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CN-118560859-B - Rust-proof film and packaging method of small-size ceramic copper-clad carrier plate

CN118560859BCN 118560859 BCN118560859 BCN 118560859BCN-118560859-B

Abstract

The invention relates to the field of copper-clad plate packaging, and particularly discloses a packaging method of a small-size ceramic copper-clad carrier, wherein an antirust film is coated on the outer side of the small-size ceramic copper-clad carrier, the antirust film sequentially comprises a substrate layer, a functional layer and a substrate layer from top to bottom, the substrate layer comprises linear polyethylene, modified polyethylene and metallocene polyethylene, the functional layer comprises the modified polyethylene, the linear polyethylene, the metallocene polyethylene and a corrosion inhibitor, the corrosion inhibitor is prepared by the steps of mixing morpholine, ethanol and benzotriazole uniformly, adding formaldehyde, stirring, adding urea and polyaspartic acid, refluxing, heating, cooling, filtering, washing, drying and obtaining a corrosion inhibitor, and the modified polyethylene is prepared by the steps of taking hydroxylated polyethylene, 2-hydroxy-2- [ (1-oxo-2-propenyl) amino ] acetic acid, sodium alginate and water, adding sulfuric acid to pH 3-4, heating for reaction, removing solvent and drying.

Inventors

  • LI YAN
  • WANG HONGXIA
  • YANG GUODONG
  • ZHAO CHENGLONG
  • MA JINGWEI

Assignees

  • 江苏富乐华半导体科技股份有限公司

Dates

Publication Date
20260508
Application Date
20240611

Claims (8)

  1. 1. The antirust film is characterized by comprising a 5-8 mu m substrate layer, a 35-40 mu m functional layer and a 5-8 mu m substrate layer from top to bottom, wherein the substrate layer comprises linear polyethylene, modified polyethylene and metallocene polyethylene; The preparation method of the corrosion inhibitor comprises the following steps of taking morpholine, ethanol and benzotriazole, uniformly mixing, adding formaldehyde, stirring, adding urea and polyaspartic acid, carrying out reflux heating, cooling, filtering, washing, drying and obtaining the corrosion inhibitor; the preparation method of the modified polyethylene comprises the following steps of taking hydroxylated polyethylene, 2-hydroxy-2- [ (1-oxo-2-propenyl) amino ] acetic acid, sodium alginate and water, adding sulfuric acid to the pH value of 3-4, heating for reaction, removing a solvent and drying to obtain the modified polyethylene.
  2. 2. The antirust film according to claim 1, wherein the substrate layer comprises (2-3) of (1-2) of linear polyethylene, modified polyethylene and metallocene polyethylene in a mass ratio, and the functional layer comprises (3-4) of (1-2) of (3-4) of modified polyethylene, linear polyethylene, metallocene polyethylene and a corrosion inhibitor in a mass ratio of 5.
  3. 3. The antirust film according to claim 1, wherein the anticorrosive agent comprises, by mass, 40-50 parts of morpholine, 100-120 parts of ethanol, 20-30 parts of benzotriazole, 60-80 parts of formaldehyde, 20-30 parts of urea and 10-20 parts of polyaspartic acid.
  4. 4. The antirust film according to claim 1, wherein the modified polyethylene comprises, by mass, 15-20 parts of hydroxylated polyethylene, 1-2 parts of 2-hydroxy-2- [ (1-oxo-2-propenyl) amino ] acetic acid, 2-4 parts of sodium alginate and 200-250 parts of water.
  5. 5. The antirust film according to claim 1, wherein the preparation of the hydroxylated polyethylene comprises the following steps of taking hydroxyl-terminated polybutadiene, a hydrogenation catalyst, heating in an argon atmosphere, introducing hydrogen, maintaining the pressure at 1-2 MPa, reacting for 30-40 h, cooling, precipitating, separating, purifying and drying to obtain the hydroxylated polyethylene.
  6. 6. The antirust film according to claim 5, wherein the hydroxylated polyethylene comprises 3-5 parts by weight of hydroxyl-terminated polybutadiene and a hydrogenation catalyst accounting for 0.05-0.1% by weight of the hydroxyl-terminated polybutadiene.
  7. 7. The antirust film according to claim 1, wherein three layers of the antirust film are extruded by adopting multilayer coextrusion equipment, and the extrusion temperature is 180-200 ℃.
  8. 8. A packaging method of a small-size ceramic copper-clad support plate is characterized by comprising the following steps of: S1, cutting an antirust film into a proper package size, putting a plurality of small-size ceramic copper-clad carrier plates into the package size, tidily arranging the ceramic copper-clad carrier plates, packaging the ceramic copper-clad carrier plates, and fixing the antirust film by using an adhesive tape; S2, filling the product obtained in the S1 into a plastic box, putting a desiccant and foam in gaps at two sides of the plastic box, filling the plastic box until the product obtained in the S1 is ensured not to shake in the plastic box, putting a humidity card, laying foam at the uppermost part, covering a plastic box cover, and fixing the plastic box cover around the plastic box cover for 3 weeks by using an adhesive tape; and S3, filling the product obtained in the step S2 into an aluminum foil bag, vacuumizing, sealing, checking, winding an air bubble bag on the outer layer, fixing by using an adhesive tape, boxing, sealing and packaging.

Description

Rust-proof film and packaging method of small-size ceramic copper-clad carrier plate Technical Field The invention relates to the field of copper-clad plate packaging, and particularly discloses a rust-proof film and a packaging method of a small-size ceramic copper-clad carrier plate. Background Along with the continuous rising of the market demand of power semiconductors, the demand of ceramic copper-clad carrier boards with various sizes is increased, and according to the difference of shipment modes, the ceramic copper-clad carrier boards are generally divided into three types of mother board delivery, small-size delivery and Tray, copper-clad ceramic carrier boards used in the fields of power electronics, environmental protection, white household appliances and the like are delivered in a large number of small-size mode, so that a production enterprise needs to have a special packaging method capable of ensuring that products are not oxidized, scratched and collided in the transportation and storage processes, and only then the products before use by customers and the products when delivered by manufacturers are completely consistent can be ensured, otherwise, because of the subsequent transportation damage problem, storage failure problem and other series of problems caused by packaging problems, additional cost is increased, difficult recovery loss is caused, and more importantly, the reputation of the product is lost. Therefore, the research of the rust-proof film with good rust-proof capability and good mechanical property for packaging the small-size ceramic copper-clad carrier plate has important significance. Disclosure of Invention The invention aims to provide an anti-rust film and a packaging method of a small-size ceramic copper-clad carrier plate, so as to solve the problems in the prior art. In order to solve the technical problems, the invention provides the following technical scheme: the antirust film comprises a 5-8 mu m substrate layer, a 35-40 mu m functional layer and a 5-8 mu m substrate layer from top to bottom, wherein the substrate layer comprises linear polyethylene, modified polyethylene and metallocene polyethylene, and the functional layer comprises modified polyethylene, linear polyethylene, metallocene polyethylene and a corrosion inhibitor; The preparation method of the corrosion inhibitor comprises the following steps of taking morpholine, ethanol and benzotriazole, uniformly mixing, adding formaldehyde, stirring, adding urea and polyaspartic acid, carrying out reflux heating, cooling, filtering, washing, drying and obtaining the corrosion inhibitor; the preparation method of the modified polyethylene comprises the following steps of taking hydroxylated polyethylene, 2-hydroxy-2- [ (1-oxo-2-propenyl) amino ] acetic acid, sodium alginate and water, adding sulfuric acid to the pH value of 3-4, heating for reaction, removing a solvent and drying to obtain the modified polyethylene. More preferably, the substrate layer comprises (2-3) of (1-2) of linear polyethylene, modified polyethylene and metallocene polyethylene, and the functional layer comprises (5-4) of (1-2) of (3-4) of modified polyethylene, linear polyethylene, metallocene polyethylene and corrosion inhibitor. More optimally, the corrosion inhibitor comprises the following raw materials, by mass, 40-50 parts of morpholine, 100-120 parts of ethanol, 20-30 parts of benzotriazole, 60-80 parts of formaldehyde, 20-30 parts of urea and 10-20 parts of polyaspartic acid. More optimally, the modified polyethylene comprises the following raw materials, by mass, 15-20 parts of hydroxylated polyethylene, 1-2 parts of 2-hydroxy-2- [ (1-oxo-2-propenyl) amino ] acetic acid, 2-4 parts of sodium alginate and 200-250 parts of water. More optimally, the preparation method of the hydroxylated polyethylene comprises the following steps of taking hydroxyl-terminated polybutadiene, a hydrogenation catalyst, heating in an argon atmosphere, introducing hydrogen, keeping the pressure at 1-2 MPa, reacting for 30-40 h, cooling, precipitating, separating, purifying and drying to obtain the hydroxylated polyethylene. More optimally, the hydroxylated polyethylene comprises the following raw materials, by mass, 3-5 parts of hydroxyl-terminated polybutadiene and a hydrogenation catalyst accounting for 0.05-0.1% of the mass of the hydroxyl-terminated polybutadiene. More optimally, three layers of the antirust film are extruded by adopting multilayer coextrusion equipment, and the extrusion temperature is 180-200 ℃. The packaging method of the small-size ceramic copper-clad support plate uses the antirust film and comprises the following steps: S1, cutting an antirust film into a proper package size, putting a plurality of small-size ceramic copper-clad carrier plates into the package size, tidily arranging the ceramic copper-clad carrier plates, packaging the ceramic copper-clad carrier plates, and fixing the antirust film by using an adhesive tap