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Fiber-reinforced polyethylene glycol terephthalate composite material and preparation method thereof

A polyethylene terephthalate and composite material technology, which is applied in the field of fiber-reinforced polymer composite materials, can solve the problems of not obtaining performance composite materials, not improving basalt fiber-PET inorganic-organic phase interface, gap, etc. , to achieve the effects of excellent stability, simple molding process and broad application prospects

Inactive Publication Date: 2009-09-02
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In 2006, F.Ronkay and T.Czigány compared glass fiber-reinforced PET and basalt fiber-reinforced PET (Polym.Adv.Technol.2006, 17:830-834), but because they did not improve the basalt fiber-PET inorganic-organic phase interface, therefore, composites with significantly better performance than glass fiber reinforced PET are not obtained
2008, Milan prepared basalt fiber-reinforced PET composites (Polym.Compos.2008, 29:437-442), and improved the interface. The mechanical properties of the obtained material were significantly improved compared with those of F.Ronkay, but they were the same as those on the market. Compared with the high-performance glass fiber reinforced PET on the market, there is still a significant gap

Method used

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  • Fiber-reinforced polyethylene glycol terephthalate composite material and preparation method thereof
  • Fiber-reinforced polyethylene glycol terephthalate composite material and preparation method thereof
  • Fiber-reinforced polyethylene glycol terephthalate composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] First dry 850g of PET and 150g of continuous long basalt fiber, then mix PET, 10g of TAIC, 10g of boron nitride and 10g of 3,5-di-tert-butyl-4-hydroxybenzyl diethyl phosphate, and add it to bis In the screw extruder, during the melt extrusion process, basalt fiber bundles are introduced from the fiber feeding port, the extrusion temperature is 275°C, the head temperature is 260°C, the extruded material is cooled and then pelletized to obtain the masterbatch; After the masterbatch is dried to a moisture content of less than 1.5‰, in N 2 Irradiate with Co-60 source under protection, the dose is 10kGy, 30kGy, 70kGy, 120kGy. Its mechanical properties are shown in Table 1:

[0035] Table 1: Changes in mechanical properties of reinforced PET after irradiation

[0036]

[0037]

Embodiment 2

[0039] First dry 800g of PET and 200g of continuous long basalt fibers as raw materials, then dry PET, 20g of PETA, 10g of boron nitride and 20g of n-octadecyl propionate Mix evenly and add to the twin-screw extruder. During the melt extrusion process, introduce basalt fiber bundles from the fiber feeding port. The extrusion temperature is 260°C, and the head temperature is 260°C. The extruded materials are cooled and then cut. Granules to obtain the masterbatch; after the masterbatch is dried to a moisture content of less than 1.5‰, the 2 Irradiate with Co-60 source under protection, the dose is 10kGy, 30kGy, 70kGy, 120kGy. Its mechanical properties are shown in Table 2:

[0040] Table 2: Changes in mechanical properties of reinforced PET after irradiation

[0041]

Embodiment 3

[0043]First, dry raw material 700g PET and 300g continuous long glass fiber, then mix PET, 15g TMPTA, 10g boron nitride and 30g triphenyl phosphite evenly, add to twin-screw extruder, during the melt extrusion process, Introduce glass fiber bundles from the fiber feeding port, extrusion temperature is 240°C, head temperature is 260°C, the extruded material is cooled and then pelletized to obtain the masterbatch; after the masterbatch is dried to a moisture content of less than 1.5‰, the 2 Irradiate with Co-60 source under protection, the dose is 10kGy, 30kGy, 70kGy, 120kGy. Its mechanical properties are shown in Table 3:

[0044] Table 3: Changes in mechanical properties of reinforced PET after irradiation

[0045]

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Abstract

The invention relates to a fiber-reinforced polyethylene glycol terephthalate composite material and a preparation method thereof. The composite material is prepared from the following raw materials: 65 to 85 weight parts of PET, 15 to 35 weight parts of fiber, 1 to 10 weight parts of vinyl-group multifunctional-group monomer and 2 to 10 weight parts of composite auxiliary. The raw materials PET and fiber are dried, and the PET, the vinyl-group multifunctional-group monomer and the composite auxiliary are uniformly mixed to be added into a material cooling cut granules extruded out by a double-screw extruder, the granules are dried, under the protection of N2, a Co-60 source or an electronic beam is used for irradiation, and the irradiation dosage is from 10 to 120kGy to obtain the fiber-reinforced high-performance PET composite material. The dynamic performance of the material is higher than that of the glass-fiber-reinforced product, wherein the tensioning strength is 156MPa, the breaking elongation rate is 3.8 percent, the bent strength is 236MPa, the bent modulus is 11.6GPa, and the impact strength of a Izod gap is 9.1kJ / m<2>.

Description

technical field [0001] The invention relates to the field of fiber-reinforced polymer composite materials, in particular to a fiber-reinforced polyethylene terephthalate composite material and a preparation method thereof. Background technique [0002] Polyethylene terephthalate (PET) is cheap, has good rigidity, heat resistance, chemical resistance, excellent dimensional stability, and at room temperature, the tensile strength exceeds 55MPa. These advantages make PET a A development hotspot in the field of engineering materials. In order to further improve the mechanical properties and high temperature resistance of PET to meet higher requirements and a wider range of applications, experts at home and abroad have done a lot of PET modification work. [0003] The study of fiber-reinforced modification of PET has been reported many times at home and abroad. This method can not only greatly improve the tensile properties, bending properties and high temperature resistance of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/02C08K7/14C08K7/06C08K7/10C08K7/08C08K7/04B29C47/92B29C48/40B29C48/92
CPCB29C48/92B29C2948/92704B29C48/04B29C48/40B29C2948/92895
Inventor 柳美华邓鹏飏尹园
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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