CN211453183U - Plastic tensile creep testing device under corrosive environment - Google Patents
Plastic tensile creep testing device under corrosive environment Download PDFInfo
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- CN211453183U CN211453183U CN201922239800.XU CN201922239800U CN211453183U CN 211453183 U CN211453183 U CN 211453183U CN 201922239800 U CN201922239800 U CN 201922239800U CN 211453183 U CN211453183 U CN 211453183U
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Abstract
The utility model relates to a tensile creep testing arrangement of plastics under corrosive environment, the device including the base that has the stand, rotatable setting at the lever on stand upper portion, set up at the stress control assembly of lever left end below, set up at the tensile subassembly of corrosive environment plastics of lever right-hand member below and set up in the lever left side and be used for measuring the amesdial of waiting to detect sample creep volume, this amesdial fixed mounting is on the stand, its thimble and lever contact, compare with prior art, the utility model has the advantages of simple effective, easily operation, control are accurate, corrosion testing environment is stable.
Description
Technical Field
The utility model belongs to the technical field of the material capability test and specifically relates to a tensile creep testing arrangement of plastics under corrosive environment is related to.
Background
The plastic has excellent corrosion resistance and adhesion resistance, and is often used as a lining of chemical equipment or pure plastic equipment under strong corrosive media such as sulfuric acid, hydrochloric acid and the like. The production process is always under the conditions of high temperature and high pressure, the plastic gradually generates creep phenomena under the long-term action, and the long-term creep action causes the plastic to gradually deform and even break, thereby influencing the use safety of equipment.
Temperature, stress, and the corrosive environment in which the plastic is exposed are important factors that affect the creep characteristics of the plastic. At present, creep testing devices for plastics are mostly carried out in a non-corrosive environment (such as air), and the creep performance research reference value of plastics and plastic lining equipment is low. The creep performance test is also carried out after the plastic sample is soaked in a corrosive medium for a certain time, and as the creep gradually develops, gaps among plastic molecules gradually increase, so that the corrosive medium gradually permeates into the plastic, which is a dynamic process and has important influence on the development of the creep. Therefore, material creep studies for plastics and plastic-lined equipment are carried out in corrosive media. In addition, at higher temperatures, the corrosive medium gradually volatilizes, resulting in a change in the concentration of the medium and also in large deviations in the creep test results.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a tensile creep testing arrangement of plastics under corrosive environment in order to overcome the defect that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme:
the utility model provides a tensile creep testing arrangement of plastics under corrosive environment, the device includes the base that has the stand, rotatable setting at the lever on stand upper portion, set up the stress adjustment subassembly in lever left end below, set up the tensile subassembly of corrosive environment plastics below the lever right-hand member and set up the amesdial that is used for measuring the sample creep variable of waiting to detect on the lever left side, this amesdial fixed mounting is on the stand, its thimble and lever contact.
Corrosive environment plastics tensile component include by supreme constant temperature pan, the top that sets gradually down be equipped with the anticorrosion container of sealed lid and install and cover sealed and be used for preventing the volatile condenser of corrosive medium, the anticorrosion container in be equipped with corrosive medium, wait to detect the sample and fix and dip in corrosive medium through last anchor clamps and lower anchor clamps respectively, last anchor clamps pass sealed lid and condenser in proper order through last connecting rod and be connected with the fixed block of lever right-hand member department, lower anchor clamps fix in the anticorrosion container bottom through lower connecting rod.
The sealing cover and the anti-corrosion container are made of glass, ceramics, plastics or steel-lined plastics, the plastics comprise polyolefin plastics including polyethylene and polypropylene, and the vinyl plastics specifically comprise polyvinyl chloride, polystyrene and acrylonitrile-butadiene-styrene copolymer;
the fluoroplastic specifically comprises polytetrafluoroethylene, polyvinylidene fluoride and a perfluoroethylene-propylene copolymer;
the thermosetting plastic specifically includes epoxy resin, phenol resin, unsaturated polyester resin.
The corrosive medium includes aqueous solutions of inorganic acids such as hydrochloric acid, sulfuric acid, nitric acid and phosphoric acid, and organic acids and aqueous solutions thereof in which formic acid, acetic acid, oxalic acid, propionic acid, malonic acid, butyric acid and succinic acid cannot dissolve the sample.
The sealing cover consists of an annular cover body and a cylindrical joint, wherein the upper surface of the cylindrical joint is provided with a grinding opening for butting the lower end of the condenser, and the center of the cylindrical joint is also provided with a through hole for penetrating through the upper connecting rod.
The annular cover body is sealed with the anti-corrosion container through a rubber sealing ring.
The condenser is a straight condensing pipe, a snakelike condensing pipe or a spherical condensing pipe.
The anti-corrosion container is placed in a thermostat pot, and a heating medium of the thermostat pot comprises water, oil or salt.
The stress adjusting component is a weight, and the weight is hung on the fixing block at the left end of the lever through a hook.
And a balance weight for balancing the device in an initial state is arranged on the right end face of the lever.
The upper clamp, the upper connecting rod, the lower clamp and the lower connecting rod are steel skeleton plastic pieces.
Compared with the prior art, the utility model has the advantages of it is following:
the testing device is simple, effective and easy to operate;
secondly, the temperature and the stress can be accurately controlled, and the error is small;
and thirdly, at a higher temperature, the volatilized medium is condensed and reflows under the action of the condensing device, so that the concentration of the corrosive medium is kept unchanged basically, and the stability of a corrosion test environment is ensured.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein: 1. the device comprises a lever, 2, a weight, 3, a dial indicator, 4, a balance weight, 5, a condenser, 6, a sealing cover, 7, an anti-corrosion container, 8, a constant temperature pan, 91, an upper clamp, 92, a lower clamp, 10, a sample, 11 and a base.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Example (b):
as shown in figure 1, the utility model provides a can test device of the tensile creep performance of plastics under different temperature, different corrosivity medium, including thick stick 1, the weight 2 that is used for adjusting the stress size, be used for measuring the amesdial 3, the counter weight 4 of creep volume, prevent that the medium volatilizees condenser 5, sealed lid 6, the anticorrosion container 7 of splendid attire corrosivity medium, thermostat 9, anchor clamps, wait to detect sample 10 and base 11.
The device adopts a lever ratio of 1 lever of 1:5, a weight 2 for adjusting the stress is connected with the lever 1 by a hook, an ejector pin of a dial indicator 3 is contacted with the lever and is used for measuring the creep amount of plastics under the weight of the weight, a balance weight 4 is arranged on the right end surface of the lever and is used for adjusting the device balance under the initial state, a constant temperature pot 8 is used for heating and insulating an anti-corrosion container 7 and is used for heating a medium, a fixed lower clamp 92 is arranged at the bottom of the anti-corrosion container 7 and is used for clamping the lower part of a sample 10, an upper clamp 91 extending into the anti-corrosion container 7 is connected on a fixed block at the right end of the lever 1 through an upper connecting rod and is used for clamping the upper part of the sample 10, a sealing cover 6 with a ground opening is arranged at the opening part of the anti-corrosion container 7, the sealing cover 6 consists of a, the center of the shell is also provided with a through hole for penetrating the upper connecting rod, the annular cover body and the anti-corrosion container 7 are sealed by a rubber gasket, and the grinding opening of the cylindrical joint is connected with the condenser 5.
When the testing device is used, a measurer fixes a sample 10 in the anti-corrosion container 7 through the upper clamp and the lower clamp, injects corrosive media into the anti-corrosion container 7, covers the sealing cover 6 and then connects the condensing device 5, adjusts the balance weight 4 to enable the lever 1 to be horizontal, heats the thermostatic pot 8 to a testing temperature and opens the condenser, hangs the weight 2 at the left end of the lever 1 until the stress required by the testing is met, carries out creep testing, and obtains a creep variable through the dial indicator 3.
Claims (8)
1. The utility model provides a tensile creep testing arrangement of plastics under corrosive environment, a serial communication port, the device is including base (11) that has the stand, rotatable setting is in lever (1) on stand upper portion, the stress adjustment subassembly of setting below lever (1) left end, the tensile subassembly of corrosive environment plastics of setting below lever (1) right-hand member and set up in lever (1) left side and be used for measuring amesdial (3) of waiting to detect sample creep volume, this amesdial (3) fixed mounting is on the stand, its thimble and lever (1) contact.
2. The plastic tensile creep testing device under the corrosive environment according to claim 1, characterized in that the plastic tensile assembly under the corrosive environment comprises a constant temperature pot (8), an anti-corrosion container (7) with a sealing cover (6) at the top and a condenser (5) arranged on the sealing cover (6) for preventing the volatilization of the corrosive medium, wherein the constant temperature pot (8), the sealing cover (6) at the top and the condenser (5) are sequentially arranged from bottom to top, the corrosive medium is arranged in the anti-corrosion container (7), the sample to be tested is fixed and immersed in the corrosive medium through an upper clamp (91) and a lower clamp (92), the upper clamp (91) sequentially penetrates through the sealing cover (6) and the condenser (5) through an upper connecting rod and then is connected with a fixing block at the right end of the lever (1), and the lower clamp (92) is fixed at the bottom of the anti-corrosion container (.
3. The plastic tensile creep testing device under the corrosive environment of claim 2, wherein the sealing cover (6) is composed of a ring-shaped cover body and a cylindrical joint, the upper surface of the cylindrical joint is provided with a grinding opening for butting the lower end of the condenser (5), and the center of the cylindrical joint is also provided with a through hole for penetrating through the upper connecting rod.
4. The plastic tensile creep testing device under a corrosive environment according to claim 3, wherein the annular cover body is sealed with the corrosion-proof container (7) through a rubber sealing ring.
5. The apparatus for testing plastic tensile creep in corrosive environment according to claim 2, wherein the condenser (5) is a straight condenser tube, a serpentine condenser tube or a spherical condenser tube.
6. The plastic tensile creep testing device under a corrosive environment according to claim 2, wherein the corrosion-proof container (7) is placed in a constant temperature pan (8), and the heating medium of the constant temperature pan (8) comprises water, oil or salt.
7. The plastic tensile creep testing device under the corrosive environment of claim 1, wherein the stress adjusting component is a weight (2), and the weight (2) is hung on a fixed block at the left end of the lever (1) through a hook.
8. The plastic tensile creep testing device under the corrosive environment of claim 1, wherein the right end face of the lever (1) is provided with a balance weight (4) for adjusting the balance of the device in the initial state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922239800.XU CN211453183U (en) | 2019-12-14 | 2019-12-14 | Plastic tensile creep testing device under corrosive environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922239800.XU CN211453183U (en) | 2019-12-14 | 2019-12-14 | Plastic tensile creep testing device under corrosive environment |
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| CN211453183U true CN211453183U (en) | 2020-09-08 |
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| CN201922239800.XU Active CN211453183U (en) | 2019-12-14 | 2019-12-14 | Plastic tensile creep testing device under corrosive environment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113237776A (en) * | 2021-05-31 | 2021-08-10 | 青岛中和聚氨酯材料有限公司 | Polyurethane high-temperature illumination deformation detection device and detection method thereof |
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2019
- 2019-12-14 CN CN201922239800.XU patent/CN211453183U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113237776A (en) * | 2021-05-31 | 2021-08-10 | 青岛中和聚氨酯材料有限公司 | Polyurethane high-temperature illumination deformation detection device and detection method thereof |
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