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Low-temperature-resistant impact-resistant PC composite material, preparation thereof and application thereof in air conditioner shell

A composite material and impact-resistant technology, which is applied in the field of low-temperature-resistant and impact-resistant PC composite materials and its preparation and application in air-conditioning shells, can solve the impact of PC resin on impact performance, low-temperature resistance to impact strength reduction, unfavorable PC composite materials, etc. Problems, to achieve excellent low temperature resistance and impact resistance and other mechanical properties, excellent impact resistance, and excellent overall quality

Active Publication Date: 2020-09-01
宁波德伟电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this prior art has the following problems: first, the strength of PC is increased after fiber addition, but the impact toughness is greatly reduced, especially the low temperature impact resistance is greatly reduced, which limits its scope of application; second, PC is an amorphous polymer material, its binding force with glass fiber is poor, resulting in the appearance of the product floating fiber is obvious; third, adding more flame retardant bisphenol A bis (diphenyl phosphate), the impact performance of PC resin is relatively large It is not conducive to the preparation of PC composite materials with low temperature resistance and high impact resistance

Method used

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  • Low-temperature-resistant impact-resistant PC composite material, preparation thereof and application thereof in air conditioner shell
  • Low-temperature-resistant impact-resistant PC composite material, preparation thereof and application thereof in air conditioner shell
  • Low-temperature-resistant impact-resistant PC composite material, preparation thereof and application thereof in air conditioner shell

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preparation example

[0043] The toughening agent used in the present invention obtains through following treatment operation to metallocene ethylene-octene copolymer:

[0044] Add the commercially available metallocene ethylene-octene copolymer into the ozone generator, and control the gas flow in the ozone generator to be 0.1m 3 / h, the ozone concentration is 55mg / L, the molar ratio of ozone to metallocene ethylene-octene copolymer is 1.3:1, and the treatment is 100min to obtain the toughening agent metallocene ethylene-octene copolymer after ozonation reaction treatment. Wherein, the molar ratio of ozone to the metallocene ethylene-octene copolymer can also be 1:1, 2:1, etc., mainly to ensure that the molar amount of ozone is not less than that of the metallocene ethylene-octene copolymer.

[0045] White carbon black among the present invention is the white carbon black through pretreatment, and concrete treatment operation is:

[0046] Commercially available white carbon black and silane coupl...

Embodiment 1

[0050] A low-temperature-resistant and impact-resistant PC composite material, which is prepared by the following operations:

[0051] (1) According to the dosage shown in Table 1, add PC resin, toughening agent and white carbon black into the mixer and mix them, and mix them at 225°C for 45 minutes to obtain material A;

[0052] (2) Add barium sulfate and alkali-free glass fiber to material A, stir evenly, obtain material B;

[0053] (3) Add antioxidant and halogen-free flame retardant to material B, melt and mix at 230°C for 5 minutes to obtain material C;

[0054] (4) Add material C to the twin-screw extruder, control the temperature of the front section of the barrel to 240°C, the temperature of the middle section to 230°C, the temperature of the rear section to 220°C, the temperature of the mold to 90°C, and the speed of the main engine to 350r / min. Pelletizing to obtain low temperature and impact resistant PC composite materials.

Embodiment 2

[0056] A low-temperature-resistant and impact-resistant PC composite material, which is prepared by the following operations:

[0057] (1) According to the dosage shown in Table 1, add PC resin, toughening agent and white carbon black into the mixer and mix them, and mix them at 235°C for 45 minutes to obtain material A;

[0058] (2) Add barium sulfate and alkali-free glass fiber to material A, stir evenly, obtain material B;

[0059] (3) Add antioxidant and halogen-free flame retardant to material B, melt and mix at 238°C for 5 minutes to obtain material C;

[0060] (4) Add material C to the twin-screw extruder, control the temperature of the front section of the barrel to 240°C, the temperature of the middle section to 230°C, the temperature of the rear section to 220°C, the temperature of the mold to 90°C, and the speed of the main engine to 350r / min. Pelletizing to obtain low temperature and impact resistant PC composite materials.

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Abstract

The invention relates to the technical field of modified plastics for electric appliance shells. The invention relates to a PC composite material,, and especially relates to a low-temperature-resistant impact-resistant PC composite material and preparation and application thereof in an air conditioner shell. The low-temperature-resistant impact-resistant PC composite material is prepared from, byweight: 50-80 parts of PC resin, 5-20 parts of alkali-free glass fibers, 20-30 parts of barium sulfate, 5-15 parts of a toughening agent, 2-8 parts of white carbon black, 0.1-0.8 part of an antioxidant and 1-5 parts of a halogen-free flame retardant, wherein the toughening agent is a metallocene ethylene-octene copolymer; the material has the advantages of no floating fiber on the surface, low temperature resistance, impact resistance and good flame retardant property.

Description

technical field [0001] The invention relates to the technical field of modified plastics for electrical appliance casings, in particular to a low-temperature-resistant and impact-resistant PC composite material and its preparation and application in air-conditioner casings. Background technique [0002] As a commonly used electrical appliance, air conditioners have been widely used in people's daily life, including the indoor air conditioner unit and the air conditioner outer unit suspended outdoors; The casing is used to protect the respective internal components. Among them, the shell material of the inner unit of the air conditioner is generally thermoplastic, the common ones in China are ABS material and HIPS material, and the foreign ones are engineering PP material. [0003] However, engineering PP materials have the worst comprehensive properties such as flame retardancy, strength, impact resistance, and toughness; HIPS materials are not easy to yellow, but their str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L23/30C08K13/06C08K7/14C08K3/30C08K9/06C08K7/26C08K5/526
CPCC08L69/00C08K2003/3045C08L2201/02C08L2207/02C08L23/30C08K13/06C08K7/14C08K3/30C08K9/06C08K7/26C08K5/526
Inventor 汤标
Owner 宁波德伟电器有限公司
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