CN202631375U - Device for testing plastic stress whitening property - Google Patents
Device for testing plastic stress whitening property Download PDFInfo
- Publication number
- CN202631375U CN202631375U CN 201220095671 CN201220095671U CN202631375U CN 202631375 U CN202631375 U CN 202631375U CN 201220095671 CN201220095671 CN 201220095671 CN 201220095671 U CN201220095671 U CN 201220095671U CN 202631375 U CN202631375 U CN 202631375U
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- drift
- stress whitening
- plastic plate
- plastic
- fixed station
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a device for testing plastic stress whitening property. The device comprises a rack, a base plate, a plastic plate fixing device, a punch, a punch locating hole, a punch sleeve, a spring switch and a scale plate. The device can be used for fixing a drop position, freely regulating and controlling the punch height and quantizing the whitening degree. The device is capable of rapidly, accurately and stably measuring the stress whitening property of a plastic product, and has the advantages of low cost, simpleness and rapidness in operation, stability and accuracy in control, and the like. A method for testing the whitening property of the plastic product by using the device can be used for quantizing the whitening property, and is beneficial to the research on the plastic stress whitening property.
Description
Technical field
The present invention relates to a kind of device of testing plastics stress whitening performance.
Background technology
Plastics produce micro-crack, micropore or crazingization under external force, thereby cause that refractive power changes, and finally causes stress whitening.Stress whitening can influence outward appearance, can cause simultaneously that the product breaking elongation is low, intensity is low and stress crack resistance performance is poor, has had a strong impact on the use of product.At present, the mensuration of plastic products stress whitening performance and improvement have become one of focus of Chinese scholars extensive discussions.In applications such as household electrical appliance, toy, automobile, plastic items and electric tools, just press for the turn white plastics of excellent performance of proof stress.
At present, the method for testing of anti-stress whitening performance is also fewer, mainly judges through falling sphere experiment and cupping experiment.The falling sphere experiment is pounded on certain thickness plastic plate its degree of turning white through visualization with ball freely falling body under certain altitude of certain mass.There is following shortcoming in this method: 1. can not accurate hit precalculated position, and lifting surface area is bigger, and diverse location is because of the stressed effect difference that causes turning white not of uniform size, thereby is not easy to observe the effect of turning white accurately; 2. because the effect of turning white is different and different with the position, the degree of therefore turning white can not be quantized into numeral and judge quality.The cupping experimental machine is adopted in the cupping experiment, and with plastic plate jack-up certain height, ejection height is shown that by digital display when treating digital display to desired value, manually control finishes, and need the operator to be quick on the draw, and equipment cost is expensive.
The utility model provides fixing position, whereabouts, freely regulate and control that cone height and weight, the degree of turning white quantize, proving installation easy and simple to handle and with low cost; And can be fast, accurately, the stress whitening performance of stable measuring plastic products, for the detection of the anti-stress whitening of plastics develops and replenishes.
Summary of the invention
The objective of the invention is fixedly the position, whereabouts, freely regulate and control the drift height; And the plastic products stress whitening proving installation of the degree quantification of will turning white; This device can be fast, accurately, the stress whitening performance of stable measuring plastic products, and the turn white method of performance of these device to test plastic products of utilizing is provided.
A kind of device that is used to test plastics stress whitening performance is made up of stand, backing plate, plastic plate stationary installation, drift, drift pilot hole, drift sleeve, snap switch and scaleplate.
Described stand is used to keep the balance of whole instrument.
Described backing plate is the sheet material of rubber-like sponge and so on, and purpose is to prevent that stand and drift from sustaining damage under acting force, and the repeatedly spring of drift when falling, and stays turning white in various degree at plastic plate, influences the turn white mensuration of performance of plastics.
Described plastic plate stationary installation is made up of fixed station, gib screw, geometrical clamp and hold-down nut.Fixed station has two, is welded on the stand, and the middle backing plate of placing is used for the placement of plastic plate; Totally four of gib screws, on each fixed station each two, and be welded on the fixed station, be used for the positioning and fixing folder.Geometrical clamp passes gib screw, is pressed on the plastic plate, is used for plastic plate is fixed; Hold-down nut can screw in gib screw, geometrical clamp is pushed down, thereby fixed plastic plate.
Described drift is made up of conical punch, drift handle, drift chock hole and drift groove.Conical punch free-falling under certain altitude acts on the plastic plate, turns white after making plate stressed.The drift handle is used to carry drift, also for drift fixing weight and impulse force is provided simultaneously.Drift chock hole is used for snap switch and passes fixedly drift.The drift groove is used for the activity of snap switch locating piece 7-1.
Described drift pilot hole is used for fixing the height of drift.
Described drift sleeve is used for fixing drift, makes drift can act on the precalculated position of plastic plate.
Described snap switch is made up of locating piece, chock, spring and handle.Locating piece is used for fixing switch in drift sleeve the inside; Chock inserts the fixedly height of drift of drift pilot hole, and chock breaks away from the drift pilot hole can make the drift free-falling; Spring one end is connected on the locating piece, and an end is connected on the chock, and is penetrated by chock, and the contraction of spring can freely be controlled the fixing of drift and fall.Handle is used for the switching function of control spring switch.
Described scaleplate is used for accurately judging the height of drift, is used for fixing and supports whole device simultaneously.
Described plastics stress whitening performance test methods is following:
1. fixed plastics plate: plastic plate is placed on the backing plate, and plastic plate is clamped with the plastic plate stationary installation;
2. adjust the drift height:, select corresponding drift height according to the plastic plate of different materials., drift is positioned through the drift pilot hole with snap switch then the relevant position of mentioning scaleplate on the drift through the drift handle, so just accurately adjusted the drift height;
3. impact plastic plate: snap switch is opened, and the drift free-falling impacts to plastic plate forming stress whitening;
4. test aberration: plastic plate, is taken out stress whitening from impacting instrument, with the color difference meter test plastic plate place's aberration that turns white, and through its proof stress of Δ L value judgement performance of turning white.Under same height, the Δ L value that plastic plate is measured is more little, and its proof stress performance of turning white is good more.
The invention has the beneficial effects as follows:
1, proving installation of the present invention, fixedly the position, whereabouts, freely regulate and control the drift height, plastic plate occurs with the form of turning white a little after impacting, easily test.
3, proving installation of the present invention, have with low cost, operate simple and easy fast, advantage such as control stabilization is accurate.
4, method of testing of the present invention can quantize the performance of turning white, and helps the turn white research of performance of plastics.
Description of drawings
In conjunction with accompanying drawing the present invention is described further.
Fig. 1 plastics stress whitening performance testing device overall diagram; Each component diagram of Fig. 2 plastics stress whitening performance testing device
Fig. 3 plastics stress whitening performance testing device drift figure; Fig. 4 plastics stress whitening performance testing device snap switch figure
Embodiment
A kind of device that is used to test plastics stress whitening performance is made up of stand 1, backing plate 2, plastic plate stationary installation 3, drift 4, drift pilot hole 5, drift sleeve 6, snap switch 7 and scaleplate 8.
Wherein, stand 1 is used to keep the balance of whole instrument.
Backing plate 2 is the sheet material of rubber-like sponge and so on, and purpose is to prevent that stand 1 and drift 4 from sustaining damage under acting force, and the repeatedly spring of drift when falling, and stays turning white in various degree at plastic plate, influences the turn white mensuration of performance of plastics.
Plastic plate stationary installation 3 is made up of fixed station 3-1, gib screw 3-2, geometrical clamp 3-3 and hold-down nut 3-4.Fixed station 3-1 has two, is welded on the stand, and the middle backing plate 2 of placing is used for the placement of plastic plate; Totally four of gib screw 3-2, each fixed station 3-1 goes up each two, and is welded on the fixed station 3-1, is used for positioning and fixing folder 3-3.Geometrical clamp 3-3 passes gib screw 3-2, is pressed on the plastic plate, is used for plastic plate is fixed; Hold-down nut 3-4 can screw in gib screw 3-2, and 3-3 pushes down with geometrical clamp, thereby fixes plastic plate.
Drift pilot hole 5 is used for fixing the height of drift.
Drift sleeve 6 is used for fixing drift 4, makes drift 4 can act on the precalculated position of plastic plate.
Scaleplate 8 is used for accurately judging the height of drift 4, is used for fixing and supports whole device simultaneously.
Plastics stress whitening performance test methods is following:
1. fixed plastics plate: plastic plate is placed on the backing plate, and plastic plate is clamped with the plastic plate stationary installation;
2. adjust the drift height:, select corresponding drift height according to the plastic plate of different materials., drift is positioned through the drift pilot hole with snap switch then the relevant position of mentioning scaleplate on the drift through the drift handle, so just accurately adjusted the drift height;
3. impact plastic plate: snap switch is opened, and the drift free-falling impacts to plastic plate forming stress whitening;
4. test aberration: plastic plate, is taken out stress whitening from impacting instrument, with the color difference meter test plastic plate place's aberration that turns white, and through its proof stress of Δ L value judgement performance of turning white.Under same height, the Δ L value that plastic plate is measured is more little, and its proof stress performance of turning white is good more.
Claims (5)
1. device that is used to test plastics stress whitening performance is characterized in that device is made up of stand, backing plate, plastic plate stationary installation, drift, drift pilot hole, drift sleeve, snap switch and scaleplate.
2. a kind of device that is used to test plastics stress whitening performance according to claim 1 is characterized in that described backing plate is the sheet material of rubber-like sponge and so on.
3. a kind of device that is used to test plastics stress whitening performance according to claim 1 is characterized in that described plastic plate stationary installation is made up of fixed station, gib screw, geometrical clamp and hold-down nut; Fixed station has two, is welded on the stand, the middle backing plate of placing; Totally four of gib screws, on each fixed station each two, and be welded on the fixed station; Geometrical clamp passes gib screw, is pressed on the plastic plate fixing; Nut can screw in gib screw, geometrical clamp is pushed down, thereby fixed plastic plate.
4. a kind of device that is used to test plastics stress whitening performance according to claim 1 is characterized in that described drift is made up of conical punch, drift handle, drift chock hole and drift groove.
5. a kind of device that is used to test plastics stress whitening performance according to claim 1 is characterized in that described snap switch is made up of locating piece, chock, spring and handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220095671 CN202631375U (en) | 2012-03-09 | 2012-03-09 | Device for testing plastic stress whitening property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220095671 CN202631375U (en) | 2012-03-09 | 2012-03-09 | Device for testing plastic stress whitening property |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202631375U true CN202631375U (en) | 2012-12-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220095671 Expired - Fee Related CN202631375U (en) | 2012-03-09 | 2012-03-09 | Device for testing plastic stress whitening property |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202631375U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900917A (en) * | 2012-12-28 | 2014-07-02 | 比亚迪股份有限公司 | Device for simulating surface stress whitening of plastic products and method for detecting surface stress whitening |
| CN110987669A (en) * | 2019-10-17 | 2020-04-10 | 华之杰塑料建材有限公司 | Device and method for testing integral impact resistance of plastic profile structure |
-
2012
- 2012-03-09 CN CN 201220095671 patent/CN202631375U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900917A (en) * | 2012-12-28 | 2014-07-02 | 比亚迪股份有限公司 | Device for simulating surface stress whitening of plastic products and method for detecting surface stress whitening |
| CN110987669A (en) * | 2019-10-17 | 2020-04-10 | 华之杰塑料建材有限公司 | Device and method for testing integral impact resistance of plastic profile structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20150309 |
|
| EXPY | Termination of patent right or utility model |