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TPE material for encapsulating ABS and preparation process for TPE material

A preparation process and encapsulation technology, which is applied in the field of TPE materials and its preparation process, can solve the problems of poor encapsulation molding quality, soft rubber peeling or cracking, and affecting the bonding effect, etc., and achieve low peeling success rate and fracture Increased tensile stress and elongation at break, improving the success rate

Inactive Publication Date: 2017-05-31
慈溪市山今高分子塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since a large amount of TPU is added to the soft rubber, the tensile strength and tear strength of ABS can be improved after it is coated with ABS. However, the soft rubber has poor compatibility with ABS soft and hard materials, which affects the compatibility with ABS. Adhesive effect, it is easy for the soft glue to peel off or crack from the surface of the ABS part, and the quality of the overmolding is not good

Method used

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  • TPE material for encapsulating ABS and preparation process for TPE material
  • TPE material for encapsulating ABS and preparation process for TPE material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) Select the following components and their mass parts: 20 parts of SEBS6151 and 31 parts of KN4006, and set the speed at 600r / min in the high-speed mixer to mix for 3 minutes;

[0046] (2) Add the following components and mass parts thereof to the material mixed in step (1): 8 parts of WHT1180EC, 6 parts of WHT1185EC, 10 parts of maleic anhydride grafted SEBS, 6 parts of maleic anhydride grafted ABS, 10 parts of calcium carbonate, 9 parts of EMA1125A, 0.1 part of silicone powder, 0.4 part of antioxidant, 0.3 part of zinc stearate, set the speed at 1100r / min and mix for 2.2min;

[0047] (3) Put the material mixed in step (2) into a twin-screw extruder with a length-to-diameter ratio of 44:1, set the melting temperature to 200°C, the body speed to 240r / min, and the residence time to be 2min. Granules to obtain TPE materials for encapsulating ABS.

Embodiment 2

[0049] (1) Select the following components and their mass parts: 25 parts of SEBS6154 and 30 parts of KN4010, set the speed of 650r / min in the high-speed mixer and mix for 2.7min;

[0050] (2) Add the following components and mass parts thereof to the material mixed in step (1): 7 parts of WHT1180EC, 8 parts of WHT1185EC, 12 parts of maleic anhydride grafted SEBS, 7 parts of maleic anhydride grafted ABS, 9 parts of calcium carbonate, 5 parts of EX8900, 0.2 part of silicone powder, 0.2 part of antioxidant, 0.4 part of zinc stearate, set the rotation speed at 1200r / min and mix for 2.2min;

[0051] (3) Put the material mixed in step (2) into a twin-screw extruder with a length-to-diameter ratio of 48:1, set the melting temperature to 210°C, the body speed to 270r / min, and the residence time to be 2.2min. Granulate to obtain TPE material for encapsulating ABS.

Embodiment 3

[0053] (1) Select the following components and their mass parts: 30 parts of SEBS9551, 15 parts of KN4006, and 20 parts of KN4010, and set the speed in the high-speed mixer to 700r / min and mix for 2.5 minutes;

[0054] (2) Add the following components and mass parts thereof to the material mixed in step (1): 5 parts of WHT1180EC, 5 parts of WHT1185EC, 14 parts of maleic anhydride grafted SEBS, 8 parts of maleic anhydride grafted ABS, 8 parts of calcium carbonate, 3 parts of EMA1125A, 7 parts of AX8900, 0.2 parts of silicone powder, 0.3 parts of antioxidant, 0.2 parts of zinc stearate, set the speed at 1300r / min and mix for 2.3 minutes;

[0055] (3) Put the material mixed in step (2) into a twin-screw extruder with a length-to-diameter ratio of 48:1, set the melting temperature to 220°C, the body speed to 300r / min, and the residence time to be 2.5min. Granulate to obtain TPE material for encapsulating ABS.

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Abstract

The invention discloses a TPE material for encapsulating ABS and a preparation process for the TPE material. The TPE material and the preparation process therefor are used for solving the problems that TPE materials have poor compatibility with two kinds of ABS materials, i.e., soft and hard materials, the effect of binding with ABS is affected, the situation that TPE soft rubber peels off or cracks from the surface of an ABS workpiece easily occurs, and the quality of encapsulated forming is poor. The key of the technical scheme of the invention is as follows: the TPE material for encapsulating the ABS is prepared from the following ingredients in parts by mass: SEBS, mineral oil, TPU, maleic anhydride grafted SEBS, TPU grafted SEBS, maleic anhydride grafted ABS, calcium carbonate, a toughener, a slipping agent, an antioxidant and zinc stearate. The aims of having relatively good compatibility and improving the quality of encapsulated ABS while improving the tensile strength and tear strength of the ABS and improving the gripping hand feeling of ABS products are achieved.

Description

technical field [0001] The invention relates to a plastic elastomer, in particular to a TPE material used for encapsulating ABS and a preparation process thereof. Background technique [0002] ABS resin is a widely used polymer. It organically unifies the various properties of BS, SAN, and PS. BS improves its toughness, impact and cold resistance; SAN endows ABS resin with chemical stability, Oil resistance, certain stiffness and hardness; PS makes it have good dielectric properties and presents good processability. It is found in actual use that ABS products made of ABS rubber have stable dimensions, excellent mechanical properties of toughness, hardness, and rigid phase balance, and excellent low-temperature impact resistance. Therefore, ABS is often used to make the grip part of the tool. [0003] Through overmolding technology, the functionality and added value of ABS products can be increased. For example, the publication number is CN101508838A, a kind of soft rubber...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/02C08L75/04C08L51/00C08L55/02C08L23/08C08L83/04C08L91/06C08L87/00C08K13/02C08K3/26C08K5/134C08K5/526C08K5/098
CPCC08L53/025C08L91/06C08L2205/035C08L75/04C08L51/006C08L55/02C08L23/0869C08L83/04C08L87/00C08K13/02C08K2003/265C08K5/1345C08K5/526C08K5/098
Inventor 岑建达郭运华
Owner 慈溪市山今高分子塑料有限公司
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