CN103509315A - Seismic physical model material synthetized from epoxy resin composite polyurethane and preparation method of model material - Google Patents
Seismic physical model material synthetized from epoxy resin composite polyurethane and preparation method of model material Download PDFInfo
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- CN103509315A CN103509315A CN201210216239.3A CN201210216239A CN103509315A CN 103509315 A CN103509315 A CN 103509315A CN 201210216239 A CN201210216239 A CN 201210216239A CN 103509315 A CN103509315 A CN 103509315A
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Abstract
The invention discloses a seismic physical model material synthetized from epoxy resin composite polyurethane and a preparation method of the model material. The model material comprises the following components in parts by weight: 100 parts of epoxy resin, 33-55 parts of curing agent, 5-40 parts of polyurethane, 10-25 parts of diluent and 1.5-3 parts of defoamer. The method comprises the following steps: evenly mixing the components according to the dosage and then vacuumizing and defoaming, finally pouring and curing to prepare the seismic physical model material. By adopting the preparation method, the composite material of which the propagational speeds of acoustic waves gradually change from 1500-2500m/s is fabricated by changing the proportion of epoxy resin and polyurethane. The phenomenon of stratification caused by poor compatibility between materials is overcome; each pouring amount is increased; the new composite material has high penetrability; a foundation is established for fabrication of a large model.
Description
Technical field
The present invention relates to geophysical survey field, furtherly, relate to a kind of epoxy resin composite polyurethane synthetic seismic physical model material and preparation method.
Background technology
Seismic physical modeling Shi laboratory utilizes ultrasonic wave simulation field seismic wave, by ultrasonic transducer, excite and received signal, it is the effective means of Study of Seismic ripple propagation law, under lab make realistic architectonic physical model, kinematics and the dynamic characteristic of Study of Seismic ripple in complex structure, the material of making physical model must possess certain geological characteristics, Ge great institutes and colleges and universities are mainly used epoxy resin and the synthetic seismic physical model material of silicon rubber now, by changing the proportioning of epoxy resin and silicon rubber, change material acoustic wave propagation velocity, speed can have 1000m/s-2600m/s gradual change, can base area interval velocity need to produce the physical model that speed is different.But epoxy resin and silicon rubber composite material still have following three shortcomings:
The one, because the interfacial tension of silicon rubber is less, poor with epoxy resin compatibility, after mixing, easily there is demixing phenomenon, after model cast, epoxy resin sinks, silicon rubber floating, produces bottom and top speed non-uniform phenomenon, particularly when making large-sized model, if a thick-layer is repeatedly poured into a mould, will produce a lot of thin interbeds, completely different with actual requirement, have a strong impact on physical simulation precision.
The 2nd, in existing formula, epoxy resin is generally used solidifying agent 593, because 593 activity are higher, makes to build thickness at 1cm-2cm at every turn, otherwise there will be local superheating to cause model cracking, has a strong impact on molding efficiency and molding precision.
The 3rd, because the consistency of epoxy resin and silicon rubber is poor, cause the penetrance of matrix material to die down, when particularly silica gel content is higher, penetrance is poor, unfavorable to making large-sized model.
Summary of the invention
For solving problems of the prior art, the invention provides a kind of epoxy resin composite polyurethane synthetic seismic physical model and preparation method.Use epoxy resin and with the good polyurethane material of epoxy resin compatibility, select the solidifying agent of low activity and middle activity, by changing the proportioning of epoxy resin and urethane, produce acoustic wave propagation velocity by the matrix material of 1500m/s-2500m/s gradual change.Overcome the poor phenomenon that causes layering of consistency between material, improved and watered fluence at every turn, new matrix material has higher penetrance, for the making of large-sized model is laid a good foundation.
One of object of the present invention is to provide the synthetic seismic physical model material of a kind of epoxy resin composite polyurethane.
Described seismic physical model comprises the following material of cast:
Described solidifying agent is that amine value is less than 400mgKOH/g amine curing agent; Preferred cashew nut oil modified fatty amine;
Described thinner is ester plasticizer; Preferred dibutyl phthalate;
Described defoamer is phosphoric acid ester, preferably phosphoric acid tri-n-butyl;
Two of object of the present invention is to provide the preparation method of the synthetic seismic physical model of a kind of epoxy resin composite polyurethane.
Comprise: described component is mixed to rear cast cured explosive by described consumption and make described seismic physical model.
Can adopt the common pouring procedure of preparing seismic physical model in prior art.In the present invention, can preferably carry out according to the following steps:
1. pretreatment
According to model materials demand, a certain amount of epoxy resin E51 and urethane A component and urethane B component are put to 50 ℃ of preheatings of baking oven 1 hour, then take out vacuumize 30 minutes standby.
According to institute's expense, getting solidifying agent, thinner vacuumizes 30 minutes and does de-bubble after processing standby.
2. mould pre-treatment
After making mould, at mould inner surface brushing one deck release coating, generally use silica gel to do release coating, pour into a mould again model after waiting silica gel to solidify.
4. material formulation
By formula, take the material after processing, first in epoxy resin, add thinner, after stirring, add again solidifying agent, after stirring, add again urethane A component, finally add defoamer and stir.
5. vacuumize cast model
After material prepares and stirs, vacuumizing and process 10 minutes, then pour in packaged mould, is collapsible die after solidifying.
After pure epoxy resin solidifies, material hardness is larger, acoustic wave propagation velocity is higher, reach 2600m/s left and right, in epoxy resin-base, adding the good low speed material of elasticity is the effective ways that change matrix material speed, conventional have composite silicone rubber material and a compound thiorubber material, because the interfacial tension of silica gel is less, easily go out a demixing phenomenon, be unfavorable for making large seismic physical model, and thiorubber causes the decay of material penetrance serious after adding epoxy resin-matrix, neither be desirable material modified, fast-developing polyurethane material became epoxide modified ideal material in recent years, the present invention is applied to seismic physical model Material Field polyurethane material first, urethane and epoxy resin have good consistency, when using solidifying agent F50, participate in the chemical reaction of matrix material, material has good transmittancy and penetrance.Because the velocity of propagation of pure polyurethane material is 1500m/s left and right, add 40% urethane in epoxy group(ing) after, material velocity is tending towards definite value, so research on maximum utilized quantity gets 40%, urethane A component addition is from 5%-40%, because urethane A component participates in reaction, hardener dose increases progressively with the consumption of urethane A component, through experiment repeatedly, has determined stable formula.
During model building, first to, according to goal in research, determine the zone of interest position of simulation, then according to geologic structure interpretation, design a model, determine geometricsimilarity ratio and the kinematic similarity ratio of model, then, for different layer positions, different structures, different speed, select suitable material prescription; After formula is determined, according to the geometrical dimension of model and shape, make mould, and seal mould with silica gel; Then being exactly to prepare material, is the one deck in pourable model by schema, and the seismologic parameter of this layer is measured in the demoulding after mold curing after the demoulding.Seal the mould cast second layer again, repeat said process, each layer in layer-by-layer casting model observed once each layer of seismic phase being bonded together simultaneously again, until produce desirable physical model.
The effect of invention
1. new matrix material acoustic wave propagation velocity has certain velocity slope, has 1500m/s-2500m/s;
2. new matrix material has good penetrance, more than reaching 300mv;
3. new matrix material is without demixing phenomenon.
Accompanying drawing explanation
Fig. 1 is epoxy resin and the synthetic seismic physical model material velocity figure of urethane of different proportionings
Fig. 2 is the comparison diagram of two kinds of matrix material penetrance of comparative example and embodiment 8
Fig. 3 represents different speed formulas and the graph of a relation of curing time
Embodiment
Below in conjunction with embodiment, further illustrate the present invention.
Be below material therefor and auxiliary agent in example:
Epoxy resin: epoxy 618E-51 Wuxi resin processing plant
Urethane: the new photochemical factory in 101-polyurethane adhesive Shanghai
Urethane: polyurethane bicomponent joint sealant PUY-205 Suzhou Rui Gu Chemical Co., Ltd.
Thinner DBP: dibutyl phthalate Jinan City Cheng En Chemical Co., Ltd.
Solidifying agent F50: cashew nut oil modified aliphatic amide ZY-F50 amine value: 200-300mgKOH/g Xuzhou Zhong Yan Chemical Co., Ltd.
Solidifying agent 1618: modification cycloaliphatic amines ZY-1618 amine value: 200-300mgKOH/g Xuzhou Zhong Yan Chemical Co., Ltd.
Solidifying agent 593: butylglycidyl ether modified fatty amine amine value: 500-600mgKOH/g Changzhou Yi Jia novel material company limited
Defoamer: tributyl phosphate Qingdao Wan Sheng Chemical Co., Ltd.
Embodiment 1:
Somewhere physical model the first layer speed designs 2500m/s moulded dimension: 50cm*30cm*2cm
Below calculate by weight.
1, epoxy resin is poured into container, put into baking oven, temperature is controlled at 60 degrees Celsius, and preheating 2 hours is taken out, and then container is put into watertight chest and vacuumizes, and discharges the bubble in material, be controlled at-0.1Mpa of vacuum pressure, take out 120 minutes standby.
2, urethane 101A component, solidifying agent F50, DBP, tbp, through putting into container, vacuumize in each comfortable watertight chest, discharge the bubble in material, be controlled at-0.1Mpa of vacuum pressure, take out 30 minutes standby.
3, material ready after, the thinner DBP taking is joined in epoxy resin and stirred, then add successively urethane 101A component and stir, finally adding solidifying agent F50 and defoamer tributyl phosphate, stirring and within 5 minutes, make each component fully mix.
4, the mixture being stirred is put into watertight chest and vacuumize 10 minutes, until material surface, without obviously taking out after bubble, slowly pour in the mould of having sealed, control temperature of reaction, curing and demolding.
The preparation method of following examples is with embodiment 1.
Embodiment 2:
Somewhere physical model second layer speed designs 2300m/s moulded dimension: 50cm*30cm*2cm
Below calculate by weight.
Embodiment 3:
Somewhere physical model second layer speed designs 2200m/s moulded dimension: 50cm*30cm*2cm
Below calculate by weight.
Embodiment 4:
Somewhere physical model the 3rd interval velocity design 2100m/s moulded dimension: 50cm*30cm*2cm
Below calculate by weight.
Embodiment 5:
Somewhere physical model the 3rd interval velocity design 2000m/s moulded dimension: 50cm*30cm*2cm
Below calculate by weight.
Embodiment 6:
Somewhere physical model the 4th interval velocity design 1900m/s moulded dimension: 50cm*30cm*2cm
Below calculate by weight.
Embodiment 7:
Somewhere physical model the 4th interval velocity design 1750m/s moulded dimension: 50cm*30cm*2cm
Below calculate by weight.
The seismic physical model material velocity figure of embodiment 1 ~ 7 as shown in Figure 1, as shown in Figure 1, along with the continuous increase of polyurethane content, successively decrease gradually by matrix material speed.
Embodiment 8:
Somewhere physical model second layer speed designs 2250m/s moulded dimension: 50cm*30cm*2cm
Below calculate by weight.
In comparative example and embodiment 8, embodiment 9, silica gel and polyurethane content are 15%, comparative example is epoxy resin compound silica gel material prescription, example 8 is epoxy resin composite polyurethane material formulas, as shown in Figure 2, epoxy composite silica gel material penetrance is only 150mv, much smaller than the 320mv of epoxy composite polyurethane material, illustrate that epoxy resin composite polyurethane material has good penetrance, favourable to the making of large-sized model.
Embodiment 9:
Somewhere physical model second layer speed designs 2200m/s moulded dimension: 50cm*30cm*2cm
Below calculate by weight.
Fig. 3 represents different speed formulas and the relation of curing time, and series one is embodiment 2, and series two is embodiment 3, and series 3 is embodiment 5.The acoustic wave propagation velocity of this matrix material tends towards stability after 6 days in cast as shown in Figure 3, so model is in the 6 days test the bests afterwards that complete.
Comparative example:
Somewhere physical model the 3rd interval velocity design 1900m/s moulded dimension: 50cm*30cm*2cm
Below calculate by weight.
Claims (3)
1. the synthetic seismic physical model material of epoxy resin composite polyurethane, is characterized in that described seismic physical model material comprises following material:
Described solidifying agent is that amine value is less than 400mgKOH/g amine curing agent;
Described thinner is ester plasticizer;
Described defoamer is phosphoric acid ester.
2. the synthetic seismic physical model material of epoxy resin composite polyurethane as claimed in claim 1, is characterized in that:
3. a preparation method for the synthetic seismic physical model material of epoxy resin composite polyurethane as claimed in claim 1 or 2, is characterized in that described method comprises:
After described component is mixed by described consumption, vacuumize de-bubble, last cast cured explosive makes described seismic physical model material.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105440579A (en) * | 2014-08-08 | 2016-03-30 | 中国石油化工股份有限公司 | Water-base-containing seismic physical simulation reservoir material and preparation method and application thereof |
| CN105585818A (en) * | 2014-10-22 | 2016-05-18 | 中国石油化工股份有限公司 | A nickel-modified polyurethane doped epoxy resin earthquake physical model material, a preparing method thereof and applications of the material |
| CN108586834A (en) * | 2018-05-01 | 2018-09-28 | 新乡学院 | A kind of animation model production method |
| CN112500028A (en) * | 2019-09-16 | 2021-03-16 | 中国石油化工股份有限公司 | Physical property parameter variable seismic physical model, material and model manufacturing method |
| CN113526905A (en) * | 2020-04-18 | 2021-10-22 | 中国石油化工股份有限公司 | Stress-sensitive fractured reservoir seismic physical model and manufacturing method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105440579A (en) * | 2014-08-08 | 2016-03-30 | 中国石油化工股份有限公司 | Water-base-containing seismic physical simulation reservoir material and preparation method and application thereof |
| CN105440579B (en) * | 2014-08-08 | 2017-08-18 | 中国石油化工股份有限公司 | A kind of aqueous base seismic physical modeling reservoir material and its preparation method and application |
| CN105585818A (en) * | 2014-10-22 | 2016-05-18 | 中国石油化工股份有限公司 | A nickel-modified polyurethane doped epoxy resin earthquake physical model material, a preparing method thereof and applications of the material |
| CN105585818B (en) * | 2014-10-22 | 2018-04-06 | 中国石油化工股份有限公司 | A kind of nickel modified polyurethane doping epoxy resin seismic physical model material and preparation method and application |
| CN108586834A (en) * | 2018-05-01 | 2018-09-28 | 新乡学院 | A kind of animation model production method |
| CN112500028A (en) * | 2019-09-16 | 2021-03-16 | 中国石油化工股份有限公司 | Physical property parameter variable seismic physical model, material and model manufacturing method |
| CN112500028B (en) * | 2019-09-16 | 2022-07-08 | 中国石油化工股份有限公司 | Physical property parameter variable seismic physical model, material and model manufacturing method |
| CN113526905A (en) * | 2020-04-18 | 2021-10-22 | 中国石油化工股份有限公司 | Stress-sensitive fractured reservoir seismic physical model and manufacturing method thereof |
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