CN116203108A - Textile static attenuation test equipment and test method thereof - Google Patents
Textile static attenuation test equipment and test method thereof Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/60—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrostatic variables, e.g. electrographic flaw testing
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Abstract
The invention discloses a textile static attenuation test device and a test method thereof, wherein the test device comprises the following steps: the device comprises a plurality of wire drawing shafts and an electrostatic detection mechanism, wherein the wire drawing shafts are provided with an inner layer fiber wire drawing mechanism and a surface layer fiber wire drawing mechanism, and the inner layer fiber wire drawing mechanism and the surface layer fiber wire drawing mechanism can axially move on the wire drawing shafts; the plurality of traction shafts are distributed in parallel, and the rotation directions of the adjacent traction shafts are opposite, so that the corresponding adjacent fibers are interweaved and shaped to form a textile simulation piece; the static detection mechanism comprises a static application module and a measurement module, wherein the static application module applies voltage to the simulation piece through friction or charging, and then detects the voltage of the sample of the simulation piece; according to the invention, through a mode of carrying out recombination simulation after opening and carding the textiles of the corresponding types, the static attenuation detection of the finely divided textiles of different interweaving structures, different interweaving densities, front and back sides and the like of the textiles of the same type is realized, so that the optimal static solution of the textiles of the same type is obtained.
Description
Technical Field
The invention relates to the field of textile detection or static detection, in particular to a textile static attenuation test device and a test method thereof.
Background
The fiber material can generate friction with human body and various objects to generate static electricity in the processing and wearing processes. If the conductivity of the fiber or object is not good, the electric charge is not easy to escape, the production and processing are often affected, the quality of the fabric is reduced, the clothing is easy to stain when static electricity is generated, and in the using process of the clothing, the clothing is entangled with each other after being charged with the static electricity, so that the skirt leg-holding phenomenon is generated, and the discomfort of limbs is caused.
The factors influencing the static electricity of the textile are many, but mainly depend on the hygroscopicity of the textile, the relative humidity of air, the friction condition and the like, and the better the hydrophilicity of the fiber is, the more the moisture is absorbed, the lower the charge quantity is, and the better the antistatic effect is; natural fibers such as cotton, wool, silk, hemp and the like have higher hygroscopicity, lower resistance and less serious electrostatic phenomenon, and synthetic fibers are easy to generate static due to lower hygroscopicity, higher crystallinity and the like; the lower the relative humidity of air, the lower the moisture absorption rate of the fiber, and even if the fiber is hydrophilic, static electricity is easily generated due to low moisture regain; the rougher the surface of the fiber, the larger the friction coefficient, the more contact points, and the easier static electricity is generated; the faster the relative friction speed of the surfaces of the two objects is, the larger the probability of point contact is, the larger the charge density is, and the higher the potential difference is; the temperature also has influence on the electrostatic capacity of the fiber material, the temperature is increased, the resistance is reduced, and the electrostatic capacity is reduced; but the effect of temperature on static electricity is much smaller than the effect of relative humidity.
The long-time electrostatic interference can raise the blood sugar concentration of a human body, and the calcium and vitamin C contents in blood are reduced, so that adverse reactions such as scorching, headache, chest distress, cough and the like occur to people, and even bronchial asthma and arrhythmia can be caused, so that the antistatic finishing of textiles is very important.
The static decay time measurement is to charge the measured material to a stable value by a certain method, then to ground the measured material, to measure the decay signal of the surface potential of the measured material with time by using a non-contact static potentiometer, and to calculate the time elapsed when the surface potential of the measured material decays to a certain potential according to the decay signal.
However, the static attenuation test is mainly performed by adopting a textile block sample, however, the static performance of the textile is affected by the humidity and the temperature, the weaving structure density of the textile and the thickness, the front and back characteristics of the textile fiber, and the like, so that the performance of the textile is required to be comprehensively evaluated, a very large number of block samples are required to be independently tested for multiple times, the comprehensive static performance under various conditions can be obtained, the more the number of tests is, the more comprehensive the data is, but the time is consumed, and no static performance test equipment capable of conveniently and rapidly performing all tests is available.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides the textile static attenuation test equipment.
In order to achieve the above purpose, the invention adopts the following technical scheme: a textile static decay test device comprising: a plurality of bobbins and static detection mechanism, its characterized in that: the inner layer fiber wire pulling mechanism and the surface layer fiber wire pulling mechanism are arranged on the wire pulling shaft and can axially move on the wire pulling shaft; the plurality of traction shafts are distributed in parallel, and the rotation directions of the adjacent traction shafts are opposite, so that the corresponding adjacent fibers are interweaved and shaped to form a textile simulation piece; the static detection mechanism comprises a static application module and a measurement module, wherein the static application module applies voltage to the simulation piece through friction or charging, and the measurement module detects the sample voltage of the simulation piece; the device also comprises a wire hanging mechanism for winding and hanging the inner layer fiber on the inner layer fiber wire drawing mechanism and winding and hanging the surface layer fiber on the surface layer fiber wire drawing mechanism.
In a preferred embodiment of the present invention, the static electricity applying module uses a friction standard cloth to rub the analog component, and the measuring module performs a potential test on a surface of one side of the analog component.
In a preferred embodiment of the present invention, the static electricity applying module charges the analog part by corona spraying or charging, and the measuring module tests a decay law of a surface potential with time to determine a half-value time of charge decay.
In a preferred embodiment of the present invention, the thread hanging mechanism adopts an air flow towards the free end of the thread pulling shaft to blow the fibers to the thread pulling mechanism sequentially and uniformly, and the air flow direction is parallel to the axial direction of the thread pulling shaft.
In a preferred embodiment of the present invention, the inner layer fiber and the surface layer fiber are obtained by opening and carding corresponding textiles.
In a preferred embodiment of the present invention, the inner fiber wire pulling mechanism is composed of a plurality of inner fiber wire hanging rods, and the plurality of inner fiber wire hanging rods are circumferentially arranged outside the wire pulling shaft; the surface fiber wire pulling mechanism is formed by a plurality of surface fiber wire hanging rods, and the plurality of surface fiber wire hanging rods are arranged on the outer side of the wire pulling shaft in a surrounding mode.
In a preferred embodiment of the present invention, the lengths of the inner fiber hanging wire rod and the outer fiber hanging wire rod are regularly changed in the axial direction, and the longer the inner fiber hanging wire rod is, the shorter the outer fiber hanging wire rod is.
In a preferred embodiment of the present invention, the surface fiber hanging wire rods and the inner fiber hanging wire rods are axially staggered outside the wire shaft, and the inner fiber hanging wire rods can pass through the surface fiber hanging wire rods from one side near the free end of the wire shaft to one side of the surface fiber hanging wire rods far away from the free end of the wire shaft.
The invention also provides a testing method of the textile static attenuation testing equipment, which is characterized by comprising the following steps of:
A. opening and carding the textile into inner layer fibers and surface layer fibers, respectively winding and hanging the inner layer fibers and the surface layer fibers on corresponding wire pulling mechanisms, and performing discharge treatment;
B. the adjacent wire dragging shafts perform cross rotation with parallel axes, so that the fibers are cross-wound and subjected to discharge treatment;
C. and after voltage is applied, friction or charging is carried out, and the voltage is measured to obtain the electrostatic attenuation performance.
In a preferred embodiment of the invention, the interweaving density degree of the textile simulation piece is adjusted through the radial rotating speed of the adjacent wire dragging shafts or the crossing depth of the wire hanging rods;
the front and back surfaces of the textile simulation piece and the interweaving structure in the thickness direction are adjusted through the axial penetrating and relative movement of the inner layer fiber wire hanging rod and the surface layer fiber wire hanging rod on the same wire drawing shaft.
The invention solves the defects existing in the background technology, and has the following beneficial effects:
(1) According to the invention, through a mode of opening and carding corresponding types of textiles and then carrying out recombination simulation, static attenuation detection on different interweaving structures, different interweaving densities, front and back subdivision textiles and the like of the same type of textiles is realized, so that an optimal static solution of the type of textiles is obtained, the textiles with single structures do not need to be detected one by one, a linear static attenuation change curve can be provided, and compared with point type broken line lines obtained by detecting one by one of the single structures, the static attenuation detection method is rich in comparison examples and finer in conclusion data.
(2) The invention adopts a plurality of parallel traction shafts, the fibers are crossed and wound through the crossed rotation of the traction shafts, the interweaving structure and interweaving mode on the textile breadth are adjusted through the differentiated arrangement of the rotating speeds of the traction shafts or the adjustment of the crossed contact area, thereby simulating the textile variation of the breadth differentiation in the same large textile class and obtaining the linear electrostatic attenuation variation curve of the breadth differentiation textile.
(3) According to the invention, the blocks are arranged in the axial direction of the traction shaft, so that the composite textiles with different inner and outer layers of materials can be simulated and recombined, and the fiber materials with different inner and outer layers of materials are respectively arranged in the corresponding block traction mechanisms, so that the recombination can be synchronously carried out in the thickness direction in the process of ensuring the breadth knitting along with the cross running fit between the adjacent traction shafts, and the three-dimensional textile simulation effect is provided.
In addition, the specific structures of the two types of wire pulling mechanisms can be axially staggered outside the wire pulling shaft, so that the direction conversion is carried out in the thickness direction, the textile with the differentiated front and back characteristics is enabled to be free of manual turnover repeated detection, the front and back exchange detection can be achieved through displacement on the wire pulling shaft, and the fact that the textile is not necessarily turned over directly due to the fact that the staggered and movable arrangement between the wire pulling mechanisms is adopted, and the textile can be adjusted in thickness through the distance between the wire pulling mechanisms.
(4) According to the invention, the pneumatic wire hanging mechanism is adopted, the corresponding wire hanging mechanism is arranged as the wire hanging rod which is looped outside the wire hanging shaft, after the textile sample is opened and split, the textile sample is directly sent into the range of the wire hanging rod, so that the fiber is easy to agglomerate or clamp, the fiber cannot be sent into the root position of the wire hanging rod from the side, the fiber can only be gathered near the free end of the wire hanging rod, and the pneumatic wire hanging mechanism sends the fiber onto the wire hanging rod from the end face, so that the uniform distribution of the fiber in the wire hanging mechanism can be ensured.
(5) According to the invention, the textile simulation piece is knotted between the adjacent traction shafts, the thickness direction is not fixed, but is fixed through the traction of residual fibers between the edge of the breadth and the traction shafts, so that the static electricity applying module and the measuring module can accurately detect in the thickness direction, additional fixation is not needed, various modes of adaptation are convenient, including friction potential test, spraying potential attenuation test and the like, the suitability is good, and the suspended arrangement of the breadth at two sides is convenient for the diversified arrangement of the static electricity detecting mechanism; the fiber reorganization mode can provide samples with smaller sizes, and the utilization rate of textile samples is higher.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art;
fig. 1 is a method flow diagram of a preferred embodiment of the present invention.
Detailed Description
Reference to "an embodiment," "one embodiment," or "other embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least some, but not necessarily all embodiments, as may be apparent to those skilled in the art from consideration of the embodiments disclosed herein, and all other embodiments are intended to be within the scope of protection of the present invention.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention.
A textile static decay test device comprising: a plurality of traction shafts and static detection mechanism are provided with inlayer fibre traction mechanism and top layer fibre traction mechanism on the traction shaft, and two kinds of traction mechanisms are applicable to double-deck compound textile fabric, like one-way wet fabric, through the outer hydrophilic of inlayer fabric and the hydrophobicity difference, the inlayer is most hydrophobic promptly, inlayer structure is responsible for promptly conducting moisture or sweat to the surface fabric skin by the body surface, and outer structure needs volatilize as soon as possible with leading-out moisture or sweat, ensures simultaneously that leading-out moisture or sweat can not reenter the surface fabric inlayer, realizes one-way wet effect.
In specific application, the skin contact layer of the unidirectional moisture-conducting fabric is preferably polypropylene, the air contact layer is preferably polyester, and the fabric sample treatment process comprises: cutting, opening and carding the sample, and cleaning to obtain polypropylene fiber and polyester fiber respectively.
The inner layer fiber wire drawing mechanism and the surface layer fiber wire drawing mechanism can axially move on the wire drawing shaft, and can be subjected to empty load cross movement and transposition after corresponding fibers are loaded, and the fact that the two fibers are easy to intertwine during load transposition is needed to be explained, so that the thickness adjustment is preferably only performed during loading, namely the distance between the two mechanisms is shortened or kept away, and the complete passing transposition is not performed.
At least two guy shafts are distributed in parallel, and the rotation directions of the adjacent guy shafts are opposite, so that the adjacent guy shafts are used for interweaving and shaping corresponding adjacent fibers to form a textile simulation piece, and the fact that the interweaving process can interweave the adjacent fibers of the same type through the small height difference and/or the difference in rotating speed of the adjacent guy shafts is needed to be described.
The invention adopts a plurality of parallel traction shafts, the fibers are crossed and wound through the crossed rotation of the traction shafts, the interweaving structure and interweaving mode on the textile breadth are adjusted through the differentiated arrangement of the rotating speeds of the traction shafts or the adjustment of the crossed contact area, thereby simulating the textile variation of the breadth differentiation in the same large textile class and obtaining the linear electrostatic attenuation variation curve of the breadth differentiation textile.
It should be noted that, the fiber reorganization mode of the present invention can provide a smaller-sized sample, and the utilization rate of the textile sample is higher, so that the importance is placed on the interweaving of the same fibers and the control of the thickness direction of the composite material, and the specific aesthetic degree of the breadth is not considered.
Preferably, the electrostatic detection mechanism includes an electrostatic applying module and a measuring module, the electrostatic applying module applies a voltage to the analog component through friction or charging, and the measuring module detects the voltage of the sample of the analog component, and it should be noted that the guy wire body can be made of an insulating material, and only performs a tensioning fixing function, or directly uses the guy wire as a metal electrode of the measuring module.
In one embodiment, the tested material is fixed, the electric spraying device moves, and can measure smaller samples, the tested samples are electrified through corona electric spraying and charging, the decay rule of the surface potential of the tested samples along with time is tested, and the half-value time of charge decay is determined;
the method is simple and convenient to operate, has good data reproducibility, can realize nondestructive test on the tested fabric, can artificially control test voltage and polarity, and also needs to be interpreted that the charge decay of the fabric does not accord with an exponential rule, so that the half-life value is closely related to the test voltage.
In another embodiment, the textile simulation piece is kept to be under certain tension, friction is caused between the textile simulation piece and a standard friction cloth, the static performance of the textile simulation piece is evaluated by a potential stable value achieved by the surface of the simulation piece, the lower the charged potential is, the better the static resistance of the fabric is, and the friction charged potential value is generally smaller than 0.5kV as a technical index of the static-resistant fabric.
Preferably, the measuring module adopts contact type measuring equipment to enable the measured object to be in direct contact with the electrostatic voltmeter, and the equipotential principle is utilized for testing; conventional contact electrostatic voltmeters (or electrostatic voltmeters) are usually tested by using electrostatic torque, and Q-V series electrostatic voltmeters are most commonly used.
The yarn hanging mechanism is used for winding and hanging the polypropylene fibers on the inner layer fiber yarn pulling mechanism, winding and hanging the polyester fibers on the surface layer fiber yarn pulling mechanism, and preferably, an air injection mechanism positioned at one side of the free end of the yarn pulling shaft is adopted to blow the fibers to the yarn pulling mechanism sequentially and uniformly, and the air flow direction is parallel to the axial direction of the yarn pulling shaft.
In a preferred embodiment, the method can also simulate humidity change by mixing the unidirectional moisture-conducting fabric with air flow by applying water mist before static detection and the like, so as to be used for detecting static attenuation change in the process of sweating in practical application.
According to the invention, the pneumatic wire hanging mechanism is adopted, the corresponding wire hanging mechanism is arranged as the wire hanging rod which is looped outside the wire hanging shaft, after the textile sample is opened and split, the textile sample is directly sent into the range of the wire hanging rod, so that the fiber is easy to agglomerate or clamp, the fiber cannot be sent into the root position of the wire hanging rod from the side, the fiber can only be gathered near the free end of the wire hanging rod, and the pneumatic wire hanging mechanism sends the fiber onto the wire hanging rod from the end face, so that the uniform distribution of the fiber in the wire hanging mechanism can be ensured.
Further, for the heat and humidity transmissibility of the unidirectional moisture-conducting fabric, the hydrophobic and oleophobic double-sided structure is generally formed by uniformly distributing the oil-repellent and water-repellent finishing agent on one side of the fabric and controlling the penetration depth of the finishing agent on the fabric, so that one side of the fabric is hydrophilic and the other side is hydrophobic; according to the invention, the front side and the back side are suspended at the same time, and the front side and the back side can be flexibly switched, so that the fibers can be respectively and correspondingly treated in a water mist mode, the fibers are prevented from being treated before the textile fabric is opened, and the hydrophilic and hydrophobic properties of the fibers are prevented from being influenced after the opening and carding.
The fiber product can also be antistatic treated in other ways. For example, a film is formed on the surface of the fiber by utilizing the surface antistatic agent, the antistatic agent is suitable for various fiber materials, and is adhered or crosslinked on the fiber or fabric through padding, dipping, baking and the like, so that the friction coefficient among the fibers is reduced, the hygroscopicity of the fiber is improved, or the surface of the fiber is ionized, thereby inhibiting or reducing the generation of static charges and achieving the antistatic aim; or plating the surface of the fabric with a metal such as copper, nickel, silver, or the like, or a composite plating such as copper-nickel, or the like, all of which may be applied to the fibers during opening or threading.
In one embodiment, when the textile is opened and carded for cleaning, and chemical short fibers or medium and long fibers are processed, the chemical fiber raw materials are fluffy, contain no impurities and only contain a small number of fiber defects, so that the process principle of multi-carding, less beating and less elimination of multi-recovery is adopted; raw materials with too tight package, water content or too much impurity content are generally subjected to pretreatment; the raw materials for tight packing should be pre-opened or unpacked in advance to be naturally opened for a sufficient time; the raw materials with excessive water should be dried before opening to improve the opening effect of the raw materials.
Specifically, the parts with the pins and the needle teeth on the two surfaces move relatively to tear and loosen the fiber blocks in the raw materials, the fiber blocks move upwards along with the pin curtain and meet with the cylindrical cotton-homogenizing roller with the pins, as the distance between the pin curtain and the cotton-homogenizing roller is very small, the fiber blocks are grabbed by the pins and torn to obtain loosening, at the moment, a part of the torn and loose fiber raw materials are output out of the machine along with the pin curtain, the other part of the torn and loose fiber raw materials are knocked down by the cotton-homogenizing roller, and then are brought back to the space between the two parts by the pin curtain for repeated pulling and loosening, certain displacement occurs between the fibers in the pulling and loosening process, the density of the fiber blocks is reduced, the connection between the fibers and impurities is weakened, and some small impurities are separated.
In one embodiment, the inner fiber wire pulling mechanism consists of a plurality of inner fiber wire hanging rods, and the inner fiber wire hanging rods are arranged around the outer side of the wire pulling shaft; the surface fiber wire pulling mechanism comprises a plurality of surface fiber wire hanging rods, and the plurality of surface fiber wire hanging rods are arranged around the outer side of the wire pulling shaft; the length of the inner layer fiber wire hanging rod and the length of the surface layer fiber wire hanging rod are regularly changed in the axial direction, the closer to the free end of the wire pulling shaft, the longer the inner layer fiber wire hanging rod is, the shorter the surface layer fiber wire hanging rod is, and the layering is arranged between the two layers of fibers, so that all mixing is avoided.
In the rotation process, the surface layer fiber wire hanging rods and the inner layer fiber wire hanging rods are axially staggered outside the wire drawing shaft, and the inner layer fiber wire hanging rods can penetrate through the surface layer fiber wire hanging rods from one side close to the free end of the wire drawing shaft and move to one side, far away from the free end of the wire drawing shaft, of the surface layer fiber wire hanging rods.
A method of testing a textile static decay test apparatus as shown in fig. 1, comprising the steps of:
A. opening and carding the textile into inner layer fibers and surface layer fibers, respectively winding and hanging the inner layer fibers and the surface layer fibers on corresponding wire pulling mechanisms, and performing discharge treatment;
B. the adjacent wire dragging shafts perform cross rotation with parallel axes, so that the fibers are cross-wound and subjected to discharge treatment;
C. and after voltage is applied, friction or charging is carried out, and the voltage is measured to obtain the electrostatic attenuation performance.
The static electricity eliminating rod is installed at one side of the center of the simulation piece, the distance between the static electricity eliminating rod and the simulation piece is less than 10cm, static electricity of the fabric can be eliminated, and the static electricity eliminating rod can be installed on two sides.
In the limiting and cross winding process, the interweaving density degree of the textile simulation piece is adjusted through the radial rotating speed of the adjacent wire dragging shafts or the cross depth of the wire hanging rods; the front and back surfaces of the textile simulation piece and the interweaving structure in the thickness direction are adjusted through the axial penetrating and relative movement of the inner layer fiber wire hanging rod and the surface layer fiber wire hanging rod on the same wire drawing shaft.
In summary, the invention realizes the static attenuation detection of the finely divided textiles of different interweaving structures, different interweaving densities, front and back surfaces and the like of the textiles of the same kind by opening and carding the textiles of the corresponding kind and then performing recombination simulation, thereby obtaining the optimal static solution of the textiles of the same kind, without detecting the textiles of a single structure one by one, and providing a linear static attenuation change curve.
According to the invention, the blocks are arranged in the axial direction of the traction shaft, so that the composite textiles with different inner and outer layers of materials can be simulated and recombined, and the fiber materials with different inner and outer layers of materials are respectively arranged in the corresponding block traction mechanisms, so that the recombination can be synchronously carried out in the thickness direction in the process of ensuring the breadth knitting along with the cross running fit between the adjacent traction shafts, and the three-dimensional textile simulation effect is provided.
In addition, the specific structures of the two types of wire pulling mechanisms can be axially staggered outside the wire pulling shaft, so that the direction conversion is carried out in the thickness direction, the textile with the differentiated front and back characteristics is enabled to be free of manual turnover repeated detection, the front and back exchange detection can be achieved through displacement on the wire pulling shaft, and the fact that the textile is not necessarily turned over directly due to the fact that the staggered and movable arrangement between the wire pulling mechanisms is adopted, and the textile can be adjusted in thickness through the distance between the wire pulling mechanisms.
According to the invention, the textile simulation piece is knotted between the adjacent traction shafts, the thickness direction of the textile simulation piece is not fixed, but is fixed through the traction of residual fibers between the edge of the breadth and the traction shafts, so that the static electricity applying module and the measuring module can accurately detect in the thickness direction, additional fixation is not needed, various modes of adaptation are convenient, including friction potential test, spraying potential attenuation test and the like, the suitability is good, and the suspended arrangement of the breadth at two sides is convenient for the diversified arrangement of the static electricity detecting mechanism.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The above-described preferred embodiments according to the present invention are intended to suggest that, from the above description, various changes and modifications can be made by the person skilled in the art without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (10)
1. A textile static decay test device comprising: a plurality of bobbins and static detection mechanism, its characterized in that:
the inner layer fiber wire pulling mechanism and the surface layer fiber wire pulling mechanism are arranged on the wire pulling shaft and can axially move on the wire pulling shaft;
the plurality of traction shafts are distributed in parallel, and the rotation directions of the adjacent traction shafts are opposite, so that the corresponding adjacent fibers are interweaved and shaped to form a textile simulation piece;
the static detection mechanism comprises a static application module and a measurement module, wherein the static application module applies voltage to the simulation piece through friction or charging, and the measurement module detects the sample voltage of the simulation piece;
the device also comprises a wire hanging mechanism for winding and hanging the inner layer fiber on the inner layer fiber wire drawing mechanism and winding and hanging the surface layer fiber on the surface layer fiber wire drawing mechanism.
2. A textile static decay test apparatus according to claim 1, wherein: the static electricity applying module adopts friction standard cloth to carry out friction on the simulation piece, and the measuring module carries out potential test on one side surface of the simulation piece.
3. A textile static decay test apparatus according to claim 1, wherein: the static electricity applying module charges the simulation piece through corona spraying or charging, and the measuring module tests the decay law of the surface potential of the simulation piece along with time to determine the half-value time of charge decay.
4. A textile static decay test apparatus according to claim 1, wherein: the yarn hanging mechanism adopts air flow towards the free end of the yarn pulling shaft to blow the fibers to the yarn pulling mechanism sequentially and uniformly, and the air flow direction is parallel to the axial direction of the yarn pulling shaft.
5. A textile static decay test apparatus according to claim 4, wherein: the inner layer fiber and the surface layer fiber are all obtained by opening and carding corresponding textiles.
6. A textile static decay test apparatus according to claim 1, wherein: the inner layer fiber wire pulling mechanism consists of a plurality of inner layer fiber wire hanging rods, and the inner layer fiber wire hanging rods are circumferentially arranged outside the wire pulling shaft; the surface fiber wire pulling mechanism is formed by a plurality of surface fiber wire hanging rods, and the plurality of surface fiber wire hanging rods are arranged on the outer side of the wire pulling shaft in a surrounding mode.
7. A textile static decay test apparatus according to claim 6, wherein: the lengths of the inner layer fiber wire hanging rod and the surface layer fiber wire hanging rod are changed regularly in the axial direction, the closer to the free end of the wire pulling shaft, the longer the inner layer fiber wire hanging rod is, and the shorter the surface layer fiber wire hanging rod is.
8. A textile static decay test apparatus according to claim 1, wherein: the surface layer fiber wire hanging rod and the inner layer fiber wire hanging rod are axially staggered outside the wire drawing shaft, and the inner layer fiber wire hanging rod can penetrate through the surface layer fiber wire hanging rod from one side close to the free end of the wire drawing shaft and move to one side, far away from the free end of the wire drawing shaft, of the surface layer fiber wire hanging rod.
9. A method of testing a textile static decay test device according to any of the claims 1-8, comprising the steps of:
A. opening and carding the textile into inner layer fibers and surface layer fibers, respectively winding and hanging the inner layer fibers and the surface layer fibers on corresponding wire pulling mechanisms, and performing discharge treatment;
B. the adjacent wire dragging shafts perform cross rotation with parallel axes, so that the fibers are cross-wound and subjected to discharge treatment;
C. and after voltage is applied, friction or charging is carried out, and the voltage is measured to obtain the electrostatic attenuation performance.
10. A method of testing a textile static decay test device according to claim 9, wherein:
the interweaving density degree of the textile simulation piece is adjusted through the radial rotating speed of the adjacent wire dragging shafts or the crossing depth of the wire hanging rods;
the front and back surfaces of the textile simulation piece and the interweaving structure in the thickness direction are adjusted through the axial penetrating and relative movement of the inner layer fiber wire hanging rod and the surface layer fiber wire hanging rod on the same wire drawing shaft.
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| CN115015363A (en) * | 2022-06-16 | 2022-09-06 | 中国人民解放军陆军工程大学 | Static decay time testing method adopting three different charging modes |
| CN217739243U (en) * | 2022-05-06 | 2022-11-04 | 广东优科检测认证有限公司 | Textile clamping mechanism for friction static tester |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3548460A (en) * | 1964-02-15 | 1970-12-22 | Pavena Ag | Process for drafting staple fibers |
| CN105403504A (en) * | 2015-12-24 | 2016-03-16 | 浙江理工大学 | High performance fiber and fabric friction coefficient testing system and control method thereof |
| CN209606373U (en) * | 2018-12-29 | 2019-11-08 | 胜利新大实业集团有限公司 | Static of the fabric detection friction auxiliary device |
| CN210824805U (en) * | 2019-08-28 | 2020-06-23 | 无锡益明玻璃纤维有限公司 | Glass fiber traction frame |
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