CN103926162B - The resistance to scraped finish evaluation device of silver fiber - Google Patents

The resistance to scraped finish evaluation device of silver fiber Download PDF

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Publication number
CN103926162B
CN103926162B CN201410168875.2A CN201410168875A CN103926162B CN 103926162 B CN103926162 B CN 103926162B CN 201410168875 A CN201410168875 A CN 201410168875A CN 103926162 B CN103926162 B CN 103926162B
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China
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silver fiber
measured
resistance
silver
crochet hook
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CN201410168875.2A
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Chinese (zh)
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CN103926162A (en
Inventor
仇江海
李成波
宁霞
鲍军方
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青岛市纤维纺织品监督检验研究院
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Publication of CN103926162A publication Critical patent/CN103926162A/en
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Abstract

The invention discloses a kind of resistance to scraped finish evaluation device of silver fiber,Including test board,An analogue means for being used to simulate silver fiber silver fiber and crochet hook CONTACT WITH FRICTION when being knitted on knitting machine is provided with test board,Resistance measurement device and Rubbing number collection sensor are provided with analogue means,Also include a setting resistivity threshold value automatic stop system that analogue means stopping can be driven to act when resistance value reaches a certain setting value,The setting resistivity threshold value automatic stop system includes controller and the information storage module electrically connected respectively with the controller,Digital editing module,Signal output module,Signal input module,Liquid crystal display and Rubbing number display,The signal output module electrically connects with analogue means,Signal input module electrically connects with Rubbing number sensor and resistance measurement device,The digital editing module is connected with algebraic compiler.Test result is accurate, can obtain the resistivity of silver fiber during any setting friction valve.

Description

The resistance to scraped finish evaluation device of silver fiber

Technical field

The present invention relates to a kind of silver fiber detection means, more particularly to a kind of resistance to scraped finish evaluation device of silver fiber.

Background technology

With the horizontal continuous improvement of the modern life, requirement of the people to quality of life is also constantly improving, clothing, food, Firmly, row clothing is first, fiber has had silver that is varied, such as being applied on nylon fiber surface as the clothing that people wear usually The obtained silver fiber of layer, the anti-electromagnetic shielding fabric made using silver fiber is excellent because of its shielding property, extensive Be used for radiation-proof clothes for gravida, it is well known that the closure that the principle of electromagnetic shield-ing of exposure suit is formed mainly by silver plated fiber is returned Road, the size of conductance will directly affect the quality of capability of electromagnetic shielding, and the thickness of the silver coating on nylon fiber surface is to determine Determine the key of silver plated fiber resistivity size, silver fiber is hooked what needle-bar was knitted repeatedly by traditional knitting machine using crochet hook Process inevitably will cause scratch to the silver layer on silver plated fiber surface, and this inevitably will have influence on electromagnetic shielding fabric Shielding property, that is to say, that the resistance value of the radiation-proof fabric of finished product will be bigger than normal, and through varying number needle-bar and not collinear The radiation-proof fabric that the number of turns measures, because the abrasion number difference of silver fiber and crochet hook does not cause degree that its resistance value declines also not Together, final finished radiation-proof fabric will be less than the effectiveness of radiation-proof fabric in theory, and the initial stage of surface silver layer grinds Damage also leads to the speed that dress, washing of the people in the later stage accelerate the failure, so as to cause the service life of radiation-proof fabric Decline.So the stress and fatigue detecting of fiber are the important steps for holding quality of textile products, it is directly related to fiber quality Deciding grade and level and terminal applies, such as clothes, household textiles, automotive upholstery multiple use.Any fiber will be through too strong Continually changing stress repetition effect is spent, therefore, the fatigue proof test of fiber is particularly important.

It is generally believed that influence silver plated fiber fatigue performance factor mainly have it is following these:

1. the toughness of fiber in itself.Research finds that the toughness of fibrous matrix in itself is stronger, and the life-span of fiber is also longer, one As generally acknowledge nylon fiber toughness it is stronger.

2. the fastness that silver coating is combined with matrix.

3. the fatigue performance of silver coating in itself.

For silver fiber, the decline of its shielding properties is mainly shown as silver coating destruction in itself and silver coating and fiber The stripping of matrix.

Method of testing on coat adhesive force has many.Such as U.S. PASS method of testing standard ASTM D3359-1997

Provide a kind of knife edge method of testing.It is on test sample surface with sharp cutter (knife edge angle is 15 °~30 °) 10 × 10 1mm × 1mm small grids are drawn, each line should deep and paint bottom;With hairbrush by the fragment brush of test zone Totally;Tested small grid is firmly clung with 350~400g/cm2 of adhesion adhesive tape (3M600 gummed papers are equivalent), is used in combination Erasing rubber firmly wipes adhesive tape, to increase the contact area of adhesive tape and tested region and dynamics;Adhesive tape one end is held, is being hung down Nogata shuts down rapidly gummed paper to (90 °), and same position carries out 2 same tests, and its result judgement method is:It is required that adhesive force >= To be qualified during 4B.Wherein 5B is that scribing edge is smooth, at the edge of line and intersection without peeling paint;4B is to rule Intersection have the peeling paint of small pieces, and the gross area that comes off is less than 5%;3B is small to have at the edge of line and intersection The peeling paint of piece, and the gross area is come off between 5%~15%;2B is to have sheet of oil at the edge of line and intersection Paint comes off, and comes off the gross area between 15%~35%;1B is de- to there is sheet of paint at the edge of line and intersection Fall, and come off the gross area between 35%~65%;0B is to have sheet of peeling paint at the edge of line and intersection, and The gross area that comes off is more than 65%.The diameter of silver fiber only has 10~20 μm, it is clear that is not suitable for this method.

U.S.'s ASTM B571-97 standards give the adhesive force of metal cladding on 11 kinds of various base materials of qualitative evaluation Method, there are bend test method, polishing experiment, towing trial, chisel experiment, file test, saw experiment, quenching test, impact examination Test, disbonded test, push experiment, frame experiment.Wherein:

1st, bend test.It is that sample center is placed on an axle, outwardly, firmly bending tries cover layer face downwards on both sides Sample, until both sides are parallel.The diameter of axle should be 4 times of sample thickness.Check that crooked position is with low power magnifying glass (such as 4 times) No to have coating peeling, this is the performance of poor adhesive force.If coating ruptures or foaming, attempted to see energy with sharp blade It is no to separate coating from base material.For hard and brittle coating, crooked position would generally be cracked.These crackles It may may also may not extend to base material.No matter which kind of situation, the cracked poor adhesive force for being not offered as sample, unless with Sharp instrument can be by overburden stripping.Then with the angle of 180 degree, alternating bending sample, until metal fracture.In low power The tilting and peeling of this region overlay layer are observed under magnifying glass (such as 10 times).Seen to separate from base material with sharp blade and covered Cap rock, if it is possible to separate, then illustrate that the adhesive force of this coating is poor.

2nd, polishing experiment.It is the instrument on the cover layer in 5cm length with one end for smooth hemispherical (a diameter of 6mm) Polish about 15s.Dynamics during polishing should remain the sample that can polish every time, but be unlikely to make sample surfaces generation recessed Trace.See whether foaming, separation and peeling phenomenon occur.Generally, the result obtained when coating is thicker can less make us full Meaning.

3rd, chisel is tested.The coating for the sample surfaces to be tested is pierced through with sharp cold chisel.Chisel can It to be pierced into from coating rear portion, can also first be cut with saw, then be pierced into from the faying face of the coating and base material exposed.Can Chisel is replaced with knife.During with knife, it can be hammered into shape or other instruments rap, can also do not had to hammer.If in this way Can removes coating, then its adhesive force is poor.When coating is softer or thin, this method does not apply to.

4th, towing trial.On common punch press, from adjustable punch die, the sample stretching that diameter is about 60mm is turned into One a diameter of 38mm, deep the 18mm calotte with bead.Male die is persistently penetrated, until calotte is broken.Can be direct The adhesive force situation of coating is observed, can also further be commented by the technology separated from base material that the 5th part provides Valency.Peeling if there is coating separates with base material, then the adhesive force of coating is poor.What this method obtained Result of the test is not only related to the pliability of coating, also relates to the pliability of base material.

5th, file test.A piece of test specimen under saw, checks whether coating and base material separate.In saw kerf with coarse file Filed from base material direction to coating direction, angle and the cover surface of file are in 45 degree of angles.If coating peels off or from base material Separation, then it is unqualified to be considered as adhesive force.

6th, saw experiment.With Carborundum wheel from base material to coating direction fly-cutting sample.It can also be replaced with bow saw Carborundum wheel, but equally to be sawed from base material to coating direction.Peel off or separate if there is coating, so that it may be considered as adhesive force It is unqualified.

7th, quenching test.Heating sample for a period of time, reaches certain temperature in stove.Furnace temperature is kept in selected temperature In the range of ± 10 DEG C of degree.If coating or base material are oxidizable, should be heated in inert gas or appropriate liquid. Then at room temperature by sample be put into water or other appropriate liquid in quenched.If there is peeling off or separating, then try The adhesive force of sample is unqualified.It in coating micropore and can be wrapped up in micro- hole of base material and deposit some electroplating solutions, these electroplating solution meetings Heating and bubble is formed in quenching process.If bubble around coating will not separate from base material, these steep presence not by It is considered as the bad evidence of adhesive force.

8th, impact test.Sample is placed on an appropriate supporter, made with hammer or other Apparatus for Impacting at low-temp hammering sample It is deformed.A diameter of 5mm of impact head or special provision, added with load during impact.Gravure or periphery coating are if there is de- Fall or bubble, then the adhesive force of sample is unqualified.

9th, disbonded test.By a wide 20mm, thickness about 1.5mm steel bar or brass rod are welded or glued with appropriate adhesive Knot is at a certain smooth position in sample to be tested surface.Also applicable one-faced tapes replace.Adhesive can be heated.Peel off When degree angle, speed, the thickness and width of institute's metal bar (adhesive tape) etc. it is fixed.If the interface of coating and base material goes out incumbent What is abnormal, it is believed that adhesive force is unqualified.

10th, experiment is pushed.From base material to coating direction, an a diameter of 0.75cm obstructed hole is bored, until drill bit Stop after the drill-through general 1.5mm of coating and substrate interface.Sample is placed on a diameter of 2.5mm annulus, with one A diameter of 0.6cm card punch, it is pressed downward with one end that stable pressure is obstructed in hole, the east until being biased out a button-like West.If the coating around coating or hole on the thing of button-like occurs coming off or separated, the attached of sample can be considered Put forth effort unqualified.

11st, frame is tested.The parallel lines of 3 or more are marked in specimen surface or draw a gridiron pattern with steel knife. The knife of frame should be sharp, and point of a knife is 30 degree, and the distance between drawn parallel lines are about 10 times of overburden cover, Minimum is not less than 0.4mm.In setting-out, it is ensured that every line is all drawn to base material.If a certain piece on gridiron pattern is from base material Come off, then it is assumed that the adhesive force of the sample is unqualified.If it is qualified that sample adhesive force in above-mentioned steps is shown as, finger is used Pressure sensitive adhesive tape (adhesion strength of adhesive tape is at least 45g/mm) is pressed against on clean gridiron pattern.Before rubberized fabric, it should be ensured that Particle and chip are removed clean caused by all strokes of lattice on gridiron pattern.After adhesive plaster posts, the free end of adhesive tape is caught, quickly (not being to wrench) pulls open adhesive tape.It is in 180 degree angle that free end, which should try one's best with specimen surface, when pulling open.If it is stained with adhesive tape from chessboard The coating to be come off in lattice, then the adhesive force of coating is unqualified.The coating being connected with gridiron pattern is not considered.

The standard explicitly points out that " explanation to the qualitative detection test method of metal cladding adhesive force is often disputable 's." and it is further noted that the experiment such as chisel experiment, file test, saw experiment, pushing experiment and frame is not suitable for coating Softer or thin sample, while be also believed that the final service condition and mode of coating piece determine can best its work(of representative The test method of requirement can be gone up.For example, for the coating piece then to assemble, crooked test or towing trial are suitable;It is right Quenching test is then appropriate in weld or be exposed to the sample under high temperature.If a part need after spray coating baking or Heat treatment, then need to carry out the test of adhesive force." there was only 10~20 μm due to the diameter of silver fiber, and it is very soft, silver coating is only There are several microns, what silver fiber was subject in its weaving process is the effect such as pulling repeatedly, bending, mantle friction, these works Comprehensive function result causes the destruction or stripping of silver coating, shows as the rise of resistance value, so as to cause electromagnetic shielding to be imitated The decline of energy.Therefore the fatigue performance of evaluation silver fiber is not suitable for any one of these methods.

Above-mentioned method and apparatus is merely capable of measuring the number of fibrous fracture failure, but can not simulate fiber and exist With the realistic tribological mode of crochet hook during woven, and can not be measured by way of fracture for silver plated fiber Resistance change of the silver layer when being scraped with crochet hook each time, and the silver-plated amount that the problem controls silver layer in advance can not be directed to, come Obtain the electromagnetic shielding Expected Results of final finished fabric.

The content of the invention

It can be tested out in view of the deficienciess of the prior art, the technical problem to be solved by the invention is to provide one kind Silver fiber is in weaving process, and silver fiber contacts the influence caused by friction, prediction silver with crochet hook especially during knitting machine The adaptability of fiber weaving and silver fiber quality evaluation, and then modified technique etc. is instructed, improve the radiation proof of electromagnetic shielding fabric The resistance to scraped finish evaluation device of the silver fiber of performance and service life.

In order to solve the above technical problems, the technical solution used in the present invention is:A kind of resistance to scraped finish evaluation device of silver fiber, Including a base with attaching plug and switch, test board is provided with base, being provided with one on the test board is used for Simulate the analogue means of silver fiber silver fiber and crochet hook CONTACT WITH FRICTION when being knitted on knitting machine, be provided with analogue means with The resistance measurement device of silver fiber electrical connection to be measured and the Rubbing number for measuring silver fiber to be measured and crochet hook Rubbing number Sensor is gathered, in addition to one can drive the setting resistivity that analogue means stopping acts when resistance value reaches a certain setting value Threshold value automatic stop system, the setting resistivity threshold value automatic stop system include controller and the letter electrically connected respectively with the controller Memory module, digital editing module, signal output module, signal input module, liquid crystal display and Rubbing number display are ceased, The signal output module electrically connects with analogue means, signal input module and Rubbing number sensor and resistance measurement device Electrical connection, the digital editing module are connected with algebraic compiler.

The resistance to scraped finish evaluation device of above-mentioned silver fiber, the analogue means include one and are used for the one end of silver fiber to be measured Fixed insulation fixed component and the driving part for being used to pull silver fiber to be measured being connected with the other end of silver fiber to be measured, One is hung with silver fiber to be measured and acts in silver fiber to be measured the traction friction means for being downwardly applied to tractive force, the traction rubs The tractive force for wiping part is identical with the tractive force of knitting machine crochet hook.

The resistance to scraped finish evaluation device of above-mentioned silver fiber, the traction friction means are the mould hung in silver fiber to be measured Intend the crochet hook body contacted repeatedly when crochet hook feeds needle-bar with silver fiber to be measured, crochet hook body bottom is provided with balancing weight.

The resistance to scraped finish evaluation device of above-mentioned silver fiber, the insulation that the driving part includes being fixed on test board is raised, Rotatable rotating shaft of its axis perpendicular to test board is provided with insulation projection, is provided with the rotating shaft and is treated for fixation Survey the conductive pole of silver fiber wherein one end.

The resistance to scraped finish evaluation device of above-mentioned silver fiber, resistance measurement device include a universal meter with two test pens, Two test pen is connected with the silver fiber one end to be measured being fixed in insulation fixed component and conductive pole respectively.

The resistance to scraped finish evaluation device of above-mentioned silver fiber, one is additionally provided with the base or test board and works as silver fiber quilt to be measured The emergency stop device cut off the electricity supply immediately when balancing weight drives crochet hook body to fall after wear and rupture, the emergency stop device are located at balancing weight Lower section.

The resistance to scraped finish evaluation device of above-mentioned silver fiber, it is stable that being used for of allowing crochet hook body to pass through is provided with the test board And the spacing crochet hook body and balancing weight to be moved up and down with silver fiber to be measured when silver fiber to be measured moves up and down with driving part Guide holder.

The advantages of silver fiber of the present invention resistance to scraped finish evaluation device is:The present invention simulates silver fiber in weaving process exactly In be subject to pull, bend and act on the friction of hardware etc. repeatedly, and simple in construction, easy to operate, test result standard Really, the resistivity of silver fiber during any setting friction valve can be obtained, and test result is provided in a manner of data and chart etc..Adopt The mode controlled with controller signals, test is simple, easy to operate, and the device can be examined to the silver-plated amount of finished product silver plated fiber Survey and control, can be determined that the quality and weavability of silver fiber after advance detection, and be directed to specific silver fiber fabric Requirement shift to an earlier date preferred weaving process and fabric construction, and then ensure that to obtain the quality of silver plated fiber, ensure that silver plated fiber The shielding property of fabric, effectively increase the service life of silver-plated fiber fabric.

Brief description of the drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the circuit structure block diagram of the present invention;

Fig. 3 is the partial structurtes enlarged drawing of I parts in Fig. 1;

Fig. 4 is the partial structurtes enlarged drawing of II parts in Fig. 1.

Embodiment

Below in conjunction with the accompanying drawings and specific embodiment is described in further details to the present invention;

As shown in Figure 1,2,3, 4, the resistance to scraped finish evaluation device of a kind of silver fiber, including one have attaching plug 1 and switch 2 Base 3, vertical test board 4 is provided with the base 3, one is provided with test board 4 and is used to simulate silver fiber 5 in knitting machine The analogue means 6 of silver fiber 5 and crochet hook CONTACT WITH FRICTION, is provided with analogue means 6 and is electrically connected with silver fiber 5 to be measured during upper knitting The resistance measurement device 7 and the Rubbing number for measuring silver fiber 5 to be measured and crochet hook Rubbing number connect gathers sensor 8, Also include a setting resistivity threshold value automatic stop system that the stopping of analogue means 6 can be driven to act when resistance value reaches a certain setting value System, the setting resistivity threshold value automatic stop system include controller and the information electrically connected respectively with the controller storage mould Block, digital editing module, signal output module, signal input module, liquid crystal display 22 and Rubbing number display 21, it is described Signal output module electrically connects with analogue means 6, signal input module and Rubbing number sensor 8 and resistance measurement device 7 Electrical connection, the digital editing module are connected with algebraic compiler 23.

Analogue means 6 include one be used for the insulation fixed component 9 of fixing the one end of silver fiber 5 to be measured and with silver to be measured The driving part 10 for being used to pull silver fiber 5 to be measured of the other end connection of fiber 5, a work is hung with silver fiber 5 to be measured Be downwardly applied to the traction friction means 11 of tractive force in silver fiber 5 to be measured, the tractive force of the traction friction means 11 with The tractive force of knitting machine crochet hook is identical.Traction friction means 11 be hang in silver fiber 5 to be measured one simulation crochet hook with it is to be measured Silver fiber 5 feeds the crochet hook body 12 contacted repeatedly during needle-bar, and the bottom of crochet hook body 12 is provided with balancing weight 13.Driving part 10 Including the insulation projection 14 being fixed on test board 4, in insulation projection 14 be provided with its axis turns perpendicular to test board 4 Dynamic rotating shaft 15, the conductive pole 16 for fixing silver fiber 5 to be measured wherein one end is provided with the rotating shaft 15.Rotating shaft 15 can lead to Cross conventional servomotor or the adjustable motor of ordinary rotational speed drives and rotated, the technology is the conventional skill of those skilled in the art Art means, not described here any more, resistance measurement device 7 include a universal meter 18 with two test pens 17, can also use Resistance meter, two test pen 17 respectively be fixed on insulation fixed component 9 on silver fiber to be measured 5 one end and conduction Post 16 connects.Be additionally provided with base 3 or test board 4 one when silver fiber 5 to be measured be worn fracture after balancing weight 13 drive hook The emergency stop device 19 that needle body 12 is cut off the electricity supply immediately when falling, the emergency stop device 19 are located at the lower section of balancing weight 13.Testing It is stable and spacing when silver fiber 5 to be measured moves up and down with driving part 10 that being used for of allowing crochet hook body 12 to pass through is provided with plate 4 When with silver fiber 5 to be measured move up and down crochet hook body 12 and balancing weight 13 guide holder 20.

In use, setting corresponding Rubbing number beforehand through algebraic compiler 23, the Rubbing number passes through digital editing Module via controller is stored in information storage module, now, opens switch 2, the driving part 10 on analogue means 6 passes through motor Rotating shaft 15 is driven to rotate, by the Action of Gravity Field of balancing weight 13, crochet hook body 12 starts to simulate the friction that knitting machine carries out silver fiber, When the Rubbing number that Rubbing number collection sensor 8 collects reaches identical with setting value, Rubbing number collection sensor 8 will Signal reaches controller through signal input module, and controller sends stop signal to analogue means 6, mould through signal output module The motor for intending device 6 is shut down, and now the resistivity of silver fiber is inputted signal through signal by resistance measurement device 7 Module reaches liquid crystal display 22, you can reads the size of the resistivity in the friction setting value.

Certainly, it is limitation of the present invention that described above, which is not, and the present invention is also not limited to the example above, the art Those of ordinary skill, in the essential scope of the present invention, the variations, modifications, additions or substitutions made, should all belong to the present invention Protection domain.

Claims (5)

1. a kind of resistance to scraped finish evaluation device of silver fiber, including a base with attaching plug and switch, it is provided with base Test board, it is characterised in that:Be provided with the test board one be used for simulate silver fiber on knitting machine be knitted when silver fiber with The analogue means of crochet hook CONTACT WITH FRICTION, the analogue means include one and are used to consolidate the insulation that the one end of silver fiber to be measured is fixed The driving part for being used to pull silver fiber to be measured determined part and be connected with the other end of silver fiber to be measured, in silver fiber to be measured It is hung with one and acts in silver fiber to be measured the traction friction means for being downwardly applied to tractive force, the traction of the traction friction means Power is identical with the tractive force of knitting machine crochet hook;It is described traction friction means be hang in silver fiber to be measured one simulation crochet hook with The crochet hook body contacted repeatedly during silver fiber feeding needle-bar to be measured, is provided with balancing weight in crochet hook body bottom, is set on analogue means It is equipped with the resistance measurement device that is electrically connected with silver fiber to be measured and for measuring rubbing for silver fiber to be measured and crochet hook Rubbing number Number collection sensor is wiped, in addition to one can drive the setting that analogue means stopping acts when resistance value reaches a certain setting value Resistivity threshold value automatic stop system, the setting resistivity threshold value automatic stop system include controller and are electrically connected respectively with the controller Information storage module, digital editing module, signal output module, signal input module, liquid crystal display and the Rubbing number connect Display, the signal output module electrically connect with analogue means, signal input module and Rubbing number sensor and resistance value Measurement apparatus electrically connects, and the digital editing module is connected with algebraic compiler.
2. the resistance to scraped finish evaluation device of silver fiber according to claim 1, it is characterized in that:The driving part includes being fixed on Insulation on test board is raised, and rotatable rotating shaft of its axis perpendicular to test board is provided with projection insulating, described turn The conductive pole for fixing silver fiber to be measured wherein one end is provided with axle.
3. the resistance to scraped finish evaluation device of silver fiber according to claim 1, it is characterized in that:Resistance measurement device includes a tool There is the universal meter of two test pens, two test pen is respectively with being fixed on the silver fiber one end to be measured insulated in fixed component and leading Electric post connection.
4. the resistance to scraped finish evaluation device of silver fiber according to claim 3, it is characterized in that:Also set on the base or test board It is equipped with an emergency stop device cut off the electricity supply immediately when balancing weight drives crochet hook body to fall after silver fiber to be measured is worn fracture, institute Emergency stop device is stated below balancing weight.
5. the resistance to scraped finish evaluation device of silver fiber according to claim 4, it is characterized in that:Permission is provided with the test board It is stable and spacing transported up and down with silver fiber to be measured when silver fiber to be measured moves up and down with driving part that what crochet hook body passed through be used for Dynamic crochet hook body and the guide holder of balancing weight.
CN201410168875.2A 2014-04-25 2014-04-25 The resistance to scraped finish evaluation device of silver fiber CN103926162B (en)

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CN105510715B (en) * 2016-01-22 2019-05-24 青岛大学 A kind of silver fiber fabric electric conductivity test method and device

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CN203117064U (en) * 2013-02-05 2013-08-07 东华大学 Friction simulated instrument for superfine metal wires
CN103454213A (en) * 2013-08-28 2013-12-18 东华大学 Method and device suitable for measuring fluffing and pilling amount and abrasion amount of textile

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