Process for modifying surfaces of materials, and materials having surfaces modified thereby

• US 6,300,641 B1
• Filed: 09/09/1998
• Issued: 10/09/2001
• Est. Priority Date: 04/19/1996
• Status: Expired due to Term

• Current Assignee: Korea Advanced Institute of Science and Technology
• Original Assignee: Korea Advanced Institute of Science and Technology
• Inventors: Gam, Sik Sang, Choi, Won Kook, Han, Kyong Sop, Koh, Seok Keun, Jung, Hyung Jin
• Primary Examiner(s): Berman, Susan W.
• Application Number:
  US09/149,442
• Time in Patent Office: 1,126 Days
• Field of Search: 250/492.2, 250/492.21, 250/492.3, 427/525, 427/527, 427/528, 427/529, 427/533, 427/536, 427/539, 204/157.15
• US Class Current: 250/492.21
• CPC Class Codes: B29C 2035/0872 using ion-radiation, e.g. alpha-rays
• CPC Class Codes: B29C 2791/006 Using vacuum
• CPC Class Codes: B29C 59/16 by wave energy or particle radiation , e.g. infrared heating B29C59/007 takes precedence
• CPC Class Codes: C03C 17/23 Oxides C03C17/02 takes precedence
• CPC Class Codes: C03C 2217/211 SnO2
• CPC Class Codes: C03C 2217/215 In2O3
• CPC Class Codes: C03C 2217/23 Mixtures
• CPC Class Codes: C03C 2218/32 After-treatment
• CPC Class Codes: C03C 23/0055 by ion implantation
• CPC Class Codes: C03C 23/006 by plasma or corona discharge
• CPC Class Codes: C04B 35/10 based on aluminium oxide
• CPC Class Codes: C04B 35/48 based on zirconium or hafnium oxides, zirconates, zircon or hafnates
• CPC Class Codes: C04B 41/0027 Ion-implantation, ion-irradiation or ion-injection
• CPC Class Codes: C04B 41/0072 Heat treatment
• CPC Class Codes: C04B 41/009 characterised by the material treated
• CPC Class Codes: C04B 41/53 involving the removal of at least part of the materials of the treated article, e.g. etching, drying of hardened concrete C04B41/0036 - C04B41/0054 take precedence
• CPC Class Codes: C04B 41/80 of only ceramics
• CPC Class Codes: C08J 7/12 Chemical modification

Abstract

A process for modifying the surfaces of a polymer, ceramic, ITO or glass by irradiating energized ion particles onto the surfaces of the polymer, ceramic, ITO or glass, while blowing a reactive gas directly over the surface of the polymer, ceramic, ITO or glass under a vacuum condition, to decrease the wetting angle of the surface. The process can be widely used in the fields of polymers because it provides effects of increasing the spreading of aqueous dyestuffs, increasing adhesive strength with other materials and inhibition of light scattering by decreasing the wetting angle of the material surface.

Claims

1. A process for chemically reacting the surface of ceramic material, comprising irradiating a ceramic surface with 10¹⁴ to 5×

10¹⁷ ions/cm² of energized ion particles while contacting the ceramic surface with 1-8 ml/min of a reactive gas under a vacuum condition,

wherein the reactive gas chemically reacts with the surface of the ceramic.

2. The process of claim 1, wherein the reactive gas is selected from the group consisting of oxygen, nitrogen, hydrogen, ammonia, carbon monoxide and mixtures thereof.

3. The process of claim 1, wherein the energized ion particles are selected from the group consisting of ion particles of argon, oxygen, air, krypton and any mixtures thereof.

4. The process of claim 1, wherein the energy of the energized ion particles is 0.5 keV-2.5 keV.

5. A process for modifying the surface of Indium Tin Oxide (ITO) or glass, comprising irradiating 10¹⁴ to 5×

10¹⁷ ions/cm² of energized ion particles onto the ITO or glass surface while blowing a 1-8 ml/min of reactive gas directly onto the ITO or glass surface under a vacuum condition.

6. The process of claim 5, wherein the reactive gas is selected from the group consisting of oxygen, nitrogen, hydrogen, ammonia, carbon monoxide and mixtures thereof.

7. The process of claim 5, wherein the energized ion particles are selected from the group consisting of ion particles of argon, oxygen, air, krypton and any mixtures thereof.

8. The process of claim 5, wherein the energy of the energized ion particles is 0.5 keV-2.5 keV.

9. The process as claim 5, comprising irradiating energized ion particles onto a ITO surface while blowing a reactive gas directly onto the ITO surface under a vacuum condition.

10. A process as claimed in claim 5, comprising irradiating energized ion particles onto the glass surface while blowing a reactive gas directly onto the glass surface under a vacuum condition.