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Case material for liquid crystal display television capacitors and preparation method of case material

A shell material and LCD TV technology, applied in the field of capacitor materials, can solve the problems that affect the industrial application of ABS/PC alloys, the limited improvement of the compatibility of blends, and the high cost of compatibilizers, so as to improve notch sensitivity and anti-aging And the effect of better flame retardant performance and good fluidity

Inactive Publication Date: 2017-08-18
ANHUI CAIJING PHOTOELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the current production technology research results have improved the toughness and compatibility of ABS / PC alloys, and improved the processing performance of alloy materials, there are still some defects, such as poor impact resistance and high cost of compatibilizers, which affect The industrial application of ABS / PC alloy in some fields
For example, the Chinese invention patent "ABS / PC Modified Alloy" with publication number CN101096441A discloses a high-toughness ABS / PC modified alloy, which uses a compatibilizing toughening agent to improve the impact properties of the blend , but the compatibility improvement of the blend is limited
[0005] The Chinese invention patent with the publication number CN104086971A discloses a high-fluidity flame-retardant polycarbonate-polystyrene composition, which has a good balance between fluidity, rigidity, and heat resistance, but Relatively poor impact resistance

Method used

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  • Case material for liquid crystal display television capacitors and preparation method of case material
  • Case material for liquid crystal display television capacitors and preparation method of case material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A preparation method for a casing material of a liquid crystal television capacitor, comprising the following steps:

[0028] (1) Weigh the raw materials of each component according to the following weight percentage: ABS 10%, PC 35%, HIPS 40%, EVA 3.5%, KT-5A 1%, ABS-g-MAH 2.2%, SMA 2%, MBS 2%, stearyl alcohol 1%, dioctadecyl thiodipropionate 0.4%, tris(2,4-di-tert-butylphenyl) phosphite 0.7%, MDH 0.7%, TPP 1.1%, pentaerythritol 0.2% ester, 0.2% silicone oil;

[0029] (2) Dry ABS and PC at 100°C for 24 hours, and HIPS at 80°C for 3 hours, and set aside;

[0030] (3) Combine dry ABS, PC, HIPS with EVA, KT-5A, ABS-g-MAH, SMA, MBS, stearyl alcohol, dioctadecyl thiodipropionate, three (2,4-di tert-butylphenyl) phosphite, MDH, TPP organic phosphate flame retardant, and pentaerythritol ester are mixed in a high-speed mixer, and the mixing time is 10 minutes;

[0031] (4) Melt, mix, extrude and granulate the material in step (3) with a co-rotating twin-screw extruder, the ...

Embodiment 2

[0033] A preparation method for a casing material of a liquid crystal television capacitor, comprising the following steps:

[0034] (1) Weigh the raw materials of each component according to the following weight percentage: ABS 20%, PC 30%, HIPS 33%, EVA 1%, EMA 1%, EMG 2%, PTW 1%, MBS 3.5%, silicone 0.7% , Dioctadecyl thiodipropionate 0.6%, p-phenylenediamine 0.7%, ZB 2.3%, RDP 1%, TPP 0.4%, pentaerythritol ester 1.6%, silicone oil 0.2%;

[0035] (2) Dry ABS and PC at 110°C for 24 hours, and HIPS at 90°C for 3 hours, and set aside;

[0036] (3) Mix dry PC and HIPS with KT-5A, SEBS, MBS, stearyl alcohol, silicone, dioctadecyl thiodipropionate, p-phenylenediamine, BDP, silicone oil in a high-speed mixer , the mixing time is 12min;

[0037] (4) The material in step (3) is melted, mixed, extruded and granulated with a co-rotating twin-screw extruder, the temperature of the extruder is 195° C., the screw speed is 250 r / min, and the obtained pellets are cooled and dried. That i...

Embodiment 3

[0039] A preparation method for a casing material of a liquid crystal television capacitor, comprising the following steps:

[0040] (1) Weigh the raw materials of each component according to the following weight percentage: ABS 16%, PC 55%, HIPS 15%, EVA 1.2%, ABS-g-MAH 0.5%, SMA 1.5%, EMA 1%, MBS 3% , stearyl alcohol 0.3%, silicone 0.2%, dioctadecyl thiodipropionate 0.4%, p-phenylenediamine 1.6%, MDH 0.2%, ZB 1.6%, BDP 0.6%, TPP 0.7%, pentaerythritol ester 1.6%, silicone oil 0.2%;

[0041] (2) Dry ABS and PC at 120°C for 24 hours, and HIPS at 100°C for 4 hours, and set aside;

[0042] (3) Dry ABS, PC, HIPS, EVA, ABS-g-MAH, SMA, EMA, MBS, stearyl alcohol, silicone, dioctadecyl thiodipropionate, p-phenylenediamine, MDH , ZB, BDP, TPP, pentaerythritol ester, and silicone oil are mixed in a high-speed mixer, and the mixing time is 13 minutes;

[0043] (4) Melt, mix, extrude and granulate the material in step (3) with a co-rotating twin-screw extruder, the extruder temperature i...

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Abstract

The invention relates to the technical field of capacitor materials, in particular to a case material for liquid crystal display television capacitors and a preparation method of the case material. The case material is prepared from, by weight, 10-25% of ABS, 20-55% of PC, 15-40% of HIPS, 1-3.5% of EVA, 3-6% of compatilizer, 2-7% of MBS, 0.5-1% of lubricant, 0.5-2% of antioxidant, 0.5-2.5% of inorganic inorganic flame retardant, 1-1.5% of organic phosphate flame retardant, 0.2-2% of processing agent, and 0.2% of silicone oil. The preparation method includes weighing and drying ABS, PC and HIPS, mixing the dried ABS, PC and HIPS with other materials to obtain a mixture, and extruding the mixture by a co-rotating dual-screw extruder to realize granulation. The flame retardants added are featured by low smoke, zero toxicity, environmental friendliness and the like. Compared with the conventional method for preparing alloy materials, the preparation method has the advantages of simple technique, the product prepared by the method has the advantages of stable quality, low cost, excellent property of ageing resistance and flame retardance, good fluidity, high heat deflection temperature and good mechanical property, is adaptable to scale production, and has good application prospect.

Description

technical field [0001] The invention relates to the technical field of capacitor materials, in particular to a casing material for liquid crystal television capacitors and a preparation method thereof. Background technique [0002] With the acceleration of the upgrading of digital electronic products, the industrial growth of capacitors, the main electronic components, is driven, and the demand for capacitor shells is also increasing. At present, capacitor shells are usually made of acrylonitrile-butadiene-styrene copolymer (ABS), polycarbonate (PC), polystyrene (PS) and the like. ABS resin is currently the polymer with the largest output and the most widely used. It has excellent characteristics such as high impact resistance, high heat resistance, easy processing, chemical resistance and electrical properties, good toughness, and flame retardancy. However, ABS has the disadvantages of flammability, low heat distortion temperature, and poor weather resistance. Moreover, A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/04C08L69/00C08L55/02C08L23/08C08L83/04C08L35/06C08K5/526C08K13/02C08K5/18C08K3/22C08K3/38
CPCC08L51/04C08K2003/2224C08K2003/387C08L69/00C08L2201/02C08L2201/08C08L2205/025C08L2205/035C08L2205/08C08L55/02C08L23/0853C08L83/04C08L35/06C08K13/02C08K5/526C08K3/22C08K3/38C08L23/0869C08K5/18
Inventor 方明龙肖庆春王鹏
Owner ANHUI CAIJING PHOTOELECTRIC
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