JP3179220U - Wear-resistant sheet material - Google Patents

Abstract

An object of the present invention is to provide a wear-resistant sheet member that has low damage to a mating member, is excellent in wear resistance from the beginning, and maintains its wear resistance.
SOLUTION: A flexible sheet-like substrate 1, an organic resin layer 2a laminated on the surface of the sheet-like substrate 1, and a substantially spherical shape attached to the surface of the organic resin layer 2a before the organic resin layer 2a is cured. And a single-layer particle resin layer 2 composed of inorganic particles 2b.
[Selection] Figure 1

Description

  The present invention relates to a sheet member having excellent wear resistance. More specifically, the present invention relates to an abrasion-resistant sheet member that is used by being attached to a conveying part used for conveying an object.

  As a method for improving the wear resistance of the surface of a component such as a roller, there are thermal spraying and plating. However, the members that can be processed by spraying are limited to materials that can withstand the spraying temperature. Further, in plating, there are limitations on the types of members that can be processed due to adhesion due to the plating material, cracking due to the linear expansion coefficient, and the like.

  A wear-resistant sheet member that solves the problem of the above-described wear-resistant treatment has been developed (for example, see Patent Document 1). This is a sheet-like base material formed with a paint film containing spherical particles having high hardness.

Japanese Patent Laid-Open No. 11-302578

  In the conventional wear-resistant sheet member, if the spherical particles in the paint increase, the coating nozzle becomes clogged and it becomes difficult to apply the coating, so that the spherical particles cannot be increased. As a result, the spherical particles in the coating are non-uniform and the spacing between adjacent particles is wide. Moreover, the outermost surface that comes into contact with the object to be conveyed is not a particle but a coating resin.

  Therefore, the conventional wear-resistant sheet member is inferior in wear resistance particularly in the initial stage of running. Over time, the coating on the outermost surface is scraped off, and the article to be conveyed comes into contact with the coating resin in which the particles are dispersed, but the wear resistance is not good because the particle density is low and inhomogeneous. .

  For example, conventional sandpaper may be used as an abrasion-resistant sheet member that is attached to a part used for conveying an article to increase the abrasion resistance of the part. However, sandpaper is for polishing a mating member, and is highly fragile to the mating member, so it is not easy to use it by attaching it to a part used for conveyance.

  The present invention has been made in view of the above problems, and it is an object of the present invention to provide a wear-resistant sheet member that has low damage to a mating member, excellent wear resistance from the beginning, and that wear resistance lasts. It is said.

  The wear-resistant sheet member of the present invention made to solve the above problems is a flexible sheet-like base material, an organic resin layer laminated on the surface of the sheet-like base material, and before the organic resin layer is cured. And a single particle particle resin layer composed of substantially spherical inorganic particles attached to the surface of the organic resin layer.

  Since the substantially spherical particles are attached as a single layer to the surface of the organic resin layer before the organic resin layer is cured, the number of substantially spherical inorganic particles can be increased. As a result, the substantially spherical inorganic particles are uniformly and densely dispersed in the organic resin layer. In addition, the substantially spherical particles on the outermost surface are not covered with the organic resin. Therefore, since the article to be conveyed contacts the substantially spherical inorganic particles having a high density, the wear resistance is good. Further, since the inorganic particles are substantially spherical, it is possible to suppress damage to the conveyed article. Since a flexible sheet-like base material is used, the bending followability is high and it is easy to mount on a conveyance part used for conveyance. Moreover, since the substantially spherical inorganic particles are firmly fixed to the sheet-like base material with an organic resin layer as an adhesive, the substantially spherical inorganic particles are suppressed from peeling off.

  In the wear-resistant sheet member, the single-layer particle resin layer may have a plurality of single-layer particle resin layers laminated at least one layer.

  Since a plurality of substantially spherical inorganic particles are fixed, the wear resistance can be maintained for a long time. The number of layers to be laminated is 5 layers or less, preferably 3 layers or less. With five layers or less, the flexibility of the wear-resistant sheet member is good.

  Further, the sheet-like base material may have a thickness of 1 mm or less. Thereby, bending followability becomes still higher.

  The average surface roughness (Ra) of the surface of the sheet-like substrate on which the organic resin layer is formed is preferably 0.2 to 20 μm. Thereby, the adhesiveness of a sheet-like base material and an organic resin layer improves.

  The sheet-like substrate is preferably a resin or a metal. Thereby, a bending followability is high and it becomes difficult to tear.

  The hardness of the substantially spherical inorganic particles is preferably about twice or more higher than the hardness of the sheet-like substrate. Thereby, a material with low hardness can be used for a sheet-like base material, and bending followability improves further.

  The sheet-like substrate preferably has a hard Vickers hardness (Hv) of 130 or less. The bending followability can be further enhanced. In addition, since the hardness Hv of the substantially spherical inorganic particles is 200 or more, when the Hv of the sheet-like base material is 130 or less, the hardness of the substantially spherical inorganic particles can be about twice or more than the base material.

  The average particle diameter of the substantially spherical inorganic particles is preferably 10 to 200 μm. The average particle diameter of the substantially spherical inorganic particles is preferably 20 to 150 μm, more preferably 30 to 60 μm.

  The reason for setting the particle size to 10 μm or more is that when the particle size is 10 μm or more, the ratio that the particles are not buried in the organic resin layer laminated on the surface of the sheet-like substrate increases. The reason why the particle size is 200 μm or less is that when the particle size is 200 μm or less, the rate of peeling from the organic resin layer decreases.

  The substantially spherical inorganic particles may be glass particles. Since the substantially spherical inorganic particles do not contain glass particles, it is possible to further suppress damage to articles conveyed due to breakage of glass particles or the like.

  Since the substantially spherical particles are adhered to the surface of the organic resin layer before the organic resin layer is cured, the number of substantially spherical inorganic particles can be increased. As a result, the substantially spherical inorganic particles are uniformly and densely dispersed in the organic resin layer. In addition, the substantially spherical particles on the outermost surface are not covered with the organic resin. Therefore, the wear resistance is good. Further, since the inorganic particles are substantially spherical, it is possible to suppress damage to the conveyed article. Since a flexible sheet-like base material is used, bending followability is high.

It is a cross-sectional schematic diagram of the abrasion-resistant sheet | seat member of embodiment which concerns on this invention. It is a cross-sectional schematic diagram of the abrasion-resistant sheet | seat member of a deformation | transformation aspect. 2 is an enlarged cross-sectional photograph of the wear-resistant sheet member of Example 1. FIG. 6 is an enlarged cross-sectional photograph of the wear-resistant sheet member of Example 5. 10 is an enlarged cross-sectional photograph of a wear-resistant sheet member of Comparative Example 6.

  As shown in FIG. 1, the wear-resistant sheet member of the present invention is fixed to the surface of the sheet-like substrate 1, the organic resin layer 2a laminated on the surface of the sheet-like substrate 1, and the organic resin layer 2a. And a single-layer particle resin layer 2 composed of substantially spherical inorganic particles 2b.

  As the sheet-like substrate 1, a metal material, a polymer material, or the like is used, and a thin plate having a thickness of 1 mm or less, particularly a thin plate having a thickness of 0.5 mm or less, which could not be subjected to conventional sandblasting treatment, can be used. Since a thin plate having a thickness of 1 mm or less is sufficient, it is excellent in bending followability and can be wound around a conveyance part used for conveyance or the like.

  The metal material is preferably a low-hardness metal material having a hard Vickers hardness (Hv) of 130 or less, such as aluminum and its alloys, copper and its alloys, magnesium and its alloys, and soft iron, from the viewpoint of bending followability. Since most of the later-described substantially spherical inorganic particles 3 are about Hv200, if the Hv of the sheet-like substrate 1 is 130 or less, the hardness of the substantially spherical inorganic particles 3 is about twice the hardness of the sheet-like substrate 1. can do.

  When the sheet-like substrate 1 is a polymer material, polymer materials satisfying Hv 130 or less include polymethyl methacrylate (PMMA), cellulose acetate (MS), polycarbonate (PC), polyethylene terephthalate (PET), polybutylene terephthalate ( PBT), polyamide (PA), polyurethane (PU), polyvinyl chloride (PVC), polyvinylidene chloride (PVdC), polyvinyl alcohol (PVA), polystyrene (PS), styrene / acrylonitrile copolymer (AS), styrene・ Butadiene / acrylonitrile copolymer (ABS), polyethylene (PE), ethylene / vinyl acetate copolymer (EVA), polypropylene (PP), polyacetal (POM), polyphenylene sulfide (PPS), polyether ether ketone (PEEK) ), Crystalline polymer (LCP), polyarylate (PAR), policer Rufone (PSF), polyamideimide (PAI), polyetherimide (PEI), polyimide (PI), phenol (PF), urea (UF), melamine (MF), epoxy (EP), furan (FF), alkyd, Unsaturated polyester (UP), dialiphthalate (PDAP), plastics such as silicone, natural rubber (NR), isoprene rubber (IR), styrene rubber (SBR), butyl rubber (IIR), ethylene / propylene rubber (EPDM)・ EPM), chloropyrene rubber (CR), chlorosulfonated polyethylene rubber (CSM), ethylene / vinyl acetate rubber (EVA), epichlorohydrin rubber (CO / ECO), nitrile rubber (NBR), acrylic rubber (ACM / ANM), Rubber materials such as urethane rubber (U), polysulfide rubber (T), silicone rubber (Si), and fluoro rubber (FKM) are preferred.

  For example, an epoxy resin is spray-coated on the sheet-like base material 1 to form the organic resin layer 2a, and the substantially spherical inorganic particles are deposited on the wet organic resin layer 2a. Then, when dried and fired, the substantially spherical inorganic particles 2b are fixed in a single layer as shown in FIG.

The step by repeating the single layer particles resin layer 2 as shown in FIG. 2 2 ₁ and the non-adhesive sheet member comprising two layers of 2 ₂ is manufactured.

  As the organic resin forming the organic resin layer 2a, a phenol resin, a melamine resin, a urea resin, a polybismaleide / triazine resin, a polyamideimide resin, or the like can be used in addition to the polyimide resin and the epoxy resin.

  The thickness of the organic resin layer 2a is in the range of 1 to 200 μm, preferably in the range of 5 to 30 μm. The reason for setting the thickness to 1 μm or more is that when the thickness is 1 μm or more, the fixing force of the substantially spherical inorganic particles 3 increases. The reason for setting the thickness to 200 μm or less is that when the thickness is set to 200 μm or less, the occurrence of warpage of the sheet-like substrate 1 is suppressed.

  A thermosetting resin is preferred as the organic resin binder. When the organic resin binder is a thermosetting resin, even if the sheet-like substrate 1 has low heat resistance or deformation and softening of the resin due to frictional heat or heating, the separation and overlap of the substantially spherical inorganic particles 3 are suppressed. Is done.

  Before coating the organic resin binder, the sheet-like substrate 1 is preferably roughened by chemical treatment, sandblasting, or the like. The surface roughness (Ra) of the roughened sheet-like substrate 1 is preferably 0.2 to 20 μm. Thereby, the coupling | bonding of the organic resin layer 2a and the sheet-like base material 1 can be strengthened. Here, the surface roughness (Ra) indicates the centerline average roughness of JIS B0601: 2001.

  Examples of the substantially spherical inorganic particles 2b include ceramic beads and sprayed particles of inorganic material, but sprayed particles of inorganic material are functional (wear resistance and high hardness) and economically preferable. Glass beads are not preferred because they are easily broken by impact and damage the mating member. Here, the substantially spherical particles include spherical particles without angular portions, non-spherical particles, or cocoon particles, cocoon particles, and ellipsoid particles in which a plurality of spherical particles are connected.

Thermally sprayed inorganic materials include metals (aluminum and alloys thereof, cobalt alloys, copper and alloys thereof, iron alloys, molybdenum and alloys thereof, nickel and alloys thereof, titanium, tantalum, tungsten, etc.), cermets (chromium carbide, tungsten). Sheet-type base selected from carbide (titanium carbide, titanium carbide), ceramic (single or mixture of Al ₂ O ₃ , SiO ₂ , TiO ₂ , Cr ₂ O ₃ , MgO, ZrO ₂ , Y ₂ O ₃ ) One having a higher hardness than the material 1 can be selected and used.

  The wear-resistant sheet member of this embodiment is used for conveying parts such as metal and ceramics.

Example 1
A 100 mm × 50 mm × 1 mm (thickness) PET resin degreased with an acetone solvent and dried was used as a flexible sheet-like substrate. 10 μm of epoxy (manufactured by Nagase Chemtech Co., Ltd., AV138) was coated on the sheet-like substrate, and substantially spherical Al ₂ O ₃ particles (Nippon Yutech Co., Ltd., 1275H, hardness were coated on the entire surface. : Hv697, particle size: 20-53 μm), the non-adhering particles were blown with air and leveled with a roller. Then, it dried at normal temperature for 24 hours. This is the wear-resistant sheet member of Example 1.

In the case of the wear-resistant sheet member of Example 1, as shown in FIG. 3, the substantially spherical Al ₂ O ₃ particles are individually dispersed and fixed so as to form a single layer on the surface without being embedded through the epoxy surface. Has been.

(Example 2)
A polycarbonate resin 100 mm × 50 mm × 1 mm (thickness) degreased with an acetone solvent and dried was used as a sheet-like substrate. On this sheet-like base material, 10 μm of epoxy (manufactured by Nagase Chemtech Co., Ltd., AV138) was coated and substantially spherical NiCrBSiFe particles (Nippon Yutech Co., Ltd., 10680, hardness: Hv213, (Particle size: 45 to 150 μm) was applied, particles that did not adhere were sprayed with air, and leveled with a roller. Then, it dried at normal temperature for 24 hours. This is the wear resistant sheet member of Example 2.

(Example 3)
Nitrile rubber (NBR) 100 mm × 50 mm × 1 mm (thickness) degreased with an acetone solvent and dried was used as a sheet-like substrate. On this sheet-like base material, 20 μm of epoxy / urethane (LOAD, LORD7701) was coated, and on the entire surface, approximately spherical Al ₂ O ₃ particles (Nippon Yutech Co., Ltd., 1275H, hardness: Hv697) , Particle size: 20-53 μm), particles that did not adhere were swept with air and leveled with a roller. Then, it dried at normal temperature for 24 hours. This is the wear-resistant sheet member of Example 3.

Example 4
A SUS304 (hardness: Hv150) 100 mm × 100 mm × 0.1 mm (thickness) degreased with an acetone solvent and dried was used as a flexible sheet-like substrate. On this sheet-like base material, 12 μm of polyimide (Ube Industries, U-Varnish A) was applied, and substantially spherical NiCrBSiFe particles (Nippon Yutech Co., Ltd., 10680, hardness: Hv213, particle size: 45 to 150 μm), the non-adhering particles were blown with air and leveled with a roller. Then, it dried at normal temperature for 24 hours. This is the wear resistant sheet member of Example 4.

(Example 5)
A JIS standard A5052 (aluminum purity: 99.52%, hardness: Hv55) 100 mm × 50 mm × 0.3 mm (thickness) degreased with an acetone solvent and dried was used as a flexible sheet-like substrate. 5 μm of polyimide (Ube Industries, U-Varnish A) was coated on this sheet-like substrate, and substantially spherical Al ₂ O ₃ particles (Nippon Yutech Co., Ltd., 1275H) were coated on the entire surface. , Hardness: Hv697, particle size: 20-53 μm), the non-adhering particles were wiped with air and leveled with a roller. Then, it dried at 80 degreeC for 60 minutes, and baked at 350 degreeC x 30 minutes. The polyimide is coated, and the spherical particles of Al ₂ O ₃ are applied over the entire surface. The particles that do not adhere are wiped off with air, leveled with a roller, then dried at 80 ° C. for 60 minutes, and then 350 ° C. × 30 minutes. The firing process was repeated three times. This is the wear resistant sheet member of Example 5.

In the case of this wear-resistant sheet member, substantially spherical Al ₂ O ₃ particles are laminated in three layers as shown in FIG.

(Example 6)
In Example 5, “substantially spherical Al ₂ O ₃ particles (manufactured by Nippon Yutech Co., Ltd., 1275H, hardness: Hv697, particle size: 20 to 53 μm”) were changed to “substantially spherical NiCrBSiFe particles (manufactured by Nippon Yutech Co., Ltd., 10680, This is the same as Example 5 except that the hardness is changed to “Hv213, particle size: 45 to 150 μm”.

(Comparative Example 1)
# 180 sandpaper (ABRASIVE PAPER # 180 manufactured by KOVAX) is used as the wear-resistant sheet member of Comparative Example 1.

(Comparative Example 2)
The same JIS standard A5052 as in Example 5 (aluminum purity: 99.52%, hardness: Hv55) 100 mm × 100 mm × 0.3 mm (thickness) was sprayed to roughen it. This is the wear-resistant sheet member of Comparative Example 2.

(Comparative Example 3)
100 mm × 100 mm × 0.3 mm (thickness) of the same JIS standard A5052 (aluminum purity: 99.52%, hardness: Hv55) as in Example 5 was degreased with an acetone solvent and dried to obtain a sheet-like substrate. . The same polyimide (Example: Ube Industries, Ltd., U-varnish A) as Example 5 was coated on this sheet-like base material by 12 μm, and substantially square NiAl particles (Nihon Yutec Co., Ltd.) were coated on the entire surface. Manufactured, 29029, hardness: Hv150, particle size: 35 to 130 μm), particles that did not adhere were wiped off with air and leveled with a roller. Thereafter, as in Example 5, it was dried at 80 ° C. for 60 minutes and then calcined at 350 ° C. for 30 minutes. This is the wear-resistant sheet member of Comparative Example 3.

(Comparative Example 4)
Comparative Example 3 “substantially square NiAl particles (manufactured by Nippon Yutec Co., Ltd., 29029, hardness: Hv150, particle size: 35 to 130 μm)” was designated as “SiC powder (Showa Denko Co., Ltd., A-4, hardness: Hv2150, particle size: less than 5 μm) ”. This is the wear resistant sheet member of Comparative Example 4.

(Comparative Example 5)
The “substantially square NiAl particles (manufactured by Nippon Yutec Co., Ltd., 29029, hardness: Hv150, particle size: 35 to 130 μm)” of Comparative Example 3 were changed to “ZrSiO ₄ particles (Fuji Zircon Beads, Fuji Zircon Bead FZS-300). , Hardness: Hv1250, particle size: 300 to 425 μm), which is the same as Comparative Example 3. This is the wear-resistant sheet member of Comparative Example 5.

(Comparative Example 6)
This is a comparative example of Example 1. A 100 mm × 50 mm × 1 mm (thickness) PET resin degreased with an acetone solvent and dried was used as a flexible sheet-like substrate. On this sheet-like base material, epoxy (Nagase Chemtech Co., Ltd., AV138) and substantially spherical Al ₂ O ₃ particles (Nippon Yutech Co., Ltd., 1275H, hardness: Hv697, particle size: 20-53 μm) 100 parts were added and spray-coated. Then, it dried at normal temperature for 24 hours. This is the wear resistant sheet member of Comparative Example 6.

  The wear-resistant sheet member of Comparative Example 6 corresponds to the conventional wear-resistant sheet member described in the background art. As shown in FIG. 5, this wear-resistant sheet member has non-uniform spherical Al2O3 particles in the coating film and a wide interval between adjacent particles. Moreover, the outermost surface in contact with the article to be conveyed is not a particle but a coating film resin.

  The wear resistance of the wear-resistant sheet members of Examples 1 to 6 and the wear-resistant sheet members of Comparative Examples 1 to 6 were evaluated as follows.

  The abrasion resistance was evaluated by the amount of change in roughness after polishing with two types of sand paper and before polishing. That is, the center line average roughness Ra before polishing and the center line average roughness Ra after polishing 20 times with # 400 and # 180 sandpaper (KOVAX, ABRASIVE PAPER # 400, # 180) are measured for surface roughness. It was evaluated by measuring with a measuring instrument (Tokyo Seimitsu Co., Ltd., surface roughness shape measuring machine, HANDY-SURF E-35A).

  The surface roughness Ra after rubbed 20 times by pressing 100 mm x 100 mm x 1 mm (thickness) of JIS standard A5052 (aluminum purity: 99.52%) under a load of 1 kg. Was measured by measuring with a surface roughness measuring instrument (Tokyo Seimitsu Co., Ltd., surface roughness shape measuring instrument, HANDY-SURF E-35A).

  The bending followability and base material deformability of the wear resistant sheet members of Examples 1 to 6 and Comparative Examples 1 to 6 were evaluated as follows. That is, the bending state when bent by hand to wrap around a round bar having a diameter of 150 mm was visually evaluated. In addition, the deformation of the substrate after the wear resistance treatment was performed on the substrate was visually evaluated.

  Table 1 shows each measurement result and evaluation result.

  Comparison of the wear-resistant sheet member of Example 1 (FIG. 3), the wear-resistant sheet member of Example 5 (FIG. 4), and the wear-resistant sheet member of Comparative Example 6 (FIG. 5) reveals the following. . That is, in the case of the wear-resistant sheet member of the present invention, the substantially spherical inorganic particles are uniformly and densely dispersed in the organic resin layer, whereas the outermost substantially spherical particles are not covered with the organic resin. In the case of a conventional wear-resistant sheet member, the substantially spherical particles in the coating film are non-uniform and the interval between adjacent particles is wide, and the outermost surface that comes into contact with the article to be conveyed is not a particle but a coating film resin I understand.

  Further, as can be seen from Table 1, for example, as in the # 180 paper test, the change amount before and after polishing of the wear-resistant sheet member of the example is less than 0.5 μm, whereas the wear-resistant sheet of the comparative example That of the member is about 1 to 3 μm. Therefore, it turns out that the abrasion-resistant sheet | seat member of an Example is excellent in abrasion resistance. The reason is that the substantially spherical inorganic particles are exposed on the surface in the case of the wear-resistant sheet member of the present invention, and are covered with resin in the case of the conventional wear-resistant sheet member. be able to.

  Further, the damage to the counterpart material is about 0.7 in the case of the wear-resistant sheet member of the embodiment, while the roughness Ra of the counterpart material is about 0.7 in the case of the wear-resistant sheet member of the comparative example. .4 or 1.85, about twice or about 3 times larger. Therefore, it turns out that the abrasion-resistant sheet | seat member of an Example is excellent in the damage property to the other party material.

  Moreover, the abrasion-resistant sheet | seat member of an Example was excellent in bending followability, and did not deform | transform.

DESCRIPTION OF SYMBOLS 1 ... Sheet-like base material 2 ... Single-layer particle resin layer 2a ... Organic resin layer 2b ... Almost spherical inorganic particle

Claims (9)

A flexible sheet substrate;
A single particle resin layer comprising an organic resin layer laminated on the surface of the sheet-like substrate and substantially spherical inorganic particles adhered to the surface of the organic resin layer before the organic resin layer is cured. A wear-resistant sheet member characterized by the above.   The wear-resistant sheet member according to claim 1, wherein the single-layer particle resin layer has a plurality of single-layer particle resin layers laminated at least one layer.   The wear-resistant sheet member according to claim 1 or 2, wherein the sheet-like substrate has a thickness of 1 mm or less.   The wear-resistant sheet member according to any one of claims 1 to 3, wherein an average surface roughness (Ra) of the surface of the sheet-like substrate on which the organic resin layer is formed is 0.2 to 20 µm.   The wear-resistant sheet member according to any one of claims 1 to 4, wherein the sheet-like base material is a resin or a metal.   The wear-resistant sheet member according to any one of claims 1 to 5, wherein the hardness of the substantially spherical inorganic particles is about twice or more higher than the hardness of the sheet-like substrate.   The wear-resistant sheet member according to any one of claims 1 to 6, wherein the sheet-like base material has a hard Vickers hardness (Hv) of 130 or less.   The wear resistant sheet member according to any one of claims 1 to 7, wherein an average particle diameter of the substantially spherical inorganic particles is 10 to 200 µm.   The wear resistant sheet member according to any one of claims 1 to 8, wherein the substantially spherical inorganic particles exclude glass particles.