Thermoplastic composite product

A composite material and thermoplastic technology, applied in the field of thermoplastic composite products, can solve the problems of low molding pressure, high labor intensity, low production efficiency, etc., and achieve the effects of good impact resistance, accurate product size, and stable product quality.

Inactive Publication Date: 2016-07-13
NINGBO SHUANGMA MASCH IND CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

At present, the processing and molding processes of carbon fiber composite materials mainly include: hand lay-up molding, winding molding, resin transfer molding and pellet injection molding. Among them: hand lay-up molding and winding molding have low production efficiency, high labor intensity, and difficult product quality. Control, and the use of thermosetting resin materials, can not be recycled and other shortcomings, mainly used in the production of simple-shaped parts in automobile parts, it is difficult to meet the requirements of industrial production and environmental protection of automobiles; the main characteristics of the resin transfer molding process are closed mold operation, No pollution, low molding pressure, reinforcing materials can be laid according to design requirements, both sides of the product are smooth, and large-scale products with complex shapes can be

Method used

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  • Thermoplastic composite product

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Example Embodiment

[0011] The present invention will be described in further detail below in conjunction with the embodiments of the drawings.

[0012] A thermoplastic composite material product obtained by injection molding processing of carbon fibers, thermoplastics and additives. More than 50% of the carbon fibers in the processed product have a length of 5mm, and all the carbon fibers with a length greater than or equal to 5mm are 5-30mm in length. Carbon fiber accounts for 50%-95%. The carbon fiber is made by adding continuous carbon fiber roving 3 into the twin-screw extruder 2 to mix with the polymer of pre-melted thermoplastic and additives, and mix it by the twin-screw extruder 2 at the same time. The carbon fiber roving 3 is roughly cut, and then the mixture output from the twin-screw extruder 2 is injected into the mold 5 through the injection cylinder 4 of the injection molding machine. During the molding process, the injection runner and the mold runner perform the rough cutting process...

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Abstract

The invention discloses a thermoplastic composite product.The product is characterized by being obtained by processing carbon fiber, thermoplastic plastic and additive through injection molding, and the length of 50% or above of carbon fiber in the processed product is larger than or equal to 5 mm.The product has the advantages that the length of most (50% or above) of carbon fiber in the processed product is 5 mm to 30 mm, so the processed product is good in impact resistance and can be used as a functional structural piece such as an automobile hub, a bumper, a reinforcing beam and a supporting frame; the product is obtained by online mixing injection molding of an injection molding machine, a connecting pipeline of a twin-screw extruder and the injection molding machine is in a closed state during processing, the temperature and pressure of polymer are controllable in the whole process, and the product is stable in quality, can be processed into a product of a complex structure, and is precise in size, free of post-processing and high in production efficiency; in addition, through the combination of the injection molding process technology during processing, the more precise thermoplastic composite product is obtained through processing.

Description

technical field [0001] The invention relates to products processed from composite materials, in particular to a thermoplastic composite product with better impact resistance. Background technique [0002] Carbon fiber composites are widely used in many fields because of their light weight, good strength and other good material properties. At present, the processing and molding processes of carbon fiber composite materials mainly include: hand lay-up molding, winding molding, resin transfer molding and pellet injection molding. Among them: hand lay-up molding and winding molding have low production efficiency, high labor intensity, and difficult product quality. Control, and the use of thermosetting resin materials, can not be recycled and other shortcomings, mainly used in the production of simple-shaped parts in automobile parts, it is difficult to meet the requirements of industrial production and environmental protection of automobiles; the main characteristics of the res...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/12C08L27/06C08L25/06C08L59/00C08L69/00C08L77/00C08L33/00C08L23/00C08L81/06C08L71/12C08L71/00C08K7/06
CPCC08L23/06C08K7/06C08K2201/004C08L23/00C08L23/12C08L25/06C08L27/06C08L33/00C08L59/00C08L69/00C08L71/00C08L71/12C08L77/00C08L81/06C08L2205/03C08L2205/035
Inventor 陈炽辉刘玉鹏张洪施海明邹骞沈明聪
Owner NINGBO SHUANGMA MASCH IND CO LTD
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