CN106885756A - Material volume density measuring method - Google Patents
Material volume density measuring method Download PDFInfo
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- CN106885756A CN106885756A CN201510945305.4A CN201510945305A CN106885756A CN 106885756 A CN106885756 A CN 106885756A CN 201510945305 A CN201510945305 A CN 201510945305A CN 106885756 A CN106885756 A CN 106885756A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/02—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume
- G01N9/04—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume of fluids
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Abstract
The invention discloses one kind material volume density measuring method.The material volume density measuring method comprises the following steps：Take two to draw the density pipe that titer cleans and dry, density pipe is weighed, be designated as M0；15 DEG C -17 DEG C of titer and the material body of metric density to be measured are separately filled with two bodys of density pipe, cover pipe close and water-bath, the mouth of pipe of the liquid level of water-bath less than body, the temperature of water-bath is higher than titer and the original temperature of material body, water-bath 0.5h-1h, wipes the liquid overflowed from the overflow channel of pipe close away, takes out density pipe, weighed after the liquid for wiping dry outer wall, the weight of the density pipe after injection titer is designated as M1, the weight of density pipe after injection material body is designated as M2；Calculate the relative density that body is expected in preset temperature：D=(M2-M0)/(M1-M0)*ρ0.Material volume density measuring method of the invention can directly carry out accurate measurement to the density of the material bodies of sticky many bubbles, and measurement is accurate and conveniently.
Description
Technical field
The present invention relates to density measure field, more particularly to a kind of material volume density measuring method.
Background technology
The method of the density measure of current flowing material has density agar diffusion method, density bottle method and densimeter measurement method.
Wherein density agar diffusion method can measure the density of more sticky material body, but accuracy is not high；Density bottle Fa Yinmi
Degree bottle carries thermometer, and smart structural design can relatively accurately measure the density of easily flowing material body；And it is close
Degree meter method, can be with the convenient and swift density for accurately measuring low viscosity fluid, but densitometer instrument price is expensive.
Three kinds of method of testings, have a common problem to solve, that is, be difficult to the density value of the material body to sticky many bubbles
Accomplish accurate measurement.
The content of the invention
Based on this, it is necessary to which providing a kind of density that can be quickly to the material body of sticky many bubbles carries out accurate measurement
Material volume density measuring method.
One kind material volume density measuring method, comprises the following steps：
(1) two density pipes, the density pipe, including body and pipe close are taken；The end closure of the body one
Blind end is formed, another end opening forms openend, and the internal diameter of the openend gradually increases from the inside to the outside,
The inwall of the openend is in frosted shape；The outer wall of the pipe close is in frosted shape, the size of the pipe close outer wall
It is gradually reduced by one end to relative one end and is matched with the openend for sealing, the pipe close has is used
In for expecting the overflow channel that the bubble and/or material body of body overflow in the body, the overflow channel is through described
The two ends of pipe close, when the pipe close is matched with the openend, the one end open direction of the overflow channel
In in the body, another end opening is toward outside the body；
The body and pipe close are cleaned, is dried；Density pipe every described is weighed, the density
The weight of pipe is designated as M0；
(2) body of a density pipe is built-in wherein expires titer, covers the pipe close, will
The density pipe is placed in isoperibol after note titer, and the temperature of isoperibol is higher than the standard in density pipe
The original temperature of liquid, wipes the titer overflowed from the overflow channel of the pipe close away, takes out the density pipe,
Weighed after the liquid for wiping dry outer wall, the weight of the density pipe after note titer is designated as M1；
(3) the material body of density to be measured is filled in the body of another Zhi Suoshu density pipe, is centrifuged, gone
Except the more material body layer of material body surface face bubbles, the pipe close is covered, the density pipe that will inject material body is put
In the isoperibol, the material body overflowed from the overflow channel of the pipe close is wiped away, take out the density
Pipe, is weighed after the liquid for wiping dry outer wall, and the weight of the density pipe after injection material body is designated as M2；
(4) relative density that body is expected in preset temperature is calculated：
D=(M2-M0)/(M1-M0)*ρ0, wherein ρ0It is the density of the titer.
Wherein in one embodiment, the material body in step (3) after centrifugation, when material body liquid level be less than institute
State pipe close it is lower along when, then supplement material body is to filling the body, centrifugal treating again under identical centrifugal condition.
Wherein in one embodiment, the body and the pipe close are cleaned with titer in step (1),
The body and the pipe close after cleaning, dry naturally.
Wherein in one embodiment, the body and the pipe close are cleaned with titer in step (1),
Sprayed with alcohol that volume fraction is 95%, then quickly dried up with 50 DEG C -60 DEG C of hot blast.
Wherein in one embodiment, the isoperibol uses water-bath, and during water-bath, the liquid level of water-bath is less than
The mouth of pipe of the body, the original temperature of the temperature higher than the titer in density pipe of water-bath.
Wherein in one embodiment, condition during centrifugation is：3000r/min-4000r/min is centrifuged
5min-10min。
Wherein in one embodiment, the density pipe also includes cock cap, in two built-in full scales of body
After quasi- liquid and the material body, cover the cock cap and the cock cap, and by institute two state density pipe be placed in it is described
In isoperibol.
According to analysis, cause the density measure error of toughness material body larger main reason is that such material body exists
Sample is easily mixed into more air, and the sky being mixed into during being loaded in production process or toward density measuring equipment
The mode of the not easy-to-use heating of gas is removed.These air occupy the segment space of density bottle and volume size is indefinite,
The measurement result deviation for ultimately resulting in density is larger.The liquid product of production will by national standard specification at present
Ask using density bottle method, the method the product of the relatively low viscosityes such as general aqua, washing class can obtain compared with
Accurate measurement data, but the product more sticky to hair moisturizer, gel, facial mask etc. then measures more difficult,
Show as that horizontal survey deviation is larger, measurement result is insincere.
Material volume density measuring method of the present invention, there is provided being used to contain in density pipe, body to wait to be centrifuged
Material body, the openend internal diameter of body gradually increases from the inside to the outside, and material body can be easily filled with adding to managing
In vivo.Density pipe of the present invention, the internal diameter of openend gradually increases from the inside to the outside, rather than existing close
The mode for diminishing and increasing again that first closes up of degree pipe, the purpose that the internal diameter of openend gradually increases from the inside to the outside is that have
Beneficial to expect in body internal bubble centrifugation when be thoroughly spilled over to more than liquid level, without material in vivo still
There is residual.Material body is processed in body by low-speed centrifugal, and the air in material body can quickly thoroughly from material
Ullage is spilled in vivo, the density pipe being related to can will expect that internal bubble is thoroughly removed in a short time
Totally, and it is expelled to that pipe is outer, the bubble in material body is effectively eliminated by density pipe, while because of centrifugal treating
Rear material body is not required to transfer and is directly used for density measure by density pipe, it is to avoid secondary operation may be brought into
Air.The centrifugation material body that finishes of defoaming treatment, covers pipe close, and at time through specifying and thermostat temperature
After reason, spilling material body and outside tube water part being wiped away, and screwing on cock cap, last precision weighing is simultaneously calculated.Through multiple
It is on probation, as a result show that the method is smaller to the measurement relative deviation of toughness product relative density, certainty of measurement
Height, and because eliminate conventional foam time (>12h) make greatly to reduce (single the time required to whole detection
Sample can be controlled in detection in 1h)；Simultaneously because density pipe volume is small, in the case where density pipe quantity is permitted
Disposable sample quantity is up to more than 36.Material volume density measuring method of the present invention, is ensureing to measure
Detect that operating efficiency is also greatly improved while precision.
Brief description of the drawings
Fig. 1 is one embodiment of the invention density pipe side cross sectional views.
Description of reference numerals
10th, density pipe；100th, body；110th, blind end；120th, openend；130th, boss；200、
Pipe close；210th, sealing；211st, slot to make way；220th, connecting portion；230th, overflow channel；240th, annular
Groove；300th, cock cap；310th, air-vent.
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.
Presently preferred embodiments of the present invention is given in accompanying drawing.But, the present invention can come real in many different forms
It is existing, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments is made to this
The understanding of disclosure of the invention content is more thorough comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly in another yuan
On part or can also there is element placed in the middle.When an element is considered as " connection " another element, it can
To be directly to another element or may be simultaneously present centering elements.
Unless otherwise defined, all of technologies and scientific terms used here by the article with belong to technology of the invention
The implication that the technical staff in field is generally understood that is identical.The art for being used in the description of the invention herein
Language is intended merely to describe the purpose of specific embodiment, it is not intended that in the limitation present invention.It is used herein
Term "and/or" includes the arbitrary and all of combination of one or more related Listed Items.
It is shown in Figure 1, present embodiment discloses a kind of density pipe 10.The density pipe 10 include body 100,
Pipe close 200 and cock cap 300.The body 100 of the density pipe 10 that the present embodiment is related to, pipe close 200 and
The material of cock cap 300 can be glass material, stainless steel or rigid plastics material；It is preferred that glass material
Matter or stainless steel, more preferably coloured glaze material.
Shown in Figure 1, the end closure of body 100 1 forms blind end 110, and another end opening forms openend
120.From the bottom to top, bore increases gradually for the middle and lower part of body 100, and blind end 110 is in hollow hemisphere shape,
Namely the outer wall of blind end 110 is in round and smooth curved.The internal diameter of openend 120 gradually increases from the inside to the outside,
The inwall of openend 120 is in frosted shape.
Shown in Figure 1, the size of the periphery wall of pipe close 200 is gradually reduced by one end to relative one end, pipe
Plug 200 is matched with openend 120, and pipe close 200 is engaged with openend 120 and will be opened with by pipe close 200
Mouth end 120 seals.Inwall of the body 100 near openend 120 has a boss 130, and boss 130
Outer wall rounding off to body 100 inwall.
Shown in Figure 1, pipe close 200 has the overflow channel overflowed for the bubble of material body in body 100
230, toward in body 100, another end opening is toward outside body 100 for the one end open of overflow channel 230.
The internal diameter size of overflow channel 230 by toward the one end in body 100 to towards the other end outside pipe gradually
Reduce, when the material body expanded by heating in body 100 is easy in the setting of the construction, material body can be moved smoothly through
Overflow channel 230 flows out.
Shown in Figure 1, in the present embodiment, pipe close 200 includes the sealing for sealing openend 120
Portion 210 and the connecting portion 220 for connecting cock cap 300.Sealing 210 is connected with connecting portion 220.Overflow
In the end face of planar ends, the other end is opened on the end face at back taper end to the one end open of passage 230.
Connecting portion 220 and the cyclic connected in star 240 of the periphery wall concave shape of the junction of sealing 210.Except setting is removed
Reduce outside the material quantity and weight of pipe close, what staff of being more convenient for was operated is affectedly bashful, and the partial skin of finger can enter
Enter in annular groove 240, be easy to finger to have an effect and be affectedly bashful connecting portion 220, by whole pipe close 200 from body
Extracted in 100, or pipe close 200 is filled in body 100 and tightened.
Overflow channel 230 runs through sealing 210 and connecting portion 220.The axis and body of overflow channel 230
100 diameter parallel.
Shown in Figure 1, the end face outwardly of connecting portion 220 is in plane so that the end forms planar ends.It is flat
The size of face end periphery wall is gradually reduced by near one end of body 100 to the one end away from body 100.It is close
Envelope portion 210 is tapered towards the end face in body 100 so that end formation tapering point, the bottom of pipe close 200 is
Back taper is designed, 150 degree of -170 degree of cone angle, and taper is along rounding off.In the sealing of pipe close 200
210 end sets end face in an inverted cone, and this end face is easy to expect body certainly when the material body of body 100 is in constant temperature
So overflowed by overflow channel 230 is smooth.The marginal trough of the end face of tapering point forms slot to make way 211.
Shown in Figure 1, the periphery wall size of sealing 210 is gradually reduced by body 100 is outer in.It is close
The periphery wall in envelope portion 210 is in frosted shape.Sealing 210 is engaged with the inwall of openend 120.Pipe close
200 when being matched with openend 120, and slot to make way 211 is engaged with boss 130.Slot to make way 211 and boss
130 are engaged so that sealing 210 closely coordinates and contact with the inwall of body 100 so that close
It is capable of the opening portion of tightly sealed body 100 in envelope portion 210, it is to avoid leakage.In the periphery of sealing 210
The inwall of wall and openend 120 is arranged to frosted shape so that the periphery wall of sealing 210 and openend 120
Inwall be fitted close, it is to avoid leakage.
Shown in Figure 1, the size of the lower openings inwall of cock cap 300 gradually increases from the inside to the outside.Connection end
220 periphery wall is in frosted shape, and the lower openings inwall of cock cap 300 is in frosted shape.Cock cap 300 and connecting portion
220 planar ends matching connection, namely be engaged.In the periphery wall and cock cap 300 of connecting portion 220
Inwall is arranged to frosted shape so that connecting portion 220 is fitted close with cock cap 300, it is to avoid leakage.Cock cap 300
It is the weight loss based on issuable material body and moisture content when accurately controlling material body spilling in pipe.
Opening of the cock cap 300 by overflow channel 230 outwardly covers, and cock cap 300 surrounds use with pipe close 200
In the accommodating cavity for accommodating spilling material body.There is air-vent 310 on cock cap 300.Air-vent 310 and overflow channel
230 opening offset toward the one end of cock cap 300 is distributed.Leave air-vent 310 on cock cap 300, it is convenient with
Outside atmosphere is communicated, for balancing the pressure inside and outside cock cap 300, the spilling of the air being easy in cock cap 300.
The density pipe 10 of the present embodiment, when pipe close 200 fills in the openend of body 100, sealing 210
In the openend 120 of body 100, connecting portion 220 is located at more than the marginal position of openend 120,
And annular groove 240 also is located at more than the marginal position of openend 120, it is easy to being affectedly bashful for staff.
Density pipe 10 of the present invention for expect volume density measure when, the material volume density measurement side being related to
Method, comprises the following steps：
(1) two density pipes 10 are taken, body 100 and pipe close 200 is cleaned with titer, dried, washed
The body 100 and the pipe close 200 after net, dry naturally；Or with the wine that volume fraction is 95%
After essence spraying, then 50 DEG C -60 DEG C of hot blast drying；Density pipe 10 every described is weighed, it is described close
The weight for spending pipe 10 is designated as M0；
(2) body 100 of a density pipe 10 is built-in wherein expires titer, covers described
Pipe close 200, the density pipe 10 after water filling is placed in isoperibol, and the temperature of isoperibol is higher than density
The original temperature of the titer in pipe, the isoperibol uses water-bath, and during water-bath, the liquid level of water-bath is less than
The mouth of pipe of the body, the original temperature of the temperature higher than the titer in density pipe 10 of water-bath.Wipe away from institute
The titer overflowed in the overflow channel 230 of pipe close 200 is stated, the density pipe 10 is taken out, dry outer wall is wiped
Liquid is simultaneously weighed after covering cock cap 300, and the weight of the density pipe 10 after water filling is designated as M1；
(3) the material body of density to be measured is filled in the body 100 of another Zhi Suoshu density pipe 10,
3000r/min-4000r/min is centrifuged 5min-10min, and the more feed liquid layer of body surface face bubbles is expected in removal, when
Expect the liquid level of body less than the body 100 130 position of boss when, then supplement material body is to filling the body
100, centrifugal treating again under identical centrifugal condition.The pipe close 200 is covered, the described close of material body will be injected
Degree pipe 10 is placed in the isoperibol, wipes the material overflowed from the overflow channel 230 of the pipe close 200 away
Body, takes out the density pipe 10, wipes the moisture content of dry outer wall and is weighed after covering cock cap, after injection material body
The weight of the density pipe 10 be designated as M2；
(4) relative density that body is expected in preset temperature is calculated：
D=(M2-M0)/(M1-M0)*ρ0, wherein ρ0It is the density of the titer set point of temperature, unit
g/mL。
The below material volume density measurement using density pipe 10 of the present invention at a temperature of for 13 DEG C -16 DEG C
When, the material volume density measuring method being related to comprises the following steps：
(1) two density pipes 10 are taken, by the body 100 and pipe close 200, cock cap of the density pipe 10
300 are cleaned with titer, are dried naturally.In the present embodiment, titer can use deionized water.Or
The body 100 and pipe close 200, cock cap 300 of the density pipe 10 are sprayed with the alcohol that volume fraction is 95%
Once or repeatedly, then with 50 DEG C -60 DEG C of hot blast quickly dry up.(body is contained to density pipe 10 every described
100th, pipe close 200 and cock cap 300) to be weighed, the weight of the density pipe 10 is designated as M0。
(2) 15 DEG C are filled in a body 100 of the density pipe 10 (No. 1 can be designated as) wherein
- 17 DEG C of titer, covers the pipe close 200, and the density pipe 10 after water filling is placed in isoperibol,
Original temperature of the temperature of isoperibol higher than the titer in density pipe 10.In the present embodiment, constant temperature ring
Border can use water-bath, the mouth of pipe of the liquid level less than the body 100 of water-bath.The temperature of water-bath for (20 ±
0.2) DEG C, original temperature of the temperature of water-bath higher than titer.Water bath time is 0.5h-1h, is wiped away from institute
The titer overflowed in the overflow channel 230 of pipe close 200 is stated, the density pipe 10 is taken out, dry density pipe is wiped
The liquid of 10 outer walls is simultaneously weighed after covering cock cap, and the weight of the density pipe 10 after water filling is designated as M1。
(3) 13 DEG C -16 DEG C are filled in the body 100 of another Zhi Suoshu density pipe 10 (No. 2 can be designated as)
Metric density to be measured material body, 3000r/mi-4000r/min centrifugation 5min-10min, removal material body surface face contains
The more feed liquid layer of bubble.When the liquid level for expecting body is less than the position of the boss 130 of the body 100, then
Supplement material body to filling the body 100, centrifugal treating again under the same terms.The pipe close 200 is covered,
The density pipe 10 that material body will be injected is placed in isoperibol, and the temperature of isoperibol is higher than density pipe 10
In titer original temperature.In the present embodiment, isoperibol can use water-bath, water bath processing bar
Part is identical with the density pipe 10 of water filling, wipes what is overflowed from the overflow channel 230 of the pipe close 200 away
Material body, takes out the density pipe 10, wipes the liquid of dry outer wall and is weighed after covering cock cap 300, injects
The weight of the density pipe 10 after material body is designated as M2。
(4) relative density (unit that body is expected in preset temperature is calculated：g/mL)：
D=(M2-M0)/(M1-M0)*ρ0, wherein ρ0It is the density of the titer, in the present embodiment,
Titer uses deionized water, deionized water ρ at 20 DEG C0It is 0.99823.
The above-mentioned measurable material body of same method other temperature spots density value, the wherein temperature of isoperibol
The temperature spot of material body is necessarily be greater than, and temperature of the titer before body is injected is also required to less than isoperibol
Temperature.In addition, the precision to ensure measurement, parallel can be tested with three density pipe similarity conditions,
Result remembers average value.
Density pipe 10 of the present invention when in use, when for the measurement for expecting volume density, can select pipe
Body 100 and pipe close 200 cooperatively form common density pipe.When the accurate measurement of volume density is expected, can be with
Accurate density pipe is cooperatively formed from body 100, pipe close 200 and cock cap 300, the setting of cock cap 300 is avoided
The loss that material body is overflowed in body 100 and the volatilization for reducing moisture content, so as to accurately controlling because of body 100
The measurement error being likely to result in that interior material body spilling is lost and moisture content scatters and disappears.
Contrast test one
The detection of cosmetic water density, temperature control (20 ± 0.2) DEG C, density unit：g/mL.
Material volume density measurement side of the toner in by accurate density pipe, common density pipe using the present embodiment
The comparing of density value and the density value drawn using density bottle, density cup and densitometer that method draws, referring to
Shown in table 1.
Table 1
| Experiment sequence number | Embodiment 1 | Embodiment 2 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Testing tool | Accurate density pipe | Common density pipe | Density bottle | Density cup | Densitometer |
| Measurement is for the first time | 1.0126 | 1.0121 | 1.0125 | 1.0127 | 1.0123 |
| Second of measurement | 1.0122 | 1.0126 | 1.0121 | 1.0120 | 1.0121 |
| Measurement third time | 1.0124 | 1.0123 | 1.0122 | 1.0121 | 1.0123 |
| Measure the 4th time | 1.0120 | 1.0119 | 1.0121 | 1.0122 | 1.0120 |
| Measure the 5th time | 1.0122 | 1.0118 | 1.0119 | 1.0120 | 1.0122 |
| Measure the 6th time | 1.0120 | 1.0120 | 1.0120 | 1.0120 | 1.0120 |
| Measure the 7th time | 1.0119 | 1.0121 | 1.0119 | 1.0117 | 1.0119 |
| Measure the 8th time | 1.0126 | 1.0127 | 1.0124 | 1.0125 | 1.0124 |
| Measure the 9th time | 1.0123 | 1.0122 | 1.0122 | 1.0124 | 1.0123 |
| Measure the tenth time | 1.0121 | 1.0120 | 1.0123 | 1.0118 | 1.0121 |
| Average value | 1.0122 | 1.0122 | 1.0122 | 1.0121 | 1.0122 |
| Maximum | 1.0126 | 1.0127 | 1.0125 | 1.0127 | 1.0124 |
| Minimum value | 1.0119 | 1.0118 | 1.0119 | 1.0117 | 1.0119 |
| Absolute deviation values | 0.0007 | 0.0009 | 0.0006 | 0.0010 | 0.0005 |
| Relative deviation ratio | 0.69 | 0.89 | 0.59 | 0.99 | 0.49 |
Toner material body viscosity (viscosity number 50mpa.s-800mpa.s under normal temperature) is relatively low, the gas in material body
Bubble is easy to voluntarily spill on liquid level, therefore ineffective which kind of method of testing on the whole, show higher
Precision, within the acceptable range.Comparatively, such material body densimeter measurement precision highest,
Next to that density bottle and accurate density pipe measurement.
Contrast test two
The detection of shampoo density, temperature control (20 ± 0.2) DEG C, density unit：g/mL.
Material volume density measurement side of the shampoo in by accurate density pipe, common density pipe using the present embodiment
The comparing of density value and the density value drawn using density bottle, density cup and densitometer that method draws, referring to
Shown in table 2.
Table 2
The material body viscosity number of shampoo is general in the range of 2000mpa.s-20000mpa.s, after air enters
The gas of material body could be preferably eliminated after (40 DEG C, about the need 8h-24h) treatment of insulation for typically needing the long period
Bubble.Above is by the detection of the sample after the treatment that disappears, showing to be showed with accurate density pipe and density bottle
Go out accuracy value higher, common density pipe and density cup certainty of measurement are slightly worse.
Contrast test three
The detection of skin care cream density, temperature control (20 ± 0.2) DEG C, density unit：g/mL.
Material volume density of the skin care cream in by accurate density pipe, common density pipe using the present embodiment is measured
The density value that method draws and the comparing of the density value drawn using density bottle, density cup and densitometer, are joined
It is shown in Table 3.
Table 3
The general viscosity of skin care cream is larger (viscosity number 30Wmpa.s-100Wmpa.s), using constant temperature (40 DEG C,
8h-24h) natural froth breaking is highly difficult, and densitometer even more can not be used directly.Detected with density bottle and density agar diffusion method,
Show larger deviation.And with accurate density pipe and common density pipe, show measurement higher
Precision.
Contrast test four
The detection of skin care gel density, equal temperature control (20 ± 0.2) DEG C, density unit：g/mL.
Material volume density of the skin care gel in by accurate density pipe, common density pipe using the present embodiment is measured
The density value that method draws and the comparing of the density value drawn using density bottle, density cup and densitometer, are joined
It is shown in Table 4.
Table 4
Skin care gel class cosmetics because make when add larger proportion gel-like raw material thus its viscosity is very big
(viscosity number 80Wmpa.s-200Wmpa.s), does not have substantially using constant temperature (40 DEG C, 8h-24h) nature froth breaking
Effect, density bottle and density cup show larger deviation, and densitometer even more can not be used directly.And
Detected with centrifugal pipe process, process sample using centrifugation because convenient, the bubble basic handling in sample is clean,
Therefore show certainty of measurement higher.
Density pipe 10 of the present invention, there is provided body 100, pipe close 200 and cock cap 300, body 100
Interior for containing material body to be centrifuged, the internal diameter of openend 120 of body 100 gradually increases from the inside to the outside, material
Body can be easily filled with adding to body 100.Density pipe 10 of the present invention, openend 120
Internal diameter gradually increases from the inside to the outside, rather than the mode that increases again of diminishing that first closes up of existing density pipe, opening
The purpose that gradually increases from the inside to the outside of internal diameter at end 120 be advantageous for expecting in body 100 internal bubble from
Thoroughly it is spilled over to more than liquid level during the heart, without still having residual in vivo in material.Density pipe of the present invention
10, overflow channel 230 is provided with pipe close 200, material body is processed in body 100 by high speed centrifugation,
Bubble in material body quickly thoroughly can be spilled over to ullage in vivo from material, and the bubble of ullage can lead to
In the accommodating cavity that the overflow channel 230 crossed on pipe close 200 enters between cock cap 300 and pipe close 200, this hair
The bright density pipe 10 being related to can will expect that internal bubble is thoroughly removed totally in a short time, and be expelled to pipe
Outward.
Material volume density measuring method of the present invention, there is provided density pipe 10, is effectively disappeared by density pipe 10
Except the bubble in material body, while directly being used by density pipe 10 because the material body after centrifugal treating is not required to transfer
In density measure, it is to avoid secondary to bring air into.Through repeatedly on probation, as a result show that the method is produced to toughness
The measurement relative deviation of product relative density is smaller, certainty of measurement is high, and because eliminate conventional foam time (>12h)
And make greatly reduction the time required to whole detection (single sample can be controlled in detection in 1h)；Simultaneously because of density
The small volume of pipe 10, in the case where the quantity of density pipe 10 is permitted, disposable sample quantity is up to more than 36.
Material volume density measuring method of the present invention, is ensureing that inspection operating efficiency is also obtained certainty of measurement simultaneously
It is greatly improved.
Each technical characteristic of embodiment described above can be combined arbitrarily, not right to make description succinct
The all possible combination of each technical characteristic in above-described embodiment is all described, as long as however, these skills
The combination of art feature does not exist contradiction, is all considered to be the scope of this specification record.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed,
But therefore can not be interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that for this area
Those of ordinary skill for, without departing from the inventive concept of the premise, can also make it is some deformation and
Improve, these belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended
Claim is defined.
Claims (7)
1. it is a kind of to expect volume density measuring method, it is characterised in that to comprise the following steps：
(1) two density pipes, the density pipe, including body and pipe close are taken；The end closure of the body one
Blind end is formed, another end opening forms openend, and the internal diameter of the openend gradually increases from the inside to the outside,
The inwall of the openend is in frosted shape；The outer wall of the pipe close is in frosted shape, the size of the pipe close outer wall
It is gradually reduced by one end to relative one end and is matched with the openend for sealing, the pipe close has is used
In for expecting the overflow channel that the bubble and/or material body of body overflow in the body, the overflow channel is through described
The two ends of pipe close, when the pipe close is matched with the openend, the one end open direction of the overflow channel
In in the body, another end opening is toward outside the body；
The body and pipe close are cleaned, is dried；Density pipe every described is weighed, the density
The weight of pipe is designated as M0；
(2) body of a density pipe is built-in wherein expires titer, covers the pipe close, will
The density pipe is placed in isoperibol after note titer, and the temperature of isoperibol is higher than the standard in density pipe
The original temperature of liquid, wipes the titer overflowed from the overflow channel of the pipe close away, takes out the density pipe,
Weighed after the liquid for wiping dry outer wall, the weight of the density pipe after note titer is designated as M1；
(3) the material body of density to be measured is filled in the body of another Zhi Suoshu density pipe, is centrifuged, gone
Except the more material body layer of material body surface face bubbles, the pipe close is covered, the density pipe that will inject material body is put
In the isoperibol, the material body overflowed from the overflow channel of the pipe close is wiped away, take out the density
Pipe, is weighed after the liquid for wiping dry outer wall, and the weight of the density pipe after injection material body is designated as M2；
(4) relative density that body is expected in preset temperature is calculated：
D=(M2-M0)/(M1-M0)*ρ0, wherein ρ0It is the density of the titer.
2. material volume density measuring method according to claim 1, it is characterised in that in step (3)
Material body after centrifugation, when expect body liquid level less than the pipe close it is lower along when, then supplement material body to filling
Body is stated, centrifugal treating again under identical centrifugal condition.
3. material volume density measuring method according to claim 1 and 2, it is characterised in that step (1)
Middle titer cleans the body and the pipe close, the body and the pipe close after cleaning,
Naturally dry.
4. material volume density measuring method according to claim 1 and 2, it is characterised in that step (1)
Middle titer cleans the body and the pipe close, is sprayed with the alcohol that volume fraction is 95%, then
Quickly dried up with 50 DEG C -60 DEG C of hot blast.
5. material volume density measuring method according to claim 1 and 2, it is characterised in that the constant temperature
Environment uses water-bath, during water-bath, the mouth of pipe of the liquid level less than the body of water-bath, and the temperature of water-bath is higher than close
The original temperature of the titer in degree pipe.
6. material volume density measuring method according to claim 1 and 2, it is characterised in that during centrifugation
Condition is：3000r/min-4000r/min is centrifuged 5min-10min.
7. material volume density measuring method according to claim 1 and 2, it is characterised in that the density
Pipe also includes cock cap, after the built-in full titers of two bodys and the material body, cover the cock cap and
The cock cap, and by institute two state density pipe and be placed in the isoperibol.
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| RU205571U1 (en) * | 2021-03-12 | 2021-07-21 | Федеральное государственное бюджетное образовательное учреждение высшего образования Санкт-Петербургский государственный университет ветеринарной медицины ФГБОУ ВО СПбГУВМ | Pycnometer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108225976A (en) * | 2018-03-13 | 2018-06-29 | 黑龙江盛世新宇高新技术开发有限公司 | Drilled pile specific gravity of mud measuring device and measuring method |
| CN108225976B (en) * | 2018-03-13 | 2024-02-23 | 黑龙江盛世新宇高新技术开发有限公司 | Device and method for measuring relative density of drilling pile mud |
| RU205571U1 (en) * | 2021-03-12 | 2021-07-21 | Федеральное государственное бюджетное образовательное учреждение высшего образования Санкт-Петербургский государственный университет ветеринарной медицины ФГБОУ ВО СПбГУВМ | Pycnometer |
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| CN106885756B (en) | 2019-09-20 |
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Denomination of invention: Method for measuring density of material body Effective date of registration: 20200526 Granted publication date: 20190920 Pledgee: Guangzhou Baiyun Branch of China Construction Bank Co.,Ltd. Pledgor: GUANGZHOU BESE CLEAN COSMETICS MANUFACTURER Co.,Ltd. Registration number: Y2020980002515 |
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