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High-light-shielding high-impact-resistance PC/PBT alloy material and preparation method thereof

An alloy material and high-impact technology, which is applied in the field of high light-shielding and high-impact PC/PBT alloy materials and their preparation, can solve the problems of high notch sensitivity, limited application range, and low notch impact strength, and achieve cost reduction, Effects of improving mechanical properties and improving rigidity

Inactive Publication Date: 2019-06-14
太仓市华鼎塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PC / PBT has problems such as low notched impact strength, high notch sensitivity, etc., which will greatly limit its application range

Method used

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  • High-light-shielding high-impact-resistance PC/PBT alloy material and preparation method thereof
  • High-light-shielding high-impact-resistance PC/PBT alloy material and preparation method thereof

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preparation example Construction

[0041] Simultaneously, the present invention also provides a kind of preparation method of PC / PBT alloy material with high shading and high impact resistance, and described preparation method comprises the following steps:

[0042] 1) According to the proportion, add the polycarbonate, polybutylene terephthalate and coupling agent into the stirring tank, stir at the speed of 800-1000 rpm for 10-15 minutes, and mix well;

[0043] 2) Add the compatibilizer, transesterification inhibitor, antioxidant and light stabilizer into the stirring tank according to the proportion, stir at a speed of 1200-1400 rpm for 20-30 minutes, and mix well;

[0044] 3) adding the inorganic filler into the stirring tank according to the proportion, stirring at a speed of 800-1000 rpm for 5-10 minutes, and mixing evenly to obtain a mixed material;

[0045]4) Put the mixed material into a twin-screw extruder, control the barrel temperature of the twin-screw extruder at 230-260° C., extrude and pelletize...

Embodiment 1

[0051] The high light-shielding high-impact PC / PBT alloy material includes the following components by weight:

[0052] Polycarbonate: 35 parts, polybutylene terephthalate: 20 parts, inorganic filler: 13 parts, compatibilizer: 7 parts, transesterification inhibitor: 2 parts, antioxidant: 3 parts, photostable Agent: 4 parts, coupling agent: 3 parts.

[0053] The performance parameters of the prepared high light-shielding and high-impact PC / PBT alloy material are shown in Table 2.

[0054] Table 2

[0055]

[0056]

Embodiment 2

[0058] The high light-shielding high-impact PC / PBT alloy material includes the following components by weight:

[0059] Polycarbonate: 40 parts, polybutylene terephthalate: 15 parts, inorganic filler: 15 parts, compatibilizer: 5 parts, transesterification inhibitor: 5 parts, antioxidant: 1 part, photostable Agent: 1 part, coupling agent: 5 parts.

[0060] The performance parameters of the prepared high light-shielding and high-impact PC / PBT alloy material are shown in Table 3.

[0061] table 3

[0062] serial number

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Abstract

The invention provides a high-light-shielding high-impact-resistance PC / PBT alloy material and a preparation method thereof. The alloy material comprises the following components in parts by weight: 30-40 parts of polycarbonate, 15-25 parts of polybutylene terephthalate, 10-15 parts of an inorganic filler, 5-10 parts of a compatilizer, 1-5 parts of an ester exchange inhibitor, 1-5 parts of an antioxidant, 1-5 parts of a light stabilizer and 1-5 parts of a coupling agent. The alloy material has the advantages of high light shielding property, high toughness, good solvent resistance, dimensionalstability, high strength, easiness in forming and the like, and the material cost is reduced on the premise that the optical property and the notch impact strength are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of alloy materials, and in particular relates to a PC / PBT alloy material with high shading and high impact resistance and a preparation method thereof. Background technique [0002] Polycarbonate (PC) has excellent performance, has tough and rigid mechanical properties, and its unnotched impact strength ranks first among engineering plastics. It has good creep resistance and high glass transition temperature, which can be in the range of 120°C-130°C Continuous use, good electrical insulation and dimensional stability: but PC has high melt viscosity, poor fluidity, solvent resistance, and wear resistance, and is sensitive to notches. [0003] Polybutylene terephthalate (PBT) is a milky white translucent to opaque crystalline thermoplastic polyester, because of its excellent comprehensive properties such as good rigidity and hardness, low water absorption, and chemical resistance, And good formability. Howev...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L67/02C08L23/08C08K13/02C08K3/22C08K3/34C08K5/134
Inventor 徐卢碧马凤贺徐军时亚赵小康万吴军
Owner 太仓市华鼎塑料有限公司
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