The present invention provides an emulsion composition for a vibration damper, which has heating and drying properties high enough to form an excellent coating film which can exhibit excellent damping without swelling during drying by heating, and an emulsion composition for a vibration damper, which can exhibit basic performances demanded in vibration dampers, in particular, markedly superior anti-sagging even under the condition of high humidity or a thick film where the coating film may sag in conventional technologies, and thus can be useful in vibration dampers of various structures. The emulsion composition for a vibration damper includes an emulsion obtainable by emulsion polymerization of monomer components, the emulsion composition containing 0.5 to 20% by mass of a film-forming agent with a weight average molecular weight of 100 to 20000 in 100% by mass of the emulsion composition.

Emulsion composition for vibration damping material

Provided is a resin emulsion for a damping paint, the resin emulsion being capable of contributing to formation of a coating film to which swelling and peeling are unlikely to occur and having favorable mechanical stability. The resin emulsion for a damping paint contains a (meth)acrylic resin particle including a particle obtained by polymerizing a monomer component containing 50% by mass or more of a (meth)acrylic acid ester and an adsorbed protective layer obtained by allowing a polycarboxylic acid-based polymer compound having a structural unit derived from a carboxylic acid, or a salt or anhydride thereof to be adsorbed onto the surface of the particle. The (meth)acrylic resin particle has a ratio of an average particle diameter DA by means of a laser diffraction/scattering method to an average particle diameter DB by means of a dynamic light scattering method, DA/DB, of less than 1.

Resin emulsion for damping paint, damping paint, and method for producing resin emulsion for damping paint

The invention discloses a preparation method of a low-temperature-domain high-performance water-soluble damping coating and a product The preparation method comprises the steps that 1, 30-40 parts ofacrylic resin blending emulsion, 10-20 parts of deionized water, 03-08 part of defoaming agent, 03-08 part of dispersing agent, 10-20 parts of 200-1000 mesh of calcium carbonate powder, 10-30 parts of 100-600 mesh of sericite powder, 04-08 part of thickening agent and 01-03 part of low-temperature damping performance modifying additive, wherein the acrylic resin blending emulsion is prepared by blending four acrylic resin emulsions with the glass transition temperatures of -40 degrees, -20 degrees, 0 degree and 20 degrees respectively, wherein the weight of each acrylic resin emulsionis 3-10 parts by weight; 2, the acrylic resin blending emulsion, the deionized water, the defoaming agent, the dispersing agent and the low-temperature damping performance modifying additive are putin a stirring container, and stirring is performed at the rotation speed of 500 rpm for 5 minutes; 3, the calcium carbonate powder and the sericite powder are added into the stirring container, and stirring is performed at the rotation speed of 1000 rpm for 10 minutes; 4, the thickening agent is added into the stirring container, and stirring is performed at the rotation speed of 1500 rpm for 10 minutes; 5, the low-temperature-domain high-performance water-soluble damping coating is obtained

Preparation method of low-temperature-domain high-performance water-soluble damping coating and product

Provided is a vibration damping composite capable of providing a vibration damping material, at low cost, that exhibits a high vibration damping property in a wide temperature range and has excellent appearance. The present invention relates to a resin composition for vibration damping materials which contains a lignin and/or a lignin derivative. The present invention also relates to a vibration damping composite containing the resin composition for vibration damping materials and an inorganic pigment. The present invention also relates to a vibration damping material obtainable from the vibration damping composite.

Resin composition for damping material

PROBLEM TO BE SOLVED: To provide a damping paint composition capable of improving both a loss elastic modulus and a storage elastic modulus.SOLUTION: A damping paint composition includes at least an emulsion of polymer particles and an organic low molecule. In the composition, the inclination of a load displacement curve of crystals of the organic low molecule, which is measured using a nanoindenter, is 85-300 μN/100 nm.

Damping paint composition

PROBLEM TO BE SOLVED: To provide an aqueous vibration-damping coating composition exhibiting high-degree vibration-damping performances. SOLUTION: The composition includes at least a matrix resin and a filler, where the filler includes an inorganic filler having a high aspect ratio, an inorganic filler having a low aspect ratio and an organic filler. The inorganic filler having a high aspect ratio has a weight-average aspect ratio of 10-200 and the content thereof based on all of the filler components is 35-70 wt.%. The inorganic filler having a low aspect ratio has a weight-average aspect ratio of 1-5 and the content thereof based on all of the filler components is 10-30 wt.%. The organic filler is an organic material which is in a crystalline state at a service temperature, has a melting point of 40-200°C and the content thereof based on all of the filler components is 3-40 wt.%. COPYRIGHT: (C)2010,JPO&INPIT

Aqueous vibration-damping coating composition

PROBLEM TO BE SOLVED: To provide a coating film formation method of a vibration damping material which forms an application type coating thickness for obtaining the vibration damping action under a low temperature and heating drying conditions in a short time. SOLUTION: The coating film formation method of the application type vibration damping material comprises: a step of applying the application type vibration damping material that is an emulsion coating having a coating solid content of 77.0 wt.% or more, a pigment volume concentration of 40-50 vol% and a volume concentration of the large particle size pigment with a particle size of 40-100 μm is 2-14 vol% on an arbitrary parts with a coating thickness of 1-5 mm; and a step of conducting the energy-saving drying by heating for 25 minutes or less at a temperature of 140°C or less to make the coating residual moisture content demanded for the vibration damping coating film to 3.0 wt.% or less. COPYRIGHT: (C)2010,JPO&INPIT

昇士木村

Papers

Aqueous vibration-damping coating composition

Coating film formation method of application type vibration damping material

昇士 木村

Papers

Aqueous vibration-damping coating composition

Coating film formation method of application type vibration damping material

昇士木村