CN109021897A - A kind of adhesive and its application method - Google Patents
A kind of adhesive and its application method Download PDFInfo
- Publication number
- CN109021897A CN109021897A CN201810636008.5A CN201810636008A CN109021897A CN 109021897 A CN109021897 A CN 109021897A CN 201810636008 A CN201810636008 A CN 201810636008A CN 109021897 A CN109021897 A CN 109021897A
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- mixing
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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
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- 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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a kind of adhesive and its application method, which includes following components by weight: 100 parts of modified epoxy, 10 parts of dibutyl phthalate, 20-30 parts of polysulfide rubber, 20-30 parts of polyamide curing agent and 20-40 parts of fumed silica.The adhesive has thixotropy, and brushing bondline thickness will not be flowed in 4mm or less, is convenient for gluing constructing operation.It can react at room temperature, process is without heating, it is easy to use, and there is preferable adhesive property with rubber substrate, its every material body performance indicator and processing performance are good, can effectively ensure that the bonding between the large size heat insulation layer of solid propellant rocket motor charge combustion chamber, compatibility are good, normal temperature cure can be achieved, curing time is adjustable.
Description
Technical field
The invention belongs to solid propellant rocket manufacturing technology fields, and in particular to a kind of adhesive and its application method.
Background technique
The bonding interface structure of powder charge combustion chamber is respectively shell and heat insulation layer, heat insulation layer and heat insulation layer, heat insulation layer and lining
Layer, lining and powder column etc..Propellant combustion face moment increases when interfacial detachment will lead to engine combustion work, and housing pressure is acute
Increase, explodes when serious, lead to test failure.Bonding between the rubber-based heat insulation layer of big-block engine is particularly important,
It will receive great shearing force in use process, be all unable to satisfy requirement using adhesives such as polyester, polyurethane,
Conventional solidified epoxy adhesive, adhesive strength is not up to when brushing can be flowed when placing vertically later or mobile performance meets
To requirement, therefore, a kind of normal temperature cure is obtained, there is higher toughness, guarantees the thixotroping being effectively bonded between large-scale heat insulation layer
Type adhesive is very important.
Summary of the invention
In order to solve the above technical problem, the present invention provides a kind of adhesive and its application methods, it is ensured that rubber-based insulation
Room temperature is bonded to obtain effective guarantee between bed boundary.
The technical solution adopted by the present invention is that a kind of adhesive, including following components by weight: modified epoxy
100 parts of resin, 10 parts of dibutyl phthalate, 20-30 parts of polysulfide rubber, 20-30 parts of polyamide curing agent and gas phase dioxy
20-40 parts of SiClx.
Further, the modified epoxy is E54；Polysulfide rubber is JLY-121；Polyamide curing agent is 200#.
Further, the room temperature curing time of the adhesive is 120h~168h, and ambient temperature is adopted at 20 DEG C~25 DEG C
It is not flowed with the adhesive brushing bondline thickness in 4mm or less.
The invention further relates to the application methods of the adhesive, comprising the following steps:
1) control weighs and mixed environment temperature is 22 ± 6 DEG C, humidity≤75%；It is mixed, is mixed using mixing machine
Running equipment before closing, avoids blade from contacting with inner wall of mixer, mixing kettle cools down in advance；
2) first dibutyl phthalate, polysulfide rubber are added in mixing kettle, pot then is added in polyamide curing agent
In, part white carbon black is added, is shut down after mixing；
3) remaining white carbon black is added, shuts down after mixing；It is eventually adding modified epoxy, is shut down after mixing,
Discharging；
4) stickup position outer surface is cleared up, after drying, surface is protected, then squeegeeing step 3) it is resulting
Glue brushes the time within 30min with a thickness of 4mm；Finally bonding site is docked, bonding can be completed in solidification.
Further, step 2) and 3) in, every time mixing when, mixing machine revolving speed be 25~30r/min, incorporation time 5
±2min；For the last time.
Further, step 2) and 3) in, every time be added raw material mix and shuts down after carry out clear pot, specifically clear up paddle
Leaf, and the glue in the mixing kettle the bottom of a pan is scooped up, avoid bottom incomplete mixing.
Further, it after the clear pot of last time, is mixed again, incorporation time 3-7min.
Further, in mixed process and after mixing, pay attention to heat dissipation, material temperature≤40 DEG C.
Further, it is detected before discharging, sizing material is coated on rubber strip, it is vertical to place 10min or more, it generates
Flowing then continuess to mix；Otherwise it discharges.
The invention further relates to the adhesive or the method to be insulated in solid propellant rocket motor charge combustion chamber
Bonding purposes between layer.
Adhesive provided by the invention has thixotropy, and brushing bondline thickness will not be flowed in 4mm or less, convenient for applying
Glue constructing operation.And epoxy resin and polyamide curing agent can react at room temperature, process is without heating, using just
Victory, and there is preferable adhesive property with rubber substrate, shearing strength is high.
It is placed in 1h vertically after adhesive brushing in the present invention, brushing thickness does not generate sagging in 2-6mm, but brushes
It can produce flowing in 2h under external force, adhesive strength is met the requirements.Tensile strength is 4-10MPa；Elongation percentage is in 60-
130%, pull-off strength > 2.5MPa, shear strength > 1.5MPa, peel strength > 3N/mm, ablating rate≤0.3mm/s.It is each
Item material body performance indicator and processing performance are good, can effectively ensure that solid propellant rocket motor charge combustion chamber large size is insulated
Bonding between layer, compatibility is good, it can be achieved that normal temperature cure, curing time are adjustable.
Specific embodiment
The present invention is further illustrated below with reference to embodiment, but the scope of protection of present invention is not limited to implement
The range of example statement.
One, adhesive formulation and brush after performance.
The performance after adhesive formulation and brushing in embodiment 1-4 is specifically shown in the following table 1, and deal is parts by weight.
Table 1
Two, the application method of adhesive
1, prepare
It is whether normal that material color must be observed before, if having agglomeration and agglomeration, fumed silica drying；
It weighs, environment temperature control is (22 ± 6) DEG C, humidity≤75%.
Mixing, environment temperature control are (22 ± 6) DEG C, humidity≤75%.
Trial operation mixing apparatus, confirmation blade and pot wall gap are answered before weighing, are avoided the occurrence of and are seriously scraped wall (scratch occur),
It controls blade and pot wall gap is 0.5~1mm.
Mixing kettle shifts to an earlier date water flowing bath or ice salt bath cooling.Combined amount is advisable for the 30%~70% of mixing kettle capacity.
2, hybrid technique are as follows:
2.1 first dibutyl phthalate, polysulfide rubber are added in mixing kettle.Polyamide curing agent is added vertical mixed
It closes in pot, the white carbon black of about 2/3 total amount is added, control mixing machine revolving speed is that (25~30) r/min stops after mixing (5 ± 2) min
Machine.Cleaning blade is shoveled using copper, and the glue in the bottom of a pan is scooped up, avoids bottom incomplete mixing.
2.2 are added the white carbon black of remaining 1/3 total amount, and control mixing machine revolving speed is (25~30) r/min, mix (5 ± 2)
After min, shut down.Clear pot method is same as above.
2.3 are added modified epoxy, and control mixing machine revolving speed is that (25~30) r/min stops after mixing (5 ± 2) min
Machine.After clear pot, after remixing (5 ± 2) min, shut down.It discharges after clear pot.
2.4 mixing terminate to open mixing pot cover heat dissipation immediately, must not be stored in slurry in closed pot；
It tests material temperature (≤40 DEG C).Mainly the system reacts gentle, controllable in this temperature range, then anti-more than 35 DEG C
It should accelerate, it is possible to create implode, system viscosity quickly increase, and lose flowability, and adhesive property is also greatly reduced, using effective
Phase substantially shortens.
Detection effect: glue is coated on rubber strip, and vertical place is no less than 10min, if generating flow phenomenon, i.e. tear drop
Or sagging, then it continuess to mix；Otherwise it can discharge.The validity period of the adhesive is 1h.Slurry, which should be contained in, easily to be shakeout, radiates
In container, reaction heat localization is prevented.
3, it brushes and bonding site outer surface is cleared up using ethyl acetate or chloroform, after drying, use film
Or cotton (antistatic material) carries out the fifth wheels such as slushing oil, solvent to surface and pollutes.It is a thin layer of in bonding plane brushing
Glue, control brush time control in 30min with a thickness of 4mm
4, it pastes and solidifies and dock bonding site, carry out room temperature curing, temperature is 20 DEG C~25 DEG C, and curing time is
120h~168h.
It is bonded between the heat insulation layer of certain two engine, area is respectively 10000cm2And 12500cm2, use the adhesive
Bonding processing is carried out, then detects Comprehensive Evaluation through radiography and industry CT, bonding is good, meets requirement, and product is logical
Ground experiment has been crossed, success is achieved.
The above embodiments are only the preferred technical solution of the present invention, and are not construed as limitation of the invention, this hair
Bright protection scope should be with the technical solution of claim record, technical characteristic in the technical solution recorded including claim
Equivalents are protection scope.Equivalent replacement i.e. within this range is improved, also within protection scope of the present invention.
Claims (10)
1. a kind of adhesive, which is characterized in that including following components by weight: 100 parts of modified epoxy, adjacent benzene two
10 parts of formic acid dibutyl ester, 20-30 parts of polysulfide rubber, 20-30 parts of polyamide curing agent and 20-40 parts of fumed silica.
2. adhesive according to claim 1, it is characterised in that: the modified epoxy is E54；Polysulfide rubber is
JLY-121；Polyamide curing agent is 200#.
3. adhesive according to claim 1, it is characterised in that: the room temperature curing time of the adhesive be 120h~
168h, ambient temperature are not flowed at 20 DEG C ~ 25 DEG C, using the adhesive brushing bondline thickness in 4mm or less.
4. the application method of adhesive described in claim 1-3 any one, which comprises the following steps:
1) control weighs and mixed environment temperature is 22 ± 6 DEG C, humidity≤75%；It is mixed using mixing machine, fortune before mixing
Row equipment, avoids blade from contacting with inner wall of mixer, and mixing kettle cools down in advance；
2) first dibutyl phthalate, polysulfide rubber are added in mixing kettle, then polyamide curing agent is added in pot, then
Part white carbon black is added, shuts down after mixing；
3) remaining white carbon black is added, shuts down after mixing；It is eventually adding modified epoxy, is shut down after mixing, is discharged；
4) clear up to pasting position outer surface, after drying, surface protected, then squeegeeing step 3) resulting glue is thick
Degree is 4mm, brushes the time within 30min；Finally bonding site is docked, bonding can be completed in solidification.
5. according to the method described in claim 4, it is characterized by: step 2 and 3) in, every time mixing when, mixing machine revolving speed is
25~30r/min, incorporation time are 5 ± 2min；For the last time.
6. according to the method described in claim 4, it is characterized by: step 2 and 3) in, every time be added raw material mix and shut down
After carry out clear pot, the glue in the mixing kettle the bottom of a pan and is scooped up, avoids bottom incomplete mixing by specifically cleaning blade.
7. according to the method described in claim 6, it is characterized by: being mixed again, incorporation time after the clear pot of last time
For 3-7min.
8. according to method described in claim 4-7 any one, it is characterised in that: in mixed process and after mixing, pay attention to dissipating
Heat, material temperature≤40 DEG C.
9. according to the method described in claim 4, it is characterized by: being detected before discharging, by sizing material coated in rubber strip
On, it is vertical to place 10min or more, it generates flowing and then continuess to mix；Otherwise it discharges.
10. method described in adhesive described in claim 1-3 any one or claim 4-9 any one is in solid
Bonding purposes between the heat insulation layer of projectile charge combustion chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810636008.5A CN109021897A (en) | 2018-06-20 | 2018-06-20 | A kind of adhesive and its application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810636008.5A CN109021897A (en) | 2018-06-20 | 2018-06-20 | A kind of adhesive and its application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109021897A true CN109021897A (en) | 2018-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810636008.5A Pending CN109021897A (en) | 2018-06-20 | 2018-06-20 | A kind of adhesive and its application method |
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| CN (1) | CN109021897A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110343495A (en) * | 2019-08-13 | 2019-10-18 | 山东益丰生化环保股份有限公司 | A kind of epoxy resin adhesive and preparation method thereof |
| CN111454672A (en) * | 2020-05-25 | 2020-07-28 | 湖北航泰科技有限公司 | Adhesive film for bonding rubber material and preparation method thereof |
| CN114479738A (en) * | 2022-03-29 | 2022-05-13 | 上海喆航航空科技有限公司 | Preparation method and use method of body composite material adhesive |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103421458A (en) * | 2013-07-19 | 2013-12-04 | 吴江龙硕金属制品有限公司 | Metal bonder and preparation method thereof |
| CN106337758A (en) * | 2016-08-29 | 2017-01-18 | 湖北三江航天江河化工科技有限公司 | Partition plate heat insulation structure for engine combustion chamber and preparation method |
| CN107828360A (en) * | 2017-11-16 | 2018-03-23 | 西安长峰机电研究所 | A kind of normal temperature cure solid rocket motor nozzle structural adhesive |
-
2018
- 2018-06-20 CN CN201810636008.5A patent/CN109021897A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103421458A (en) * | 2013-07-19 | 2013-12-04 | 吴江龙硕金属制品有限公司 | Metal bonder and preparation method thereof |
| CN106337758A (en) * | 2016-08-29 | 2017-01-18 | 湖北三江航天江河化工科技有限公司 | Partition plate heat insulation structure for engine combustion chamber and preparation method |
| CN107828360A (en) * | 2017-11-16 | 2018-03-23 | 西安长峰机电研究所 | A kind of normal temperature cure solid rocket motor nozzle structural adhesive |
Non-Patent Citations (1)
| Title |
|---|
| 贺罗曼: "《环氧树脂胶粘剂》", 30 April 2004, 中国石化出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110343495A (en) * | 2019-08-13 | 2019-10-18 | 山东益丰生化环保股份有限公司 | A kind of epoxy resin adhesive and preparation method thereof |
| CN111454672A (en) * | 2020-05-25 | 2020-07-28 | 湖北航泰科技有限公司 | Adhesive film for bonding rubber material and preparation method thereof |
| CN114479738A (en) * | 2022-03-29 | 2022-05-13 | 上海喆航航空科技有限公司 | Preparation method and use method of body composite material adhesive |
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Application publication date: 20181218 |