CN110616046A - Method suitable for bonding large-size large-load radome tension-compression pads - Google Patents
Method suitable for bonding large-size large-load radome tension-compression pads Download PDFInfo
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- CN110616046A CN110616046A CN201910691690.2A CN201910691690A CN110616046A CN 110616046 A CN110616046 A CN 110616046A CN 201910691690 A CN201910691690 A CN 201910691690A CN 110616046 A CN110616046 A CN 110616046A
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- Prior art keywords
- bonding
- radome
- size
- tension
- compression pad
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
- C09J5/02—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers involving pretreatment of the surfaces to be joined
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
- C09J5/06—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers involving heating of the applied adhesive
Abstract
The invention belongs to the technical field of aviation structure tests, and particularly relates to a method suitable for bonding a large-size large-load radome tension-compression pad, which comprises the following steps of firstly, designing a symbolic loading tension-compression pad in a large-size radome test area; secondly, cleaning and polishing the bonding surface; thirdly, coating an adhesive on the surface of the adhesive; fourthly, microwave heating and drying are carried out on the surface adhesive; fifthly, bonding the tension and compression pad with the large-size radome; and sixthly, applying pressure to the tension and compression pad in the loading area by using a loading block to ensure that the bonding is sufficient. According to the method provided by the invention, when the tension and compression pad is bonded in the large-load large-size radome test area, the microwave heating mode is adopted to perform the accelerated drying treatment on the adhesive in each bonding area in the gluing process, the heating temperature is flexibly adjusted for different environmental humidity and different adhesives, the adopted adhesive is fully suitable for the bonding condition, the optimal bonding state is achieved, and the bonding quality is ensured.
Description
Technical Field
The invention belongs to the technical field of aviation structure tests, and particularly relates to a method suitable for bonding pull-press pads of a large-size large-load radome.
Background
At the present stage, along with the development of the aircraft avionics technology and the requirement of high-performance combat, more and more electronic products such as radars, antennas and the like are installed on various airplanes, the size of an aircraft radome is larger and larger, meanwhile, the requirement of high maneuverability of the airplanes enables the load borne by the radome to be larger and larger, how to efficiently and simply develop the static test of the large-size and large-load radome is particularly important for the development of the whole aviation field.
At present, in the static test of the radome, test load is mainly transmitted by means of a loading tension and compression pad, the loading tension and compression pad is fixed on the surface of the radome by adopting an adhesion method depending on the stress state of the radome in flight, and then a coordinated loading system is utilized to perform static test control loading. Under the action of a large load, the bonding quality of the tension and compression pad directly influences the efficiency and quality of a static test, the large-load radome tension and compression pad at the present stage adopts a bonding and curing mode of bonding with an adhesive and naturally airing, the requirement on the quality of glue brushing on the bonding surface is good, the canvas tension and compression pad with good air permeability is aired for at least 3 days in dry weather, the tension and compression pads such as wood blocks and polyurethane with poor air permeability are aired for at least one week, the test progress is seriously influenced by the disposal mode, the risk of debonding of the canvas and the tension and compression pad in the test process is increased, part of small-size radomes are transferred to an oven for accelerated bonding and curing after the tension and compression pad is naturally bonded, but the bonding surface at the moment is covered by the tension and compression pad, the accelerated effect is only reflected on the side surface of the bonding layer leaking outside the edge of the tension and compression pad, the main bonding surface area is integrally covered by the pull-press pad, accelerated bonding and curing of the drying bonding surface cannot be realized, and the accelerated method with low efficiency cannot be applied to the large-size radome due to factors such as inconvenient transportation, limited oven size and the like.
Disclosure of Invention
The purpose of the invention is as follows: in order to solve the problem that the bonding efficiency of the large-size large-load radome tension and compression pad is low by using the traditional bonding mode, the invention provides a method suitable for bonding the large-size large-load radome tension and compression pad.
The technical scheme is as follows: a method for bonding tension-compression pads of a large-size and large-load radome comprises the following steps:
firstly, designing and manufacturing a symbolic loading tension-compression pad in a large-size radome test area;
secondly, cleaning and polishing a large-size radome test area and a bonding surface of a tension and compression pad;
thirdly, coating an adhesive on the test area of the large-size radome and the bonding surface of the tension and compression pad;
fourthly, microwave heating and drying are carried out on the large-size radome test area and the adhesive on the bonding surface of the tension and compression pad according to the on-site environment humidity and the adhesive bonding characteristics;
fifthly, bonding the tension and compression pad with the large-size radome;
and sixthly, applying pressure to the tension and compression pad in the loading area by adopting a loading block to ensure that the bonding is sufficient.
In the first step, the tension and compression pad is made of a polyurethane material, the rigidity of the material is good in matching performance with the radome, the loading is uniform, and stress concentration on the radome when an accessory is loaded is avoided.
And in the second step, a sand blowing polishing treatment method is adopted for polishing, and the polishing method is high in polishing speed and more uniform in polishing. The roughness of the surface of the radome is improved by polishing, and the bonding strength is increased.
In the third step, three times of brushing are adopted, and the cooling time of each brushing is gradually reduced; the brushing process can remove the volatile matters among the adhesives to the maximum extent and achieve better bonding effect.
And in the fourth step, while microwave heating is carried out, a thermocouple is adopted to carry out real-time temperature acquisition on the characteristic points of the adhesive, so that the heating temperature, the heating time and the heating rate are ensured to reach the optimal curing time, curing temperature and heating rate of the adhesive. Such heating conditions enable the best gluing effect to be achieved.
In the sixth step, the weight block is selected by the loading block, the weight block is adopted to apply pressure without other pressure applying equipment, the pressure application is convenient, and the weight parameters on the weight block can be directly converted into the pressure.
The beneficial technical effects are as follows: the method provided by the invention can realize efficient and convenient bonding of the large-size radome tension-compression pad, saves test preparation time, saves workload of test piece disassembly and carrying, does not need to purchase oven equipment with low acceleration efficiency, saves resources and workshop space, ensures bonding quality, realizes application of a large-load state of the large-size radome, and is beneficial to development of model development.
Drawings
FIG. 1 is a schematic view of microwave heating and drying of an adhesive,
fig. 2 is a schematic diagram of bonding and compacting of the tension and compression pad.
Detailed Description
The existing method for naturally airing and bonding the tension and compression pad needs a longer airing period and is low in bonding quality, and the existing method for locally accelerating and curing the tension and compression pad of the small-size radome is not obvious in effect and is not suitable for the large-size radome. Aiming at the problems, the invention designs the pull-press pad accelerated bonding method suitable for the large-load large-size radome, the large-size radome is not required to be repeatedly disassembled, assembled and carried, the drying of the adhesive is accelerated in real time on site, and the bonding quality and the test efficiency are improved.
Specifically, the method for bonding the tension and compression pads of the large-size and large-load radome comprises the following steps:
firstly, designing and manufacturing a symbolic loading tension-compression pad in a large-size radome test area; in the step, the loading tension and compression pad is completely attached to the radome loading area so as to ensure the authenticity of loading;
secondly, cleaning and polishing a large-size radome test area and a bonding surface of a tension and compression pad;
thirdly, coating an adhesive on the test area of the large-size radome and the bonding surface of the tension and compression pad;
fourthly, microwave heating and drying are carried out on the large-size radome test area and the adhesive on the bonding surface of the tension and compression pad according to the on-site environment humidity and the bonding characteristics of the adhesive, as shown in figure 1;
fifthly, bonding the tension and compression pad with the large-size radome, as shown in fig. 2;
sixth, the loading block is used to apply pressure to the loading area tension and compression pad to ensure that the pad is fully bonded, as shown in fig. 2.
In the first step, the tension and compression pad is made of a polyurethane material, the rigidity of the material is good in matching performance with the radome, the loading is uniform, and stress concentration on the radome when an accessory is loaded is avoided.
And in the second step, a sand blowing polishing treatment method is adopted for polishing, and the polishing method is high in polishing speed and more uniform in polishing. The roughness of the surface of the radome is improved by polishing, and the bonding strength is increased.
In the third step, at least three times of brushing are carried out during brushing; the cooling time of each brushing is decreased gradually; the brushing process can remove the volatile matters among the adhesives to the maximum extent and achieve better bonding effect.
And in the fourth step, while microwave heating is carried out, a thermocouple is adopted to carry out real-time temperature acquisition on the characteristic points of the adhesive, so that the heating temperature, the heating time and the heating rate are ensured to reach the optimal curing time, curing temperature and heating rate of the adhesive. Such heating conditions enable the best gluing effect to be achieved.
In the step, microwave heating is adopted to accelerate curing of the adhesive, the specific curing method can flexibly adjust the acceleration temperature, the acceleration time and the heating surface interval according to different environmental humidity and the characteristics of different adhesives, and the large-size radome tension and compression pad bonding is realized conveniently and efficiently by combining with the compression weight.
In the sixth step, the weight block is selected by the loading block, the weight block is adopted to apply pressure without other pressure applying equipment, the pressure application is convenient, and the weight parameters on the weight block can be directly converted into the pressure.
According to the method provided by the invention, when the tension and compression pad is bonded in the large-load large-size radome test area, the microwave heating mode is adopted to perform the accelerated drying treatment on the adhesive in each bonding area in the gluing process, the heating temperature is flexibly adjusted for different environmental humidity and different adhesives, the adopted adhesive is fully suitable for the bonding condition, the optimal bonding state is achieved, and the bonding quality is ensured.
Claims (8)
1. A method suitable for bonding a large-size large-load radome tension-compression pad is characterized by comprising the following steps: the method comprises the following steps;
firstly, designing a symbol-shaped loading tension and compression pad in a large-size radome test area;
secondly, cleaning and polishing a large-size radome test area and a bonding surface of a tension and compression pad;
thirdly, coating adhesives on the test area of the large-size radome and the bonding surface of the tension and compression pad;
fourthly, microwave heating and drying are carried out on the adhesive on the test area of the large-size radome and the bonding surface of the tension and compression pad according to the humidity of the on-site environment and the bonding characteristics of the adhesive;
fifthly, bonding the tension and compression pad with the large-size radome;
and sixthly, applying pressure to the tension and compression pad in the loading area by using a loading block to ensure that the bonding is sufficient.
2. The method for bonding the pull-press pad of the large-size and large-load radome as claimed in claim 1, wherein the method comprises the following steps: in the second step, the sanding adopts a sand blowing sanding treatment method.
3. The method for bonding the pull-press pad of the large-size and large-load radome as claimed in claim 1, wherein the method comprises the following steps: and in the third step, brushing the adhesive for at least three times.
4. The method for bonding the pull-press pad of the large-size and large-load radome as claimed in claim 3, wherein the method comprises the following steps: the cooling time of each brush coating is decreased gradually.
5. The method for bonding the pull-press pad of the large-size and large-load radome as claimed in claim 1, wherein the method comprises the following steps: and in the fourth step, while microwave heating is carried out, a thermocouple is adopted to carry out real-time temperature acquisition on the characteristic points of the adhesive, so that the heating temperature, the heating time and the heating rate are ensured to reach the optimal curing time, curing temperature and heating rate of the adhesive.
6. The method for bonding the pull-press pad of the large-size and large-load radome as claimed in claim 1, wherein the method comprises the following steps: in the sixth step, the weight block is selected by the loading block.
7. The method for bonding the pull-press pad of the large-size and large-load radome as claimed in claim 6, wherein the method comprises the following steps: the weight block is provided with weight parameters.
8. The method for bonding the pull-press pad of the large-size and large-load radome as claimed in claim 1, wherein the method comprises the following steps: in the first step, the tension and compression pad is made of polyurethane material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910691690.2A CN110616046A (en) | 2019-07-26 | 2019-07-26 | Method suitable for bonding large-size large-load radome tension-compression pads |
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| CN201910691690.2A CN110616046A (en) | 2019-07-26 | 2019-07-26 | Method suitable for bonding large-size large-load radome tension-compression pads |
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| CN110616046A true CN110616046A (en) | 2019-12-27 |
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| CN201910691690.2A Pending CN110616046A (en) | 2019-07-26 | 2019-07-26 | Method suitable for bonding large-size large-load radome tension-compression pads |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117054199A (en) * | 2023-10-11 | 2023-11-14 | 沈阳市中飞机械厂有限公司 | Radome mechanical test tool |
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| CN105272119A (en) * | 2015-10-23 | 2016-01-27 | 航天材料及工艺研究所 | Uniform compaction method of silicon oxide based antenna housing composite |
| CN105628356A (en) * | 2015-12-22 | 2016-06-01 | 中国航空工业集团公司济南特种结构研究所 | Method of precisely positioning loaded canvas belt in case of large curvature radome static test |
| CN105666895A (en) * | 2016-01-15 | 2016-06-15 | 中南大学 | Composite energy field heating device |
| CN207050968U (en) * | 2017-07-14 | 2018-02-27 | 中国航空工业集团公司济南特种结构研究所 | A kind of antenna house slow test biaxial loadings device |
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- 2019-07-26 CN CN201910691690.2A patent/CN110616046A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5765008A (en) * | 1980-10-09 | 1982-04-20 | Nippon Telegr & Teleph Corp <Ntt> | Electric heating type radome |
| CN1361039A (en) * | 2002-01-29 | 2002-07-31 | 许陆文 | Fast repair technique and apparatus for damaged composite material in aircraft structure |
| CN101549162A (en) * | 2009-05-11 | 2009-10-07 | 新疆大学 | Microwave continuously heating and sterilizing method and special equipment mechanism for solid materiel |
| CN105272119A (en) * | 2015-10-23 | 2016-01-27 | 航天材料及工艺研究所 | Uniform compaction method of silicon oxide based antenna housing composite |
| CN105628356A (en) * | 2015-12-22 | 2016-06-01 | 中国航空工业集团公司济南特种结构研究所 | Method of precisely positioning loaded canvas belt in case of large curvature radome static test |
| CN105666895A (en) * | 2016-01-15 | 2016-06-15 | 中南大学 | Composite energy field heating device |
| CN207050968U (en) * | 2017-07-14 | 2018-02-27 | 中国航空工业集团公司济南特种结构研究所 | A kind of antenna house slow test biaxial loadings device |
Non-Patent Citations (1)
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| 赵永鹏等: "中温固化树脂修补高温固化雷达罩研究", 《航空装备维修技术及应用研讨会论文集中国航空学会会议论文集》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117054199A (en) * | 2023-10-11 | 2023-11-14 | 沈阳市中飞机械厂有限公司 | Radome mechanical test tool |
| CN117054199B (en) * | 2023-10-11 | 2023-12-22 | 沈阳市中飞机械厂有限公司 | Radome mechanical test tool |
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Application publication date: 20191227 |
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