CN105067800A - Spraying experimental device and detection method for waterproof function of sheep leather fleece - Google Patents

Abstract

A detection method for the waterproof function of a sheep leather fleece comprises the following steps: a, taking a 200 mm*200 mm square leather block from a fleece sample, and damping the square leather block in standard atmosphere of a temperate zone; b, placing tap water filtered by single-layer filter paper into a beaker to be heated up so as to keep the water temperature at 24 DEG C during detection; c, fixing the sample on a square bi-metal frame to enable the sample to form a crease-free smooth surface, then placing the square bi-metal frame on an inclined plane of a support platform, upwardly placing the fleece to enable the center of a nozzle to be aligned with the center of the square bi-metal frame, and enabling the direction of the fleece to be consistent with the direction of water flow flowing out of the fleece; d, pouring filtered and heated water into a funnel of a tester to be sprayed onto the fleece sample to be detected, continually injecting water during spraying, and spraying for 15-20 s; e, after finish of spraying, according to reference of the five-level standard photograph, and performing visual observation on the wetting degree of the sample to evaluate the waterproof level of fur to be detected. The detection method provided by the invention is complete and scientific in system.

Description

The spray experimental provision of sheepskin fleece water-proof function and detection method

Technical field

The invention belongs to leather and fur products physical and chemical performance detection technique field, particularly relate to the spray experimental provision of sheepskin fleece water-proof function, the invention still further relates to the detection method of sheepskin fleece water-proof function.

Background technology

Fur is also known as fur coat, Mao Ge, and fur goods is always fashion, graceful synonym, have the title of " soft gold ".Along with the phychology gone back to nature with the mankind that improves constantly of living standards of the people constantly strengthens, the favorable rating of people to leather, fur and goods thereof also grows with each passing day.In order to meet consumption grade that people constantly promote and the pursuit to green consumption, leather and fur goods are towards ecology, personalized, functionalization, the future development of fashion-orientation and best quality.

With regard to the function of fur and goods thereof, the water resistance of fur has become one of study hotspot of current leather industry, and has obtained not striking achievement in research.But the detection method of that up to the present, there is no set of system, perfect relevant fur water resistance.

Summary of the invention

The object of the present invention is to provide a kind of spray experimental provision of sheepskin fleece water-proof function, another object of the present invention is to the detection method that a kind of sheepskin fleece water-proof function is provided.

The present invention is realized by following scheme: a kind of spray experimental provision of sheepskin fleece water-proof function, is characterized in that: this device comprises levelling bench, brace table, vertical rack, horizontal stand, glass funnel, nozzle and square-shaped metal frame; Levelling bench one end arranges vertical rack, the other end arranges brace table, brace table is provided with inclined-plane, horizontal stand one end is installed on vertical rack top, the horizontal stand other end is provided with annular filtration stand, mounting glass funnel on annular filtration stand, glass funnel lower end connects nozzle, and above the inclined-plane being placed on brace table after square-shaped metal frame being installed tested sample, the geometric center of tested sample is positioned at immediately below the geometric center of nozzle.

A detection method for sheepskin fleece water-proof function, comprises the steps:

A, get from fur sample the square skin bit that area is 200mm × 200mm, under being positioned over temperate zone normal atmosphere, carry out damping; During damping, air should be made unimpeded to flow through sample, be placed into till reaching balance with air always;

B, put into beaker by with the tap water of individual layer Filter paper filtering, heating, when ensureing to measure, water temperature is at 24 DEG C;

C, sample is fixed on the square thermometal frame of outer length of side 200mm, sample is made to form a smooth surface without scrimp, then above inclined-plane square-shaped metal frame being positioned over brace table, fleece is upwards placed, and makes the center of nozzle aim at the central authorities of square-shaped metal frame; And make the direction of fleece (from first to last the trend of fleece rearwardly tilts from head) consistent with the direction of the current flowing out fleece;

D, pour in the funnel of tester by the water of step b gained filtering and heating, make it spray on fur sample to be measured, continuous water filling during spray, keep height of water level constant, hydraulic pressure is constant, spray time 15 ~ 20 seconds;

E, reference shine and classification, after spray terminates, and reference standard sample photograph, range estimation sample wetness degree, evaluates fur waterproof rank to be measured; Standard sample according to be divided into one-level, secondary, three grades, level Four, Pyatyi, the water resistance of Pyatyi is best.

The invention provides set of system, the detection method of fur water resistance that is complete, science.The water resistance of fleece is divided into Pyatyi and has formulated corresponding reference photograph by the inventive method, by the contrast with reference photograph, just can determine the water resistance of fleece.Water spray on the specimen surface tightened, makes it produce wetting phenomena by the present invention.The size of this wetness degree depends on the size of fleece waterproof ability, and by evaluating its water resistance with reference standard sample according to carrying out ready visual contrast with wetting sample, spray experimental provision is simple, and detection method is simple and easy to do.

Accompanying drawing explanation

Fig. 1 is the structural representation of spray experimental provision,

Fig. 2 is the structural representation of nozzle,

Fig. 3 is the upward view of Fig. 2,

Fig. 4 is the graph of a relation of square thermometal frame and test specimen,

Fig. 5 is the cut-open view after Fig. 4 installs trip bolt,

Fig. 6 is primary standard sample photograph and picture,

Fig. 7 is secondary standard sample photograph and picture,

Fig. 8 is grade III Standard sample photograph and picture,

Fig. 9 is level Four standard sample photograph and picture,

Figure 10 is Pyatyi standard sample photograph and picture,

Figure 11 is that tested sample tests according to the present invention the picture that gained soaks sample.

In figure: 1-glass funnel, 2-horizontal stand, 3-rubber tube, 4-nozzle, 401-spray orifice, 5-vertical rack, 6-sample, 7-square thermometal frame, 8-brace table, 9-levelling bench, 10-trip bolt, the angle of A-between inclined-plane and levelling bench, B-metal frame inside casing length of side, C-metal frame housing length of side, H1-tested sample geometric center is to the height of nozzle lower surface, the height of H2-glass funnel upper surface to nozzle lower surface, h-nozzle height, d-spray orifice end face diameter, d1-spray orifice end face first lap spray orifice place circle diameter, d2-spray orifice end face second encloses spray orifice place circle diameter, d3-nozzle upper diameter.

Embodiment

Device embodiment, as shown in Figure 1: a kind of spray experimental provision of sheepskin fleece water-proof function, is characterized in that: this device comprises levelling bench 9, brace table 8, vertical rack 5, horizontal stand 2, glass funnel 1, nozzle 4 and square thermometal frame 7, levelling bench 9 one end arranges vertical rack 5, the other end arranges brace table 8, brace table 8 is provided with inclined-plane, horizontal stand 2 one end is installed on vertical rack 5 top, horizontal stand 2 other end is provided with annular filtration stand, mounting glass funnel 1 on annular filtration stand, glass funnel 1 lower end connects nozzle 4, see Fig. 4 and Fig. 5: square thermometal frame 7 comprises two overlapping up and down metal frames, metal frame inside casing length of side B is 190 millimeters, metal frame housing length of side C is 200 millimeters, tested sample 6 accommodates and is fixed between two metal frames, tested sample 6 and two metal frames are fixed by trip bolt 10, above the inclined-plane being placed on brace table 8 after tested sample 6 installed by square thermometal frame 7, the geometric center of tested sample 6 is positioned at immediately below the geometric center of nozzle 4.

Glass funnel 1 lower end outer wall and nozzle 4 upper end outer wall are set with rubber tube 3, and both guarantees are airtight, and water can not outflow; Included angle A between inclined-plane and levelling bench is 45 °; Tested sample geometric center is 150 millimeters, up-down error 2 millimeters to the height H 1 of nozzle lower surface, and the height H 2 of glass funnel upper surface to nozzle lower surface is 200 millimeters, up-down error 10 millimeters; Glass funnel 1 diameter at butt end is 150 millimeters.

See Fig. 2: the spray orifice end face diameter d of nozzle 4 is 32 millimeters, up-down error 0.5 millimeter, and nozzle height h is 49 millimeters, up-down error 0.38 millimeter, and nozzle upper diameter d3 is 8.8 millimeters, up-down error 0.25 millimeter.

See Fig. 3: spray orifice end face center is provided with a spray orifice 401, spray orifice end face first lap spray orifice place even circumferential is provided with six spray orifices 401, and spray orifice end face second encloses spray orifice place even circumferential and is provided with 12 spray orifices 401;

Spray orifice end face first lap spray orifice place circle diameter d1 is 10 millimeters, up-down error 0.5 millimeter, and it is 21 millimeters, up-down error 0.5 millimeter that spray orifice end face second encloses spray orifice place circle diameter d2.

Embodiment of the method,

1. get from fur sample the square skin bit that area is 200mm × 200mm, under being positioned over temperate zone normal atmosphere, carry out damping, 48 hours damping time.

2. put into beaker by with the tap water of individual layer Filter paper filtering, heating, during mensuration, water temperature is at 24 DEG C.

3. sample is fixed on square-shaped metal frame, makes sample form a smooth surface without scrimp, then metal frame is placed on the support of tester; Fleece is upwards placed, and makes the center of nozzle aim at the central authorities of metal frame.The direction of fleece should be made consistent with the direction of the current flowing out fleece.

4. pour in the funnel of tester by the water filtered, make it spray on fur sample to be measured, continuous water filling during spray, keep glass funnel full-water level height constant, hydraulic pressure is constant, spray time 20 seconds.

5. spray result as shown in figure 11.

Testing result: contrasted by the standard sample photograph and picture spraying five ranks that result and Fig. 6 to Figure 10 provide shown in Figure 11, can determine the classification of waterproof of this sample and Fig. 8 roughly the same, therefore judge that the waterproof rank of tested fur sample is as three grades.

Claims (8)

1. a spray experimental provision for sheepskin fleece water-proof function, is characterized in that: this device comprises levelling bench (9), brace table (8), vertical rack (5), horizontal stand (2), glass funnel (1), nozzle (4) and square thermometal frame (7); Levelling bench (9) one end arranges vertical rack (5), the other end arranges brace table (8), brace table (8) is provided with inclined-plane, horizontal stand (2) one end is installed on vertical rack (5) top, horizontal stand (2) other end is provided with annular filtration stand, mounting glass funnel (1) on annular filtration stand, glass funnel (1) lower end connects nozzle (4), above the inclined-plane being placed on brace table (8) after square thermometal frame (7) installs tested sample (6), the geometric center of tested sample (6) is positioned at immediately below the geometric center of nozzle (4).

2. the spray experimental provision of a kind of sheepskin fleece water-proof function as claimed in claim 1, is characterized in that: glass funnel (1) lower end outer wall and nozzle (4) upper end outer wall are set with rubber tube (3).

3. the spray experimental provision of a kind of sheepskin fleece water-proof function as claimed in claim 2, is characterized in that: the angle (A) between inclined-plane and levelling bench is 45 °.

4. the spray experimental provision of a kind of sheepskin fleece water-proof function as described in claim 1,2 or 3, it is characterized in that: square thermometal frame (7) comprises two overlapping up and down metal frames, the metal frame inside casing length of side (B) is 190 millimeters, the metal frame housing length of side (C) is 200 millimeters, tested sample (6) accommodates and is fixed between two metal frames, and tested sample (6) and two metal frames are fixed by trip bolt (10).

5. the spray experimental provision of a kind of sheepskin fleece water-proof function as claimed in claim 4, it is characterized in that: tested sample geometric center is 150 millimeters, up-down error 2 millimeters to the height (H1) of nozzle lower surface, the height (H2) of glass funnel upper surface to nozzle lower surface is 200 millimeters, up-down error 10 millimeters; Glass funnel (1) diameter at butt end is 150 millimeters.

6. the spray experimental provision of a kind of sheepskin fleece water-proof function as claimed in claim 5, it is characterized in that: spray orifice end face diameter (d) of nozzle (4) is 32 millimeters, up-down error 0.5 millimeter, nozzle height (h) is 49 millimeters, up-down error 0.38 millimeter, and nozzle upper diameter (d3) is 8.8 millimeters, up-down error 0.25 millimeter.

7. the spray experimental provision of a kind of sheepskin fleece water-proof function as claimed in claim 5, it is characterized in that: spray orifice end face center is provided with a spray orifice (401), spray orifice end face first lap spray orifice place even circumferential is provided with six spray orifices (401), and spray orifice end face second encloses spray orifice place even circumferential and is provided with 12 spray orifices (401); Spray orifice end face first lap spray orifice place circle diameter (d1) is 10 millimeters, up-down error 0.5 millimeter, and it is 21 millimeters, up-down error 0.5 millimeter that spray orifice end face second encloses spray orifice place circle diameter (d2).

8. a detection method for sheepskin fleece water-proof function, is characterized in that comprising the steps:

A, get from fur sample the square skin bit that area is 200mm × 200mm, under being positioned over temperate zone normal atmosphere, carry out damping; During damping, air should be made unimpeded to flow through sample, be placed into till reaching balance with air always;

B, put into beaker by with the tap water of individual layer Filter paper filtering, heating, when ensureing to measure, water temperature is at 24 DEG C;

C, to be fixed on square-shaped metal frame by sample, to make sample form a smooth surface without scrimp, above the inclined-plane then square-shaped metal frame being positioned over brace table, fleece is upwards placed, and makes the center of nozzle aim at the central authorities of square-shaped metal frame; And make the direction of fleece consistent with the direction of the current flowing out fleece;

D, pour in the funnel of tester by the water of step b gained filtering and heating, make it spray on fur sample to be measured, continuous water filling during spray, keep height of water level constant, hydraulic pressure is constant, spray time 15 ~ 20 seconds;

E, reference shine and classification, after spray terminates, and reference standard sample photograph, range estimation sample wetness degree, evaluates fur waterproof rank to be measured; Standard sample according to be divided into one-level, secondary, three grades, level Four, Pyatyi, the water resistance of Pyatyi is best.