CN109517339A - A method of improving cable testing bridge intensity - Google Patents
A method of improving cable testing bridge intensity Download PDFInfo
- Publication number
- CN109517339A CN109517339A CN201811354185.0A CN201811354185A CN109517339A CN 109517339 A CN109517339 A CN 109517339A CN 201811354185 A CN201811354185 A CN 201811354185A CN 109517339 A CN109517339 A CN 109517339A
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- CN
- China
- Prior art keywords
- epoxy resin
- cable testing
- testing bridge
- improving
- filler
- 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.)
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention relates to a kind of epoxy resin composite material cable testing bridges of enhancing, more particularly to the method for improving cable testing bridge intensity, utilize fibre-reinforced principle, reinforcing glass fiber is added in the epoxy, after glass fibre and epoxy resin are compound, the mechanical property and heat resistance of cable testing bridge are improved.
Description
Technical field
The invention belongs to electrocomponent technology field, it is related to a kind of cable testing bridge more particularly to a kind of raising cable testing bridge is strong
The method of degree.
Background technique
Cable testing bridge is a kind of product more common in low-voltage distribution apparatus, have kind it is complete, using wide, intensity is big, knot
The features such as structure is light, low cost, construction is simple, wiring are flexible, installation standard, good appearance.According to the material of manufacture cable testing bridge
Steel cable bridge, fireproof glass reinforced plastic cable bridge frame, anticorodal aluminium alloy cable testing bridge, fire-proof cable bridge rack can be divided into.It is right
In cable testing bridge, corrosion-resistant, electrical insulating property and flame retardant property are more demanding.
The prior arts such as CN104455736A, CN202719271A are the simply coating fire prevention on groove profile shell and cover board
Layer does not consider the selection and flame retardant property, insulation performance of layer material of preventing fires.
The short fiber/glass fiber of low cost is to be blown by steam or centrifugal spinning process prepares, be mainly used in every
Heat and sound insulation.Glass fibre as composite material reinforcement body is to obtain under the effect of gravity through melt spinning.Glass fibre
Reinforced plastics is also known as glass fiber reinforced plastics product, is a kind of excellent fibre reinforced composites, and CN107746256A uses glass fibre
It is applied to cable testing bridge applied to enhancing ceramic composite, CN107674307A uses glass fibre and plastic fraction high-temperature molten
Reverse mould and cable testing bridge after change.The above method is complex, matrix compound poor, easy to fall off, strength character with gantry substrate
The problems such as poor.
In order to which while guaranteeing that cable testing bridge has strong mechanical performance, flame retardant property is improved, the present invention provides
A kind of improved cable testing bridge, significantly improves on mechanics and safe application performance.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of methods for improving cable testing bridge intensity.
The present invention is achieved by the following technical programs.
The present invention provides a kind of methods for improving cable testing bridge intensity, pass through copper bar sandblasting and oil removal treatment, copper bar
It is fixed in a mold, demoulding, the preparation of room temperature curing process after pouring molding, room temperature curing on a vibration table；It is characterized by:
The material poured is epoxy resin composite material.
The preparation of the epoxy resin composite material includes that filler is added in the acetone soln containing coupling agent, and stirring is equal
It is even, remove solvent；A certain amount of curing agent is added in epoxy resin and is uniformly mixed, the filler is then added to asphalt mixtures modified by epoxy resin
It is sieved after being uniformly mixed in rouge.The filler includes glass fibre.
The dosage of the glass fibre be 5-80, preferably 20phr, by epoxy resin mass parts for 100phr in terms of.
Fiberglass reinforced plastics is
Composite material made of dispersate.The dosage of the application glass fibre in the epoxy preferably has significant effect afterwards.
The curing agent be triethylene tetramine, dosage 12phr, by epoxy resin mass parts for 100phr in terms of.
The coupling agent is silane coupling agent, such as KH550, KH560, KH570.
The filler is selected from one of wollastonite, flake asbestos, vermiculite, silica flour or a variety of.
The filler be vermiculite when, dosage 40-70phr, by epoxy resin mass parts for 100phr in terms of.
Filler widely improves certain performances as incremental agent always to reduce manufacturing cost.To make filler and matrix
Between have good cementability, improve the modified effect of filler, it is necessary to handle filler surface using coupling agent.Through
The processed filler of silane coupling agent has a degree of improvement to the modified effect of epoxy resin, it can not only improve asphalt mixtures modified by epoxy resin
The impact flexibility of rouge, and the viscosity of casting material can be made to reduce, the loading of filler is increased, is reduced costs.This is because
Silane coupling agent has two class chemical groups in same molecule, therefore it can be with-the OH and and organic matter in inorganic matter
In long chain effect the effect of playing coupling, increase the binding force between organic matter and its inner inorganic object, play enhancing
With the effect improved its performance.
The impact flexibility of the epoxy resin composite material of one-component filling can not reach practical value, it is therefore desirable to
Glass fibre is added on the basis of above-mentioned experiment to be enhanced, and the purpose of application is reached.
The technical solution of improvement formula through the invention significantly improves the mechanical strength of cable testing bridge and heat-resisting heat-insulated
Performance further adds glass fibre, actually plays and further enhance power on the basis of vermiculite and epoxy resin are compound
Learn the effect of performance；Stability in use and safety are enhanced, the safe operation of cable testing bridge is realized.
Specific embodiment
Technical solution of the present invention is described further below, but claimed range is not limited to.
Table 1: the cable testing bridge shock resistance prepared without the compound resin of dosage filler
Unit: kjm-2
| Dosage/phr | 40 | 50 | 60 | 70 |
| Vermiculite | 1.6 | 1.6 | 1.7 | 2.26 |
Expanded vermiculite fills epoxy resin, and when expanded vermiculite dosage is 70phr, the impact strength of composite material is
2.26kj·m-2, reach maximum at this time, subsequent impact strength is begun to decline.Why vermiculite can increase the tough of epoxy resin
Property, it is to be sheet and very closely knit material due to vermiculite, there is biggish intensity and rigidity, is uniformly scattered in single sheet in addition
In epoxy resin-base, surface area is big, has preferable interfacial bonding with epoxy resin, when by external impacts, vermiculite lamella
A large amount of crazings can be caused, while can also preferably absorb impact energy, therefore the impact flexibility of epoxy resin composite material can be improved.
The relationship result of study of heat conductivity and amount of filler shows that the heat conductivity of solidfied material almost increases with amount of filler
Addition direct ratio rises, and certainly, the feature of filler itself plays very big effect to modified effect.The heat conductivity of filler itself is got over
Height, then the heat conductivity of the solidfied material with it is also higher.Opposite, if thermal coefficient, which is added, is less than the thermally conductive of polymer
The filled insulation of coefficient, with the increase of filled insulation dosage, epoxy resin cured product heat conductivity almost increases with amount of filler
The decline of addition direct ratio, the heat conductivity of filler itself is lower, then the heat conductivity of the solidfied material with it is also lower.
The heat insulation of expanded vermiculite is preferable, traces it to its cause: from material, the thermal coefficient very little of expanded vermiculite, only
It is far smaller than the thermal coefficient (0.17~0.50W/ (mK)) of epoxy resin for 0.051~0.07W/ (mK)；On the other hand.
Expanded vermiculite is that lamellar structure is dispersed in resin, and macromolecular chain is through in the tunnel of vermiculite lamella, in limited shape
State, free volume are reduced, thus it is heated when polymer segment movement it is more difficult, limit the transmitting of heat；And this structure table
Area is big, increases the propagation path of heat, is unfavorable for heat transfer, and heat transfer is hindered as " flashboard ".
For heat-insulated epoxy resin composite material, at least two-phase is constituted, and wherein epoxy resin is continuous phase, expands leech
Stone is dispersed phase.When expanded vermiculite content is lower, particle is in isolated state, does not almost have heat insulation；Work as expanded vermiculite
When content is 40 parts, there is a small amount of particle buildup, forms the thermally conductive open circuit in part, heat insulation is unobvious, when expanded vermiculite content reaches
When to 70 parts, there are more particle buildups, almost form thermally conductive open circuit, heat insulation is obvious.Expanded vermiculite and asphalt mixtures modified by epoxy resin at this time
Aliphatic radical private savings are peeling-off, it is clear that dosage should not be further added by, and be further added by the content of expanded vermiculite, be influenced not on heat insulation
Greatly.
Table 2: the influence for the cable testing bridge mechanical property that glass fibre dosage prepares composite material
A small amount of glass fibre, which is added, can increase substantially the impact flexibility of epoxy resin composite material, as addition 20phr
After glass fibre, impact strength 7.93kj/m2, than the impact strength (1.25kj/m of pure epoxy resin2) improve five times
It is more, achieve the purpose that anti-impact, there is good use value.
The particular embodiment of the present invention is illustrated above, but protection content of the invention be not only limited to it is above
Embodiment, in technical field of the invention, the usual knowledge of to master, so that it may be carried out within the scope of its technology main idea
Diversified change.
Claims (7)
1. a kind of method for improving cable testing bridge intensity, by copper bar sandblasting and oil removal treatment, copper bar it is fixed in a mold,
Demoulding, the preparation of room temperature curing process after pouring molding, room temperature curing on shake table；It is characterized by:
The material poured is epoxy resin composite material；The preparation for stating epoxy resin composite material includes filler being added to containing even
It in the acetone soln for joining agent, stirs evenly, removes solvent；A certain amount of curing agent is added in epoxy resin and is uniformly mixed,
Then the filler is added to after being uniformly mixed in epoxy resin and is sieved, the filler includes glass fibre.
2. improving the method for cable testing bridge intensity as described in claim 1, it is characterised in that: the dosage of the glass fibre is
5-80phr, by epoxy resin mass parts for 100phr in terms of.
3. improving the method for cable testing bridge intensity as described in claim 1, it is characterised in that: the dosage of the glass fibre is excellent
Be selected as 20phr, by epoxy resin mass parts for 100phr in terms of.
4. improving the method for cable testing bridge intensity as described in claim 1, it is characterised in that: the curing agent is triethylene four
Amine, dosage 12phr, by epoxy resin mass parts for 100phr in terms of.
5. improving the method for cable testing bridge intensity as described in claim 1, it is characterised in that: the coupling agent is silane coupled
Agent.
6. improving the method for cable testing bridge intensity as claimed in claim 5, it is characterised in that: the silane coupling agent is preferably
KH550, KH560, KH570.
7. improving the method for cable testing bridge intensity as described in claim 1, it is characterised in that: the filler further includes silicon ash
One of stone, flake asbestos, vermiculite, silica flour are a variety of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811354185.0A CN109517339A (en) | 2018-11-14 | 2018-11-14 | A method of improving cable testing bridge intensity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811354185.0A CN109517339A (en) | 2018-11-14 | 2018-11-14 | A method of improving cable testing bridge intensity |
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| Publication Number | Publication Date |
|---|---|
| CN109517339A true CN109517339A (en) | 2019-03-26 |
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ID=65777755
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811354185.0A Pending CN109517339A (en) | 2018-11-14 | 2018-11-14 | A method of improving cable testing bridge intensity |
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| Country | Link |
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| CN (1) | CN109517339A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002071566A2 (en) * | 2001-03-06 | 2002-09-12 | Adam Hall Gmbh | Cable link |
| CN104600637A (en) * | 2015-02-05 | 2015-05-06 | 安徽力高电气有限公司 | Cable bridge with composite epoxy resin |
| CN105185462A (en) * | 2015-10-20 | 2015-12-23 | 宁波东昊电缆附件有限公司 | 110kV epoxy type insulation copper housing |
| CN107565474A (en) * | 2017-10-29 | 2018-01-09 | 江苏鼎荣电气集团有限公司 | A kind of composite electric cable bridge and its production technology |
-
2018
- 2018-11-14 CN CN201811354185.0A patent/CN109517339A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002071566A2 (en) * | 2001-03-06 | 2002-09-12 | Adam Hall Gmbh | Cable link |
| CN104600637A (en) * | 2015-02-05 | 2015-05-06 | 安徽力高电气有限公司 | Cable bridge with composite epoxy resin |
| CN105185462A (en) * | 2015-10-20 | 2015-12-23 | 宁波东昊电缆附件有限公司 | 110kV epoxy type insulation copper housing |
| CN107565474A (en) * | 2017-10-29 | 2018-01-09 | 江苏鼎荣电气集团有限公司 | A kind of composite electric cable bridge and its production technology |
Non-Patent Citations (2)
| Title |
|---|
| 冯新德主编: "《高分子辞典》", 30 June 1998 * |
| 童凤昭编著: "《工程材料》", 28 February 1987 * |
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Application publication date: 20190326 |
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