Abstract:
본발명은내화학성과내열성이우수하고표면에디스크-인-포어구조의독특한미세패턴이형성된폴리스티렌박막을제조하는방법에관한것으로, 보다상세하게는 A) 기판상에폴리스티렌박막을형성하는단계; B) 용매-비용매를사용한개선된상전이법에의해상기폴리스티렌박막상에미세기공을갖는패턴을형성하는단계; C) 상기패턴이형성된폴리스티렌박막에자외선을조사하여가교를형성시키는단계; 및 D) 상기가교가형성된폴리스티렌박막을열처리하는단계;를포함하는것을특징으로하는디스크-인-포어미세패턴이형성된폴리스티렌박막의제조방법에관한것이다.
Abstract:
PURPOSE: A manufacturing method of micropolymer patterns is provided to use a solvent and nonsolvent system, thereby manufacturing micropatterns on various substrates in short time. CONSTITUTION: A manufacturing method of micropolymer patterns on a substrate comprises a step of manufacturing a polymer solution by dissolving a polymer resin in a solvent; a step of coating the substrate with the polymer solution and drying the polymer solution; a step of manufacturing a mixed solvent by diluting the solvent by nonsolvent; and a step of treating the polymer solution-coated substrate, with the mixed solvent and drying the substrate. The volume ratio of the solvent and nonsolvent is 1-100:1-100.
Abstract:
PURPOSE: An organic solderability preservative is provided to improve the surface properties of a solder pad and interface properties, reduce the cost of a monomer, reduce the generation of a nasty smell, facilitate the storage of a complete product. CONSTITUTION: An organic solderability preservative comprises a copolymer of 4-vinyl pyridine and methylmethacrylate. The copolymer of 4-vinyl pyridine and methylmethacrylate is in the chemical formula 1. In the chemical formula 1, each n or m is 1-300. A manufacturing method of a microelectronic package substrate comprises: a step spreading the organic solderability preservative to a solder pad formed on the substrate; a step mounting a semiconductor devices on one side of the substrate; a step conducting an EMC-molding process on one side in which the semiconductor device is mounted; and a step eliminating the spread organic solderability preservative by dissolving in solvent.
Abstract:
PURPOSE: A method for manufacturing saccharide materials using marine algae is provided to produce bio fuel. CONSTITUTION: A method for manufacturing saccharide material comprises: a step of treating marine algae with an extraction solvent containing acidic drug for 1-600 minutes as acid treatment; a step of treating by plasma for 1-300 minutes. A method for manufacturing bio-fuel comprises a step of fermenting the saccharide materials using a microorganism.