Abstract: The particle measurement device includes: an acquiring unit configured to acquire pad surface shape data indicating a surface shape of an electrode pad including a probe needle mark where a probe needle has contacted; a roughness calculating unit configured to calculate volume of a recessed portion recessed from a pad reference surface and volume of a protruding portion protruding from the pad reference surface based on the pad surface shape data; and a particle quantity calculating unit configured to calculate a particle quantity from a volume difference between the volume of the recessed portion and the volume of the protruding portion.

Abstract: A coating agent for oil seal comprising 10 to 160 parts by weight of a filler having a particle size of 0.5 to 30 ?m based on 100 parts by weight of isocyanate group-containing 1,2-polybutadiene and being prepared as an organic solvent solution, wherein a contact angle between a substrate surface coated with the coating agent and engine oil is less than 35°. The coating agent can improve wettability with oil and reduce dynamic friction coefficient in oil, while increasing the roughness of the coating surface. Thus, low torque characteristics can be achieved, while maintaining excellent seal performance inherent in oil seal.

Abstract: A cleaning blade 1 includes an elastic body 11 that is a molded body of a rubber base material, and which has at least a surface treatment layer 12 in a portion of the elastic body 11, the portion coming into contact with an object to be contacted. The surface treatment layer 12 is formed by impregnating a surface portion of the elastic body 11 with a surface treatment liquid, which contains an isocyanate compound and an organic solvent, and curing the surface treatment liquid; the surface treatment layer 12 has an elastic modulus of 95 MPa or less; the elastic body 11 has an elastic modulus of from 20 MPa to 60 MPa (inclusive); and the difference between the elastic modulus of the surface treatment layer 12 and the elastic modulus of the elastic body 11 is 1 MPa or more.

Abstract: Provided is a cleaning blade having an elastic body that is a molding of a rubber substrate and having at least a surface-treatment layer at a position that contacts a contact-receiving site on the elastic body. The surface-treatment layer contains a cured product from an isocyanate group reaction product of a difunctional isocyanate compound with a difunctional polyol and a trifunctional polyol wherein the molar ratio of the difunctional polyol to the trifunctional polyol (difunctional/trifunctional) is 50/50 to 95/5. The cured product reacts via the isocyanate group with the polymer forming the elastic body, and the surface-treatment layer has a thickness of at least 10 ?m and not more than 100 ?m.

Abstract: A surface-treating agent for vulcanized rubber, comprising, based on 100 parts by weight, as solid matters, of isocyanate group-containing 1,2-polybutadiene, an organic solvent solution containing 10 to 160 parts by weight of fluororesin particles and 2.5 to 20 parts by weight of a perfluoroalkyl group-containing oligomer-based, fluorine-containing surfactant as a dispersant. The surface-treating agent for vulcanized rubber improves the solution stability of the organic solvent solution, improves the further hardness of the entire coating film formed from the surface-treating agent, abrasion resistance, and product torque evaluation, and is effectively used as, for example, a coating agent for seal lip parts of oil seals.

Abstract: A cleaning blade 1 includes an elastic body 11 that is a molded body of a rubber base material, and which has at least a surface treatment layer 12 in a portion of the elastic body 11, the portion coming into contact with an object to be contacted. The surface treatment layer 12 is formed by impregnating a surface portion of the elastic body 11 with a surface treatment liquid, which contains an isocyanate compound and an organic solvent, and curing the surface treatment liquid; the surface treatment layer 12 has an elastic modulus of 95 MPa or less; the elastic body 11 has an elastic modulus of from 20 MPa to 60 MPa (inclusive); and the difference between the elastic modulus of the surface treatment layer 12 and the elastic modulus of the elastic body 11 is 1 MPa or more.

Abstract: Provided is a cleaning blade having an elastic body that is a molding of a rubber substrate and having at least a surface-treatment layer at a position that contacts a contact-receiving site on the elastic body. The surface-treatment layer contains a cured product from an isocyanate group reaction product of a difunctional isocyanate compound with a difunctional polyol and a trifunctional polyol wherein the molar ratio of the difunctional polyol to the trifunctional polyol (difunctional/trifunctional) is 50/50 to 95/5. The cured product reacts via the isocyanate group with the polymer forming the elastic body, and the surface-treatment layer has a thickness of at least 10 ?m and not more than 100 ?m.

Abstract: A surface-treating agent for vulcanized rubber, comprising 10 to 160 parts by weight of a wax having a softening point of 40 to 160° C. and 10 to 160 parts by weight of fluororesin particles based on 100 parts by weight of the total amount of isocyanate group-containing 1,2-polybutadiene and an OH group-containing fluororesin composition that has the following formulation: a copolymer [I] of (A) a perfluoroalkylalkyl (meth)acrylate and (B) a hydroxyl group-containing (meth)acrylate, a polymer [II] of an acrylic acid alkyl ester, a polymer [III] of a fluorinated olefin, and a curing agent [IV]; wherein the weight ratio of the isocyanate group-containing 1,2-polybutadiene and the OH group-containing fluororesin composition is 50:50 to 95:5.

Abstract: A cleaning blade has an elastic body formed of a urethane elastomer, and a treated surface layer formed at least at a portion which comes into contact with a contact target of the elastic body. The treated surface layer is formed through impregnating a surface portion of the elastic body with a surface treatment liquid containing a bifunctional isocyanate compound, at least one polyol, and an organic solvent; or a surface treatment liquid containing an isocyanate group-containing compound having an isocyanate group at an end thereof, which compound is a reaction product of the bifunctional isocyanate compound with the at least one polyol, and an organic solvent, and curing the surface treatment liquid. The difference between the nitrogen concentration at the surface and the nitrogen concentration in the elastic body at a depth of 0.5 mm from the surface of the treated surface layer is 0.02 to 0.15 mass %.

Abstract: A coating agent for oil seal comprising 10 to 160 parts by weight of a filler having a particle size of 0.5 to 30 ?m based on 100 parts by weight of isocyanate group-containing 1,2-polybutadiene and being prepared as an organic solvent solution, wherein a contact angle between a substrate surface coated with the coating agent and engine oil is less than 35°. The coating agent can improve wettability with oil and reduce dynamic friction coefficient in oil, while increasing the roughness of the coating surface. Thus, low torque characteristics can be achieved, while maintaining excellent seal performance inherent in oil seal.

Abstract: A cleaning blade (1) having an elastic body (11) molded from a rubber base material, and having at least a surface treatment layer (12) on the area of the elastic body (11) that is brought into contact with a body to be contacted, wherein the surface treatment layer (12) is formed by impregnating the surface layer portion of the elastic body (11) with a surface treatment liquid containing an isocyanate compound and an organic solvent and hardening the liquid. The elasticity modulus of the surface treatment layer (12) is 40 MPa or less, the elasticity modulus of the elastic body (11) is 3-20 MPa, and the difference between the elasticity modulus of the surface treatment layer (12) and the elasticity modulus of the elastic body (11) is 1 MPa or more.

Abstract: A surface-treating agent for vulcanized rubber, comprising 10 to 160 parts by weight of a wax having a softening point of 40 to 160° C. and 10 to 160 parts by weight of fluororesin particles based on 100 parts by weight of the total amount of isocyanate group-containing 1,2-polybutadiene and an OH group-containing fluororesin composition that has the following formulation: a copolymer [I] of (A) a perfluoroalkylalkyl (meth)acrylate and (B) a hydroxyl group-containing (meth)acrylate, a polymer [II] of an acrylic acid alkyl ester, a polymer [III] of a fluorinated olefin, and a curing agent [IV]; wherein the weight ratio of the isocyanate group-containing 1,2-polybutadiene and the OH group-containing fluororesin composition is 50:50 to 95:5.

Abstract: A surface-treating agent for vulcanized rubber, comprising, based on 100 parts by weight, as solid matters, of isocyanate group-containing 1,2-polybutadiene, an organic solvent solution containing 10 to 160 parts by weight of fluororesin particles and 2.5 to 20 parts by weight of a perfluoroalkyl group-containing oligomer-based, fluorine-containing surfactant as a dispersant. The surface-treating agent for vulcanized rubber improves the solution stability of the organic solvent solution, improves the further hardness of the entire coating film formed from the surface-treating agent, abrasion resistance, and product torque evaluation, and is effectively used as, for example, a coating agent for seal lip parts of oil seals.

Abstract: A cleaning blade has an elastic body formed of a urethane elastomer, and a treated surface layer formed at least at a portion which comes into contact with a contact target of the elastic body. The treated surface layer is formed through impregnating a surface portion of the elastic body with a surface treatment liquid containing a bifunctional isocyanate compound, at least one polyol, and an organic solvent; or a surface treatment liquid containing an isocyanate group-containing compound having an isocyanate group at an end thereof, which compound is a reaction product of the bifunctional isocyanate compound with the at least one polyol, and an organic solvent, and curing the surface treatment liquid. The difference between the nitrogen concentration at the surface and the nitrogen concentration in the elastic body at a depth of 0.5 mm from the surface of the treated surface layer is 0.02 to 0.15 mass %.

Abstract: In a cleaning blade 1 having an elastic body 11, which is a molded article of a rubber material, the elastic body 11 having at least a surface-treated layer 12 formed at least on an abutting part with an object of contact, the surface-treated layer 12 is formed by impregnating the elastic body 11 with a surface treatment liquid which contains a bi-functional isocyanate compound, a tri-functional polyol, and an organic solvent, or with a surface treatment liquid which contains an organic solvent and an isocyanate-group-containing compound having an isocyanate group yielded through reaction between the bi-functional isocyanate compound and the tri-functional polyol, followed by curing; the ratio between an isocyanate group contained in the bi-functional isocyanate compound and a hydroxyl group contained in the tri-functional polyol (NCO group/OH group) is 1.0 to 1.5; and the surface-treated layer has a thickness of 10 ?m to 100 ?m.

Abstract: A cleaning blade (1) having an elastic body (11) molded from a rubber base material, and having at least a surface treatment layer (12) on the area of the elastic body (11) that is brought into contact with a body to be contacted, wherein the surface treatment layer (12) is formed by impregnating the surface layer portion of the elastic body (11) with a surface treatment liquid containing an isocyanate compound and an organic solvent and hardening the liquid. The elasticity modulus of the surface treatment layer (12) is 40 MPa or less, the elasticity modulus of the elastic body (11) is 3-20 MPa, and the difference between the elasticity modulus of the surface treatment layer (12) and the elasticity modulus of the elastic body (11) is 1 MPa or more.

Abstract: In a cleaning blade 1 having an elastic body 11, which is a molded article of a rubber material, the elastic body 11 having at least a surface-treated layer 12 formed at least on an abutting part with an object of contact, the surface-treated layer 12 is formed by impregnating the elastic body 11 with a surface treatment liquid which contains a bi-functional isocyanate compound, a tri-functional polyol, and an organic solvent, or with a surface treatment liquid which contains an organic solvent and an isocyanate-group-containing compound having an isocyanate group yielded through reaction between the bi-functional isocyanate compound and the tri-functional polyol, followed by curing; the ratio between an isocyanate group contained in the bi-functional isocyanate compound and a hydroxyl group contained in the tri-functional polyol (NCO group/OH group) is 1.0 to 1.5; and the surface-treated layer has a thickness of 10 ?m to 100 ?m.