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Surface scratch-resistant TPV composition capable of achieving secondary coating forming with ABS base material and preparation method thereof

A secondary packaging and scratch-resistant technology, which is applied in the field of polymer materials, can solve the problem of not fundamentally eliminating the wear marks or scratches on the surface of the material, so as to increase the surface aesthetics and service life, and the production process is easy to operate, The effect of excellent scratch resistance

Inactive Publication Date: 2017-03-22
广东省石油化工研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, some people add silicone scratch-resistant additives to TPV to form a smooth surface on the surface of the material, so that the brightness of the product will not change significantly after being rubbed or slightly scratched. It is a sensory illusion, and does not fundamentally eliminate the wear marks or scratches on the surface of the material

Method used

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  • Surface scratch-resistant TPV composition capable of achieving secondary coating forming with ABS base material and preparation method thereof

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preparation example Construction

[0046] The preparation method of the surface scratch-resistant TPV composition with the secondary overmolding of the ABS substrate comprises the following steps:

[0047] 1) drying the polyester thermoplastic elastomer at 60-80°C for 4-8 hours;

[0048] 2) Mix the polyester thermoplastic elastomer, TPV, compatibilizer, ethylene-vinyl acetate copolymer and ethylene-acrylic acid ionomer in proportion, and then place them in a parallel co-rotating twin-screw extruder, melt extrude and granulation to obtain a surface scratch-resistant TPV composition that is overmolded with the ABS substrate for the second time.

[0049] Preferably, the screw aspect ratio L / D of the twin-screw extruder is (40-52):1, the screw speed is 200-280 rpm, and the extrusion temperature is 80-220°C.

Embodiment 1

[0052] A surface scratch-resistant TPV composition with secondary overmolding of ABS base material, its raw material components are as follows (mass percentage):

[0053] TPV (self-made, Shore hardness 35A): 31%;

[0054]TPU (C65AHPM, BASF): 40%;

[0055] EPDM-g-MAH (MC512, the light of energy): 8%;

[0056] EVA (40W, DuPont): 6%;

[0057] Na-E / MAA (Surlyn 8920, DuPont): 15%.

[0058] The preparation method of the above-mentioned surface scratch-resistant TPV composition with the secondary overmolding of the ABS substrate comprises the following steps:

[0059] 1) Dry the TPU in a vacuum oven with an oven temperature of 80°C and a drying time of 4 hours;

[0060] 2) Mix TPU, TPV, EPDM-g-MAH, EVA, and Na-E / MAA dried in step 1) uniformly in proportion, place them in a parallel co-rotating twin-screw extruder for melt extrusion, and granulate to obtain Surface scratch-resistant TPV composition with secondary overmolding of ABS substrate.

[0061] The screw length-to-diamete...

Embodiment 2

[0063] A surface scratch-resistant TPV composition with secondary overmolding of ABS base material, its raw material components are as follows (mass percentage):

[0064] TPV (self-made, Shore hardness 45A): 40%;

[0065] TPU (C65AHPM, BASF): 35%;

[0066] EPDM-g-MAH (MC512, the light of energy): 6%;

[0067] EVA (40W, DuPont): 4%;

[0068] Na-E / MAA (Surlyn 8920, DuPont): 15%.

[0069] The preparation method of the above-mentioned surface scratch-resistant TPV composition with the secondary overmolding of the ABS substrate comprises the following steps:

[0070] 1) Dry the TPU in a vacuum oven with an oven temperature of 80°C and a drying time of 4 hours;

[0071] 2) Mix TPU, TPV, EPDM-g-MAH, EVA and Na-E / MAA dried in step 1) uniformly in proportion, and place them in a parallel co-rotating twin-screw extruder for melt extrusion and granulation to obtain Surface scratch-resistant TPV composition with secondary overmolding of ABS substrate.

[0072] The screw length-to-di...

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Abstract

The invention discloses a surface scratch-resistant TPV composition capable of achieving secondary coating forming with an ABS base material and a preparation method thereof. The TPV composition comprises the raw materials of 31%-63% of TPV, 25%-40% of thermoplastic polyester elastomer, 5%-8% of compatilizer, 2%-6% of ethylene-vinyl acetate copolymer and 5%-15% of ethylene-acrylic acid ionomer. The preparation method includes the following steps that (1) the thermoplastic polyester elastomer is dried; and (2) the thermoplastic polyester elastomer, the TPV, the compatilizer, the ethylene-vinyl acetate copolymer and the ethylene-acrylic acid ionomer are evenly mixed in proportion and then the mixture is placed into a parallel co-rotating twin-screw extruder for melt extrusion and pelleting. The surface scratch-resistant TPV composition disclosed by the invention not only has the heat resistance, ageing resistance and low compression permanent deformation of TPV materials but also has the excellent scratch resistance, and the TPV composition can achieve secondary coating with polar resin ABS. The preparation method is simple, the production process is easy to operate, and the surface scratch-resistant TPV composition can be widely used as an ABS secondary coating material with high requirements on the coating surface.

Description

technical field [0001] The invention relates to a surface scratch-resistant TPV composition secondary overmolded with an ABS base material and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] ABS resin is one of the five major synthetic resins. It has excellent impact resistance, heat resistance, low temperature resistance, chemical resistance and electrical properties. It has the advantages of easy processing, stable product size, high surface gloss, and easy coating and coloring. , can carry out secondary processing such as surface metal spraying, electroplating, welding, hot pressing and bonding, and is widely used in industrial fields such as machinery, automobiles, electronic appliances, instrumentation, textiles and construction. It is a thermoplastic with a wide range of uses. plastic. However, the surface of tool grips, handles and other products made of ABS resin is hard and smooth, and lacks physica...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L23/16C08L23/12C08L51/04C08L23/08C08L31/04C08L67/00
CPCC08L75/04C08L23/12C08L23/16C08L2201/08C08L2205/035C08L2205/08C08L2207/04C08L51/04C08L23/0853C08L23/0876C08L51/003C08L67/00C08L51/06C08L31/04
Inventor 朱旭
Owner 广东省石油化工研究院
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