CN108638544A

CN108638544A - Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending

Info

Publication number: CN108638544A
Application number: CN201810336138.7A
Authority: CN
Inventors: 肖雯静; 谭云水; 高李帅; 李天明; 刘宗清; 胡益太
Original assignee: Hubei Sanjiang Space Jiangbei Mechanical Engineering Co Ltd
Current assignee: Hubei Sanjiang Space Jiangbei Mechanical Engineering Co Ltd
Priority date: 2018-04-16
Filing date: 2018-04-16
Publication date: 2018-10-12
Anticipated expiration: 2038-04-16
Also published as: CN108638544B

Abstract

The invention discloses a kind of Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending, pretreatment prepares repairing and matches Adhesive mending with the ripe Film processing of ripe film heat insulation layer defect processing repairing.Ensure to repair solid engines internal insulation surface defect by using the mode of normal temperature cure, ensure that the engine of internal insulation defect can continue normal use, solves the problems, such as to cause engine normal use or can not scrap because of internal insulation defect；Internal insulation thickness and bonding surface intensity after repairing meet Solid Rocket Motor Fiber Composite Material Shell internal insulation requirement, the air-tightness and ablation property for ensureing fiber winding shell after repairing simultaneously are suitable for depth of defect and are less than 5mm, defect area less than 5000mm²Repairing.

Description

Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending

Technical field

The invention belongs to solid engines fiber winding shell heat insulating construction production fields, in particular to a kind of solid-rocket Engine fiber winding shell internal insulation cold bonding method for repairing and mending.

Background technology

Solid propellant rocket is a kind of rocket power plant of superior performance, by combustion chamber, propellant, igniter and spray The components such as pipe form.Combustion chamber is the container for storing propellant, while providing the space of burning, to bear 3000 DEG C of high temperature with Upper, high-pressure gas stream washes away.Combustion chamber internal insulation is a heat-insulated protection material asked for being placed on shell inner surface and propellant Material, major function are to take away most of heat by continuous decomposition, the ablation of itself to alleviate high-temperature fuel gas temperature to shell Transmission speed, avoid shell from reaching the temperature of crisis structural intergrity, ensure that engine often works.Chamber structure it is complete Property and reliability, depend not only on the performance of case material, depend greatly on powder charge procapsid heat-insulating material performance Advance and moulding process reliability.

Currently, hand paste is still the method that solid engines thermal insulation formable layer tradition is continued to use, the economy easy to operate, Have a wide range of application, needs to have matching adhesive, lining, propellant material and fabricating technology.Due in thermal insulation It is influenced by destabilizing factors such as environmental condition, film size, core model quality, manual operationss in layer manufacturing process, in manufacture, processing Be likely to occur in the process lack the fifth wheels such as material, impurity, interfacial detachment or due in thermal insulation construction technology misoperation cause thermal insulation After shell solidification the defects of the separation in material local bonding face.Defect generally has unsticking, bulge, hollow, alice, discounting, pit Phenomena such as, drawbacks described above inevitably influences the normal ablation of heat insulation layer, and processing may be degraded in engine under serious conditions, to ensure Solid engines normal use carries out repairing to defective heat insulation layer and is inevitable.

Invention content

Present invention aim to the deficiency of the above-mentioned technology of needle, provides and a kind of surface defect is repaired and protected It is adiabatic in the Solid Rocket Motor Fiber Composite Material Shell that internal insulation thickness and bonding surface intensity after card repairing are met the requirements Layer cold bonding method for repairing and mending.

To achieve the above object, the Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding designed by the present invention is repaiied Compensating method includes the following steps：

1) it pre-processes

Measure the thickness and area of internal insulation defect；

2) it prepares and repairs ripe film

It is 2a) thin logical：The roller spacing of rubber mixing machine is adjusted to 0.2~0.6m, heat-insulating material green glue stock is carried out by rubber mixing machine Bao Tong, and thin logical number is 3~4 times；What heat-insulating material green glue stock was selected is thermal insulation identical with engine fiber winding shell Material green glue stock；

2b) slice：Rubber mixing machine roller spacing is adjusted, carrying out slice by required thickness size is made different pre- of multiple thickness Repairing raw stock；

2c) cut-parts：The different pre- repairing of thickness is cut out into thickness of corresponding size with raw stock by the size of flat plate mold Different repairing raw stocks is spent, the different repairing of thickness is respectively put into the flat plate mold of corresponding depth of cavity with raw stock In；

2d) vulcanize：The flat plate mold for installing repairing raw stock is put into vulcanizer and is vulcanized

2e) depanning：It waits for flat plate mold temperature≤70 DEG C, opens flat plate mold, take out and repair ripe film in advance, go deburring The ripe film of repairing of different-thickness is made；

3) internal insulation defect processing

3a) polish：It polishes the internal insulation blemish surface that need to be repaired, blemish surface polishes area more than defect table Face position and exceed defect boundary 30mm, for being polished using emery cloth at Defect Edge, while Defect Edge is polished The laminating degree of repairing film and defective locations can be improved in groove, the groove of making, ensures rounding off；

3b) clean：Blemish surface position after polishing is cleaned with ethyl acetate or acetone, and is dried；

4) ripe Film processing is repaired

4a) repairing is polished with ripe film：It is polished with ripe film two sides the repairing prepared, while thickness is more than The repairing of 1.0mm polish groove with ripe film surrounding, bevelled edge 5~10mm of width, and thickness is 0.4~0.6mm at groove；

4b) cut：Ripe film is repaired after cutting out the cutting of correspondingly-sized according to blemish surface area, while to cutting It repairs afterwards and carries out mill groove processing with the boundary of ripe film one side, and it is no more than the ripe glue of the repairing of 1.0mm to select a thickness Piece cuts out bigger 30mm than blemish surface area²Cutting after upper layer repair ripe film, for top layer's film covering；

4c) clean：Upper layer repairing uses ethyl acetate or third with ripe film after repairing ripe film after cutting and cutting Ketone is cleaned, and is dried；

5) match adhesive

Prepare cold setting adhesive WAGU-90；Prepared adhesive uses in 3h, more than being needed again after validity period It prepares；WAGU-90 adhesive is the polyurethane adhesive of a kind of energy normal temperature cure, this adhesive shows pole when being bonded film Good tack, while there is higher adhesive strength, ripe shear strength >=1.0MPa of ripe/EPDM of EPDM, Ripe pull-off strength >=1.5MPa of ripe/EPDM of EPDM, ripe shear strength of ripe/nitrile rubber of nitrile rubber >= 1.5MPa, ripe pull-off strength >=2.0MPa of ripe/nitrile rubber of nitrile rubber；

6) it repairs

6a) brush coating：Prepared adhesive is brushed in internal insulation blemish surface position using hairbrush and is repaiied after cutting It mends with ripe film one side, hangs 10~30 minutes, then carry out brushing second time, then hang 5~after twenty minutes；

6b) patch：Repairing after cutting is carried out with ripe film according to the shape to match with blemish surface and repairing position Bonding, when bonding, are fixed from side, are pushed to the other side, and roller compacting discharge bubble is used after fixed；Most by multilayer repair Repairing fills up defective locations with ripe film after ensureing the cutting of repairing eventually,

After defective locations are filled, ripe film upper surface brush coating is repaired after the cutting of most last layer, while beyond cutting The ripe film boundaries 30mm of repairing afterwards, brush coating method is with step 6a), then upper layer repairing after cutting is covered with ripe film whole The surface of a defect mending position；

The surface that position 6c) is repaired in blemish surface lays one layer of release cloth, pressurization, curing and demolding.

Further, in the step 1), before measuring the thickness and area of internal insulation defect internal insulation is adjusted to repair Dust, the sundries mended environment temperature and relative humidity, clear up internal insulation blemish surface, wherein repairing environment temperature is 25 ± 10 DEG C, relative humidity≤75%.

Further, the step 2b) in, when slice, opens cooling water, cools down to the double roller of rubber mixing machine, and simultaneously Double roller roller temperature is monitored, if roller temperature is more than 60 DEG C, the easy roll banding of film, film is shunk greatly after slice, and size can not ensure, then stop Piece is further continued for slice after cooling down.

Further, the step 2c) in, flat plate mold depth of cavity is divided into four classes：I class depth be 0.5~0.6mm, II class depth is 1.0~1.1mm, III 1.5~1.6mm of class depth, IV 2.0~2.1mm of class depth.

Further, the step 2d) in, specific sulfidation is as follows：

EPDM internal insulation sulfuration process：80 ± 5 DEG C are warming up to equipment, after keeping the temperature 20~30min, is forced into 3 ~4MPa is continuously heating to 150 ± 5 DEG C, 80~90min of vulcanization time, is powered off after vulcanization time, random cooling, decompression；

Or butyronitrile internal insulation sulfuration process：80 ± 5 DEG C are warming up to equipment, after keeping the temperature 20~30min, is forced into 3 ~4MPa is continuously heating to 135 ± 5 DEG C, 80~90min of vulcanization time, is powered off after vulcanization time, random cooling, decompression.

Further, the step 2e) in, repairing film stock thickness and I~IV class flat plate mold depth of cavity one are a pair of It answers, the repairing that thickness is 0.5~0.65mm is that 0.8mm repairings are prepared with raw stock by thickness with ripe film, 0.8mm repairings life It is the flat plate mold of 0.5~0.6mm that film, which selects depth of cavity,；The repairing that thickness is 1.0~1.15mm is with ripe film by thickness It is prepared with raw stock for 1.2mm repairings, it is the flat plate mold of 1.0~1.1mm that 1.2mm repairing raw stocks, which select depth of cavity,； The repairing that thickness is 1.5~1.65mm is that 1.8mm repairings are prepared with raw stock by thickness with ripe film, 1.8mm repairing raw rubbers It is the flat plate mold of 1.5~1.6mm that piece, which selects depth of cavity,；The repairing that thickness is 2.0~2.15mm is by thickness with ripe film 2.5mm repairings are prepared with raw stock, and it is the flat plate mold of 2.0~2.1mm that 2.5mm repairing raw stocks, which select depth of cavity,.

Further, in the step 5), according to component A：B component=100：The proportioning of (3~6) prepares normal temperature cure 100~300g of adhesive WAGU-90.

Further, it in the step 5), is stirred evenly using glass bar after the completion of Adhesive, and prepared glue Stick uses in 3h, more than needing to prepare again after validity period.

Further, the step 6b) in, after the cutting of repairing repairing with ripe film overall thickness principle be：Ensureing to cut out When repairing is more than 0.1~0.5mm of depth of defect with ripe film overall thickness after cutting, reduces repair ripe film after cutting as far as possible The number of plies, it is specific as follows：

If when depth of defect h≤0.5mm, being repaired using the film of 0.5~0.65mm thickness；

If depth of defect 0.5<When h≤1.0mm, repaired using the film of 1.1~1.15mm thickness；

If depth of defect 1.0<When h≤1.5mm, repaired using the film of 1.5~1.65mm thickness；

If depth of defect 1.5<When h≤2.0mm, repaired using the film of 2.0~2.15mm thickness；

If depth of defect 2.0<When h≤2.5mm, the film of one layer of 2.0~2.15mm+, mono- layer of 0.5~0.65mm thickness is used It is repaired；

If depth of defect 2.5<When h≤3.0mm, the film of one layer of 2.0~2.15mm+, mono- layer of 1.0~1.15mm thickness is used It is repaired, is repaired afterwards using the film of three layers of 1.1~1.15mm thickness；

If depth of defect 3.0<When h≤3.5mm, carried out using one layer of 2.0~2.15mm+, mono- layer of 1.5~1.65mm film Repairing or three layers of 1.1~1.15mm+, mono- layer of 0.5~0.65mm thickness film carry out repair or；

If depth of defect 3.5<When h≤4.0mm, repaired using 2 layers of 2.0~2.15mm or 1 layer of 2.0~2.15mm+ The film of 2 layers of 1.1~1.15mm thickness carry out repairing or；

If depth of defect 4.0<When h≤4.5mm, repaired using 2 layers of 2.0~2.15mm+1 layer 0.5~0.65mm thickness, Or the film of 1 layer of 2.0~2.15mm+2 layer 1.1~1.15mm+1 layer 0.5~0.65mm thickness carry out repairing or；

If depth of defect 4.5<When h≤5.0mm, carry out repairing+1 layer of 1.1~1.15mm thickness using 2 layers of 2.0~2.15mm Film repaired, or repaired using the film of 5 layers of 1.1~1.15mm thickness.

Further, the step 6c) in, detailed process is as follows：

Pressurization：Cure under pressure is carried out to defective locations using vacuum bag method or sand pocket, is using vacuum bag method detailed process： It is covered along the trend of sealant in one week one circle sealant of bonding of film of repairing, then by vacuum film, simultaneously Vacuum tube is stretched into below film, and be bonded pipe is ensured into leakproofness with sealant；Vacuum tube and vaccum-pumping equipment phase Even, vaccum-pumping equipment is opened, guarantee pressure is -0.05MPa, is vacuumized；

Solidification：Normal temperature cure 24~36 hours or more under pressurised conditions；

Demoulding：Cleaning sand pocket cleans up release cloth, completes internal insulation repairing；Or vaccum-pumping equipment is closed, it takes out Vacuum tube, then film and sealant, release cloth are cleaned up, complete internal insulation repairing.

Compared with prior art, the present invention haing the following advantages：

1) ensure to repair solid engines internal insulation surface defect by using the mode of normal temperature cure, ensure The engine of internal insulation defect can continue normal use, solve because internal insulation defect causes engine can not normal use Or the problem of scrapping；

2) choose WAGU-90 adhesive, solve the problems, such as heat-insulating material room temperature adhesive strength for；

3) after repairing, cure in internal insulation surface-pressure, ensure the bonding matter between repair layer and internal insulation ontology Amount；

4) internal insulation thickness and bonding surface intensity after repairing meet in Solid Rocket Motor Fiber Composite Material Shell absolutely Thermosphere requirement, while ensureing the air-tightness and ablation property of fiber winding shell after repairing, it is less than suitable for depth of defect 5mm, defect area are less than 5000mm²Repairing.

Description of the drawings

Fig. 1 is internal insulation state photo figure after embodiment 1 is repaired；

Fig. 2 is internal insulation state photo figure after embodiment 2 is repaired.

Specific implementation mode

With reference to specific embodiment, the present invention is described in further detail, convenient for more clearly understanding the present invention, But they do not constitute the present invention and limit.

It is small that Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending of the present invention is suitable for depth of defect It is less than 5000mm in 5mm, defect area²Repairing.

Embodiment 1

1) it pre-processes

Internal insulation repairing environment temperature and relative humidity 1a) are adjusted, repairing environment temperature is 25 DEG C, relative humidity is 55%；

1b) clear up dust, the sundries of internal insulation blemish surface；

Plasticine 1c) is embedded in defective locations, then plasticine is taken out, measures the thickness and area of plasticine, measures knot Fruit is depth of defect and defect area, and depth of defect 1.4mm, defect area are 15mm × 180mm；

2) it prepares and repairs ripe film

It is 2a) thin logical：The roller spacing of rubber mixing machine is adjusted to 0.2~0.6m, EPDM green glue stock is carried out by rubber mixing machine Bao Tong, and thin logical number is 3~4 times；

2b) slice：Rubber mixing machine roller spacing is adjusted, is that 1.8mm and 1.2mm sizes carry out slice that multiple are made is pre- by thickness Repairing raw stock；Pay attention to：Cooling water is opened when slice, is cooled down to the double roller of rubber mixing machine, and monitors double roller roller temperature simultaneously, If roller temperature is more than 60 DEG C, stops slice, slice is further continued for after cooling down；

2c) cut-parts：The pre- repairing raw rubber for being respectively 1.2mm by pre- repairing raw stock and thickness that thickness is 1.8mm The thickness that piece cuts out 140mm × 200mm respectively is that the thickness of 1.8mm repairings raw stock and 140mm × 200mm are 1.2mm The thickness of 140mm × 200mm is that be put into depth of cavity with raw stock be 1.0~1.1mm for 1.2mm repairings by repairing raw stock Flat plate mold in, be that be put into depth of cavity with raw stock be 1.5~1.6mm for 1.8mm repairings by the thickness of 140mm × 200mm Flat plate mold in；

2d) vulcanize：By step 2c) in install the flat plate mold of repairing raw stock and be put into vulcanizer, in EPDM Heat insulation layer sulfuration process：80 ± 5 DEG C are warming up to equipment, after keeping the temperature 30min, 3~4MPa is forced into, is continuously heating to 150 ± 5 DEG C, vulcanization time 90min is powered off after vulcanization time, random cooling, decompression；

2e) depanning：It waits for flat plate mold temperature≤70 DEG C, opens flat plate mold, take out and repair ripe film in advance, go deburring A thickness 1.5mm is made and repairs ripe film and a ripe film of thickness 1.0mm repairings；

3) internal insulation defect processing

3a) polish：It is polished the internal insulation blemish surface that need to be repaired, is beaten using pneumatic grinding wheel or electric angle grinder Flour milling product is not less than 35mm × 220mm, and blemish surface polishes area more than blemish surface position and exceeds defect boundary 30mm, right It is polished using emery cloth at Defect Edge, while groove is polished to Defect Edge, ensure rounding off；

4) ripe Film processing is repaired

4a) repairing is polished with ripe film：Using pneumatic grinding wheel or electric angle grinder to the repairing ripe film two prepared Face is polished, while polishing groove with ripe film surrounding to repairing, bevelled edge 5~10mm of width, and thickness is at groove 0.4~0.6mm；

4b) cut：According to blemish surface area by thickness 1.5mm repairing with ripe film cut out a size be 15mm × The thickness 1.5mm of 180mm repairs ripe film after cutting, while carrying out mill slope with the boundary of ripe film one side to repairing after cutting Mouth processing, and thickness 1.0mm repairings are cut out into thickness 1.0mm of the area not less than 35mm × 220mm with ripe film and are cut out Ripe film is repaired after cutting, and is used for the covering of top layer's film；

4c) clean：Repairing is equal with ripe film after repairing ripe film and thickness 1.0mm cuttings after thickness 1.5mm is cut It is cleaned, and is dried with ethyl acetate or acetone；

5) match adhesive

According to component A：B component=100：4 proportioning, prepares cold setting adhesive WAGU-90 about 100g, and adhesive is matched It is stirred evenly using glass bar after the completion of system, and is used in three hours；

6) it repairs

6a) brush coating：Prepared adhesive is brushed in internal insulation blemish surface position and thickness 1.5mm using hairbrush Repairing ripe film one side, hangs 20 minutes after cutting, then brush second time, then hangs after ten minutes；

6b) patch：It is repaired with ripe film according to the shape and repairing to match with blemish surface after thickness 1.5mm is cut Position is bonded, and when bonding is fixed from side, is pushed to the other side, and roller compacting discharge bubble is used after fixed；And in thickness It spends after 1.5mm is cut and repairs ripe film upper surface brush coating, ripe film boundaries are repaired in brush coating face after being cut beyond thickness 1.5mm 30mm, brush coating method is with step 6a), it is repaired after then cutting thickness 1.0mm and covers entire defect mending position with ripe film The surface set；

6c) surface that position is repaired in blemish surface lays one layer of release cloth, for isolation of pressurizeing；It is specific as follows：

Pressurization：Cure under pressure is carried out to defective locations using 15kg sand pockets；

Demoulding：Cleaning sand pocket cleans up release cloth, that is, completes internal insulation repairing.

The present embodiment 1 carries out the internal insulation shear strength after internal insulation repairing and is more than 1.0MPa, and pull-off strength is more than 1.5MPa, layers cementing quality is good, under the examination of oxy-acetylene line ablation, does not occur the phenomenon that splitting, blistering.

The same period carries out EPDM internal insulation repairing using BD301 adhesive, and the tack of the adhesive is poor, room temperature Can have tack after hanging 4h or 80 DEG C of preliminary drying 2h, the heat insulation layer shear strength after repairing is 0.82MPa, and pull-off strength is 1.14MPa。

Embodiment 2

1) it pre-processes

Internal insulation repairing environment temperature and relative humidity 1a) are adjusted, repairing environment temperature is 30 DEG C, relative humidity is 65%；

1b) clear up dust, the sundries of internal insulation blemish surface；

Plasticine 1c) is embedded in defective locations, then plasticine is taken out, measures the thickness and area of plasticine, measures knot Fruit is depth of defect and defect area, and depth of defect 3.8mm, defect area are 30mm × 40mm；

2) it prepares and repairs ripe film

It is 2a) thin logical：The roller spacing of rubber mixing machine is adjusted to 0.2~0.6m, butyronitrile green glue stock carried out by rubber mixing machine it is thin logical, And thin logical number is 3~4 times；

2b) slice：Rubber mixing machine roller spacing is adjusted, is that 2.2mm and 1.2mm sizes carry out slice that multiple are made is pre- by thickness Repairing raw stock；Pay attention to：Cooling water is opened when slice, is cooled down to the double roller of rubber mixing machine, and monitors double roller roller temperature simultaneously, If roller temperature is more than 60 DEG C, stops slice, slice is further continued for after cooling down；

2c) cut-parts：The pre- repairing raw rubber for being respectively 1.2mm by pre- repairing raw stock and thickness that thickness is 2.2mm The thickness that piece cuts out 140mm × 200mm respectively is that the thickness of 2.2mm repairings raw stock and 140mm × 200mm are 1.2mm The thickness of 140mm × 200mm is that be put into depth of cavity with raw stock be 1.0~1.1mm for 1.2mm repairings by repairing raw stock Flat plate mold in, be that be put into depth of cavity with raw stock be 2.0~2.1mm for 2.2mm repairings by the thickness of 140mm × 200mm Flat plate mold in；

2d) vulcanize：By step 2c) in install the flat plate mold of repairing raw stock and be put into vulcanizer, it is adiabatic in butyronitrile Layer sulfuration process：80 ± 5 DEG C are warming up to equipment, after keeping the temperature 30min, 3~4MPa is forced into, is continuously heating to 135 ± 5 DEG C, Vulcanization time 90min is powered off after vulcanization time, random cooling, decompression；

2e) depanning：It waits for flat plate mold temperature≤70 DEG C, opens flat plate mold, take out and repair ripe film in advance, go deburring Required thickness 2.0mm is made and repairs ripe film and the ripe film of thickness 1.0mm repairings；

3) internal insulation defect processing

3a) polish：It is polished the internal insulation blemish surface that need to be repaired, is beaten using pneumatic grinding wheel or electric angle grinder Flour milling product is not less than 60mm × 70mm, and blemish surface polishes area more than blemish surface position and exceeds defect boundary 30mm, right It is polished using emery cloth at Defect Edge, while groove is polished to Defect Edge, ensure rounding off；

4) ripe Film processing is repaired

4b) cut：According to blemish surface area by thickness 2.0mm repairing with ripe film cut out two sizes be 30mm × The thickness 2.0mm of 40mm repairs ripe film after cutting, while carrying out mill slope with the boundary of ripe film one side to repairing after cutting Mouth processing, and thickness 1.0mm repairings are cut out with ripe film after the thickness 1.0mm that a size is 50mm × 60mm is cut and are repaiied Ripe film is mended, the covering of top layer's film is used for；

4c) clean：Repairing is equal with ripe film after repairing ripe film and thickness 1.0mm cuttings after thickness 2.0mm is cut It is cleaned, and is dried with ethyl acetate or acetone；

5) match adhesive

6) it repairs

6a) brush coating：Prepared adhesive is brushed in internal insulation blemish surface position and a thickness using hairbrush Repairing ripe film one side, hangs 10 minutes after 2.0mm is cut, then brush second time, then hangs after five minutes；

6b) patch：Will a thickness 2.0mm cut after repairing with ripe film according to the shape to match with blemish surface with Repairing position is bonded, and when bonding is fixed from side, is pushed to the other side, and roller compacting discharge bubble is used after fixed； Thickness 2.0mm repairs ripe film rosy clouds surface after repairing ripe film upper surface and second thickness 2.0mm cutting after cutting Brush coating stick, method is with step 6a), it hangs the ripe film of repairing after after ten minutes again cutting second thickness 2.0mm and is bonded It is repaired above ripe film after being cut to first thickness 2.0mm；

Ripe film lower surface brush coating is repaired after thickness 1.0mm is cut, and is repaired after second thickness 2.0mm is cut With the ripe equal brush coating in film upper surface, repairing ripe film boundaries 30mm, brush coating method after brush coating region is cut beyond thickness 2.0mm With step 6a), repair the surface that entire defect mending position is covered with ripe film after then cutting thickness 1.0mm；

Pressurization：Using vacuum bag method cure under pressure, detailed process is：It is greasy in the film one circle sealing of bonding in one week of repairing Son, then vacuum film is covered along the trend of sealant, while vacuum tube being stretched into below film, and it is greasy with sealing Son will be bonded pipe, ensure leakproofness；Vacuum tube is connected with vaccum-pumping equipment, open vaccum-pumping equipment, ensure pressure be- 0.05MPa is vacuumized；

Demoulding：Vaccum-pumping equipment is closed, vacuum tube is taken out, then film and sealant, release cloth are cleaned up, that is, completes Internal insulation is repaired.

The adiabatic shear strength layer by layer that the present embodiment 1 carries out after internal insulation repairing is more than 1.0MPa, and pull-off strength is more than 1.5MPa, layers cementing quality is good, under the examination of oxy-acetylene line ablation, does not occur the phenomenon that splitting, blistering.

Claims

1. a kind of Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending, it is characterised in that：The cold bonding Method for repairing and mending includes the following steps：

1) it pre-processes

Measure the thickness and area of internal insulation defect；

2) it prepares and repairs ripe film

It is 2a) thin logical：The roller spacing of rubber mixing machine is adjusted to 0.2~0.6m, heat-insulating material green glue stock carried out by rubber mixing machine it is thin logical, And thin logical number is 3~4 times；What heat-insulating material green glue stock was selected is heat-insulating material life identical with engine fiber winding shell Sizing material；

2b) slice：Rubber mixing machine roller spacing is adjusted, carrying out slice by required thickness size is made the different pre- repairing of multiple thickness Use raw stock；

2c) cut-parts：The different pre- repairing of thickness is cut out into thickness of corresponding size not with raw stock by the size of flat plate mold Same repairing raw stock, the different repairing of thickness is respectively put into raw stock in the flat plate mold of corresponding depth of cavity；

2e) depanning：It waits for flat plate mold temperature≤70 DEG C, opens flat plate mold, take out and repair ripe film in advance, deburring is gone to be made The ripe film of the repairing of different-thickness；

3) internal insulation defect processing

3a) polish：It polishes the internal insulation blemish surface that need to be repaired, blemish surface polishes area more than blemish surface position Defect boundary 30mm is set and exceeded, for polishing using emery cloth at Defect Edge, while groove is polished to Defect Edge；

4) ripe Film processing is repaired

4b) cut：Ripe film is repaired after cutting out the cutting of correspondingly-sized according to blemish surface area, while to being repaiied after cutting It mends and carries out mill groove processing with the boundary of ripe film one side, and it is to be cut out no more than the ripe film of the repairing of 1.0mm to select a thickness It cuts bigger 30mm than blemish surface area²Cutting after upper layer repair ripe film, for top layer's film covering；

4c) clean：After repairing ripe film after cutting and cutting upper layer repairing with ripe film with ethyl acetate or acetone into Row cleaning, and dry；

5) match adhesive

Prepare cold setting adhesive WAGU-90；

6) it repairs

6a) brush coating：Prepared adhesive is brushed in internal insulation blemish surface position and repaired after cutting using hairbrush and is used Ripe film one side, hangs 10~30 minutes, then brush second time, then hang 5~after twenty minutes；

6b) patch：Will after cutting repairing with ripe film according to the shape to match with blemish surface with repair position carry out it is be bonded, It fixes from side when bonding, is pushed to the other side, roller compacting discharge bubble is used after fixed；Finally ensured by multilayer repair Repairing fills up defective locations with ripe film after the cutting of repairing,

After defective locations are filled, ripe film upper surface brush coating is repaired after the cutting of most last layer, while being repaiied after exceeding cutting The ripe film boundaries 30mm of benefit, brush coating method is with step 6a), upper layer repairing after cutting is then covered into entire lack with ripe film Fall into the surface of repairing position；

2. Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending according to claim 1, feature It is：In the step 1), measure internal insulation defect thickness and area before adjust internal insulation repairing environment temperature and Relative humidity, dust, the sundries for clearing up internal insulation blemish surface, wherein repairing environment temperature is 25 ± 10 DEG C, relative humidity ≤ 75%.

3. Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending according to claim 1, feature It is：The step 2b) in, when slice, opens cooling water, cools down to the double roller of rubber mixing machine, and monitor double roller roller simultaneously Temperature stops slice, slice is further continued for after cooling down if roller temperature is more than 60 DEG C.

4. Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending according to claim 1, feature It is：The step 2c) in, flat plate mold depth of cavity is divided into four classes：I class depth is 0.5~0.6mm, II class depth is 1.0 ~1.1mm, III 1.5~1.6mm of class depth, IV 2.0~2.1mm of class depth.

5. Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending according to claim 1, feature It is：The step 2d) in, specific sulfidation is as follows：

EPDM internal insulation sulfuration process：It is warming up to 80 ± 5 DEG C with equipment, after keeping the temperature 20~30min, it is forced into 3~ 4MPa is continuously heating to 150 ± 5 DEG C, 80~90min of vulcanization time, is powered off after vulcanization time, random cooling, decompression；

Or butyronitrile internal insulation sulfuration process：It is warming up to 80 ± 5 DEG C with equipment, after keeping the temperature 20~30min, it is forced into 3~ 4MPa is continuously heating to 135 ± 5 DEG C, 80~90min of vulcanization time, is powered off after vulcanization time, random cooling, decompression.

6. Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending according to claim 1, feature It is：The step 2e) in, repairing film stock thickness and I~IV class flat plate mold depth of cavity correspond, thickness 0.5 The repairing of~0.65mm is that 0.8mm repairings are prepared with raw stock by thickness with ripe film, and 0.8mm repairings select cavity with raw stock Depth is the flat plate mold of 0.5~0.6mm；The repairing that thickness is 1.0~1.15mm is that 1.2mm repairings are used by thickness with ripe film Prepared by raw stock, it is the flat plate mold of 1.0~1.1mm that 1.2mm repairing raw stocks, which select depth of cavity,；Thickness be 1.5~ The repairing of 1.65mm is that 1.8mm repairings are prepared with raw stock by thickness with ripe film, and 1.8mm repairings select cavity deep with raw stock Degree is the flat plate mold of 1.5~1.6mm；The repairing that thickness is 2.0~2.15mm is 2.5mm repairings life by thickness with ripe film Prepared by film, it is the flat plate mold of 2.0~2.1mm that 2.5mm repairing raw stocks, which select depth of cavity,.

7. Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending according to claim 1, feature It is：In the step 5), according to component A：B component=100：The proportioning of (3~6) prepares cold setting adhesive WAGU-90 100~300g.

8. Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending according to claim 1, feature It is：In the step 5), stirred evenly using glass bar after the completion of Adhesive, and prepared adhesive makes in 3h With more than needing to prepare again after validity period.

9. Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending according to claim 1, feature It is：The step 6b) in, after the cutting of repairing repairing with ripe film overall thickness principle be：It is repaired with ripe after ensureing to cut When film overall thickness is more than 0.1~0.5mm of depth of defect, the number of plies that ripe film is repaired after cutting is reduced as far as possible, specifically It is as follows：

If depth of defect 2.0<When h≤2.5mm, carried out using the film of one layer of 2.0~2.15mm+, mono- layer of 0.5~0.65mm thickness Repairing；

If depth of defect 2.5<When h≤3.0mm, carried out using the film of one layer of 2.0~2.15mm+, mono- layer of 1.0~1.15mm thickness Repairing, or repaired using the film of three layers of 1.1~1.15mm thickness；

If depth of defect 3.0<When h≤3.5mm, repaired using one layer of 2.0~2.15mm+, mono- layer of 1.5~1.65mm film, Or the film of three layers of 1.1~1.15mm+, mono- layer of 0.5~0.65mm thickness carry out repairing or；

If depth of defect 3.5<When h≤4.0mm, repaired using 2 layers of 2.0~2.15mm or 1 layer 2.0~2.15mm+2 layers The film of 1.1~1.15mm thickness carry out repairing or；

If depth of defect 4.0<When h≤4.5mm, repaired using 2 layers of 2.0~2.15mm+1 layer 0.5~0.65mm thickness or 1 Layer 2.0~2.15mm+2 layer 1.1~1.15mm+1 layer 0.5~0.65mm thickness film carry out repair or；

If depth of defect 4.5<When h≤5.0mm, using 2 layers of 2.0~2.15mm repair the glue of+1 layer of 1.1~1.15mm thickness Piece is repaired, or is repaired using the film of 5 layers of 1.1~1.15mm thickness.

10. Solid Rocket Motor Fiber Composite Material Shell internal insulation cold bonding method for repairing and mending according to claim 1, feature It is：The step 6c) in, detailed process is as follows：

Pressurization：Cure under pressure is carried out to defective locations using vacuum bag method or sand pocket, is using vacuum bag method detailed process：It is repairing One week one circle sealant of bonding of film of benefit, then vacuum film is covered along the trend of sealant, while will be true Blank pipe stretches into below film, and be bonded pipe is ensured leakproofness with sealant；Vacuum tube is connected with vaccum-pumping equipment, beats Vaccum-pumping equipment is opened, guarantee pressure is -0.05MPa, is vacuumized；

Demoulding：Cleaning sand pocket cleans up release cloth, completes internal insulation repairing；Or vaccum-pumping equipment is closed, take out vacuum Pipe, then film and sealant, release cloth are cleaned up, complete internal insulation repairing.