CN103939446A - Toughening FRP spiral connecting piece and manufacturing method thereof - Google Patents
Toughening FRP spiral connecting piece and manufacturing method thereof Download PDFInfo
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- CN103939446A CN103939446A CN201410205584.6A CN201410205584A CN103939446A CN 103939446 A CN103939446 A CN 103939446A CN 201410205584 A CN201410205584 A CN 201410205584A CN 103939446 A CN103939446 A CN 103939446A
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- Prior art keywords
- nut
- bolt
- frp
- connecting piece
- spiral connecting
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- 238000004519 manufacturing process Methods 0.000 title abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 29
- 229920005989 resin Polymers 0.000 claims abstract description 15
- 239000011347 resin Substances 0.000 claims abstract description 15
- 239000004744 fabric Substances 0.000 claims abstract description 11
- 239000000835 fiber Substances 0.000 claims abstract description 11
- 238000000465 moulding Methods 0.000 claims abstract description 6
- 239000003822 epoxy resin Substances 0.000 claims abstract description 3
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 3
- 238000002360 preparation method Methods 0.000 claims description 18
- 230000003014 reinforcing effect Effects 0.000 claims description 17
- 238000004513 sizing Methods 0.000 claims description 12
- 239000011265 semifinished product Substances 0.000 claims description 9
- 239000004014 plasticizer Substances 0.000 claims description 7
- 239000000047 product Substances 0.000 claims description 6
- 239000004593 Epoxy Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 210000001161 mammalian embryo Anatomy 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 210000003205 muscle Anatomy 0.000 claims description 3
- 239000011229 interlayer Substances 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 238000009413 insulation Methods 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 238000011031 large-scale manufacturing process Methods 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 3
- 238000010292 electrical insulation Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000011151 fibre-reinforced plastic Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920002748 Basalt fiber Polymers 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Landscapes
- Moulding By Coating Moulds (AREA)
Abstract
The invention discloses a toughening FRP spiral connecting piece and a manufacturing method of the toughening FRP spiral connecting piece. The toughening FRP spiral connecting piece comprises a bolt, a nut and a gasket. The bolt comprises a bolt head and a threaded rod, wherein the bolt head and the threaded rod are connected into a whole, and external threads are arranged on the threaded rod. Internal threads are arranged on the nut. The external threads and the internal threads are matched with each other. The threaded rod is sleeved with the gasket. The nut is tightly screwed on the threaded rod. According to the method, an epoxy resin substrate serves as a main body, flexibilizers are then added, and resin adhesive materials, short fiber and fiber cloth are formed according to vacuum molding. Mechanical and semi-automatic molding forming is adopted for the FRP connecting piece, and therefore large-scale production can be achieved; the FRP connecting piece is used for connection of FRP components, and the overall corrosion-free function, the non-magnetic function, the electric insulation function, the vortex-loss-free function, the vortex-interference-free function and other functions are given into full play; when the FRP connecting piece is used, the large FRP component can be resolved into multiple small FRP parts, and the energy saving effect and the emission reduction effect are achieved.
Description
Technical field
The present invention relates to a kind of FRP link, relate in particular to a kind of toughness reinforcing FRP spiral connecting piece and preparation method thereof.
Background technique
In order to improve structure durability, construct non-magnetic environment and to realize the objects such as electric insulation, nonmetallic material have had the application of very wide model in engineering, more typical nonmetallic material have FRP(Fiber Reinforced Plastics, fiber reinforced plastic, also claim glass fibre reinforced plastics), pottery, glass etc.The engineering component of these nonmetallic material compositions often needs link to be linked.If adopt traditional metal connecting piece (metal bolt, rivet, latch and dovetail groove etc.),, because of itself corrosion, magnetic and electric conductivity, affect overall function; Therefore, need corresponding nonmetal link.
Taking glass fibre, basalt fibre, carbon fiber or other high strength fibres as main material, the FRP link of making taking resin as auxiliary material, has become tool substitute products with broad prospects for development.The tensile strength of FRP link is 1.5～2.5 times of steel, density is 1/5～1/4 of steel, there is not corrosion, nonmagnetic, electric insulation, in Ac and high-frequency signal occasion, there is no the advantage such as eddy current loss and eddy current interference, be a kind of high-strength, light weight, there is the Novel engineering link of superior electromagnetic property.
But, because collapsing, existing FRP connecting member forming changes with temperature, humidity and the reason such as molding cycle length causes its size error very greatly, can not adapt to connect the situation of FRP member.
OCF company of the U.S. relies on its advantage in glass fibre field, has researched and developed the novel building composite materials such as light-duty glass fibre; At the beginning of 21 century, the expert of Japan works out again the new materials such as the high-strength carbon fibre composite material used based on carbon fiber-reinforced resin, and is applied to Practical Project, has brought into play that composite reinforcing is lightweight, intensity is high, the strong all advantages of corrosion resistance.But can only straight forming, and cannot adopt link to connect.
In recent years, carbon fiber composite reinforcing also had small-scale production and application test in China, and through State Bureau of Building Materials Industry's product quality center He Zhongye research institute etc., the safe application performance of FRP composite material had been carried out to test and study.The applicant is through theoretical research and experimental exploring for many years, between No. zero abutment and a bridge pier of Hubei Province's Zigui County pine tree col bridge, build domestic first across the concrete simply supported beam being formed by FRP muscle material, FRP prestressed tendon material and FRP ground tackle completely.This bridge belongs to the support engineering of the research project " nonmetallic material armored concrete bridge key technology research completely " of Science and Technology Department of Hubei Province project verification.Meanwhile, ship heavy industry test site during application is artificial, has built without magnetic workshop, has met nonmagnetic needs.These application, have certain exemplary role and developing meaning.But still can only adopt global formation and not use FRP link.
Because FRP material and ferrous materials physical property have some differences, therefore need to develop special technology and technique, maximize favourable factors and minimize unfavourable ones, give full play to new material energy-conservation, reduce pollute and exploitation new resources aspect effect.
At present, in the urgent need to developing a kind of FRP link, can install easily and be connected safely different FRP members, completely holding structure entirety non-corroding, nonmagnetic, electrical insulation, there is no eddy current loss and do not produce the advantages such as eddy current interference.
Through retrieval, have no the report of FRP link, also have no the patented technology about FRP link.
Summary of the invention
Object of the present invention is just to adapt to the universal of nonmetallic material, and a kind of toughness reinforcing FRP spiral connecting piece and preparation method thereof is provided.
The object of the present invention is achieved like this:
One, the structure of toughness reinforcing FRP spiral connecting piece
This link comprises bolt, nut and pad;
Bolt comprises the spiral shell head and the screw rod that connect as one, is provided with outside thread on screw rod;
On nut, be provided with internal thread;
Outside thread and internal thread are adaptive each other;
Pad is enclosed within on screw rod, and nut is tightened on screw rod.
Two, the component of toughness reinforcing FRP spiral connecting piece and preparation method
1, component
By weight percentage:
Resin sizing material 15～30%,
Chopped strand 15～25%,
Fibre cloth 50～60%,
Each component sum is 100%;
Described resin sizing material comprises epoxy matrix material, curing agent, promoter and plasticizer, and basic proportioning is recommended ratio in epoxy resin product specification; Wherein plasticizer is selected LNBR, and consumption is 2%～15% of resin sizing material, and bolt and nut are taking 4% as good, and pad 30 is taking 6% as good.
2, preparation method
Taking epoxy matrix material as main body, add in the usual way promoter and curing agent to stir, then add plasticizer to continue to stir, obtain resin sizing material for subsequent use; Resin sizing material, chopped strand and fibre cloth are pressed to following method vacuum plastic mold forming:
Three, the application of toughness reinforcing FRP spiral connecting piece
1) for fixed two or polylith FRP member;
2) while making electrical insulation purposes, can on two conductors, hole, add pad 30 therebetween, fastening with bolt 10.
The present invention has following advantages and good effect
1. this FRP link adopts mechanization, semi-automatic mold moulding, therefore can be mass-produced;
2. this FRP link is used for connecting FRP member and other non-metallic member, has brought into play not corrosion of entirety, nonmagnetic, electrical insulation, there is no eddy current loss and without functions such as eddy current interference;
3. use this FRP link, make upsized frp structural member can resolve into many small-sized FRP structural members, reduced production difficulty, improved installation efficiency, reduced raw material loss, transport difficulty and Active workings, there is energy-conservation and emission reduction effect.
Brief description of the drawings
Fig. 1 is the structural representation of this link;
Fig. 2 is regular hexagon schematic diagram;
Fig. 3 is the trapezoidal schematic diagram of class.
Wherein:
10-bolt, 11-spiral shell head, 12-screw rod, 13-outside thread;
20-nut, 21-internal thread;
30-pad.
Embodiment
Below in conjunction with accompanying drawing and example in detail:
One, the structure of toughness reinforcing FRP spiral connecting piece
As Fig. 1, this link comprises bolt 10, nut 20 and pad 30;
Bolt 10 comprises the spiral shell head 11 and the screw rod 12 that connect as one, is provided with outside thread 13 on screw rod 12;
On nut 20, be provided with internal thread 21;
Outside thread 13 and internal thread 21 are adaptive each other;
Pad 30 is enclosed within on screw rod 12, and nut 20 is tightened on screw rod 12.
Described spiral shell head 11 is polygonal, taking regular hexagon as good, as Fig. 2;
Described nut 20 is polygonal, taking regular hexagon as good, as Fig. 2;
Screw thread form is triangle, trapezoidal, class is trapezoidal or zigzag fashion, trapezoidal as good taking class; Described class is trapezoidal as Fig. 3, and the trapezoidal limit of class is not straight line, but the curve seamlessly transitting.
Two, the preparation method of toughness reinforcing FRP spiral connecting piece
1) preparation method of bolt
1. twine the FRP muscle material (similar rod material for subsequent use before preparation) of moulding to draw as skeleton, be wound around fibre cloth through machinery, add chopped strand to become embryo frame at the interlayer of cloth;
2. embryo frame is put into bolt external mold, bolt external mold comprises the two lobe moulds of preparing spiral shell head and the overall mould of preparing screw rod, then bolt external mold is placed in to the container of sealing, and to container vacuum-pumping, degree of vacuum is below 0.001MPa;
3. under vacuum environment, automatically suck resin sizing material by pipeline and valve, make to be full of the chopped strand of bolt external mold inside and the gap of fibre cloth;
4. under middle temperature or high temperature, solidify, obtain bolt semi-finished product, middle temperature: 150～170 DEG C, high temperature: 220～250 DEG C;
5. remove the vacuum of container, take out bolt semi-finished product, the mode of taking-up is rotation mode, obtains screwed semi-finished product
6. obtain bolt finished product through shaping.
2) preparation method of nut
The preparation method of nut and bolt is the same;
NUT FORMING DIES attached bag is drawn together nut external mold and nut internal mold, and nut external mold is two lobe moulds, and nut internal mold is an overall mould;
The mode that nut takes out is: first remove external mold, then nut semi-finished product are taken out in rotation from have externally threaded nut internal mold.
Three, feature of the present invention
1, the component of this link has plasticizer, selects LNBR, makes link not only have stronger rigidity, and has stronger toughness, is difficult for damaged.
2, the preparation method of this link guarantees the quality of screw thread: bolt external mold comprises the two lobe moulds of preparing spiral shell head and the overall mould of preparing screw rod, and the mode that bolt takes out is rotation mode; NUT FORMING DIES attached bag is drawn together nut external mold and nut internal mold, and nut external mold is two lobe moulds, and nut internal mold is an overall mould; The mode that nut takes out is: first remove external mold, then nut semi-finished product are taken out in rotation from have externally threaded nut internal mold.
3, the Placement of this link is tight: bolt is that spiral is connected with nut, and screw thread is that class is trapezoidal, and pad also has certain toughness, guarantees to connect the soundness of other member.
Claims (7)
1. a toughness reinforcing FRP spiral connecting piece, is characterized in that:
Comprise bolt (10), nut (20) and pad (30);
Bolt (10) comprises the spiral shell head (11) and the screw rod (12) that connect as one, is provided with outside thread (13) on screw rod (12);
On nut (20), be provided with internal thread (21);
Outside thread (13) and internal thread (21) are adaptive each other;
It is upper that pad (30) is enclosed within screw rod (12), and nut (20) is tightened on screw rod (12).
2. by the toughness reinforcing FRP spiral connecting piece of one claimed in claim 1, it is characterized in that:
Described spiral shell head (11) is polygonal, taking regular hexagon as good.
3. by the toughness reinforcing FRP spiral connecting piece of one claimed in claim 1, it is characterized in that:
Described nut (20) is polygonal, taking regular hexagon as good.
4. by the toughness reinforcing FRP spiral connecting piece of one claimed in claim 1, it is characterized in that:
The screw thread form of described outside thread (13) and internal thread (21) is triangle, trapezoidal, class is trapezoidal or zigzag fashion, trapezoidal as good taking class, and the trapezoidal limit of described class is not straight line, but the curve seamlessly transitting.
5. by the preparation method of a kind of toughness reinforcing FRP spiral connecting piece claimed in claim 1, it is characterized in that:
1) component
By weight percentage:
Resin sizing material 15～30%,
Chopped strand 15～25%,
Fibre cloth 50～60%,
Each component sum is 100%;
Described resin sizing material comprises epoxy matrix material, curing agent, promoter and plasticizer, and basic proportioning is recommended ratio in epoxy resin product specification; Wherein plasticizer is selected LNBR, and consumption is 2%～15% of resin sizing material, and bolt and nut are taking 4% as good, and pad 30 is taking 6% as good;
2) preparation method
Taking epoxy matrix material as main body, add in the usual way promoter and curing agent to stir, then add plasticizer to continue to stir, obtain resin sizing material for subsequent use; Resin sizing material, chopped strand and fibre cloth are pressed to vacuum plastic mold forming, prepare respectively bolt (10), nut (20) and pad (30).
6. by the preparation method of a kind of toughness reinforcing FRP spiral connecting piece claimed in claim 5, it is characterized in that:
The preparation method of described bolt is:
1. to draw the FRP muscle material that twines moulding as skeleton, be wound around fibre cloth through machinery, add chopped strand to become embryo frame at the interlayer of cloth;
2. embryo frame is put into bolt external mold, bolt external mold comprises the two lobe moulds of preparing spiral shell head and the overall mould of preparing screw rod, then bolt external mold is placed in to the container of sealing, and to container vacuum-pumping, degree of vacuum is below 0.001MPa;
3. under vacuum environment, automatically suck resin sizing material by pipeline and valve, make to be full of the chopped strand of bolt external mold inside and the gap of fibre cloth;
4. under middle temperature or high temperature, solidify, obtain bolt semi-finished product, middle temperature: 150～170 DEG C, high temperature: 220～250 DEG C;
5. remove the vacuum of container, take out bolt semi-finished product, the mode of taking-up is rotation mode, obtains screwed semi-finished product
6. obtain bolt finished product through shaping.
7. by the preparation method of a kind of toughness reinforcing FRP spiral connecting piece claimed in claim 5, it is characterized in that:
The preparation method of described nut is:
The same with the preparation method of bolt, NUT FORMING DIES attached bag is drawn together nut external mold and nut internal mold, and nut external mold is two lobe moulds, and nut internal mold is an overall mould;
The mode that nut takes out is: first remove external mold, then nut semi-finished product are taken out in rotation from have externally threaded nut internal mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410205584.6A CN103939446A (en) | 2014-05-15 | 2014-05-15 | Toughening FRP spiral connecting piece and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410205584.6A CN103939446A (en) | 2014-05-15 | 2014-05-15 | Toughening FRP spiral connecting piece and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103939446A true CN103939446A (en) | 2014-07-23 |
Family
ID=51187270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410205584.6A Pending CN103939446A (en) | 2014-05-15 | 2014-05-15 | Toughening FRP spiral connecting piece and manufacturing method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN103939446A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104327457A (en) * | 2014-10-29 | 2015-02-04 | 国家电网公司 | An anchor bolt suitable for underwater foundation and its production material |
| CN105199321A (en) * | 2015-10-10 | 2015-12-30 | 湖南大学 | A novel FRP material and its preparation method |
| CN112373067A (en) * | 2020-10-13 | 2021-02-19 | 山东中航和辉复合材料有限公司 | Thermoplastic composite material bolt and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1444885A (en) * | 1975-02-06 | 1976-08-04 | Vibro Loc Co Ltd | Nuts and bolts |
| JP2001099120A (en) * | 1999-09-27 | 2001-04-10 | Masato Nakawa | Bolt and fastening body with lock nut fastened on the bolt |
| CN1724246A (en) * | 2005-07-14 | 2006-01-25 | 海盐华强树脂有限公司 | Method for mfg. moulding plastic and its products by offcut of glassfibre cloth |
| CN1926188A (en) * | 2004-03-02 | 2007-03-07 | 东丽株式会社 | Epoxy resin composition for fiber-reinforced composite material, prepreg and fiber-reinforced composite material |
| KR20080021743A (en) * | 2008-02-18 | 2008-03-07 | 임성황 | Member with female thread on inner wall of bolt hole |
| CN101724368A (en) * | 2009-11-24 | 2010-06-09 | 烟台德邦科技有限公司 | Anti-impact epoxy structural rubber and preparation method thereof |
| CN102796349A (en) * | 2012-08-27 | 2012-11-28 | 黑龙江省科学院石油化学研究院 | Membranous room-temperature-curing epoxy resin composite material gasket and preparation method thereof |
| CN202971501U (en) * | 2012-12-05 | 2013-06-05 | 四川渊合高分子材料科技有限公司 | Fastener |
-
2014
- 2014-05-15 CN CN201410205584.6A patent/CN103939446A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1444885A (en) * | 1975-02-06 | 1976-08-04 | Vibro Loc Co Ltd | Nuts and bolts |
| JP2001099120A (en) * | 1999-09-27 | 2001-04-10 | Masato Nakawa | Bolt and fastening body with lock nut fastened on the bolt |
| CN1926188A (en) * | 2004-03-02 | 2007-03-07 | 东丽株式会社 | Epoxy resin composition for fiber-reinforced composite material, prepreg and fiber-reinforced composite material |
| CN1724246A (en) * | 2005-07-14 | 2006-01-25 | 海盐华强树脂有限公司 | Method for mfg. moulding plastic and its products by offcut of glassfibre cloth |
| KR20080021743A (en) * | 2008-02-18 | 2008-03-07 | 임성황 | Member with female thread on inner wall of bolt hole |
| CN101724368A (en) * | 2009-11-24 | 2010-06-09 | 烟台德邦科技有限公司 | Anti-impact epoxy structural rubber and preparation method thereof |
| CN102796349A (en) * | 2012-08-27 | 2012-11-28 | 黑龙江省科学院石油化学研究院 | Membranous room-temperature-curing epoxy resin composite material gasket and preparation method thereof |
| CN202971501U (en) * | 2012-12-05 | 2013-06-05 | 四川渊合高分子材料科技有限公司 | Fastener |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104327457A (en) * | 2014-10-29 | 2015-02-04 | 国家电网公司 | An anchor bolt suitable for underwater foundation and its production material |
| CN105199321A (en) * | 2015-10-10 | 2015-12-30 | 湖南大学 | A novel FRP material and its preparation method |
| CN112373067A (en) * | 2020-10-13 | 2021-02-19 | 山东中航和辉复合材料有限公司 | Thermoplastic composite material bolt and preparation method and application thereof |
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