Preparation method for poly-p-phenylene benzobisoxazole fiber reinforced resin matrix composite material

A technology of fiber-reinforced resin and benzobisoxazole, which is applied in the field of preparation of poly-p-phenylenebenzobisoxazole fiber-reinforced resin-based composite materials, and can solve the problem that fiber surface modification methods are not easy for large-scale industrial production, PBO Problems such as poor interface properties between layers of fiber-reinforced resin-based composite materials, etc., to achieve the effects of easy operation, improved wetting effect, and various types

Inactive Publication Date: 2017-12-15
BEIHANG UNIV
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Problems solved by technology

In view of the excellent comprehensive performance of PBO fiber, but the poor interlayer interface performance of PBO fiber-reinforced resin-based composite materials, and the current situation that the fiber surface modification method is not easy for large-scale industrial production, the composite material molding process suitable for industrial production is improved and optimized. Improving the interface properties of PBO fiber composites has important practical significance

Method used

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  • Preparation method for poly-p-phenylene benzobisoxazole fiber reinforced resin matrix composite material
  • Preparation method for poly-p-phenylene benzobisoxazole fiber reinforced resin matrix composite material
  • Preparation method for poly-p-phenylene benzobisoxazole fiber reinforced resin matrix composite material

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specific Embodiment 1

[0032] (1) Material preparation: 100 parts of epoxy resin, and 13 parts by weight of modified imidazole curing agent. In parts by weight, 2% of the total weight of the KH560 silane coupling agent was weighed, and stirred evenly at a temperature of 10° C. to 30° C. The resin system used in the wet winding molding process is obtained, which is left to stand for use.

[0033](2) Device preparation: PBO fiber is placed on the creel. According to the distribution of the rollers of the winding equipment, the PBO fibers are wound between the rollers in sequence, and the attached Figure 3-1 Way dipping. Select the steel mandrel as the lining, and install the mold on the winding machine for use. Build an ultrasonic device, firmly connect the ultrasonic cluster probe and the ultrasonic vibration generator, fix the ultrasonic cluster probe, place the probe after fiber dipping, and make the probe contact with the fiber. The glue solution prepared in step (1) is placed in a dipping tan...

specific Embodiment 2

[0037] (1) Material preparation: Bismaleimide resin is used as the resin system for preparing prepregs in wet winding process.

[0038] (2) Device preparation: PBO fiber is placed on the creel. According to the distribution of the rollers of the winding equipment, the PBO fibers are wound between the rollers in sequence, and the attached Figure 3-2 Way dipping. A metal circular cylinder with a diameter of 1m is selected as the mandrel for preparing the prepreg, and the surface of the mandrel is pasted with release paper. Build an ultrasonic device, firmly connect the ultrasonic cluster probe and the ultrasonic vibration generator, fix the ultrasonic cluster probe, and place the probe in the fiber dipping tank with a distance of about 2 mm between the probe and the fiber. The glue solution prepared in step (1) is placed in a dipping tank. Adjust the parameters of the ultrasonic vibration generator, set the ultrasonic power at 450W, the ultrasonic frequency at 40kHz, and con...

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Abstract

The invention discloses a preparation method for a poly-p-phenylene benzobisoxazole (PBO for short) fiber reinforced resin matrix composite material. According to the method, the PBO fiber reinforced resin matrix composite material is prepared by adopting a wet-process winding forming technology, and an online ultrasonic treatment device is introduced in the preparation process; the device is simple to install, easy to disassemble, convenient to operate, capable of performing production continuously and high in production efficiency; and the parameters and the installation position of the online ultrasonic treatment device can be adjusted, and therefore the improvement of the fiber infiltration quality of resin can be realized. The method can be used for preparing wet-process winding formed composite products, such as pressure vessels and pipelines and can also be used for preparing prepregs serving as intermediate materials of hot-press formed composite products. Compared with a composite material prepared by a traditional method, the PBO fiber composite material prepared by the method has the advantages that the defects are few, the interface bonding performance is high, and particularly the interlaminar shear strength can be obviously improved, and therefore the problem that the interlaminar performance of the PBO fiber reinforced composite material layer is poor can be solved, and the use performance and application benefits of the PBO fiber reinforced composite material can be effectively improved.

Description

technical field [0001] The invention relates to a preparation method of poly-p-phenylene benzobisoxazole (Poly-p-phenylene benzobisoxazole, PBO) fiber-reinforced resin-based composite material, in particular to a wet winding molding method including an online ultrasonic treatment device A preparation method of PBO fiber reinforced resin matrix composite material. Background technique [0002] With the continuous development of science and technology, aerospace and other defense technology fields have put forward higher requirements for fiber composite materials. Polyparaphenylene benzobisoxazole fiber, which has developed rapidly in recent years, is considered to be a super fiber in the 21st century because of its special advantages in specific strength, specific modulus, heat resistance and flame retardancy, especially in the field of national defense There are important application prospects. The highly conjugated rigid rod-like structure of PBO fiber determines its exce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/32B29C70/54
CPCB29C70/32B29C70/54
Inventor 王倩顾轶卓杨中甲王绍凯李敏张佐光
Owner BEIHANG UNIV
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