CN213272005U - PVDF injection molding - Google Patents
PVDF injection molding Download PDFInfo
- Publication number
- CN213272005U CN213272005U CN202021310858.5U CN202021310858U CN213272005U CN 213272005 U CN213272005 U CN 213272005U CN 202021310858 U CN202021310858 U CN 202021310858U CN 213272005 U CN213272005 U CN 213272005U
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- China
- Prior art keywords
- injection molding
- pvdf
- straight
- part body
- tubular
- 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.)
- Expired - Fee Related
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 70
- 239000002033 PVDF binder Substances 0.000 title claims abstract description 56
- 229920002981 polyvinylidene fluoride Polymers 0.000 title claims abstract description 56
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 239000000126 substance Substances 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 6
- 238000000465 moulding Methods 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 238000001721 transfer moulding Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229940113088 dimethylacetamide Drugs 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a PVDF injection molding, which comprises an injection molding body and an anti-skid structure arranged on the injection molding body, wherein the injection molding body is also provided with a concave-convex structure which is convenient for storage and stacking or convenient for transportation and stacking; its tip of injection molding body still is equipped with the connection structure of vertical stack of being convenient for. The utility model adopts polyvinylidene fluoride, and the pipe fitting made by injection molding has good chemical resistance, processability, fatigue resistance and creep property; and the utility model discloses to the direct pipe of PVDF, can be more stable when storing and stacking or transporting and stack, can also select according to the condition of warehouse or transport vechicle is nimble, can vertically stack direct pipe, make the utility model discloses the suitability of storage, transportation is wider, can be suitable for different situation.
Description
Technical Field
The utility model relates to a PVDF injection molding.
Background
The PVDF polyvinylidene fluoride is semitransparent or white powder or particles in appearance, the molecular chains are closely arranged, the PVDF polyvinylidene fluoride has strong hydrogen bonds, the oxygen index is 46 percent, the PVDF polyvinylidene fluoride is non-combustible, the crystallinity is 65 to 78 percent, the density is 1.77 to 1.80g/cm3, the melting point is 172 ℃, the thermal deformation temperature is 112 to 145 ℃, and the long-term use temperature is-40 to 150 ℃.
PVDF applications are mainly focused in petrochemical, electronics, electrical and fluorocarbon coatings, and are one of the best materials for pumps, valves, pipes, plumbing fittings, storage tanks and heat exchangers for petrochemical plant fluid handling systems as a whole or lining due to its good chemical resistance, processability, and fatigue and creep resistance. PVDF has good chemical stability and electrical insulation performance, so that the manufactured equipment can meet the TOCS and flame retardant requirements, and is widely applied to the storage and transportation of high-purity chemicals in the semiconductor industry. PVDF is one of the main raw materials of fluorocarbon coatings, the fluorocarbon coatings prepared by using PVDF as a raw material have been developed to the sixth generation, and since PVDF resin has super-strong weather resistance, the PVDF resin can be used outdoors for a long time without maintenance, and the PVDF resin is widely applied to power stations, airports, expressways, high-rise buildings and the like. In addition, the PVDF resin can be blended and modified with other resins, such as PVDF and ABS resin to obtain a composite material, and the composite material is widely applied to buildings, automobile decorations, home appliance shells and the like.
PVDF can be processed by common thermoplastic plastic processing methods, such as extrusion molding, injection molding, pouring, molding and transfer molding (1) the extruded PVDF with high molecular weight has good melt strength, can be processed into films, sheets, tubes, rods, power supply insulating sleeves and the like by the extrusion molding method, and has the temperature controlled between 210 and 290 ℃ and the molding temperature controlled between 180 and 240 ℃ according to the used equipment and the shape of a processed product, and the temperature must be strictly controlled not to exceed the melting temperature for a long time. The extrusion molding equipment can adopt a common screw extruder.
(2) The injection molding low molecular weight PVDF has high melt flow rate, can be processed by a processing method of injection molding, generally adopts a general injection molding machine, but a charging barrel plunger, a nozzle and the like must adopt corrosion-resistant Ni-based alloy.
(3) The casting molding is to use dimethyl acetamide as a solvent, prepare PVDF into a solution with a solid content of 20%, tape-cast the solution on an aluminum foil, melt the solution at 205-315 ℃, and rapidly cool the solution with water to prepare a continuous strong membrane with a thickness of 0.05-0.075 mm,
(4) In molding, the PVDF granules are generally preheated in an oven or a preheating furnace at 215-235 ℃, then the preheated material is added into a preheated mold at 180-195 ℃, and pressure is applied and maintained at 14MPa for a period of time determined by the time required for melting and flowing. The thick-wall product can be demoulded only after being maintained and cooled to below 90 ℃ so as to avoid the product from generating vacuum bubbles or deforming.
(5) Generally, transfer molding is performed by plasticizing with an extruder, conveying the material into a storage tank, injecting the material in the storage tank into a mold through a plunger pump, and maintaining the pressure and cooling. Whether molding or transfer molding, is mainly used for producing products with larger volume and thicker wall thickness.
(6) Other processing methods can also adopt the processing technologies of dipping, coextrusion, conformity and the like for processing PVDF.
PVDF injection molding part products mainly comprise: PVDF90 degree elbow, PVDF positive tee, PVDF straight-through pipe, PVDF female screw joint, PVDF reducing reducer, PVDF flange, PVDF45 degree elbow, PVDF reducing tee, PVDF blind flange, PVDF loose joint, PVDF pipe fitting. For the straight-through pipe, the stacking operation of operators is troublesome during storage at present, and the straight-through pipe is tubular, has smooth surface and is not easy to stack.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide a PVDF injection molding piece, which adopts polyvinylidene fluoride, and the injection molded pipe fitting has good chemical resistance, processability, fatigue resistance and creep resistance; and the utility model discloses to the direct pipe of PVDF, can be more stable when storing and stacking or transporting and stack, can also select according to the condition of warehouse or transport vechicle is nimble, can vertically stack direct pipe, make the utility model discloses the suitability of storage, transportation is wider, can be suitable for different situation.
In order to achieve the purpose, the technical scheme of the utility model is to design a PVDF injection molding piece, which comprises an injection molding piece body and an anti-skid structure arranged on the injection molding piece body, wherein the injection molding piece body is also provided with a concave-convex structure which is convenient for storage and stacking or convenient for transportation and stacking; its tip of injection molding body still is equipped with the connection structure of vertical stack of being convenient for.
A further technical scheme is that the anti-slip structure is integrally arranged on anti-slip lines on the injection molding body, and the anti-slip lines are arranged on the outer surface of the injection molding body in a protruding mode. Therefore, the anti-skid lines of the adjacent injection molding part bodies can be arranged oppositely when being stacked or stacked, and the injection molding parts are stacked easily due to the anti-skid lines.
A further technical scheme is that the concave-convex structure is a concave pit and a convex bump which are arranged on the injection molding body in pairs, and the concave pit and the convex bump are matched and arranged.
The further technical scheme is that the injection molding part body is in a straight-through tubular shape or a three-way tubular shape or a 90-degree elbow shape or a flange shape.
The further technical proposal is that the injection molding body is in a straight-through tubular shape; the connecting structure comprises a connecting part which is integrally arranged at the end part of the straight-through tubular injection molding part body, the connecting part is in a curved surface shape, a round hole is arranged in the middle of the connecting part, and a tying rope used for connecting two connected straight-through tubular injection molding part bodies together is matched with the round hole; a rectangular groove or a rectangular insert block is integrally arranged at the other end part of the straight-through tubular injection molding part body, and the rectangular insert block is matched with the rectangular groove; the rectangular insert block is connected with the straight-through tubular injection molding part body through a connecting plate protruding out of the outer surface of the straight-through tubular injection molding part body. For the direct-through pipe injection-molded PVDF, the positions of the pits and the bulges form an included angle of 120 degrees, so that the abutting positions of the PVDF direct-through pipes which are just adjacent to each other during stacking are in accordance with the matching of the pits and the bulges, and the stacking is more convenient. And the setting of rectangle inserted block and rectangular channel makes on adjacent injection molding top detain the rope system knot through the system and connect the back, can prevent that the injection molding from "opening" in the bottom (the injection molding bottom is kept away from each other promptly), when vertical storage is stacked, earlier with adjacent injection molding through the rectangle inserted block and the cooperation of rectangular channel of bottom for the injection molding is inserted in the bottom cooperation and is established the connection, then with detaining the rope with the system and detain injection molding top together, vertical stacking has been realized, satisfy more in service behavior.
The utility model has the advantages and the beneficial effects that: the polyvinylidene fluoride is adopted, and the pipe fitting formed by injection molding has good chemical resistance, processability, fatigue resistance and creep property; and the utility model discloses to the direct pipe of PVDF, can be more stable when storing and stacking or transporting and stack, can also select according to the condition of warehouse or transport vechicle is nimble, can vertically stack direct pipe, make the utility model discloses the suitability of storage, transportation is wider, can be suitable for different situation. For the direct-through pipe injection-molded PVDF, the positions of the pits and the bulges form an included angle of 120 degrees, so that the abutting positions of the PVDF direct-through pipes which are just adjacent to each other during stacking are in accordance with the matching of the pits and the bulges, and the stacking is more convenient. And the setting of rectangle inserted block and rectangular channel makes on adjacent injection molding top detain the rope system knot through the system and connect the back, can prevent that the injection molding from "opening" in the bottom (the injection molding bottom is kept away from each other promptly), when vertical storage is stacked, earlier with adjacent injection molding through the rectangle inserted block and the cooperation of rectangular channel of bottom for the injection molding is inserted in the bottom cooperation and is established the connection, then with detaining the rope with the system and detain injection molding top together, vertical stacking has been realized, satisfy more in service behavior.
Drawings
FIG. 1 is a schematic view of a 90 degree elbow of a PVDF injection molded part of the present invention;
FIG. 2 is a schematic view of a PVDF injection molding straight-through pipe stack of the present invention;
FIG. 3 is an exploded schematic view of FIG. 2;
FIG. 4 is a schematic view of two adjacent straight-through pipes of the present invention before being vertically stacked;
FIG. 5 is a schematic illustration of FIG. 4 after vertical stacking;
FIG. 6 is a side view of the connection of FIG. 4;
FIG. 7 is a schematic view of the rectangular slot of FIG. 4;
fig. 8 is a schematic view of the rectangular insert and connecting portion portions of fig. 4.
In the figure: 1. an injection molded part body; 2. anti-skid lines; 3. a pit; 4. a protrusion; 5. a connecting portion; 6. a circular hole; 7. tying a buckling rope; 8. a rectangular groove; 9. a rectangular insert block; 10. a connecting plate.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1 to 8 (for convenience of illustration, fig. 2 only shows three straight-through pipes), the present invention is a PVDF injection molding, which includes an injection molding body 1 and an anti-slip structure disposed on the injection molding body 1, wherein the injection molding body 1 is further provided with a concave-convex structure for easy storage and stacking or easy transportation and stacking; its tip of injection molding body 1 still is equipped with the connection structure of vertical stack of being convenient for. Antiskid line 2 that antiskid structure as an organic whole set up on injection molding body 1, and antiskid line 2 salient sets up the surface at injection molding body 1. Concave-convex structure is for setting up pit 3 and arch 4 on injection molding body 1 in pairs, and pit 3 sets up with 4 adaptations of arch. The injection molding body 1 is in a straight-through tubular shape, a three-way tubular shape, a 90-degree elbow shape or a flange shape. The injection molding body 1 is in a straight-through tubular shape; the connecting structure comprises a connecting part 5 integrally arranged at the end part of the straight-through tubular injection molding part body 1, the connecting part 5 is in a curved surface shape, a round hole 6 is arranged in the middle of the connecting part, and a tying rope 7 for connecting two connected straight-through tubular injection molding part bodies 1 together is arranged in a matching way with the round hole 6; a rectangular groove 8 or a rectangular insert block 9 is integrally arranged at the other end part of the straight-through tubular injection molding part body 1, and the rectangular insert block 9 and the rectangular groove 8 are arranged in a matched mode (the more preferable scheme is that the rectangular insert block and the rectangular groove are made of non-PVDF materials and made of softer plastic materials, so that the rectangular insert block can be inserted into the rectangular groove after the concave pits and the protrusions are matched by the two connected injection molding parts); the rectangular insert 9 is connected to the straight-through tubular injection molded part body 1 by means of a connecting plate 10 protruding over the outer surface of the straight-through tubular injection molded part body 1.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A PVDF injection molding part is characterized by comprising an injection molding part body and an anti-skidding structure arranged on the injection molding part body, wherein the injection molding part body is also provided with a concave-convex structure which is convenient to store and stack or convenient to transport and stack; its tip of injection molding body still is equipped with the connection structure of vertical stack of being convenient for.
2. The PVDF injection molded part as claimed in claim 1, wherein the anti-slip structure is an anti-slip pattern integrally formed on the injection molded part body, and the anti-slip pattern is protrusively formed on the outer surface of the injection molded part body.
3. The PVDF injection molded part as claimed in claim 2, wherein the concavo-convex structure is a pair of concave pits and convex pits arranged on the injection molded part body, and the concave pits and the convex pits are arranged in a matching manner.
4. PVDF injection molded part according to claim 3, characterized in that the injection molded part body is in the form of a straight-through tube or a tee tube or a 90 ° elbow or a flange.
5. PVDF injection molded part according to claim 4, characterized in that the injection molded part body is straight-through tubular; the connecting structure comprises a connecting part which is integrally arranged at the end part of the straight-through tubular injection molding part body, the connecting part is in a curved surface shape, a round hole is arranged in the middle of the connecting part, and a tying rope used for connecting two connected straight-through tubular injection molding part bodies together is matched with the round hole; a rectangular groove or a rectangular insert block is integrally arranged at the other end part of the straight-through tubular injection molding part body, and the rectangular insert block is matched with the rectangular groove; the rectangular insert block is connected with the straight-through tubular injection molding part body through a connecting plate protruding out of the outer surface of the straight-through tubular injection molding part body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021310858.5U CN213272005U (en) | 2020-07-07 | 2020-07-07 | PVDF injection molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021310858.5U CN213272005U (en) | 2020-07-07 | 2020-07-07 | PVDF injection molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213272005U true CN213272005U (en) | 2021-05-25 |
Family
ID=75958280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021310858.5U Expired - Fee Related CN213272005U (en) | 2020-07-07 | 2020-07-07 | PVDF injection molding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213272005U (en) |
-
2020
- 2020-07-07 CN CN202021310858.5U patent/CN213272005U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210525 |