CN108219376A - A kind of PMI foams bend pipe core material and its forming method - Google Patents
A kind of PMI foams bend pipe core material and its forming method Download PDFInfo
- Publication number
- CN108219376A CN108219376A CN201810008664.0A CN201810008664A CN108219376A CN 108219376 A CN108219376 A CN 108219376A CN 201810008664 A CN201810008664 A CN 201810008664A CN 108219376 A CN108219376 A CN 108219376A
- Authority
- CN
- China
- Prior art keywords
- bend pipe
- pmi
- straight tube
- core material
- pipe core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011162 core material Substances 0.000 title claims abstract description 48
- 229920007790 polymethacrylimide foam Polymers 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000003822 epoxy resin Substances 0.000 claims abstract description 9
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 9
- 239000011521 glass Substances 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- 238000005520 cutting process Methods 0.000 claims description 20
- 238000005452 bending Methods 0.000 claims description 11
- 239000003292 glue Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000002562 thickening agent Substances 0.000 claims description 4
- 239000006210 lotion Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 10
- 239000006260 foam Substances 0.000 abstract description 7
- 238000003801 milling Methods 0.000 abstract description 3
- 238000007493 shaping process Methods 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 description 6
- 238000005498 polishing Methods 0.000 description 4
- 229920006335 epoxy glue Polymers 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920006305 unsaturated polyester Polymers 0.000 description 2
- 102000010970 Connexin Human genes 0.000 description 1
- 108050001175 Connexin Proteins 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 210000003976 gap junction Anatomy 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011806 microball Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/24—Homopolymers or copolymers of amides or imides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/18—Spheres
- C08L2205/20—Hollow spheres
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Thermal Insulation (AREA)
Abstract
The invention discloses a kind of PMI foams bend pipe core material and its forming methods, belong to foam core material field shaping technique.Then the PMI foams bend pipe core material forming method is bent to required angle, then inserted in gap with the mixing paste that epoxy resin, curing agent and hollow glass micropearl are formed using gap, is made after cured by being cut into gap in straight tube PMI foam core materials both sides.Process of the present invention is simple, and operability is strong, does not need to process equipment (milling machine) the just energy machine-shaping by profession, has saved a large amount of manpower and materials, reduced the processing cost of core material.
Description
Technical field
The present invention relates to foam core material field shaping techniques, and in particular to a kind of PMI foams bend pipe core material and its molding side
Method.
Background technology
Polymethacrylimide (PMI) foam is common core material in composite product, it is often necessary to is processed into each
Kind shape.The forming easy to process of straight line block foam, and curve bend pipe class shape is then difficult to processing of polishing, and is often required to expend a large amount of
Manpower and materials.
Invention content
The purpose of the present invention is to provide a kind of PMI foams bend pipe core material and its forming method, to solve existing molding skill
Art complex procedures, it is impossible to the problem of simply and rapidly processing bend pipe class PMI foam core materials, especially in the item for not having milling machine
Under part.
The technical solution that the present invention solves above-mentioned technical problem is as follows：
A kind of PMI foams bend pipe core material forming method, including：
(1) the PMI foam core materials for being processed into straight tube-like are taken, are crossed at the position for needing to be bent along the circumferencial direction of straight tube,
Plurality of parallel lines are drawn by the interval of 2-5mm, and the parallel lines of both sides are interspersed in the both sides of straight tube, then, along straight tube
The parallel lines of both sides carry out cutting and form gap, and when cutting does not cut off per side；
(2) the straight tube PMI foam core materials of well cutting are placed in plane, the gap formed using cutting is to the side of straight tube
It is bent to required angle and fixation；
(3) by epoxy resin and curing agent according to (2.5-3.5):1 weight ratio mixing, is made mixed glue solution, by described in
Mixed glue solution is with hollow glass micropearl or thickener according to (6.5-7.5):1 weight ratio mixing, is made mixing paste, by described in
Mixing paste is inserted in gap after bending, and be then heating and curing 2-3h at 130-140 DEG C, and PMI foam bend pipe core materials are made.
The present invention, using the method for cutting, cuts the part that needs are bent on straight tube PMI foam core materials easy to process
Gap is cut out, changes to form required bending angle by the space size in gap, then be inserted in gap added with asphalt mixtures modified by epoxy resin
The mixing paste of fat and hollow glass micro-ball, finishing of polishing after curing can obtain.Entire forming process very simple and
It operates also very convenient, can be completed independent of professional process equipment, greatly save manpower, material resources and financial resources.And
And under the design concept introduction of the present invention so that the molding with the special-shaped core material of multistage crooked radian is also possibly realized, and is dropped
Low production difficulty, and process is convenient, simple.
In cutting, the present invention is cut in the both sides of straight tube PMI foam core materials, this have the advantage that, because of bubble
Foam material itself is harder, if only cutting side, uncut curving difficulty can be caused to increase or even can not bend to institute
Angle is needed, thus the present invention cuts both sides so that the one side of indent is pressurized, and the one side tension of evagination can avoid
Because foam is harder, deflection situation that is small, and can not being bent.Moreover, the present invention, in cutting, the gap of both sides is interlaced,
It is independent of each other, ensure that integrally-built continuity and stability.
The present invention is cheap and easy to get while of the invention also micro- by adding hollow glass using epoxy resin as filler
Pearl provides the viscosity of mixed glue solution, so that glue in solidification process be avoided to flow away.The hollow glass micropearl of the present invention also may be used
To be replaced with thickener.
Further, in preferred embodiments of the present invention, above-mentioned forming method further includes：
(4) the PMI foam bend pipe core materials after curing are polished.
Further, in preferred embodiments of the present invention, in step (2), the bending angle of straight tube PMI foam core materials
Not higher than 90 °.
The PMI foam bend pipe core materials that above-mentioned forming method is prepared.
The invention has the advantages that：
Process of the present invention is simple, and operability is strong, does not need to just process by the process equipment (milling machine) of profession
Molding, has saved a large amount of manpower and materials, has reduced the processing cost of core material.
The leftover pieces that the present invention generates are few, can save lot of materials, reduce cost of material.
The foam core material that the present invention processes is an overall structure, and appearance is very beautiful.
Description of the drawings
Fig. 1 is the structure diagram of scribed straight tube PMI foam core materials；
Fig. 2 is the photo for cutting PMI foam core materials after bending；
Fig. 3 is the photo of cured polishing PMI foams bend pipe core material after molding.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.The person that is not specified actual conditions in embodiment, the item suggested according to normal condition or manufacturer
Part carries out.Reagents or instruments used without specified manufacturer is the conventional products that can be obtained by commercially available purchase.
Embodiment 1
The PMI foam bend pipe core material forming methods of the present embodiment, including：
(1) the PMI foam core materials for being processed into straight tube-like are taken, are crossed at the position for needing to be bent along the circumferencial direction of straight tube,
Plurality of parallel lines are drawn by the interval of 2-5mm, and the parallel lines of both sides are interspersed in the both sides of straight tube, then, along straight tube
The parallel lines of both sides carry out cutting and form gap, and when cutting does not cut off per side.
As shown in Figure 1, along the circumferential direction crossing respectively in the both sides of straight tube PMI foam core materials, the line of both sides is interlaced
It is distributed, 2-5mm is spaced between two adjacent cutting lines of homonymy.Those skilled in the art can according to crooked radian size into
Row determines, such as 2mm, and suitable for the smaller situation of crooked radian, either 5mm is suitable for the larger situation of crooked radian or two
3mm, 4mm between person.The range of 2-5mm is spaced between cutting line, can both ensure there are enough curved spaces, be unlikely to
Angle needed for can not being bent to due to interval is too small, while also cause very much material for repairing dosage excessive greatly as because of interval, and
So that the structural soundness of entire straight tube is affected.
(2) the straight tube PMI foam core materials of well cutting are placed in plane, the gap formed using cutting is to the side of straight tube
It is bent to required angle and fixation.The bending angle of straight tube PMI foam core materials is not higher than 90 °.During more than 90 °, gap width
It is larger, it is easy to cause that gap junction is fragile and easy fracture.Meaning of the embodiment of the present invention is not higher than 90 °, it is clear that is greater than 0 °
, it is adjusted accordingly in the range of 0 ° -90 ° (not including 0 °) according to actual conditions.
As shown in Fig. 2, the straight tube PMI foam core materials after cutting draw close at its both ends to centre, required angle is bent to, so
After fix.Required angle is bigger, and the width in gap is bigger.
(3) by epoxy resin and curing agent according to 3:1 weight ratio mixing, is made mixed glue solution, by the mixed glue solution
With hollow glass micropearl according to 7:1 weight ratio mixing, is made mixing paste, the mixing paste is inserted gap after bending
In, be then heating and curing 2.5h at 135 DEG C, and PMI foam bend pipe core materials are made.
(4) the PMI foam bend pipe core materials after curing are polished.
By polishing, overlap and the lotion overflowed are corrected so that surface is smooth.PMI foam pipe bending mandrels after machining
Material is as shown in Figure 3.
Embodiment 2
The present embodiment 1 and embodiment 1 are specific as follows difference lies in step (3) is different：
(3) by epoxy resin and curing agent according to 2.5:1 weight ratio mixing, is made mixed glue solution, by the epoxy glue
Liquid is with thickener according to 6.5:1 weight ratio mixing, is made mixing paste, the mixing paste is inserted gap after bending
In, be then heating and curing 3h at 130 DEG C, and PMI foam bend pipe core materials are made.
Embodiment 3
The present embodiment 1 and embodiment 1 are specific as follows difference lies in step (3) is different：
(3) by epoxy resin and curing agent according to 3.5:1 weight ratio mixing, is made mixed glue solution, by the epoxy glue
Liquid is with hollow glass micropearl according to 7.5:1 weight ratio mixing, is made mixing paste, the mixing paste is inserted after bending
In gap, be then heating and curing 2h at 140 DEG C, and PMI foam bend pipe core materials are made.
Under the design concept introduction of the present invention, those skilled in the art can the present invention is applied to other macromolecule materials
In the bend pipe core material molding of material, of the invention includes but not limited to PMI foams, such as may be used also for the molding material of bend pipe core material
To be PVC foams.Meanwhile epoxy resin used in the embodiment of the present invention can also be other resins, such as unsaturated polyester (UP) tree
Fat.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of PMI foams bend pipe core material forming method, which is characterized in that including：
(1) the PMI foam core materials for being processed into straight tube-like are taken, are crossed at the position for needing to be bent along the circumferencial direction of straight tube, straight
The both sides of pipe draw plurality of parallel lines by the interval of 2-5mm, and the parallel lines of both sides are interspersed, then, along straight tube both sides
Parallel lines carry out cutting and form gap, when cutting, does not cut off per side；
(2) the straight tube PMI foam core materials of well cutting are placed in plane, using cutting formed curving from gap to straight tube
To required angle and fixation；
(3) by epoxy resin and curing agent according to (2.5-3.5):1 weight ratio mixing, is made mixed glue solution, by the mixing
Glue is with hollow glass micropearl or thickener according to (6.5-7.5):1 weight ratio mixing, is made mixing paste, by the mixing
Lotion is inserted in gap after bending, and be then heating and curing 2-3h at 130-140 DEG C, and PMI foam bend pipe core materials are made.
2. PMI foams bend pipe core material forming method according to claim 1, which is characterized in that the forming method also wraps
It includes：
(4) the PMI foam bend pipe core materials after curing are polished.
3. PMI foams bend pipe core material forming method according to claim 1, which is characterized in that in step (2), straight tube
The bending angle of PMI foam core materials is not higher than 90 °.
4. the PMI foam bend pipe core materials that claim 1-3 any one of them forming methods are prepared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810008664.0A CN108219376B (en) | 2018-01-04 | 2018-01-04 | PMI foam elbow core material and forming method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810008664.0A CN108219376B (en) | 2018-01-04 | 2018-01-04 | PMI foam elbow core material and forming method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108219376A true CN108219376A (en) | 2018-06-29 |
| CN108219376B CN108219376B (en) | 2020-04-28 |
Family
ID=62645234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810008664.0A Expired - Fee Related CN108219376B (en) | 2018-01-04 | 2018-01-04 | PMI foam elbow core material and forming method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108219376B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111593809A (en) * | 2020-04-09 | 2020-08-28 | 中国水利水电第十四工程局有限公司 | Convenient preformed hole forming template |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107353743A (en) * | 2017-07-12 | 2017-11-17 | 寿光市鸿达化工有限公司 | A kind of anticorrosion S bend pipe road |
-
2018
- 2018-01-04 CN CN201810008664.0A patent/CN108219376B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107353743A (en) * | 2017-07-12 | 2017-11-17 | 寿光市鸿达化工有限公司 | A kind of anticorrosion S bend pipe road |
Non-Patent Citations (1)
| Title |
|---|
| 王德志等: ""PMI 泡沫材料拼接用低密度糊状胶粘剂的研制"", 《中国胶粘剂》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111593809A (en) * | 2020-04-09 | 2020-08-28 | 中国水利水电第十四工程局有限公司 | Convenient preformed hole forming template |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108219376B (en) | 2020-04-28 |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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Granted publication date: 20200428 |