CN105709404A

CN105709404A - Drag-reducing and wear-resisting hydrophobic ski board

Info

Publication number: CN105709404A
Application number: CN201610071518.3A
Authority: CN
Inventors: 宋小文; 张鸣晓; 林鹏哲
Original assignee: Zhejiang University ZJU
Current assignee: Zhejiang University ZJU
Priority date: 2016-02-01
Filing date: 2016-02-01
Publication date: 2016-06-29

Abstract

The invention discloses a drag-reducing and wear-resisting hydrophobic ski board.Semi-spherical or semi-ellipsoidal protruding unit bodies are regularly arranged on the surface of a ski board base.The surface, with the non-smooth structures, of the ski board base can effectively increase the contact angle of water drops and the bottom surface of the skid board, and thus the frictional drag between a snow ground surface and the bottom surface of the skid board is effectively reduced.Micron-sized gaps exit between the non-smooth protruding structures, sufficient ski wax is stored in the gaps, and thus the wear resistance of the ski board is improved.Compared with the prior art, the frictional drag between the snow ground surface and the ski board can be effectively reduced, and the wear resistance of the ski board can be effectively improved.

Description

A kind of hydrophobicity skis with drag-reducing abrasion-resisting effect

Technical field

The invention belongs to sports apparatus field, be specifically related to a kind of hydrophobicity skis with drag-reducing abrasion-resisting effect.

Background technology

Skis base is the orlop part of skis, is also the part contacted with snow face.The hope that base that can quickly slide is every Ski amateur can be obtained.The base that current most of skises use is all that plastic material is made.Plastic material base can be generally divided into two classes: a class is melted and moulded；Another kind of is squash type.Melting that to mould the skis made be first then plastic melt is being cut into the shape of skis, melt plastotype skis long service life, it is easy to maintenance, but it is the slowest to melt the skis speed moulded, the amount of waxing is minimum.Squash type skis with melt plastotype skis contrast, plastics are first pulverized by squash type skis, excision forming again after then heating, compacting.Squash type skis compared to melt plastotype skis more solid, faster, wax, but squash type skis expensive, should not keep in repair.

Skis with the process of ground snow deposit relative motion in can produce violent friction, cause the abrasion of skis base.One secondary skis will lose its arch form curve after a long time use and straighten (it is inflexible to be generally known as).The arch form structure of skis is like the bow of hunter, if being placed on snow by skis, wrench and plate tail can land and the middle part of plate is unsettled.When athlete pushes down snow slab when revolution, strength is accumulated by snow slab just as bow, athlete just pushes next revolution when earth pressure release time, produces the effect of resilience.When the time length of skis will lose the ability of this resilience, skis is also eliminated.Skis also can come in contact with rock or other skis in motor process, also results in the abrasion of skis under such circumstances.When being seriously damaged at the bottom of plate, soft boards supporting substrates material is often marked very long groove by rock, also results in fractureing of skis when serious.

Skis is with the contact process of snow face, and skis susceptor surface can produce water membrane, and the interaction force between moisture film and skis base hampers the quick mobile of skis.Therefore the moistening degree that the translational speed of skis is necessary for reducing moisture film to skis base is improved, namely want liquid at the contact angle of skis base, contact angle is more little, and reaction liquid is more good to the wettability of the surface of solids, and the resistance of skis rapid movement is more big.Otherwise, contact angle is more big, it was shown that the hydrophobicity of the surface of solids is more good, and skis is easier to obtain quick motion.

The major way of present stage skis drag-reducing abrasion-resisting is to be coated with ski wax at skis base.Ski wax can make skis base have relatively low coefficient of friction with snow mask, reduces frictional force, improves the movement velocity of skis.Ski wax can also reduce the abrasion condition of skis planing surface, and the snow wax on bottom surface contacts with snow face, and the abrasion of snow wax instead of the abrasion of skis base itself.

But the ski wax spreading upon skis susceptor surface can, by snow deposit wearing away quickly, need constantly repeatedly wax, bothersome effort.And owing to wax layer surface is also hydrophilic surface, the moisture film being adsorbed on wax layer surface can quickly condense into ice sheet, the problem producing to be stained with snow.

Summary of the invention

In order to solve above-mentioned technical problem, the present invention proposes a kind of hydrophobicity skis with drag-reducing abrasion-resisting effect, this skis is by imitating the hydrophobicity non-smooth structure of lotus leaf surface, hydrophobicity and the wearability of skis can be effectively improved, reduce the frictional resistance of skis and snow face, the skis life-span can be extended and without repeatedly waxing.

The technical solution adopted in the present invention is:

A kind of hydrophobicity skis with drag-reducing abrasion-resisting effect, described skis susceptor surface makes the cell cube of the hemispherical or semielliptical shape projection of regular layout by Laser Processing or compressing technique, and cell cube is in the rectangular distribution of skis susceptor surface.

In technique scheme, described cell cube can be hemispherical protuberances, and cell cube is in the same size, and convex radius is 26 μm, between the cell cube of skis length direction, convex center is from for 20 30 μm, and between the cell cube of skis width, convex center is from for 15 25 μm.

Described cell cube can be the projection of semielliptical shape, cell cube is in the same size, the major axis of half and half elliposoidal projection is parallel with skis length direction, it is 58 μm, the short axle of semielliptical shape projection is less 2 μm than major axis, between the cell cube of skis length direction, convex center is from for 25 35 μm, and between the cell cube of skis width, convex center is from for 18 28 μm.

The hydrophobicity skis with drag-reducing abrasion-resisting effect of the present invention is by the abundant research to lotus leaf surface, and the convex hull-shaped Non-smooth surface form extracting lotus leaf surface is arranged in skis susceptor surface.Micron-sized convex closure shape non-smooth surface can effectively improve the water droplet contact angle in skis bottom surface, making skis bottom surface is hydrophobic surface from hydrophilic surface conversion, effectively reduce the contact area of water droplet and plate face, thus reducing frictional resistance between the two.There is micron order gap between Non-smooth surface convex closure structure, when backplate surface smears ski wax, ski wax can adequately fill up gap, ski wax is not easily worn, effectively improve the problem frequently waxed, define the effect being similar to miniature storage wax pond, thus improve the wearability of skis.

Accompanying drawing explanation

Lotus leaf surface pattern under Fig. 1 scanning electron microscope；

Fig. 2 hemispherical convex closure structure schematic diagram；

Fig. 3 hemispherical convex closure height dimension schematic diagram；

Fig. 4 semielliptical shape convex closure structure schematic diagram；

Fig. 5 semielliptical shape convex closure height dimension schematic diagram.

Detailed description of the invention

The animals and plants of nature have passed through the development of 1 years, and its surface has many excellent specific function states.In recent years, hydrophobic and super hydrophobic surface research becomes the focus of engineering circles research, and people thirst for calligraphy or painting model self-cleaning, antiseized outstanding from nature and find inspiration, solve the difficult problems such as the adhesion of engineering circles, abrasion, adhesion.As shown in Figure 1, lotus leaf surface is micron-sized non-smooth structure, and this kind of structure makes its surface form solid-liquid-gas compound interface, causes that water droplet can not infiltrate its surface, and the mental retardation waxiness crystalline material that its surface covers also play important function, the water droplet of lotus leaf surface arbitrarily can roll in all directions.

Therefore, by studying the Non-smooth surface convex closure structure on the surface of Folium Nelumbinis, the present invention proposes a kind of hydrophobicity skis with drag-reducing abrasion-resisting effect.Below in conjunction with the drawings and specific embodiments, the hydrophobicity skis with drag-reducing abrasion-resisting effect of the present invention is described in detail.

The technical solution adopted in the present invention is to have the hydrophobicity skis of drag-reducing abrasion-resisting effect, and described skis susceptor surface makes the bionical cell cube of the hemispherical or semielliptical shape projection of regular layout by Laser Processing or compressing technique.

As shown in Figure 2 and Figure 3, skis susceptor surface has the hemispheric convex closure shape cell cube of distributed rectangular, and hemispheric convex closure is in the same size, and each hemispheroidal radius R1 is 26 μm, the convex closure centre-to-centre spacing L1 being positioned at same row is 15 25 μm, and the convex closure centre-to-centre spacing L2 being positioned at same string is 20 30 μm.

As shown in Figure 4, Figure 5, skis susceptor surface has the convex closure shape cell cube of the semielliptical shape of distributed rectangular, the convex closure of semielliptical shape is in the same size, the major axis 2a of each semiellipsoid is parallel with skis length direction, it is 58 μm, short axle 2b is less 2 μm than major axis 2a, and the convex closure centre-to-centre spacing L3 being positioned at same row is 18 28 μm, and the convex closure centre-to-centre spacing L4 being positioned at same string is 25 35 μm.All with along skis length direction for row in such scheme, width is row.

The micron-sized convex closure shape non-smooth structure being arranged in skis susceptor surface can effectively improve the water droplet contact angle in skis bottom surface, making skis bottom surface is hydrophobic surface from hydrophilic surface conversion, effectively reduce the contact area of water droplet and plate face, thus reducing frictional resistance between the two.

There is micron order gap between Non-smooth surface convex closure structure, when backplate surface smears ski wax, ski wax can adequately fill up gap, ski wax is not easily worn, define the effect being similar to miniature storage wax pond, improve the wearability of skis, it is also possible to the problem that effective improvement is frequently waxed.

Claims

1. a hydrophobicity skis with drag-reducing abrasion-resisting effect, it is characterised in that: described skis susceptor surface regular arrangement has hemispherical or that semielliptical shape is protruding cell cube, and cell cube is in the rectangular distribution of skis susceptor surface.

2. the hydrophobicity skis with drag-reducing abrasion-resisting effect according to claim 1, it is characterized in that, described cell cube is hemispherical protuberances, cell cube is in the same size, convex radius is 26 μm, between the cell cube of skis length direction, convex center is from for 20 30 μm, and between the cell cube of skis width, convex center is from for 15 25 μm.

3. the hydrophobicity skis with drag-reducing abrasion-resisting effect according to claim 1, it is characterized in that, described cell cube is the projection of semielliptical shape, cell cube is in the same size, the major axis of half and half elliposoidal projection is parallel with skis length direction, is 58 μm, and the short axle of semielliptical shape projection is less 2 μm than major axis, between the cell cube of skis length direction, convex center is from for 25 35 μm, and between the cell cube of skis width, convex center is from for 18 28 μm.