Method of fabricating nano-silver paste having high bonding strength

    公开(公告)号:US09902862B2

    公开(公告)日:2018-02-27

    申请号:US15203029

    申请日:2016-07-06

    CPC classification number: C09D5/24 C09D7/48 H01B1/22

    Abstract: A method is provided to make a nano-silver paste. An organic acid is used as a protective agent. Silver nitrate is used as a source of silver ions to reduce silver nanoparticles on a surface protected by the organic acid. The particle size of the silver nanoparticle is 45 nanometers. In the other hand, a silver precursor of organic metal is synthesized. The organic metal is cracked at 200 celsius degrees (° C.) to fill pores left during sintering. After mixing the silver nanoparticle, the silver precursor and the solvent, the nano-silver paste is obtained. After being heated at 250° C. for 30 minutes, the nano-silver paste has a resistance of (3.09±0.61)×10−5 Ω·cm. By being heated at 250° C. and applied with a pressure of 10 MPa to be hot-pressed for 30 minutes for joining copper to copper, the nano-silver paste obtains a bonding strength reaching 36 MPa.

    COATING METHOD OF REFLECTIVE FILM
    144.
    发明申请

    公开(公告)号:US20180029073A1

    公开(公告)日:2018-02-01

    申请号:US15485624

    申请日:2017-04-12

    Inventor: Ya-Ling CHI

    CPC classification number: B05D7/56 B05D1/02 B05D1/286 B05D5/06 G02B5/128 G02B5/13

    Abstract: A coating method of reflective film is first to prepare a glass beads film and then select a color to be coated. The color is composed of plural primary colors in fixed ratio, making the color have a standard ratio, which is obtainable from an original database. Next, ratios of the primary colors are respectively adjusted to form a printing ratio according to color fastness, permeability and light barrier property of each primary color attached to the glass beads and then, each primary color is orderly spray coated on the glass beads film to form a coating layer with micro-printing technique in accordance with the printing ratio, thus completing manufacturing of a reflective film with high transmittance and high wide angle.

    PAINT APPLICATOR, KIT AND METHOD
    148.
    发明申请

    公开(公告)号:US20170361351A1

    公开(公告)日:2017-12-21

    申请号:US15695353

    申请日:2017-09-05

    Inventor: Deborah WIENER

    Abstract: A paint applicator, kit and methodology for using the same is disclosed. For example, a paint applicator that allows a user to load a desired amount of paint, such as a water based or other low VOC paint, into the paint applicator and an advancement mechanism that dispenses paint at a rate controllable by the user is disclosed. The advancement mechanism can include a system that translates a rotational force applied to an end cap of the applicator into a linear force that advances a piston which in turn applies paint to an applicator portion. The paint applicator may be reusable or may include a ratchet system that allows for only one time use. The methodology and kit can incorporate a syringe for loading paint into the paint applicator, thus reducing the loss of paint through spilling.

    ELECTRICAL STEEL SHEET
    150.
    发明申请

    公开(公告)号:US20170341107A1

    公开(公告)日:2017-11-30

    申请号:US15536013

    申请日:2015-12-21

    Abstract: An electrical steel sheet (1) includes a base material (2) of electrical steel, and an insulating film (3) formed on a surface of the base material (2), the insulating film (3) containing a polyvalent metal phosphate and Fe. A maximum value of a parameter Q expressed by “Q=CFe—O/CP” is equal to or less than 1.3 times an average value of the parameter Q in a region from a first depth from a surface of the insulating film to a second depth, CFe—O denoting a proportion (atom %) of Fe bonded to O relative to all elements, and CP denoting a proportion (atom %) of P relative to all elements. The first depth is 20 nm from the surface, and the second depth is a depth where the proportion of P is equal to a proportion of metal Fe.

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