CN105419326A - Coupling agent treated glass fiber reinforced polyimide composite material - Google Patents
Coupling agent treated glass fiber reinforced polyimide composite material Download PDFInfo
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- CN105419326A CN105419326A CN201410481809.0A CN201410481809A CN105419326A CN 105419326 A CN105419326 A CN 105419326A CN 201410481809 A CN201410481809 A CN 201410481809A CN 105419326 A CN105419326 A CN 105419326A
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- coupling agent
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Abstract
The present invention relates to a preparation method for a coupling agent treated glass fiber reinforced polyimide composite material. The preparation method comprises: treating short cut fiber by using an organosilane coupling agent to enhance the surface activity; and blending the mixture with thermoplastic polyimide by using a melt extrusion process to prepare a polyimide composite material with high glass fiber utilization.
Description
Technical field
The invention belongs to polyimide special engineering plastics technical field, relate to a kind of coupling agent treatment fiberglass reinforced composite polyimide material.
Background technology
Polyimide (PI) is that one has high-modulus, high strength, low water absorption, hydrolysis, resistance to linchpin are penetrated, the engineering plastics of superior insulation and resistance to thermo-oxidative stability, have been widely used in the fields such as Aeronautics and Astronautics, microelectronics, nanometer, liquid crystal, separatory membrane, laser.Recently, one of in 21 century most promising engineering plastics are all being listed the research of polyimide, development and utilization by each state.But pure PI is because of lower tension, ultimate compression strength, is not suitable for using as friction materials separately, and the PI matrix material of mechanical property and frictional behaviour excellence after adding fortifying fibre, can be obtained.At present, modified polyimide mainly contains the methods such as composition, structure of modification, copolymerization, blended, filling, wherein filling-modified is a kind of simple effective method, not only can keep its advantage but also complex effect can be utilized to improve and overcome the defect of pure PI thus improve its over-all properties.In PI, add different fillers, its physical strength, hardness and wear resistance can be significantly improved.Conventional filler mainly contains mineral filler, metal and metal oxide, nanoparticle, hydridization filler etc.
Fiber has high strength, high-modulus, the advantage such as high temperature resistant, can increase the mechanical property of PI, improve its dimensional stability, intensity, toughness and thermotolerance etc.Fiber at present for enhancing by polymer modification mainly contains carbon fiber, glass fibre, aramid fiber and various whisker.But undressed fiber surface presents inertia, its specific activity area is little, and surface energy is low, and poor with the interface cohesion of resin, reinforced effects is limited, even can cause the self-defect of matrix material.Therefore, need to carry out surface modification to fiber, to improve the Interface adhesive strength of fiber reinforcement PI matrix material, thus obtain the PI matrix material of mechanical property excellence.
Summary of the invention
The object of the invention is the preparation method providing a kind of coupling agent treatment fiberglass reinforced composite polyimide material, utilize organo silane coupling agent process chopped glass fiber, strengthen surfactivity, employing melt extrudes technique and thermoplastic polyimide is blended, prepares the composite polyimide material of glass high utilization rate.
The present invention relates to a kind of preparation method of coupling agent treatment fiberglass reinforced composite polyimide material, it comprises the following steps:
1. the surface treatment process of glass: glass first dries 2h at 120 DEG C, is joined by glass in high speed agitator, gets the solution that then a certain amount of organo silane coupling agent is made into 2%, be added drop-wise in glass, high-speed stirring 2 ~ 3min; Then 120 DEG C of oven dry 2h inside baking oven are placed on, obtained surface-treated glass.
2. matrix material preparation: by the glass of organo silane coupling agent process and polyimide through high-speed stirring 2 ~ 3min, extrude through twin screw extruder, each process section temperature is 375 DEG C, 375 DEG C, 380 DEG C, 380 DEG C, 385 DEG C, 385 DEG C, 385 DEG C, 390 DEG C, 390 DEG C, 390 DEG C.By the material strip extruded through travelling belt transmission, air cooling, pelletizing and the composite polyimide material obtaining glass high utilization rate of the present invention.
As no specific instructions, various raw material of the present invention all can be obtained by commercially available, or prepares according to the ordinary method of this area.Unless otherwise defined or described herein, all specialties used herein and scientific words and those skilled in the art the same meaning be familiar with.In addition any method similar or impartial to described content and material all can be applicable in this illustration method.
[embodiment] further illustrates the present invention below by example, and these embodiments are only not used in for illustration of the present invention and limit the scope of the invention.The experimental technique of unreceipted actual conditions in embodiment below, usually conveniently condition, or carry out according to the condition that manufacturer advises.Unless otherwise indicated, otherwise all numbers are weight part, and all per-cent is weight percentage, and described polymericular weight is number-average molecular weight.
The surface treatment process of glass: glass first dries 2h at 120 DEG C, is joined by glass in high speed agitator, gets the solution that then a certain amount of coupling agent KH550 is made into 2%, be added drop-wise in glass, high-speed stirring 2 ~ 3min; Then 120 DEG C of oven dry 2h inside baking oven are placed on, obtained surface-treated glass.Prepared by matrix material: glass coupling agent treatment crossed mixes (formula is in table 1) by required formula rate with polyimide, through high-speed stirring 2 ~ 3min, extrude through twin screw extruder, each process section temperature is 375 DEG C, 375 DEG C, 380 DEG C, 380 DEG C, 385 DEG C, 385 DEG C, 385 DEG C, 390 DEG C, 390 DEG C, 390 DEG C.By the material strip extruded through travelling belt transmission, air cooling, pelletizing and the composite polyimide material obtaining glass high utilization rate of the present invention.Adopt testing standard: tensile strength presses GB/T1040-1992, and flexural strength presses GB/T1042-1992, and impact property (non-notch standard pilot plant sample) is undertaken by GB/T1043-1993, and KH550 coupling agent treatment TPI/GF composite materials property is in table 2.
Table 1 different ingredients component concentration
| 1# | 2# | 3# | 4# | 5# | 6# | |
| PI | 80 | 80 | 80 | 80 | 80 | 80 |
| GF | 20 | 20 | 20 | 20 | 20 | 20 |
| KH550 | 0 | 0.04 | 0.08 | 0.12 | 0.16 | 0.20 |
Table 2 coupling agent KH550 process TPI/GF composite materials property
| 1# | 2# | 3# | 4# | 5# | 6# | |
| Tensile strength/MPa | 84.4 | 105.2 | 110.8 | 112.1 | 112.8 | 113.2 |
| Young's modulus/GPa | 2.70 | 3.36 | 3.30 | 3.18 | 3.13 | 3.10 |
| Flexural strength/MPa | 143.2 | 172.1 | 198.3 | 202.1 | 200.2 | 198.7 |
| Shock strength kJm -2 | 20.4 | 30.5 | 30.8 | 30.1 | 29.1 | 27.8 |
Best with the composite materials property that KH550 process 20% glass obtains, when its consumption is 0.4% of GF quality, tensile strength improves 31.3%, and Young's modulus improves 22.2%, and flexural strength improves 38.5%, and shock strength improves 51.0%
Below be only embody rule example of the present invention, protection scope of the present invention is not constituted any limitation.The technical scheme that all employings convert on an equal basis or equivalence is replaced and formed, all drops within scope.
Claims (4)
1. the preparation method of a coupling agent treatment fiberglass reinforced composite polyimide material, utilize organo silane coupling agent process chopped glass fiber, strengthen surfactivity, employing melt extrudes technique and thermoplastic polyimide is blended, prepares the composite polyimide material of glass high utilization rate.
2. a kind of coupling agent treatment fiberglass reinforced composite polyimide material according to claim 1, it is characterized in that, selected glass diameter is 7 ~ 10 μm, and length is about 100 μm.
3. a kind of coupling agent treatment fiberglass reinforced composite polyimide material according to claim 1, is characterized in that, the coupling agent of selected process chopped glass fiber is organosilicon alkanes.
4. a kind of coupling agent treatment fiberglass reinforced composite polyimide material according to claim 1, it comprises step below:
(1) surface treatment process of glass: glass first dries 2h at 120 DEG C, is joined by glass in high speed agitator, gets the solution that then a certain amount of organo silane coupling agent is made into 2%, be added drop-wise in glass, high-speed stirring 2 ~ 3min; Then 120 DEG C of oven dry 2h inside baking oven are placed on, obtained surface-treated glass;
(2) matrix material preparation: by the glass of organo silane coupling agent process and polyimide through high-speed stirring 2 ~ 3min, extrude through twin screw extruder, each process section temperature is 375 DEG C, 375 DEG C, 380 DEG C, 380 DEG C, 385 DEG C, 385 DEG C, 385 DEG C, 390 DEG C, 390 DEG C, 390 DEG C, by the material strip extruded through travelling belt transmission, air cooling, pelletizing and the composite polyimide material obtaining glass high utilization rate of the present invention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410481809.0A CN105419326A (en) | 2014-09-20 | 2014-09-20 | Coupling agent treated glass fiber reinforced polyimide composite material |
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| CN201410481809.0A CN105419326A (en) | 2014-09-20 | 2014-09-20 | Coupling agent treated glass fiber reinforced polyimide composite material |
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| CN105419326A true CN105419326A (en) | 2016-03-23 |
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| CN201410481809.0A Pending CN105419326A (en) | 2014-09-20 | 2014-09-20 | Coupling agent treated glass fiber reinforced polyimide composite material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109749443A (en) * | 2019-01-12 | 2019-05-14 | 周吕鑫 | Glass-reinforced plastic material and preparation method thereof for making printed wiring board |
| CN110452496A (en) * | 2019-09-04 | 2019-11-15 | 国电联合动力技术有限公司 | A kind of modified glass-fiber reinforced resin laminate and preparation method thereof |
| CN113929315A (en) * | 2021-11-09 | 2022-01-14 | 华东师范大学重庆研究院 | Method for inducing graphene coating layer on surface of glass fiber by laser ablation |
-
2014
- 2014-09-20 CN CN201410481809.0A patent/CN105419326A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 王晓东 等: "偶联剂处理玻纤改性热塑性聚酰亚胺", 《塑料工业》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109749443A (en) * | 2019-01-12 | 2019-05-14 | 周吕鑫 | Glass-reinforced plastic material and preparation method thereof for making printed wiring board |
| CN110452496A (en) * | 2019-09-04 | 2019-11-15 | 国电联合动力技术有限公司 | A kind of modified glass-fiber reinforced resin laminate and preparation method thereof |
| CN113929315A (en) * | 2021-11-09 | 2022-01-14 | 华东师范大学重庆研究院 | Method for inducing graphene coating layer on surface of glass fiber by laser ablation |
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Application publication date: 20160323 |
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