CN109912839A - A kind of surface treatment method of buoyant material - Google Patents
A kind of surface treatment method of buoyant material Download PDFInfo
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- CN109912839A CN109912839A CN201910242631.7A CN201910242631A CN109912839A CN 109912839 A CN109912839 A CN 109912839A CN 201910242631 A CN201910242631 A CN 201910242631A CN 109912839 A CN109912839 A CN 109912839A
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- buoyant material
- treatment method
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Abstract
The present invention relates to a kind of surface treatment method of buoyant material, treatment method is first fixed in a reservoir by buoyant material to be processed, is placed in vacuum pouring tank immediately below sprue gate, vacuumizes；Epoxy resin, reactive diluent, coupling agent, surfactant are poured into mixing tank, uniformly simultaneously vacuum defoamation is stirred at room temperature；Curing agent and curing accelerator is added, is stirred at room temperature uniformly；Mixing tank feed opening valve is opened, resin mixture liquor is allowed to flow into the container of buoyant material, liquid level is higher than material upper surface 2-3cm；Vacuum pouring canister incoming gas mouth is opened, air pressure in tank is risen into 20000Pa, pressure maintaining pressure release after five minutes；It is rinsed to its surface with dehydrated alcohol without residual resin, 80 DEG C keep the temperature 12 hours.Material water absorption rate can be down to 0.1% hereinafter, and not influencing density of material using above-mentioned technique；Even if surface is destroyed to a certain degree, water absorption rate remains to be maintained at 0.5% or so, and the reliability of floating body greatly improved.
Description
Technical field
The invention belongs to technical field of composite materials, more particularly to a kind of surface treatment method of buoyant material.
Background technique
It is continuously increased along with China's marine resources development, ocean engineering etc. are movable, all kinds of buoyancy compensation materials make
Dosage is also improving year by year, is widely used in the fields such as underwater robot, bathyscaph, offshore oil platform, underwater construction.Floating
In numerous performance indicators of dead-wood material, the height of water absorption rate is related to the stability of buoyant material net buoyancy, the reliability of floating body
And the factors such as service life, it is an important indicator of product.Composite foam type (Syntactic Foam) is floating at present
The series of advantages such as dead-wood material is high with compressive resistance, processability is good, elasticity modulus is high, become the most commonly used one kind of application field
Buoyant material product.Currently, compression molding method is widely used moulding process in the production of composite foam type buoyant material,
Although having the series of advantages such as the low, simple process of product density, the naked material water absorption rate of product is higher than to be poured using vacuum
The product of the techniques such as note method, vacuum impregnation technology preparation, this phenomenon is especially prominent in low density products, can be to the net floating of material
Power, product reliability and service life bring adverse effect.
Spraying water-repellent paint is common salvo in ocean engineering.Under water in structure and equipment, application is more wide
General has epoxy type coating, polyurea type water-repellent paint etc..Since underwater equipment needs frequent floating, dive, off working state
Under storage also belong to marine atmosphere eroded environment, and vulnerable to direct sunlight, the aging speed of waterproof layer under this complex environment
It spends very fast；Further, since underwater equipment is in storage, lifting and work often by external force collision, it is also possible to cause to prevent
The breakage of water layer.Once waterproof layer fails, buoyant material will cause net buoyancy to decline because of water suction, be the use of underwater equipment
Bring security risk.In addition, buoyant material is total after application coating since this waterproof layer bulk density is apparently higher than float density
Volume density also will receive influence.It is more multiple for some shapes since epoxy/polyurea water-proof layer mostly uses spray coating method to construct
Miscellaneous buoyancy there is also constructional difficulties, waterproofing layer thickness is uneven the problems such as.
The mid-90, Inst. of Marine Chemical Engineering use asphalt mixtures modified by epoxy resin using the solid buoyancy material of chemical blowing process preparation
Rouge glass reinforced plastic waterproof layer, the waterproof layer there are brittleness big, poor toughness, it is easy to crack, easy to aging the disadvantages of.China Patent Publication No.
CN1401717 " the spray polyurea coating for solid buoyancy material " also reports a kind of in floating body surface spray polyurea package
Method of the layer to improve floating body waterproof, but the wrapping layer is poor to the wetting capacity of buoyant material matrix surface, is easy peeling；
Ultraviolet-resistant capacity is poor, easy to aging；Construction method generally sprays, therefore is unsuitable for the more complex floating body of some shapes.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of surface treatment methods of buoyant material, with epoxy
Resin, diluent, surfactant, coupling agent, curing agent, curing accelerator etc. are raw material, using the spy of vacuum/pressurized auxiliary
Different technique, is surface-treated buoyant material.The construction technology is convenient, cost is relatively low, not will increase float density, is not easy old
Change；Not only water absorption rate is greatly reduced buoyant mass by processing, and water absorption rate can also be protected after surface is by breakage to a certain degree
It holds in reduced levels, reliability is substantially better than traditional epoxy/polyurea water-proof layer, can effectively promote the net buoyancy of buoyant material
Stability, reliability and service life have very high practical value.
The invention is realized in this way a kind of surface treatment method of buoyant material, includes the following steps:
1) buoyant material to be processed is fixed in a reservoir, it is placed in vacuum pouring tank immediately below sprue gate, then
It vacuumizes；
2) mass parts are pressed, by 100 parts of epoxy resin, 30-45 portions of reactive diluents, 2 parts of coupling agents, 0.5 part of surface-active
Agent is poured into the mixing tank of vacuum pouring tank, is stirred at room temperature uniformly, then deaeration 15 minutes under vacuum conditions；Then it is added
12-18 parts of curing agent and 0.5 part of curing accelerator are stirred at room temperature uniformly；
3) mixing tank feed opening valve is opened, resin mixture liquor is allowed to flow into the container equipped with buoyant material, until liquid level
Higher than buoyant material upper surface 2-3cm；Vacuum pouring canister incoming gas mouth is opened, is risen to air pressure in vacuum pouring tank with air compressor machine
20000Pa, pressure maintaining pressure release after five minutes；
4) floating body is taken out, is rinsed to its surface with dehydrated alcohol without residual resin, it is small to be put into heat preservation 12 in 80 DEG C of baking ovens
When, it can be used after natural cooling.
Step 1) -4 can be repeated as the case may be), to guarantee floating body surface treatment effect.
In the above-mentioned technical solutions, it is preferred that in the step 1), container edge is at least above buoyant material upper surface
5cm。
In the above-mentioned technical solutions, it is preferred that the step 1) and 2) in, the pressure of vacuum is below 1000Pa.
In the above-mentioned technical solutions, it is preferred that the epoxy resin is bisphenol A type epoxy resin.
In the above-mentioned technical solutions, it is further preferred that the epoxy resin is E51 type epoxy resin.
In the above-mentioned technical solutions, it is preferred that the reactive diluent is butyl glycidyl ether.
In the above-mentioned technical solutions, it is preferred that the surfactant is Disponer 904S.
In the above-mentioned technical solutions, it is preferred that the coupling agent is gamma-aminopropyl-triethoxy-silane.
In the above-mentioned technical solutions, it is preferred that the curing agent is fatty amines curing agent.
In the above-mentioned technical solutions, it is further preferred that the curing agent is (2,3 dimethyl) two butylidene triamine.
In the above-mentioned technical solutions, it is preferred that the curing accelerator is three-(dimethylamino methyl) phenol.
The stomata of material internal is the major reason for causing buoyant material to absorb water, and coating waterproof layer is current reduction buoyancy
The conventional means of material water absorption rate.But since this waterproof layer is attached only to buoyant material surface, once external force collision occurs
Or aging causes waterproof layer breakage that its using effect can then be greatly reduced.And the present invention is then by adjusting the viscous of resin solution
Degree, surface characteristic etc. make resin solution go deep into material internal stomata and form effectively filling, reach using hole internal and external pressure difference
To the effect for reducing water absorption rate.
According to along stroke pressure costing bio disturbance formula:
In formula: △ Pf- lost along stroke pressure, the λ-coefficient of viscosity, l-depth of penetration, d-capillary bore dia, ρ-liquid
Density, v-seepage velocity.
By it is above-mentioned along stroke pressure costing bio disturbance formula it is found that pressure drop △ under the penetration depth l of resin solution and equilibrium state
Pf(internal and external pressure difference) is directly proportional, is inversely proportional with interfacial friction factor λ, seepage velocity v etc..It therefore can be by increasing △ Pf, adjust
The means such as whole interfacial characteristics (reducing λ), increase resin solution to the penetration depth of stomata, to improve surface treatment effect and reliable
Property.
The present invention using epoxy resin, diluent, surfactant, coupling agent, curing agent, curing accelerator as raw material, with
The matrix (and resin system) of upper raw material and buoyant material composition is almost the same, is cured after entering floating body, Neng Gouqi
Run through the effect of pore to blocking.When carrying out resin mixture liquor allotment, using first addition diluent, surfactant and idol
Join agent, adds curing agent and curing accelerator, can either guarantee deaeration effect, and can guarantee the stability of technique, avoid
All components are disposably all added, and resin may be cured in stirring, de-aeration, and the viscosity of resin is caused to increase,
Cause the problem that subsequent technique is unstable；Diluent is added, the purpose of surfactant is to adjust resin viscosity, improvement resin pair
The wetting effect of capillary hole wall；The bond strength that coupling agent is to ensure that resin Yu capillary hole wall is added；Curing agent and solidification is added
Promotor is the curing characteristics in order to adjust resin.By adjusting resin viscosity, resin to the wetting characteristics on floating body material surface
And curing characteristics etc., design the resin formula that can effectively penetrate into floating body internal porosity；And using vacuum/pressurized auxiliary
Special process first sufficiently extracts the air in buoyant material stomata out, prevent its hinder resin to inside stomata infiltration and
Then infiltration improves the penetration depth of resin under positive pressure environment, to reach closing buoyant material stomata, to reduce its water suction
The effect of rate.
And compared to above buoyant material water-proof treatment technology, this construction technology is convenient, and cost is relatively low；Resin solution exists
It is penetrated under the action of pressure difference inside material stomata and forms effectively closing, so as to which material water absorption rate is effectively reduced；Through testing
It confirms, even if material surface, by a degree of breakage, water absorption rate remains to be maintained at 0.5% or so reduced levels；By
Very low in the amount of resin for penetrating into material internal along stomata, which has little effect the density of buoyant material；Most
Afterwards, surface treatment can also reinforce the position of buoyant material surface existing defects, to improve waterproof layer and buoyancy material
The adhesive strength of material increases the waterproof layer service life, is to achieve many things at one stroke.
The advantages and positive effects of the present invention are:
1) present invention uses above-mentioned process buoyant material, and the water absorption rate of material can be down to 0.1% hereinafter, remote low
In the naked material water absorption rate index of existing buoyant material, and it will not influence material volume density；Even if surface is by a degree of
It destroys, water absorption rate remains to be maintained at 0.5% or so reduced levels, the reliability of floating body greatly improved；
2) the floating body surface through this process is hard, coarse, helps to improve the attachment of epoxy/polyurea coating and substrate
Intensity can be improved reliability and the service life of waterproof layer；
3) treatment process of the present invention is compared to conventional spray paint epoxy or polyurea water-proof layer, have easy for construction, applicability is wide,
High reliablity does not improve the series of advantages such as float density, can significantly reduce the water absorption rate of buoyant material, improves its reliability
And service life, it can be widely applied at the buoyant materials in fields such as ocean engineering, underwater robot, marine oil and gas exploitation
Reason, use value with higher.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, and to this hair
It is bright to be further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and do not have to
It is of the invention in limiting.
Embodiment 1:
A kind of surface treatment method of buoyant material, includes the following steps:
1) buoyant material to be processed is fixed in a reservoir, it is placed in vacuum pouring tank immediately below sprue gate, then
It vacuumizes, vacuum pressure is lower than 1000Pa；
2) mass parts are pressed, by 100 parts of E51 type epoxy resin, 30 parts of butyl glycidyl ethers, 2 parts of three ethoxies of γ-aminopropyl
Base silane, 0.5 part of Disponer 904S are poured into the mixing tank of vacuum pouring tank, are stirred at room temperature 10 minutes, then in vacuum shape
Deaeration 15 minutes under state, vacuum pressure are lower than 1000Pa；Then 12 parts of (2,3 dimethyl) two butylidene triamines and 0.5 part is added
Three-(dimethylamino methyl) phenol, are stirred at room temperature 5 minutes；
3) mixing tank feed opening valve is opened, resin mixture liquor is allowed to flow into the container equipped with buoyant material, until liquid level
Higher than buoyant material upper surface 2-3cm；Vacuum pouring canister incoming gas mouth is opened, is risen to air pressure in vacuum pouring tank with air compressor machine
20000Pa, pressure maintaining pressure release after five minutes；
4) floating body is taken out, is rinsed to its surface with dehydrated alcohol without residual resin, it is small to be put into heat preservation 12 in 80 DEG C of baking ovens
When, it can be used after natural cooling.
Embodiment 2:
Embodiment 2 the difference from embodiment 1 is that, in step 2), resin mixture liquor is pressed: 100 parts of E51 type epoxy resin,
30 parts of butyl glycidyl ethers, 2 parts of gamma-aminopropyl-triethoxy-silanes, 0.5 part of Disponer 904S, 15 parts of (2,3 diformazans
Base) two butylidene triamines and 0.5 part of three-(dimethylamino methyl) phenol.
Embodiment 3:
Embodiment 3 the difference from embodiment 1 is that, in step 2), resin mixture liquor is pressed: 100 parts of E51 type epoxy resin,
30 parts of butyl glycidyl ethers, 2 parts of gamma-aminopropyl-triethoxy-silanes, 0.5 part of Disponer 904S, 18 parts of (2,3 diformazans
Base) two butylidene triamines and 0.5 part of three-(dimethylamino methyl) phenol.
Embodiment 4:
Embodiment 4 the difference from embodiment 1 is that, in step 2), resin mixture liquor is pressed: 100 parts of E51 type epoxy resin,
45 parts of butyl glycidyl ethers, 2 parts of gamma-aminopropyl-triethoxy-silanes, 0.5 part of Disponer 904S, 12 parts of (2,3 diformazans
Base) two butylidene triamines and 0.5 part of three-(dimethylamino methyl) phenol.
Embodiment 5:
Embodiment 5 the difference from embodiment 1 is that, in step 2), resin mixture liquor is pressed: 100 parts of E51 type epoxy resin,
45 parts of butyl glycidyl ethers, 2 parts of gamma-aminopropyl-triethoxy-silanes, 0.5 part of Disponer 904S, 15 parts of (2,3 diformazans
Base) two butylidene triamines and 0.5 part of three-(dimethylamino methyl) phenol.
Embodiment 6:
Embodiment 6 the difference from embodiment 1 is that, in step 2), resin mixture liquor is pressed: 100 parts of E51 type epoxy resin,
45 parts of butyl glycidyl ethers, 2 parts of gamma-aminopropyl-triethoxy-silanes, 0.5 part of Disponer 904S, 18 parts of (2,3 diformazans
Base) two butylidene triamines and 0.5 part of three-(dimethylamino methyl) phenol.
The homemade buoyant material of buoyant material selection to be processed is as process object, material used in above-described embodiment 1-6
Having a size of 5cm × 5cm × 10cm, bulk density 0.38g/cm3, naked material water absorption rate is 1.32%.
To embodiment 1-6 by surface treatment after buoyant material carry out properties test: including water absorption rate test, with
And the water absorption rate test after surface fracture.Test result is as shown in table 1.
The test method of properties is as follows:
1) surface treated sample water absorption rate: is measured into original quality m0, sample is put into pressure experiment device, beats
It is depressed into 3MPa pressure maintaining 24 hours, taking-up weighs its quality m after drying specimen surface moisture1.Water absorption rate calculates according to the following formula:
Water absorption rate=(m1-m0)/m0× 100%
2) about long 50mm, width 2mm, depth first the water absorption rate after surface fracture: are processed in surface treated specimen surface
The groove of 1mm, then measure processed rear sample mass M0, sample is put into pressure experiment device, is suppressed to 3MPa pressure maintaining 24
Hour, taking-up weighs its mass M after drying specimen surface moisture1.Surface fracture water absorption rate calculates according to the following formula:
Surface fracture water absorption rate=(M1-M0)/M0× 100%
1 embodiment 1-6 of table test and result
As it can be seen from table 1 the buoyant material handled with buoyant material surface treatment method provided by the invention, can incite somebody to action
The water absorption rate of material is down to 0.1% hereinafter, being far below the naked material water absorption rate index of existing buoyant material, and hardly influence material
Expect bulk density；Even if surface, by a degree of destruction, water absorption rate remains to be maintained at 0.5% or so reduced levels, greatly
Width improves the reliability of floating body.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify to technical solution documented by previous embodiment, or some or all of the technical features are equal
Replacement, and these are modified or replaceed, the model for technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (10)
1. a kind of surface treatment method of buoyant material, characterized by the following steps:
1) buoyant material to be processed is fixed in a reservoir, it is placed in vacuum pouring tank immediately below sprue gate, then takes out true
It is empty；
2) mass parts are pressed, by 100 parts of epoxy resin, 30-45 portions of reactive diluents, 2 parts of coupling agents, 0.5 part of surfactant fallen
In the mixing tank for entering vacuum pouring tank, it is stirred at room temperature uniformly, then deaeration 15 minutes under vacuum conditions；Then 12-18 is added
Part curing agent and 0.5 part of curing accelerator are stirred at room temperature uniformly；
3) mixing tank feed opening valve is opened, resin mixture liquor is allowed to flow into the container equipped with buoyant material, until liquid level is higher than
Buoyant material upper surface 2-3cm；Vacuum pouring canister incoming gas mouth is opened, is risen to air pressure in vacuum pouring tank with air compressor machine
20000Pa, pressure maintaining pressure release after five minutes；
4) floating body is taken out, is rinsed to its surface with dehydrated alcohol without residual resin, is put into 80 DEG C of baking ovens and keeps the temperature 12 hours, from
So it can be used after cooling.
2. a kind of surface treatment method of buoyant material according to claim 1, it is characterised in that: in the step 1),
Container edge is at least above buoyant material upper surface 5cm.
3. a kind of surface treatment method of buoyant material according to claim 1, it is characterised in that: the step 1) and 2)
In, the pressure of vacuum is below 1000Pa.
4. a kind of surface treatment method of buoyant material according to claim 1, it is characterised in that: the epoxy resin is
Bisphenol A type epoxy resin.
5. a kind of surface treatment method of buoyant material according to claim 4, it is characterised in that: the epoxy resin is
E51 type epoxy resin.
6. a kind of surface treatment method of buoyant material according to claim 1, it is characterised in that: the reactive diluent
For butyl glycidyl ether.
7. a kind of surface treatment method of buoyant material according to claim 1, it is characterised in that: the surfactant
For Disponer904S.
8. a kind of surface treatment method of buoyant material according to claim 1, it is characterised in that: the coupling agent is
Gamma-aminopropyl-triethoxy-silane.
9. a kind of surface treatment method of buoyant material according to claim 1, it is characterised in that: the curing agent is rouge
Fat amine curing agent, it is preferable that the curing agent is (2,3 dimethyl) two butylidene triamine.
10. a kind of surface treatment method of buoyant material according to claim 1, it is characterised in that: the solidification promotes
Agent is three-(dimethylamino methyl) phenol.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563134A (en) * | 2004-04-07 | 2005-01-12 | 海洋化工研究院 | Solid buoyancy material prepared through chemical blowing process |
| CN101270220A (en) * | 2008-04-30 | 2008-09-24 | 海洋化工研究院 | Method for preparing polyalcohol-base light overpressure resistant floating force material and equipment thereof |
| US20150353423A1 (en) * | 2013-07-09 | 2015-12-10 | Se Corporation | Method for manufacturing high-strength cement cured product |
-
2019
- 2019-03-28 CN CN201910242631.7A patent/CN109912839B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563134A (en) * | 2004-04-07 | 2005-01-12 | 海洋化工研究院 | Solid buoyancy material prepared through chemical blowing process |
| CN101270220A (en) * | 2008-04-30 | 2008-09-24 | 海洋化工研究院 | Method for preparing polyalcohol-base light overpressure resistant floating force material and equipment thereof |
| US20150353423A1 (en) * | 2013-07-09 | 2015-12-10 | Se Corporation | Method for manufacturing high-strength cement cured product |
Non-Patent Citations (1)
| Title |
|---|
| 谢北萍等: "碳纳米管改性泡沫镍/环氧树脂复合材料阻尼性能", 《复合材料学报》 * |
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