CN104629364A - Aramid fiber/polyimide composite material and preparation method thereof - Google Patents

Aramid fiber/polyimide composite material and preparation method thereof Download PDF

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Publication number
CN104629364A
CN104629364A CN201310559294.7A CN201310559294A CN104629364A CN 104629364 A CN104629364 A CN 104629364A CN 201310559294 A CN201310559294 A CN 201310559294A CN 104629364 A CN104629364 A CN 104629364A
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CN
China
Prior art keywords
aramid fiber
polyimide
composite material
reaction
pyromellitic dianhydride
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201310559294.7A
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Chinese (zh)
Inventor
穆兴文
宫克难
宋阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heilongjiang Xinda Enterprise Group Co Ltd
Original Assignee
Heilongjiang Xinda Enterprise Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Heilongjiang Xinda Enterprise Group Co Ltd filed Critical Heilongjiang Xinda Enterprise Group Co Ltd
Priority to CN201310559294.7A priority Critical patent/CN104629364A/en
Publication of CN104629364A publication Critical patent/CN104629364A/en
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
    • C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
    • C08L79/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
    • C08L77/10—Polyamides derived from aromatically bound amino and carboxyl groups of amino-carboxylic acids or of polyamines and polycarboxylic acids
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
    • D06M10/04—Physical treatment combined with treatment with chemical compounds or elements
    • D06M10/08—Organic compounds
    • D06M10/10—Macromolecular compounds

Abstract

The invention discloses an aramid fiber/polyimide composite material and a preparation method thereof. The method comprises the following steps: uniformly mixing aramid fiber with pyromellitic dianhydride, placing the obtained mixture in a self-made microwave device, carrying out a grafting reaction, and radiating under a microwave radiation frequency of 0.5-5GHz and a radiation dose of 0.1-2mW/cm<2> for 1-240s; carrying out a pre-polycondensation reaction on aramid fiber grafted pyromellitic dianhydride and ethene diamine at 50-70DEG C to generate a aramid fiber/polyimide prepolymer; and carrying out melt blending on the prepolymer and polyimide through a double screw extruder to prepare the aramid fiber/polyimide composite material. The composite material has excellent transverse tensile strength, and can be used in the aviation and aerospace field.

Description

A kind of composite aramid fiber/polyimide material and preparation method thereof
Technical field
The present invention relates to polymeric material field, be specifically related to a kind of composite aramid fiber/polyimide material and preparation method thereof.
Background technology
Polyimide has the advantages such as rigidity is large, fusing point is high, good heat resistance, can more than 300 DEG C life-time service, it is material modified is applied to aerospace, military equipment and electronic industry more.
Aramid fiber full name aromatic polyamide fibre, it has, and specific tenacity is high, specific modulus is high, density is little, high temperature resistant, toughness is high and the advantage such as high abrasion.But aramid fiber degree of crystallinity is high and height-oriented, causes its smooth surface, lack chemical active radical, poor with the surface wettability of polyimide matrix.
Microwave radiation graft modification is a kind of novel modification technology in recent years, and this technology has that treatment dosage is controlled, the treatment time is short, processing efficiency advantages of higher.Microwave radiation under suitable condition, can make the epidermis of aramid fiber and sandwich layer directly be cross-linked, and under the prerequisite of not falling low-fiber endwise tensile strength, improves transverse tensile strength and the surfactivity of fiber.
Summary of the invention
For above situation, the invention provides a kind of composite aramid fiber/polyimide material and preparation method thereof.Aramid fiber is first through microwave radiation grafting pyromellitic dianhydride, then carry out prepolymerization reaction with quadrol and generate aramid fiber/polyimide preformed polymer, prepolymer and polyimide obtain composite aramid fiber/polyimide material by twin screw extruder melt blending.
In order to realize above object, technical solution of the present invention is as follows:
1, be 0.5 ~ 5GHz in irradiated with microwave radiation frequency, radiation dose is 0.1 ~ 2mW/cm 2, radiated time is under 1 ~ 240s condition, is grafted on aramid fiber by pyromellitic dianhydride.
2, with dimethyl formamide and dimethyl sulfoxide (DMSO) for reaction solvent, temperature of reaction is 50 ~ 70 DEG C, aramid fiber grafting pyromellitic dianhydride and quadrol is carried out prepolymerization reaction and generates aramid fiber/polyimide preformed polymer.
3, prepolymer and polyimide obtain composite aramid fiber/polyimide material by twin screw extruder melt blending.
The invention has the beneficial effects as follows: composite aramid fiber/polyimide material disclosed in this invention and preparation method thereof, improve the surfactivity of aramid fiber, improve the interface compatibility of aramid fiber and polyimide, the horizontal tensile property of obtained composite aramid fiber/polyimide material is excellent.
specific implementation method:
Embodiment one
Aramid fiber and pyromellitic dianhydride mixing are placed in self-control microwave equipment and carry out graft reaction, irradiated with microwave radiation frequency is 0.5GHz, and radiation dose is 0.1mW/cm 2, radiated time is 1s.With dimethyl formamide and dimethyl sulfoxide (DMSO) for reaction solvent, temperature of reaction is 50 DEG C, aramid fiber grafting pyromellitic dianhydride and quadrol is carried out prepolymerization reaction and generates aramid fiber/polyimide preformed polymer.Prepolymer and polyimide obtain composite aramid fiber/polyimide material by twin screw extruder melt blending.
Embodiment two
Aramid fiber and pyromellitic dianhydride mixing are placed in self-control microwave equipment and carry out graft reaction, irradiated with microwave radiation frequency is 2.5GHz, and radiation dose is 1mW/cm 2, radiated time is 120s.With dimethyl formamide and dimethyl sulfoxide (DMSO) for reaction solvent, temperature of reaction is 60 DEG C, aramid fiber grafting pyromellitic dianhydride and quadrol is carried out prepolymerization reaction and generates aramid fiber/polyimide preformed polymer.Prepolymer and polyimide obtain composite aramid fiber/polyimide material by twin screw extruder melt blending.
Embodiment three
Aramid fiber and pyromellitic dianhydride mixing are placed in self-control microwave equipment and carry out graft reaction, irradiated with microwave radiation frequency is 5GHz, and radiation dose is 2mW/cm 2, radiated time is 240s.With dimethyl formamide and dimethyl sulfoxide (DMSO) for reaction solvent, temperature of reaction is 70 DEG C, aramid fiber grafting pyromellitic dianhydride and quadrol is carried out prepolymerization reaction and generates aramid fiber/polyimide preformed polymer.Prepolymer and polyimide obtain composite aramid fiber/polyimide material by twin screw extruder melt blending.
The performance of each embodiment is in table 1, and reference example is that the aramid fiber of chemical method modification strengthens composite polyimide material performance.
Table 1:
Performance Embodiment one Embodiment two Embodiment three Reference example
Simply supported beam unnotched impact strength (KJ/m 2） 35.2 37.4 34.8 28.5
Simply supported beam notched Izod impact strength (KJ/m 2） 3.5 4.1 3.2 2.5
Tensile strength (MPa) 125 123 128 120
Elongation at break (%) 3.0 3.2 2.9 3.0
Flexural strength (MPa) 194 190 197 180
Modulus in flexure (MPa) 3500 3650 3460 3000

Claims (2)

1. a composite aramid fiber/polyimide material, it is characterized in that: aramid fiber is first through microwave radiation grafting pyromellitic dianhydride, then carry out prepolymerization reaction with quadrol and generate aramid fiber/polyimide preformed polymer, prepolymer and polyimide obtain composite aramid fiber/polyimide material through twin screw extruder melt blending.
2. according to composite aramid fiber/polyimide material described in claim 1, it is characterized in that: the reaction solvent of prepolymerization reaction is dimethyl formamide and dimethyl sulfoxide (DMSO), and temperature of reaction is 50 ~ 70 DEG C.
CN201310559294.7A 2013-11-12 2013-11-12 Aramid fiber/polyimide composite material and preparation method thereof Pending CN104629364A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310559294.7A CN104629364A (en) 2013-11-12 2013-11-12 Aramid fiber/polyimide composite material and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310559294.7A CN104629364A (en) 2013-11-12 2013-11-12 Aramid fiber/polyimide composite material and preparation method thereof

Publications (1)

Publication Number Publication Date
CN104629364A true CN104629364A (en) 2015-05-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310559294.7A Pending CN104629364A (en) 2013-11-12 2013-11-12 Aramid fiber/polyimide composite material and preparation method thereof

Country Status (1)

Country Link
CN (1) CN104629364A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107313242A (en) * 2017-07-27 2017-11-03 贵州大学 The application of the method for aramid fiber surface modification and products thereof
CN111916626A (en) * 2020-07-10 2020-11-10 东莞东阳光科研发有限公司 Cross-linked polyimide/aramid fiber composite diaphragm and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6514449B1 (en) * 2000-09-22 2003-02-04 Ut-Battelle, Llc Microwave and plasma-assisted modification of composite fiber surface topography
CN1487020A (en) * 2003-07-17 2004-04-07 上海交通大学 Composite aramid fiber/polyimide material and its prepn
CN101538398A (en) * 2009-04-09 2009-09-23 上海第二工业大学 Preparation method of aramid fiber/epoxy resin composite material
CN102604092A (en) * 2012-02-20 2012-07-25 中国科学院化学研究所 Polyimide resin as well as preparation method and application thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6514449B1 (en) * 2000-09-22 2003-02-04 Ut-Battelle, Llc Microwave and plasma-assisted modification of composite fiber surface topography
CN1487020A (en) * 2003-07-17 2004-04-07 上海交通大学 Composite aramid fiber/polyimide material and its prepn
CN101538398A (en) * 2009-04-09 2009-09-23 上海第二工业大学 Preparation method of aramid fiber/epoxy resin composite material
CN102604092A (en) * 2012-02-20 2012-07-25 中国科学院化学研究所 Polyimide resin as well as preparation method and application thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
J. LI & C. L. CAI: "The Friction and Wear Properties of ECP Surface-Treated Kevlar Fiber-Reinforced Thermoplastic Polymide Composites", 《POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107313242A (en) * 2017-07-27 2017-11-03 贵州大学 The application of the method for aramid fiber surface modification and products thereof
CN111916626A (en) * 2020-07-10 2020-11-10 东莞东阳光科研发有限公司 Cross-linked polyimide/aramid fiber composite diaphragm and preparation method thereof
CN111916626B (en) * 2020-07-10 2023-04-28 东莞东阳光科研发有限公司 Cross-linked polyimide/aramid composite diaphragm and preparation method thereof

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Application publication date: 20150520