CN109774193A - A kind of composite element versatility packaging method being easily achieved knockout course - Google Patents

A kind of composite element versatility packaging method being easily achieved knockout course Download PDF

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Publication number
CN109774193A
CN109774193A CN201910211277.1A CN201910211277A CN109774193A CN 109774193 A CN109774193 A CN 109774193A CN 201910211277 A CN201910211277 A CN 201910211277A CN 109774193 A CN109774193 A CN 109774193A
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CN
China
Prior art keywords
tooling
composite
release film
film
porous
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Pending
Application number
CN201910211277.1A
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Chinese (zh)
Inventor
王乾
贾彩霞
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Shenyang Aerospace University
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Shenyang Aerospace University
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Publication date
Application filed by Shenyang Aerospace University filed Critical Shenyang Aerospace University
Priority to CN201910211277.1A priority Critical patent/CN109774193A/en
Publication of CN109774193A publication Critical patent/CN109774193A/en
Pending legal-status Critical Current

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Abstract

A kind of composite element versatility packaging method being easily achieved knockout course, it includes the following steps, tooling surface is cleaned, even spread release agent, non-porous release film then is covered to the tooling surface after coated release agent, vacuumize process is carried out to non-porous release film and tooling surface afterwards again, it is at negative pressure state, prepreg is laid in non-porous release film upper surface, peelable cloth is successively laid on multiple material embryo material simultaneously, there is hole isolation film, even pressing plate and airfelt, it is integrally packaged with vacuum bag to tooling is assembled, then it is heating and curing, pressurising demoulding is carried out to the tooling after solidification;Efficiently separating for composite element and tooling is realized using the power that the physical isolation and compressed air of auxiliary material apply, it solves the problems, such as that the composite element with complex profile is not easy to paste release cloth or only coats release agent not easy mold release in the past, and avoids in the past due to carrying out the case where molding damages composite element by tool.

Description

A kind of composite element versatility packaging method being easily achieved knockout course
Technical field
The invention belongs to technical field of composite material manufacturing, in particular to the versatility encapsulation side of a kind of composite element Method.
Background technique
Between composite element in the fabrication process often can be since tooling surface roughness be excessive and component and tooling Thermal expansion coefficient deviation and generate the reasons such as residual stress, cause component to be difficult to demould, especially the structures such as " drum " stringer, very Difficulty deviates from core model from the multiple material component after solidification.Release method traditionally is (such as in tooling surface mount release cloth or painting Cover release agent) it is adapted to carry out the situation that structure is simple and tooling surface smoothness is preferable, and for answering with complex profile Condensation material component or tooling are since long-time uses and when bad operation causes surface smooth degree poor, only with biography Release method on system realizes the inefficient of knockout course.In addition, since the carelessness of operator leads to tooling surface shape State is deteriorated or release agent holiday, the presence for smearing the problems such as irregular, and will lead to serious solidification rear part, easy mold release is not existing The appearance of elephant.Though can complete knockout course by means of tool, it is likely that damaging to composite element, influencing it makes Use performance.Currently, the matched well of external excellent tooling manufacture level and demoulding product and construction material system, completely It solves the above problems, but this scheme is not suitable for the developing direction of China's national situation and technology, so that domestic still use traditional side Method solidifies release problems to solve multiple material component, is unfavorable for the mass production of composite element and the guarantor of internal soundness Card.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of composite materials for being easily achieved knockout course Component versatility packaging method, the process characteristic of flexible Application auxiliary material are realized multiple using physical isolation and gas pressure Condensation material component and tooling efficiently separate, the technical scheme is that
A kind of composite element versatility packaging method being easily achieved knockout course comprising following steps:
Step 1: tooling surface being cleaned, first layer release agent, interval 15 are uniformly coated to tooling surface after cleaning After~30min, orthogonal direction uniformly coats second layer release agent, orthogonal with second layer release agent after being spaced 15~30min again Direction uniformly coats third layer release agent;
Step 2: by one layer of non-porous release film, entirely laying is on tooling surface, then to outer rim in the middle part of non-porous release film Squeeze residual air, then excludes the bubble between isolation film and tooling;
Step 3: non-porous release film edge being sealed to using sealing joint strip and is arranged vacuum gas nozzle, is vacuumized, is guaranteed Vacuum degree is not more than -0.092MPa, and then non-porous release film is made closely to be attached to tooling surface;
Step 4: being laid with prepreg in non-porous release film upper surface, while being successively laid with peelable cloth on multiple material blank, having Hole isolation film, even pressing plate and airfelt;
Step 5: tooling assembled in step 4 being integrally packaged with vacuum bag, then vacuum bag take out true Vacancy reason is put into autoclave after vacuum processing and is solidified so that vacuum degree is not more than -0.092MPa;
Step 6: to the tooling after solidification by being taken out in autoclave, being sealed off after cooling, opening is connected to non-porous Vacuum gas nozzle on isolation film makes composite element effectively realize the separation with tooling surface by applying compressed air.
The non-porous release film, can directly to contact prepreg material, the smooth resin that will not influence in surface flows, and With preferable toughness, air-tightness and heat resistance.
Tooling more complicated for forming surface in step 2, it is ensured that avoid isolation film from existing while good fit between the two There is fold in the biggish position of Curvature varying.
Compared with prior art, the beneficial effects of the present invention are: using auxiliary material physical isolation and compressed air The power of application realizes efficiently separating for composite element and tooling, solves the previous composite material structure with complex profile Part be not easy to paste release cloth or only coating release agent not easy mold release the problem of, and avoid in the past due to being carried out by tool The case where molding damages composite element.
Detailed description of the invention
Fig. 1 is using versatility encapsulation schematic diagram of the invention;
Fig. 2 is using composite element knockout course schematic diagram of the invention.
In figure: 1-tooling, 2-release agents, 3-non-porous release films, 4-sealing joint strips, 5-vacuum gas nozzles, 6-multiple materials Blank, 7-peelable cloth, 8-have hole isolation film, 9-even pressing plates, 10-airfelts, 11-vacuum bags, 12-compressed airs.
Specific embodiment
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention In explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
If Fig. 1 to Fig. 2 shows, the present invention provides a kind of composite element versatility encapsulation for being easily achieved knockout course Method comprising following steps:
A kind of composite element versatility packaging method being easily achieved knockout course comprising following steps:
Step 1: tooling surface is cleared up using acetone organic solvent, it is equal on tooling surface after 30min is dried in cleaning Three layers of release agent of even coating coats the orthogonal thereto direction in direction, the time interval of every layer of release agent coating between every layer of release agent For 15~30min, next step operation is carried out after coating 15~30min of third layer release agent;
Step 2: by one layer of non-porous release film, entirely laying is on tooling surface, then to outer rim in the middle part of non-porous release film Exclusion remains in the air between isolation film and tooling;
Step 3: non-porous release film edge being sealed to using sealing joint strip and is arranged vacuum gas nozzle, is vacuumized, is guaranteed Vacuum degree is not more than -0.092MPa, and then non-porous release film is made closely to be attached to tooling surface;
Step 4: being laid with prepreg in non-porous release film upper surface, while being successively laid with peelable cloth on multiple material blank, having Hole isolation film, even pressing plate and airfelt;
Step 5: the tooling after step 4 operation then carrying out vacuum bag together with blank overall package using vacuum bag Vacuumize process, it is ensured that vacuum degree is not more than -0.092MPa, and packaged tooling and embryo material are put into autoclave and consolidated Change;
Step 6: by the tooling after solidification by sealing off after taking out cooling in autoclave, opening is connected in non-porous release film Vacuum gas nozzle makes composite element effectively realize the separation with tooling surface by applying compressed air.
The non-porous release film, can directly to contact prepreg material, the smooth resin that will not influence in surface flows, and With preferable toughness, air-tightness and heat resistance.
Tooling more complicated for forming surface in step 2, it is ensured that avoid isolation film from existing while good fit between the two There is fold in the biggish position of Curvature varying.
The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, although referring to above-described embodiment pair The present invention is described in detail, and the those of ordinary skill in field is it is understood that still can be to specific embodiment party of the invention Formula is modified or replaced equivalently, and without departing from any modification of spirit and scope of the invention or equivalent replacement, it should all Cover in present claims range.

Claims (3)

1. a kind of composite element versatility packaging method for being easily achieved knockout course, it is characterised in that: including following step It is rapid:
Step 1: tooling surface being cleared up using acetone organic solvent, after 30min is dried in cleaning, is uniformly applied on tooling surface Three layers of release agent is covered, the orthogonal thereto direction in direction is coated between every layer of release agent, the time interval of every layer of release agent coating is 15 ~30min carries out next step operation after coating 15~30min of third layer release agent;
Step 2: by one layer of non-porous release film, entirely laying then squeezes in the middle part of non-porous release film to outer rim on tooling surface Remain in the air between isolation film and tooling;
Step 3: non-porous release film edge being sealed to using sealing joint strip and is arranged vacuum gas nozzle, is vacuumized, guarantees vacuum Degree is not more than -0.092MPa, and then non-porous release film is made closely to be attached to tooling surface;
Step 4: be laid with prepreg in non-porous release film upper surface, while be successively laid on multiple material blank peelable cloth, have hole every From film, even pressing plate and airfelt;
Step 5: using vacuum bag to the tooling after step 4 operation together with blank overall package, then vacuum bag take out true Vacancy reason, it is ensured that vacuum degree is not more than -0.092MPa, and packaged tooling and embryo material are put into autoclave and solidified;
Step 6: by the tooling after solidification by sealing off after taking out cooling in autoclave, opening the vacuum being connected in non-porous release film Gas nozzle makes composite element effectively realize the separation with tooling surface by applying compressed air.
2. a kind of composite element versatility packaging method for being easily achieved knockout course according to claim 1, Be characterized in that: the non-porous release film, can directly to contact prepreg material, the smooth resin that will not influence in surface flows, and And there is preferable toughness, air-tightness and heat resistance.
3. a kind of composite element versatility packaging method for being easily achieved knockout course according to claim 1, It is characterized in that: tooling more complicated for forming surface in step 2, it is ensured that avoid isolation film from existing while good fit between the two There is fold in the biggish position of Curvature varying.
CN201910211277.1A 2019-03-20 2019-03-20 A kind of composite element versatility packaging method being easily achieved knockout course Pending CN109774193A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110116510A (en) * 2019-05-28 2019-08-13 湖北三江航天万峰科技发展有限公司 A kind of integrated molding method of composite material cabin
CN110385865A (en) * 2019-07-04 2019-10-29 成都飞机工业(集团)有限责任公司 A method of improving composite product mold face surface quality
CN110385867A (en) * 2019-06-18 2019-10-29 成都飞机工业(集团)有限责任公司 A kind of production method of the composite material for repairing
GB2577964A (en) * 2018-08-07 2020-04-15 Boeing Co Composite fabrication system with alternating air pressure control

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Publication number Priority date Publication date Assignee Title
CN104085120A (en) * 2014-06-30 2014-10-08 江苏恒神纤维材料有限公司 Manufacturing process of composite arm frame
CN104149363A (en) * 2014-07-04 2014-11-19 江苏海纬集团有限公司 Process for manufacturing glass steel products
CN104401092A (en) * 2014-11-18 2015-03-11 江苏恒神纤维材料有限公司 Method for enabling carbon fiber composite thick laminated structure to uniformly absorb resin and laminated structure
CN105729820A (en) * 2016-03-12 2016-07-06 安徽佳力奇航天碳纤维有限公司 Carbon fiber composite material laminating process
CN108068357A (en) * 2016-11-14 2018-05-25 昌河飞机工业(集团)有限责任公司 A kind of forming method for improving the non-patch mold forming facial plane degree of composite material parts
CN108859171A (en) * 2018-05-17 2018-11-23 绍兴文理学院元培学院 A kind of preparation method of frp cable protective pipe
CN109049755A (en) * 2018-09-29 2018-12-21 西安飞机工业(集团)有限责任公司 A kind of stripper apparatus and release method of large-scale composite material part

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104085120A (en) * 2014-06-30 2014-10-08 江苏恒神纤维材料有限公司 Manufacturing process of composite arm frame
CN104149363A (en) * 2014-07-04 2014-11-19 江苏海纬集团有限公司 Process for manufacturing glass steel products
CN104401092A (en) * 2014-11-18 2015-03-11 江苏恒神纤维材料有限公司 Method for enabling carbon fiber composite thick laminated structure to uniformly absorb resin and laminated structure
CN105729820A (en) * 2016-03-12 2016-07-06 安徽佳力奇航天碳纤维有限公司 Carbon fiber composite material laminating process
CN108068357A (en) * 2016-11-14 2018-05-25 昌河飞机工业(集团)有限责任公司 A kind of forming method for improving the non-patch mold forming facial plane degree of composite material parts
CN108859171A (en) * 2018-05-17 2018-11-23 绍兴文理学院元培学院 A kind of preparation method of frp cable protective pipe
CN109049755A (en) * 2018-09-29 2018-12-21 西安飞机工业(集团)有限责任公司 A kind of stripper apparatus and release method of large-scale composite material part

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2577964A (en) * 2018-08-07 2020-04-15 Boeing Co Composite fabrication system with alternating air pressure control
CN110116510A (en) * 2019-05-28 2019-08-13 湖北三江航天万峰科技发展有限公司 A kind of integrated molding method of composite material cabin
CN110385867A (en) * 2019-06-18 2019-10-29 成都飞机工业(集团)有限责任公司 A kind of production method of the composite material for repairing
CN110385865A (en) * 2019-07-04 2019-10-29 成都飞机工业(集团)有限责任公司 A method of improving composite product mold face surface quality

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