the mixture into a double-screw extruder; plastifying, mixing and extruding at the temperature of between 170 and 250 DEG C; and cooling and pelleting the mixture to obtain the finished product. The thermoplastic alloy has the advantages of the ABS and the copolyester, high toughness and high weather resistance and can be applied in the field having no requirement on fire resistance but having relatively high requirement on the toughness and the weather resistance of materials.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a thermoplastic alloy and a preparation method thereof. Background technique [0002] ABS is the fifth largest general-purpose plastic in the world, and it is also a high-demand and fast-growing polymer material between engineering plastics and general-purpose plastics. ABS resin has the rigidity and heat resistance of acrylonitrile, the toughness of butadiene, the gloss and processing fluidity of styrene, and is widely used in electronics, electrical appliances, automobiles, textile equipment, construction and daily necessities. Although ABS resin has excellent comprehensive properties, its application is limited because the toughness of ABS resin is lower than that of some engineering plastics. [0003] Blending and modifying ABS by adding rubber toughening agent is the main method to improve its performance, but the improvement effect, especially the improvement of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L55/02C08L67/02C08L79/04C08L53/02C08L51/06B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/92B29C2948/92704B29C2948/92895
Inventor 郭涛程庆王亮胡志华胡浩叶南飚王林
Owner KINGFA SCI & TECH CO LTD