CN208888167U - A kind of asphalt vitrification transition temperature test specimen molding device based on dynamic mechanical analysis - Google Patents
A kind of asphalt vitrification transition temperature test specimen molding device based on dynamic mechanical analysis Download PDFInfo
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- CN208888167U CN208888167U CN201820916168.0U CN201820916168U CN208888167U CN 208888167 U CN208888167 U CN 208888167U CN 201820916168 U CN201820916168 U CN 201820916168U CN 208888167 U CN208888167 U CN 208888167U
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- side mould
- hole
- internal model
- rear side
- front side
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- 238000012360 testing method Methods 0.000 title claims abstract description 33
- 238000000465 moulding Methods 0.000 title claims abstract description 20
- 239000010426 asphalt Substances 0.000 title claims abstract description 15
- 230000007704 transition Effects 0.000 title claims abstract description 12
- 238000004017 vitrification Methods 0.000 title claims abstract description 11
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000009477 glass transition Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 241001274660 Modulus Species 0.000 description 1
- 229920006125 amorphous polymer Polymers 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000013001 point bending Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a kind of asphalt vitrification transition temperatures based on dynamic mechanical analysis to test specimen molding device, is related to asphalt vitrification transition temperature testing field.The molding machine includes the identical front side mould of structure and rear side mould and internal model, it is arranged in the internal model fluted, the left and right sides and downside of the groove are each provided with a through-hole, the front side mould and rear side mould are again provided with through-hole on position corresponding with through-hole in the internal model, through-hole in internal model is identical as the diameter of through-hole on the front side mould and rear side mould, there are three double threaded screw settings, the both ends of double threaded screw are located at the outside of the molding machine, and its both ends is provided with the nut being threadedly coupled with it, by the screw rod and nut by front side mould, rear side mould and internal model are secured together.
Description
Technical field
The utility model relates to asphalt vitrification transition temperature testing fields, more particularly to one kind to be based on dynamic mechanical
The asphalt vitrification transition temperature of analysis tests specimen molding device.
Background technique
Glass transition temperature (Tg) is transformation of the amorphous polymers from elastomeric state to glassy state, in glass transformation temperature
Hereinafter, macromolecular chain and segment cannot move in pitch, the atom or group for simply forming molecule in balance vibration, so as to cause
Asphalt performance mutates, and shows black brittleness.So using the low temperature properties of glass transition temperature evaluation regeneration asphalt
Can, it is more scientific, accurate compared to Conventional cryogenic ductility.
The common test method of high molecular polymer glass transition temperature has dilatometric method, Refractive Index Method, thermomechanometry
(temperature-deformation method), DTA method (DSC), dynamic mechanical analytic approach (DMA).Pitch is a kind of by the hydrocarbon of different molecular weight
The dark brown complex mixture of compound and its non metallic derivatives composition, common DSC method is for pitch and insensitive, glass
Thermal capacitance variation before and after change transition temperature is not obvious.Dynamic mechanical analysis (DMA) method is to apply permanent vibration to test sample
The sinusoidal alternating stress of width, observation strain is with temperature or the changing rule of time, so that Computational Mechanics parameter is viscous to characterize material
A kind of method of elasticity.In glass transition region, storage modulu sharply drops to more stable platform, loss modulus and loss
The factor all forms crest.This method is to occurring sensitive 10~100 times of induction degree ratio DSC at glass transition temperature, for surveying
Determine the glass transition temperature strong applicability of pitch.The glass transition temperature figure that pitch is measured at 10Hz is as shown in Figure 2.
The measurement common loading method of polymeric glass transition temperature has three-point bending, and single-cantilever is needed sample system
Standby growth × width x thickness=80mm × 8mm × 5mm strip test specimen, since pitch is solid-state at normal temperature, existing mold without
Pitch is prepared into required size by method.
Utility model content
Technical problem to be solved in the utility model is how to provide that a kind of structure is simple, the accurate in size pitch of sample preparation
Glass transition temperature tests specimen molding device.
In order to solve the above technical problems, technical solution adopted in the utility model is: one kind being based on dynamic mechanical
The asphalt vitrification transition temperature of analysis tests specimen molding device, it is characterised in that: including the identical front side mould of structure with after
Side form and internal model, are arranged in the internal model fluted, and the left and right sides and downside of the groove are each provided with a through-hole,
The front side mould and rear side mould are again provided with through-hole on position corresponding with through-hole in the internal model, logical in internal model
Hole is identical as the diameter of through-hole on the front side mould and rear side mould, and there are three double threaded screw settings, before sequentially passing through respectively
The through-hole on the through-hole and rear side mould on through-hole, internal model on side form, the both ends of double threaded screw are located at the molding machine
Outside, and its both ends is provided with the nut being threadedly coupled with it, by the screw rod and nut by front side mould, rear side mould and
Internal model is secured together, and the space enclosed between the groove and front side mould and rear side mould in the internal model is test examination
The molding space of part.
It is stainless steel steel disc a further technical solution lies in: the front side mould and rear side mould, length × width x thickness=
120mm×35mm×5mm。
A further technical solution lies in: the internal model is stainless in a length × width x thickness=120mm × 35mm × 5mm
A groove is opened in steel steel plate middle, and groove size is length × width x thickness=80mm × 8mm × 5mm.
A further technical solution lies in: the diameter of the through-hole in the front side mould, rear side mould and internal model is 8mm.
The beneficial effects of adopting the technical scheme are that device described in the utility model uses stainless steel
Make, can be heated in 200 DEG C or so high temperature ovens, avoidable heated bitumen is intermediate after pouring to bring bubble into；Described device can basis
Actual tests need, and flexibly increase or decrease number of molds, form required amount of gang mould, and disposable sample of completing pours；Before
It is connected together by screw rod with nut between side form, rear side mould and internal model, it is easy to disassemble, it can not be taken after avoiding sample from pouring
Out；In addition, described device can also replace the internal model with different sized recess, prepare various sizes of drip according to test requirements document
Green test specimen, it is easy to use.
Detailed description of the invention
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
Fig. 1 is the schematic view of the front view of the utility model embodiment described device；
Fig. 2 is the overlooking structure diagram (including multiple groups internal model) of the utility model embodiment described device；
Fig. 3 is the decomposition texture schematic diagram of the utility model embodiment described device；
Fig. 4 is the structural schematic diagram of the test specimen of the utility model embodiment described device preparation；
Fig. 5 is test structure chart；
Wherein: 1, front side mould 2, rear side mould 3, internal model 4, groove 5, through-hole 6, double threaded screw 7, nut 8, test test specimen.
Specific embodiment
Below with reference to the attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu is fully described by, it is clear that and described embodiment is only a part of the embodiment of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Many details are explained in the following description in order to fully understand the utility model, but this is practical new
Type can also be implemented using other than the one described here other way, and those skilled in the art can be without prejudice to this reality
With doing similar popularization in the case where novel intension, therefore the utility model is not limited by the specific embodiments disclosed below.
As shown in Figure 1-Figure 3, the utility model embodiment discloses a kind of pitch glass based on dynamic mechanical analysis
Glass transition temperature test specimen molding device, including the identical front side mould 1 of structure and rear side mould 2 and internal model 3.The internal model
Upper setting fluted 4, the left and right sides and downside of the groove 4 are each provided with a through-hole 5, the front side mould 1 and after
Side form 2 is again provided with through-hole 5 on position corresponding with through-hole 5 in the internal model 3, the through-hole in internal model 3 and it is described before
The diameter of side form 1 and the through-hole on rear side mould 2 is identical, and there are three the settings of double threaded screw 6, is sequentially passed through on the mould 1 of front side respectively
Through-hole, the through-hole in internal model 3 and the through-hole on rear side mould 2, the both ends of double threaded screw 6 are located at the outer of the molding machine
Side, and its both ends is provided with the nut 7 being threadedly coupled with it, by the screw rod and nut by front side mould 1, rear side mould 2 with
And internal model 3 is secured together, the space enclosed between the groove and front side mould 1 and rear side mould 2 in the internal model 3 is described
Test the molding space of test specimen.
Further, forward and backward side form is stainless steel steel disc, the size of front side mould 1 and rear side mould 2 be length × width x thickness=
120mm×35mm×5mm.Internal model 3 is one having a size of length × width x thickness=120mm × 35mm × 5mm stainless-steel sheet center
Between open a groove, groove size is length × width x thickness=80mm × 8mm × 5mm.On all front side moulds 1, internal model 3 and rear side mould 2
Through-hole diameter is 8mm.
Double threaded screw 6 matches with hex nut, and double threaded screw 6 is M8*40-100, nut M8,6 length of double threaded screw
How much can be determined according to one-pass molding test specimen.
In use, the device is assemblied together, need to pitch to be tested be heated to fluid state, matrix pitch is
135 DEG C, SBS modified pitch is 163 DEG C.The pitch heated is poured into mold groove one by one, only to no mistake described device
Highest point 1mm.The molding machine poured is horizontally arranged in baking oven, oven temperature and heating pour the one of preceding pitch
It causes.It is taken out after placing 30min in baking oven, places room temperature cooling, sample is taken out when only extremely to be measured, obtain sample as shown in figure 4, surveying
Test result is as shown in Figure 5.
Device described in the utility model is made of stainless steel, can be heated in 200 DEG C or so high temperature ovens, can avoid heat drip
Blueness is intermediate after pouring to bring bubble into；Described device can flexibly increase or decrease number of molds according to actual tests needs, be formed
Required amount of gang mould, disposable sample of completing pour；It is connected between front side mould, rear side mould and internal model by screw rod and nut
Together, easy to disassemble, it can not be taken out after avoiding sample from pouring；In addition, described device can also be according to test requirements document, replacing has not
With the internal model of sized recess, various sizes of asphalt test piece is prepared, it is easy to use.
Claims (4)
1. a kind of asphalt vitrification transition temperature based on dynamic mechanical analysis tests specimen molding device, feature exists
In: including the identical front side mould (1) of structure and rear side mould (2) and internal model (3), it is arranged fluted (4) in the internal model, it is described
The left and right sides and downside of groove (4) be each provided with a through-hole (5), the front side mould (1) and rear side mould (2) with institute
It states and is again provided with through-hole (5) on the corresponding position of through-hole (5) on internal model (3), the through-hole in internal model (3) and the front side mould
(1) diameter of the through-hole and on rear side mould (2) is identical, and there are three double threaded screw (6) settings, sequentially passes through front side mould respectively
(1) through-hole on the through-hole and rear side mould (2) on through-hole, internal model (3) on, the both ends of double threaded screw (6) be located at it is described at
The outside of type device, and its both ends is provided with the nut (7) being threadedly coupled with it, by the screw rod and nut by front side mould
(1), rear side mould (2) and internal model (3) are secured together, groove and front side mould (1) and rear side mould on the internal model (3)
(2) space enclosed between is the molding space of the test test specimen.
2. the asphalt vitrification transition temperature test specimen molding dress based on dynamic mechanical analysis as described in claim 1
It sets, it is characterised in that: the front side mould (1) and rear side mould (2) are stainless steel steel disc, length × width x thickness=120mm × 35mm
×5mm。
3. the asphalt vitrification transition temperature test specimen molding dress based on dynamic mechanical analysis as described in claim 1
It sets, it is characterised in that: the internal model (3) is in a length × width x thickness=120mm × 35mm × 5mm stainless-steel sheet middle
A groove is opened, groove size is length × width x thickness=80mm × 8mm × 5mm.
4. the asphalt vitrification transition temperature test specimen molding dress based on dynamic mechanical analysis as described in claim 1
It sets, it is characterised in that: the diameter of the through-hole (5) in the front side mould (1), rear side mould (2) and internal model (3) is 8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820916168.0U CN208888167U (en) | 2018-06-13 | 2018-06-13 | A kind of asphalt vitrification transition temperature test specimen molding device based on dynamic mechanical analysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820916168.0U CN208888167U (en) | 2018-06-13 | 2018-06-13 | A kind of asphalt vitrification transition temperature test specimen molding device based on dynamic mechanical analysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208888167U true CN208888167U (en) | 2019-05-21 |
Family
ID=66505439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820916168.0U Expired - Fee Related CN208888167U (en) | 2018-06-13 | 2018-06-13 | A kind of asphalt vitrification transition temperature test specimen molding device based on dynamic mechanical analysis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208888167U (en) |
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2018
- 2018-06-13 CN CN201820916168.0U patent/CN208888167U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190521 |