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Flame retarding material of rapid prototyping glass fiber reinforced polyethylene glycol terephthalate and preparation method thereof

A technology of polyethylene terephthalate and flame retardant material, which is applied in the field of rapid prototyping glass fiber reinforced polyethylene terephthalate flame retardant material and its preparation, and can solve the problems affecting the crystallization rate of PET, injection molding The problems of prolonged molding cycle and insufficient toughness can shorten the injection cycle, improve the crystallization and uniform distribution of mechanical stress.

Active Publication Date: 2013-06-26
SILVER AGE ENG PLASTICS DONGGUAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the fiber-reinforced PET composite material prepared by this method has good strength and high temperature resistance, it has the disadvantage of insufficient toughness.
In CN101280095A, toughening technologies such as grafting polyolefin / polyphenylene ether / elastomer with maleic anhydride / glycidyl methacrylate can greatly improve the toughness of glass fiber reinforced PET materials, but this type of toughening agent will seriously affect PET. The crystallization rate makes the injection molding processing cycle longer

Method used

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  • Flame retarding material of rapid prototyping glass fiber reinforced polyethylene glycol terephthalate and preparation method thereof
  • Flame retarding material of rapid prototyping glass fiber reinforced polyethylene glycol terephthalate and preparation method thereof
  • Flame retarding material of rapid prototyping glass fiber reinforced polyethylene glycol terephthalate and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] The rapid prototyping glass fiber reinforced PET flame retardant material of the present invention and its preparation method are as follows: firstly, PET is dried at 110°C for more than 3 hours, and then mixed with composite flame retardant, composite crystallization nucleating agent and other additives at high speed , and then fed into the twin-screw extruder by a precision metering feeder, and then the glass fiber reinforcing agent is fed into the extruder from the side of the precision metering feeder, plasticized, melted, and then extruded, drawn, cooled , drying, pelletizing and packaging the finished product. The formula of the rapid prototyping glass fiber reinforced PET flame retardant material used in Example 1 is shown in Table 1.

[0035]

[0036] In Example 1, the physical properties of the rapid prototyping glass fiber reinforced PET flame retardant material are shown in Table 2:

[0037]

Embodiment 2

[0039] The rapid prototyping glass fiber reinforced PET flame retardant material of the present invention and its preparation method are as follows: firstly, PET is dried at 110°C for more than 3 hours, and then mixed with composite flame retardant, composite crystallization nucleating agent and other additives at high speed , and then fed into the twin-screw extruder by a precision metering feeder, and then the glass fiber reinforcing agent is fed into the extruder from the precision metering feeder, plasticized, melted, and then extruded, drawn, cooled, and baked. Dried, pelletized and packaged finished product. See Table 3 for the formulation of the rapid prototyping glass fiber reinforced PET flame retardant material in Example 2.

[0040]

[0041] In Example 2, the physical properties of the rapid prototyping glass fiber reinforced PET flame retardant material are shown in Table 4:

[0042]

Embodiment 3

[0044] The rapid prototyping glass fiber reinforced PET flame retardant material of the present invention and its preparation method are as follows: firstly, PET is dried at 110°C for more than 3 hours, and then mixed with composite flame retardant, composite crystallization nucleating agent and other additives at high speed , and then fed into the twin-screw extruder by a precision metering feeder, and then the glass fiber reinforcing agent is fed into the extruder from the precision metering feeder, plasticized, melted, and then extruded, drawn, cooled, and baked. Dried, pelletized and packaged finished product. Example 3 The formula of the rapid prototyping glass fiber reinforced PET flame retardant material is shown in Table 5.

[0045]

[0046] The physical properties of the rapid prototyping glass fiber reinforced PET flame retardant material in Example 3 are shown in Table 6:

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Abstract

The invention belongs to macromolecule engineering plastic and the field of forming and processing thereof, and particularly relates to a flame retarding material of rapid prototyping glass fiber reinforced polyethylene glycol terephthalate and a preparation method thereof. The flame retarding material is prepared from PET (polyester) resin, composite crystallization nucleating agent, crystallization promoter, composite flame retardant, filling reinforcing agent and other processing assistants. The mass portions of all components are as follows: 40-80 portions of PET resin, 0.2-3 portions of composite crystallization reinforcing agent, 0.5-5 portions of crystallization promoter, 10-25 portions of composite flame retardant, 10-50 portions of filling reinforcing agent and 0.5-5 portions of other processing assistants. The rapid prototyping technology adopted and the rapid prototyping glass fiber reinforced PET flame retarding material prepared by the method solve the defects of PET usedas engineering plastic such as slow crystallization rate, high injection molding die temperature and long molding cycle during process of forming and processing. The flame retarding material can be widely applied to manufacture parts in terms of electronics and electrics, electric tools, energy saving lamps, family appliances, automibles and the like.

Description

technical field [0001] The invention belongs to the field of polymer engineering plastics and their molding processing. Specifically relates to a rapid prototyping glass fiber reinforced polyethylene terephthalate flame retardant material and a preparation method thereof. Background technique [0002] As we all know, PET engineering plastics have excellent mechanical properties, heat resistance, electrical insulation, and chemical resistance, and are cheaper than other engineering plastics. They have a wide application market and good development prospects. However, for a long time, due to the rigid molecular chain structure of PET itself and the high glass transition temperature, the crystallization rate is too slow and the crystallinity is very low in the actual production process. It limits its application and development in the engineering field. [0003] The improvement of crystallization rate and crystallinity is the key to improve the processing performance of PET. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08K13/06C08K7/14C08K5/03C08K3/24C08K7/20
Inventor 傅轶李小辉谭颂斌
Owner SILVER AGE ENG PLASTICS DONGGUAN