CN108548838A - A kind of superhigh temperature plastics dimension card and heat distortion test machine - Google Patents
A kind of superhigh temperature plastics dimension card and heat distortion test machine Download PDFInfo
- Publication number
- CN108548838A CN108548838A CN201810267134.8A CN201810267134A CN108548838A CN 108548838 A CN108548838 A CN 108548838A CN 201810267134 A CN201810267134 A CN 201810267134A CN 108548838 A CN108548838 A CN 108548838A
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- furnace body
- measurement
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- heating
- measurement structure
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
- G01N25/04—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering of melting point; of freezing point; of softening point
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
- G01N25/12—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering of critical point; of other phase change
Abstract
The invention discloses a kind of superhigh temperature plastics dimension card and heat distortion test machines, are related to test apparatus field.Including heating furnace, measurement structure, lifting structure, heating furnace bottom is equipped with pumping chamber, and heating tube is set in heating furnace, measurement structure bottom can place sample, measurement structure stretches into heating furnace, temperature in use receptor measuring temperature, and whether lifting structure control measurement structure stretches into heating furnace.By the way that heating tube is closely arranged in furnace body, bottom of furnace body increases pumping chamber, promotes in-furnace temperature, measurement structure is set in furnace body, and multiple measurement monomers coordinate in measurement structure, realize and test the dimension card and heat distortion temperature of superhigh temperature plastics, it is safer more environmentally friendly using alumina powder as heat-conducting medium, using cylindrical furnace, by measurement structure close arrangement so that heat is not easy to lose, and more concentrates, extent of alternating temperature is big, reasonable for structure, easy to operate, accuracy is high.
Description
Technical field
The present invention relates to test apparatus fields, and card and heat distortion test machine are tieed up more particularly to a kind of superhigh temperature plastics.
Background technology
Plastics are the critically important materials of modern society, but most of plastics poor heat resistance, are easy to make property at high operating temperatures
It changes, in plastics before use, needing to measure its heat distortion temperature and Vicat softening point, existing technology, temperature elevating range
In room temperature to 300 degrees Celsius, thus superhigh temperature plastics can not be measured.
Invention content
A kind of superhigh temperature plastics dimension card of present invention offer and heat distortion test machine, machine heating temperature are Celsius up to 500
Degree, can measure the Vicat softening point and heat distortion temperature of superhigh temperature plastics, reasonable for structure.
In order to achieve the above object, a kind of superhigh temperature plastics dimension card and heat distortion test machine of the present invention, using technology below
Scheme：
A kind of superhigh temperature plastics dimension card and heat distortion test machine, including heating furnace, measurement structure, lifting structure, measure knot
Structure is mounted on lifting structure, and measurement structure lower part is stretched into heating furnace；
The heating furnace includes furnace body, and heating chamber is equipped in furnace body, and bottom of furnace body is equipped with pumping chamber, gas is equipped on the outside of furnace body
Pipe, the tracheae connect pumping chamber, and exhaust pipe is equipped on the outside of upper of furnace body, several heating tubes are equipped in the heating chamber in furnace body,
Furnace body inside is equipped with cooling water pipe, the water inlet pipe and outlet pipe of cooperation cooling water pipe is equipped on the outside of furnace body, heating chamber lower part is equipped with
Heat-conducting medium, heating chamber lower part are additionally provided with thermoreceptor, and furnace body top is equipped with dust cover；
The measurement structure includes fixed cover board, the dust cover of the fixed cover board matching furnace body, is set below fixed cover board
There are thermal insulation board, thermal insulation board that sealing plate is arranged below, top is equipped with air cylinder support in the middle part of fixed cover board, and gas is installed on air cylinder support
Cylinder is equipped with load plate between cylinder and fixed cover board, connecting rod is equipped in the middle part of load plate, and the load plate is fixed with connecting rod to be connected
It connecing, connecting rod top is fixedly connected with cylinder output end, if being additionally provided with dry measure monomer in load plate, middle part below fixed cover board
Equipped with heating tube；
The measurement monomer includes upper mounted plate, is equipped with connecting bracket below upper mounted plate, connecting bracket bottom is equipped with down
Platen, upper mounted plate middle part lower section are installed with reference test bar, and reference test bar bottom is equipped with measuring head, and measuring head corresponds on lower platen
Side, measuring head side are equipped with sensing rod for temperature, and top is equipped with pallet in the middle part of upper mounted plate, and pallet is equipped with counterweight, and counterweight bottom is equipped with
Foot is pushed up, top foot corresponds to the top in the middle part of pallet, and counterweight is connected and fixed the load plate on cover board, runs through upper mounted plate at the top of reference test bar
Connecting trays lower end, is additionally provided with measurement holder on upper mounted plate, and the measurement holder is equipped with measuring block, measuring block with measure branch
Frame is slidably connected, and measuring block, which corresponds to, is equipped with displacement measurement head above counterweight.
Further, lifting structure includes riser, and the riser is vertically arranged, and riser side lower is connected with motor frame,
Motor frame is equipped with motor, and elevating lever is additionally provided on motor frame, and elevating lever bottom connects motor output end, and elevating lever side is equipped with
Sliding block, riser side correspond to sliding block and are installed with sliding rail, and sliding block is slidably connected with sliding rail, and elevating lever top is equipped with crane, lifting
Frame is Y-shaped, and crane matches measurement structure.
Further, heat-conducting medium is alumina powder.
Further, the pumping chamber of bottom of furnace body is equipped with air permeable steel plate.
Further, furnace body is cylindrical type, and the fixation cover board in corresponding measurement structure is circle, measures amount of monomer and is
Three.
Further, measuring block side is equipped with clamp nut, is equipped with fine-tuning nut at the top of measuring block, displacement measurement head stretches into
Measuring block, fine-tuning nut connect displacement measurement head.
Further, elevating lever includes lifting shell, and sliding block is mounted on lifting outer side, is equipped with and rises in the middle part of lifting shell
Screw rod drops, and lifting screw is connect with lifting outer casing screw, and lifting screw bottom connects motor output end.
Compared with prior art, the present invention increases pumping chamber, carries by the way that heating tube, bottom of furnace body are closely arranged in furnace body
In-furnace temperature is risen, measurement structure is set in furnace body, multiple measurement monomers coordinate in measurement structure, realize the dimension to superhigh temperature plastics
Card and heat distortion temperature experiment, it is safer more environmentally friendly using alumina powder as heat-conducting medium, it, will using cylindrical furnace
Measurement structure close arrangement so that heat is not easy to lose, and more concentrates, can by heating temperature range in furnace body from room temperature to
300 degrees Celsius are promoted to from room temperature to 500 degrees Celsius, reasonable for structure, easy to operate, and accuracy is high.
Description of the drawings
Fig. 1 show the dimensional structure diagram of the embodiment of the present invention；
Fig. 2 show the cross-sectional view of the embodiment of the present invention；
Fig. 3 show the overlooking structure diagram of heating furnace of the embodiment of the present invention；
Fig. 4 show the structural schematic diagram of A-A sections in Fig. 3；
Fig. 5 show the structural schematic diagram of measurement structure of the embodiment of the present invention；
Fig. 6 show the structural schematic diagram that the embodiment of the present invention measures monomer；
Fig. 7 show the structural schematic diagram of lifting structure of the embodiment of the present invention.
The reference numerals are as follows：
Heating furnace 10, furnace body 11, heating chamber 12, pumping chamber 13, tracheae 14, exhaust pipe 15, heating tube 16, cooling water pipe
17, water inlet pipe 18, outlet pipe 19, heat-conducting medium 20, dust cover 21, measurement structure 30, fixed cover board 31, thermal insulation board 32, sealing
Plate 33, air cylinder support 34, cylinder 35, load plate 36, connecting rod 37, measurement monomer 40, upper mounted plate 41, connecting bracket 42, under
Platen 43, reference test bar 44, measuring head 45, sensing rod for temperature 46, pallet 47, counterweight 48 push up foot 49, measure holder 50, measuring block 51, position
Shift measurement head 52, lifting structure 60, riser 61, motor frame 62, motor 63, elevating lever 64, lifting shell 65, lifting screw 66,
Sliding block 67, sliding rail 68, crane 69, air permeable steel plate 70, clamp nut 71, fine-tuning nut 72, sample 80.
Specific implementation mode
For that can further appreciate that the feature, technological means and the specific purposes reached, function of the present invention, this hair is parsed
Bright advantage and spirit are further understood the detailed description of the present invention with specific implementation mode by below in conjunction with attached drawing.
Attached drawing, a kind of superhigh temperature plastics of the invention dimension card and heat distortion test machine are please referred to, it is super for testing and measuring
The Vicat softening point and heat distortion temperature of high temperature plastics, including heating furnace 10, measurement structure 30, lifting structure 60, measurement structure
30 are mounted on lifting structure 60, and 30 lower part of measurement structure is stretched into heating furnace 10, and sample to be tested is placed on measurement structure 30
Bottom.
Heating furnace 10 includes furnace body 11, and heating chamber 12 is equipped in furnace body 11, and 11 bottom of furnace body is equipped with pumping chamber 13, furnace body 11
Outside is equipped with tracheae 14, and tracheae 14 connects pumping chamber 13, and air subsequently enters heating chamber 12 out of tracheae 14 into pumping chamber 13
In, agitating function is provided for furnace body 11,11 upper outside of furnace body is equipped with exhaust pipe 15, if being equipped in the heating chamber 12 in furnace body 11
Dry heating tube 16,11 inside of furnace body are equipped with cooling water pipe 17 and are equipped with cooperation for controlling 11 heating rate of furnace body, 11 outside of furnace body
The water inlet pipe 18 and outlet pipe 19 of cooling water pipe 17, the present embodiment water inlet pipe 18 are located at 19 lower section of outlet pipe, can promote cooling effect
Rate, 12 lower part of heating chamber be equipped with heat-conducting medium 20, can quick conductive so that in-furnace temperature is reached unanimity, 12 lower part of heating chamber is additionally provided with
Thermoreceptor, can experience in-furnace temperature, and 11 top of furnace body is equipped with dust cover 21.
Measurement structure 30 includes fixed cover board 31, and fixed cover board 31 matches the dust cover 21 of furnace body 11, fixes under cover board 31
Face is equipped with thermal insulation board 32, and sealing plate 33 is arranged below in thermal insulation board 32, and 31 fitted insulation panels 32 of fixed cover board, sealing plate 33 ensure
Measurement structure 30 avoids heat losses, 31 middle part top of fixed cover board from being equipped with air cylinder support 34, cylinder branch after stretching into heating furnace 10
It is installed with cylinder 35 on frame 34, load plate 36 is equipped between cylinder 35 and fixed cover board 31,36 middle part of load plate is equipped with connecting rod
37, load plate 36 is fixedly connected with connecting rod 37, and 37 top of connecting rod is fixedly connected with 35 output end of cylinder, and the control of cylinder 35 connects
Extension bar 37 moves up and down, if being additionally provided with dry measure monomer 40 in load plate 36, measures 40 bottom of monomer and places sample 80, and stretch into
Heating furnace 10 is the important feature of testing machine, and 31 lower section middle part of fixed cover board is equipped with heating tube 16, this heating tube 16 coordinates close
Remaining heating tube 16 of 11 inside of furnace body so that in-furnace temperature is uniform.
It includes upper mounted plate 41 to measure monomer 40, and 41 lower section of upper mounted plate is equipped with connecting bracket 42,42 bottom of connecting bracket
Equipped with lower platen 43,41 middle part lower section of upper mounted plate is installed with reference test bar 44, and 44 bottom of reference test bar is equipped with measuring head 45, test
First 45 correspond to above lower platen 43, and 45 side of measuring head is equipped with sensing rod for temperature 46, and sample 80 is placed on the leave from office under measuring head 45
On plate 43,41 middle part top of upper mounted plate is equipped with pallet 47, and pallet 47 is equipped with counterweight 48, and 48 bottom of counterweight is equipped with top foot 49,
It pushes up foot 49 to correspond to above 47 middle part of pallet, counterweight 48 is for generating pressure so that measuring head 45 pushes, to test sample 80
Vicat softening point, counterweight 48 is connected and fixed the load plate 36 on cover board 31, and load plate 36, which rises landing, can control counterweight 48
Whether push, whether carried out to control to survey, 41 connecting trays of upper mounted plate, 47 lower end, upper fixation are run through in 44 top of reference test bar
It being additionally provided on plate 41 and measures holder 50, measured holder 50 and be equipped with measuring block 51, measuring block 51 is slidably connected with holder 50 is measured,
Measuring block 51 corresponds to 48 top of counterweight and is equipped with displacement measurement head 52, and displacement measurement head 52 measures the variation of 48 displacement of counterweight, this hair
The bright counterweight 48 used is composed for several miniweights, the miniweights that the present embodiment uses include quality for 1 gram, 5 grams, 50
Grams 200 grams, 300 grams, 500 grams, 1000 grams, 2000 grams.Before use, the miniweights for the grams that selection needs as needed.
The lifting structure 60 that the present embodiment uses includes riser 61, and riser 61 is vertically arranged, the connection of 61 side lower of riser
There are motor frame 62, motor frame 62 to be equipped with motor 63, elevating lever 64 is additionally provided on motor frame 62,64 bottom of elevating lever connects motor
63 output ends, 64 side of elevating lever are equipped with sliding block 67, and 61 side of riser corresponds to sliding block 67 and is installed with sliding rail 68, sliding block 67 and sliding rail
68 are slidably connected, and 64 top of elevating lever is equipped with crane 69, and crane 69 is Y-shaped, and crane 69 matches measurement structure 30.
To promote heat-conducting effect so that the temperature in heating furnace 10 reaches unanimity, and heat-conducting medium 20 is alumina powder, oxygen
Change aluminium powder and compare traditional silicone oil, there is the better feature of environmental protection and safety.
To promote the mobility of heat-conducting medium 20, the pumping chamber 13 of 11 bottom of furnace body is equipped with air permeable steel plate 70, and air stirs
That mixes is better.
The present embodiment furnace body 11 is cylindrical type, and the fixation cover board 31 in corresponding measurement structure 30 is circle, measures monomer
40 quantity are three, measure connecting rod 37 of the monomer 40 in measurement structure 30 and uniformly place, three measurements being closely arranged
Monomer 40 can be conveniently used for measuring the deformation temperature of the bending stress under 3 loadings.
51 side of measuring block is equipped with clamp nut 71 in the present embodiment, and 51 top of measuring block is equipped with fine-tuning nut 72, compresses
Measuring block 51 can be fixed on test bracket by nut 71, and displacement measurement head 52 stretches into measuring block 51,72 connection position of fine-tuning nut
Shift measurement head 52,72 displacement-adjustable measurement head of fine-tuning nut, 52 position, to coordinate sample 80 with different thickness.
The elevating lever 64 of the present embodiment includes lifting shell 65, and sliding block 67 is mounted on 65 outside of lifting shell, lifts shell
65 middle parts are equipped with lifting screw 66, and lifting screw 66 is threadedly coupled with lifting shell 65, and 66 bottom of lifting screw connects motor 63
Output end, motor 63 drive lifting screw 66 to rotate, and are moved up and down to control lifting shell 65.
Heating furnace 10 and lifting structure 60 in the specific use process, are first placed on suitable supporting rack by the present invention, control
Lifting structure 60 processed detaches test structure and heating furnace 10, is placed on the lower platen 43 of the test unit bottom of test structure
Sample 80, for measuring head 45 since gravity is tightly attached on sample 80, the counterweight 48 of measurement monomer 40 at this time is placed on measurement structure
In load plate 36 in 30, the load plate 36 under cylinder 35 controls is in lifting status, and counterweight 48 and pallet 47 detach.In this reality
It applies in example, starts the motor 63 in lifting structure 60, motor 63 drives elevating lever 64 to move down, lifted in lifting structure 60
Measurement structure 30 on frame 69 moves down, and 30 lower part of measurement structure is stretched into heating furnace 10, the upper fixed cover board in measurement structure 30
31 fitted insulation panels 32 and sealing plate 33 so that measurement structure 30 is fitted close with heating furnace 10, the external sky of subsequent start-up
Air pressure compression apparatus is provided pressure-air to the pumping chamber 13 of 10 lower section of heating furnace, is formed pressurized air stream, increased by air inlet pipe 14
Pressure gas stream coordinates air permeable steel plate 70, and the alumina powder in heating chamber 12 is stirred, then, screws the pressure on test unit
Tight nut 71, the position of displacement measurement head 45 is adjusted by fine-tuning nut 72, starts cylinder 35, and cylinder 35 puts down load plate 36,
So that the counterweight 48 in load plate 36 is fallen, the top foot 49 of counterweight 48 is fallen on pallet 47, is started heating tube 16, is beaten simultaneously
The water inlet pipe 18 outside heating furnace 10 is opened, cooling water flows into, and the thermoreceptor under heating chamber 12 experiences in-furnace temperature, operator's root
16 heating power of heating tube is controlled according to the temperature, ensures constant-speed heating, and in heating process, measuring head 45 is acted in counterweight 48
Under, constantly to 80 times compressive strains of sample, the area of section of measuring head 45 is one square millimeter, constantly after heating, reads displacement and surveys
52 numerical value of head is measured, when displacement reaches one millimeter, that is to say, after measuring head 45 pushes one millimeter in use, reads and measures at this time
The temperature that sensing rod for temperature 46 in monomer 40 measures, which is exactly Vicat softening point, also can three measure monomers 40 and coordinate, measure
Deformation temperature of the sample 80 under application of load (bending stress under 3 loadings).After being measured, heating tube 16 is closed, and empty
Air compressor, cooling water continue to flow into, and the temperature in heating furnace 10 is reduced to room temperature, close cooling water and flow into, control cylinder
35 lift load plate 36, and control motor 63 lifts measurement structure 30, and measurement structure 30 is detached with heating furnace 10, is taken out and is replaced
Sample 80.And repeatable above-mentioned steps.Exhaust gas during experiment is discharged by exhaust pipe 15, and the exhaust end of exhaust pipe 15 can connect
Connect emission-control equipment.
Some embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Cannot limitation of the scope of the invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art,
Without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection model of the present invention
It encloses.Therefore, protection scope of the present invention should be determined by the appended claims.
Claims (7)
1. a kind of superhigh temperature plastics dimension card and heat distortion test machine, which is characterized in that including heating furnace (10), measurement structure
(30), lifting structure (60), measurement structure (30) are mounted on lifting structure (60), and heating furnace is stretched into measurement structure (30) lower part
(10) in；
The heating furnace (10) includes furnace body (11), and heating chamber (12) is equipped in furnace body (11), and furnace body (11) bottom is equipped with supercharging
Room (13), furnace body (11) outside are equipped with tracheae (14), and the tracheae (14) connects pumping chamber (13), and furnace body (11) upper outside is set
There is exhaust pipe (15), several heating tubes (16) are equipped in the heating chamber (12) in furnace body (11), cooling is equipped on the inside of furnace body (11)
Water pipe (17), furnace body (11) outside are equipped with the water inlet pipe (18) and outlet pipe (19) of cooperation cooling water pipe (17), heating chamber (12)
Lower part is equipped with heat-conducting medium (20), and heating chamber (12) lower part is additionally provided with thermoreceptor, and furnace body (11) top is equipped with dust cover
(21)；
The measurement structure (30) includes fixed cover board (31), the dust cover of fixed cover board (31) the matching furnace body (11)
(21), thermal insulation board (32) is arranged below in fixed cover board (31), and sealing plate (33), fixed cover board (31) is arranged below in thermal insulation board (32)
It is equipped with air cylinder support (34) above middle part, cylinder (35), cylinder (35) and fixed cover board (31) are installed on air cylinder support (34)
Between be equipped with load plate (36), connecting rod (37) is equipped in the middle part of load plate (36), the load plate (36) is fixed with connecting rod (37)
Connection, connecting rod (37) top is fixedly connected with cylinder (35) output end, load plate (36) if on be additionally provided with dry measure monomer
(40), middle part is equipped with heating tube (16) below fixed cover board (31)；
The measurement monomer (40) includes upper mounted plate (41), and connecting bracket (42), connection branch are equipped with below upper mounted plate (41)
Frame (42) bottom is equipped with lower platen (43), and lower section is installed with reference test bar (44), reference test bar (44) bottom in the middle part of upper mounted plate (41)
Equipped with measuring head (45), measuring head (45) is corresponding above lower platen (43), and measuring head (45) side is equipped with sensing rod for temperature (46), on
Top is equipped with pallet (47) in the middle part of fixed plate (41), and pallet (47) is equipped with counterweight (48), and counterweight (48) bottom is equipped with top foot
(49), top foot (49) corresponding top, counterweight (48) in the middle part of pallet (47) is connected and fixed the load plate (36) on cover board (31), surveys
Run through upper mounted plate (41) connecting trays (47) lower end at the top of test bar (44), upper mounted plate is additionally provided with measurement holder on (41)
(50), the measurement holder (50) is equipped with measuring block (51), and measuring block (51) is slidably connected with holder (50) is measured, measuring block
(51) it is equipped with displacement measurement head (52) above corresponding counterweight (48).
2. according to a kind of superhigh temperature plastics dimension card and heat distortion test machine described in claim 1, which is characterized in that the liter
It includes riser (61) to drop structure (60), and the riser (61) is vertically arranged, and riser (61) side lower is connected with motor frame (62),
Motor frame (62) is equipped with motor (63), and elevating lever (64) is additionally provided on motor frame (62), and elevating lever (64) bottom connects motor
(63) output end, elevating lever (64) side are equipped with sliding block (67), and riser (61) side corresponds to sliding block (67) and is installed with sliding rail (68),
Sliding block (67) is slidably connected with sliding rail (68), and elevating lever (64) top is equipped with crane (69), and crane (69) is Y-shaped, rises
It drops frame (69) and matches measurement structure (30).
3. according to a kind of superhigh temperature plastics dimension card and heat distortion test machine described in claim 1, which is characterized in that described to lead
Thermal medium (20) is alumina powder.
4. according to a kind of superhigh temperature plastics dimension card and heat distortion test machine described in claim 1, which is characterized in that the stove
The pumping chamber (13) of body (11) bottom is equipped with air permeable steel plate (70).
5. according to a kind of superhigh temperature plastics dimension card and heat distortion test machine described in claim 1, which is characterized in that the stove
Body (11) is cylindrical type, and the fixation cover board (31) in corresponding measurement structure (30) is circle, and it is three to measure monomer (40) quantity
It is a.
6. according to a kind of superhigh temperature plastics dimension card and heat distortion test machine described in claim 1, which is characterized in that the survey
Gauge block (51) side is equipped with clamp nut (71), is equipped with fine-tuning nut (72) at the top of measuring block (51), displacement measurement head (52) is stretched
Enter measuring block (51), fine-tuning nut (72) connects displacement measurement head (52).
7. according to a kind of superhigh temperature plastics dimension card and heat distortion test machine described in claim 2, which is characterized in that the liter
It includes lifting shell (65) to drop bar (64), and sliding block (67) is mounted on the outside of lifting shell (65), is equipped in the middle part of lifting shell (65)
Lifting screw (66), lifting screw (66) are threadedly coupled with lifting shell (65), and lifting screw (66) bottom connects motor (63)
Output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810267134.8A CN108548838A (en) | 2018-03-28 | 2018-03-28 | A kind of superhigh temperature plastics dimension card and heat distortion test machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810267134.8A CN108548838A (en) | 2018-03-28 | 2018-03-28 | A kind of superhigh temperature plastics dimension card and heat distortion test machine |
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| Publication Number | Publication Date |
|---|---|
| CN108548838A true CN108548838A (en) | 2018-09-18 |
Family
ID=63517176
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|---|---|---|---|
| CN201810267134.8A Pending CN108548838A (en) | 2018-03-28 | 2018-03-28 | A kind of superhigh temperature plastics dimension card and heat distortion test machine |
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