Interface modification method of poly(p-phenylene-benzobisoxazole) fiber-reinforced soluble polyaryl ether resin composite material

A technology of benzobisoxazole and polyparaphenylene, which is applied in the direction of fiber type, fiber treatment, textile and paper making, etc., can solve the problem that the mechanical properties of PBO fiber reinforced PPESK resin matrix composites are difficult to exert well, and the composite materials are comprehensive. performance limitations, poor interfacial adhesion, etc., to achieve the effects of excellent interfacial adhesion and mechanical properties, good comprehensive properties, and improved interfacial adhesion strength

Inactive Publication Date: 2009-06-03
DALIAN UNIV OF TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] We prepared PBO fiber-reinforced PPESK resin-based composites by solution impregnation and compression molding, and tested the interlaminar shear strength of the composites. The results showed that the interfacial bonding between PBO fibers and PPESK resin matrix was very poor. As a result, the main mechanical properties of PBO fiber reinforced PPESK resin matrix composites are difficult to play well, and the comprehensive performance of composites is also limited.

Method used

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  • Interface modification method of poly(p-phenylene-benzobisoxazole) fiber-reinforced soluble polyaryl ether resin composite material
  • Interface modification method of poly(p-phenylene-benzobisoxazole) fiber-reinforced soluble polyaryl ether resin composite material

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Experimental program
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Effect test

Embodiment 1

[0030] Wrap the poly-p-phenylenebenzobisoxazole (PBO) fiber evenly on the glass frame, place it in the central area of ​​the processing chamber of the plasma device, turn on the vacuum pump to evacuate the vacuum in the processing chamber to below 1Pa, adjust the gas The mass flow controller at the entrance feeds oxygen with a flow rate of 25 sccm to keep the air pressure at 30Pa, and treat it for 15 minutes under the condition of plasma discharge power of 100W, and quickly take out the fiber and put it into a plastic or glass container containing a graft solution Among them, the graft solution is an epoxy resin / acetone solution with a mass percentage of 3%. After soaking for 12 hours, the fiber is taken out and placed in an oven to dry the solvent, and the dried fiber is placed in the plasma device again. In the central area of ​​the processing chamber, turn on the vacuum pump to evacuate the vacuum in the processing chamber to below 1Pa, adjust the mass flow controller of the...

Embodiment 2

[0033] Wrap the poly-p-phenylenebenzobisoxazole (PBO) fiber evenly on the glass frame, place it in the central area of ​​the processing chamber of the plasma device, turn on the vacuum pump to evacuate the vacuum in the processing chamber to below 1Pa, adjust the gas The mass flow controller at the entrance feeds oxygen with a flow rate of 1-200sccm to keep the air pressure at 1Pa, and treat it for 0.5 minutes under the condition of plasma discharge power of 10W, and quickly take out the fiber and put it into the plastic or plastic containing the graft solution. In the glass container, the graft solution is an epoxy resin solution with a mass percentage of 1%. After soaking for 0.5 hours, the fiber is taken out and put into an oven to dry the solvent. Polyarylether sulfone ketone (PPESK) resin is compounded to make PBO fiber reinforced PPESK resin-based composite material.

Embodiment 3

[0035] Wrap the poly-p-phenylenebenzobisoxazole (PBO) fiber evenly on the glass frame, place it in the central area of ​​the processing chamber of the plasma device, turn on the vacuum pump to evacuate the vacuum in the processing chamber to below 1Pa, adjust the gas The mass flow controller at the inlet feeds air with a flow rate of 1 to 200 sccm to keep the air pressure at 1.01×10 5 Pa, under the condition of plasma discharge power of 400W for 30 minutes, take out the fiber quickly and put it into a plastic or glass container with a graft solution. The graft solution is 50% by mass of unsaturated poly Ester resin solution, after soaking for 24 hours, take out the fiber and put it in an oven to dry the solvent, then take out the fiber and immediately compound it with polyaryl ether sulfone (PPES) resin containing phthalazinyl biphenyl structure to make PBO fiber reinforced PPES resin base composite material.

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Abstract

The invention discloses an interface modification method of a poly(p-phenylene-benzobisoxazole) fiber-reinforced soluble polyaryl ether resin composite material, and the interface modification method belongs to the technical field of advanced composite materials. The interface modification method is characterized in that the interface modification method adopts the low-temperature plasma technology to graft epoxy resin and other thermosetting resins on an interface of poly(p-phenylene-benzobisoxazole) fiber and a soluble polyaryl ether resin matrix under the processing power of 10-400W, the processing time of 0.5-30min and the gas pressure of 1-1.01 multiplied by 10<5> Pa in a processing cavity, the content of the epoxy resin and other thermosetting resins by weight percentage is 1-50 percent, and the grafting time is 0.5-24 hours. The interface modification method has the advantages that the prepared composite material has excellent interface binding performance and mechanical performance and can better play the comprehensive performance of the composite material, meet the using requirements of high temperature resistant environments of aerospace, military and other fields and realize batch, continuous and large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of advanced composite materials, and relates to low-temperature plasma technology grafting epoxy resin and other thermosetting resins to improve the interfacial adhesion of polyparaphenylenebenzobisoxazole (PBO) fiber-reinforced soluble polyarylether resin-based composite materials Methods. Background technique [0002] As a reinforcing material for advanced polymer matrix composites, poly(p-phenylenebenzobisoxazole) (PBO) fibers are considered to be the The superfibers of the 21st century. PBO fiber is a lyotropic liquid crystal heterocyclic polymer. It is a new generation of ultra-high performance fiber after Kevlar fiber, and it is also the organic fiber with the best comprehensive performance at present. PBO fiber has excellent mechanical properties and high temperature resistance, its tensile strength is 5.8GPa, its tensile modulus is as high as 280-380GPa, and its density is only 1.56g / cm 3 ;PBO fib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/06C08L71/08D06M10/00D06M15/55D06M15/51D06M15/564D06M15/37D06M15/59D06M101/30
Inventor 陈平张承双张相一孙宝磊
Owner DALIAN UNIV OF TECH
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