• Title, Summary, Keyword: Pressure-sensitive adhesion

Search Result 77, Processing Time 0.034 seconds

Pressure Sensitive Adhesion Performances of SIS/SBS based UV-curable Pressure Sensitive Adhesives using Thiol-ene Reaction (Thiol-ene 반응을 이용한 UV경화형 SIS/SBS계 점착제의 점착물성)

  • Lim, Dong-Hyuk;Do, Hyun-Sung;Kim, Hyun-Joong;Yoon, Goan-Hee;Bang, Jung-Suk
    • Journal of Adhesion and Interface
    • /
    • v.6 no.3
    • /
    • pp.19-25
    • /
    • 2005
  • Synthetic rubber based pressure-sensitive adhesives (PSAs) usually containing SIS or SBS block copolymer, tackifier, plasticizer, and other additives are now widely used on various applications. As these PSAs are physically crosslinked and can be applied without the use of solvent, they are thermally processable and environmentally friendly. However these PSAs cannot be used in high temperature applications and in applications where solvent and chemical resistance properties are required. We developed the PSA adding UV curable system, such as thiol-ene system, to increase adhesion properties at elevated temperature. The adhesion properties such as probe tack, peel strength, shear adhesion failure temperature (SAFT) were evaluated. The probe tack test was conducted with varying probe materials and coating thickness of PSAs. Using the contact angle, the surface property of the cured PSAs was also observed.

  • PDF

Adhesion Properties of UV-curable Pressure Sensitive Adhesives for Dicing Tape (다이싱 테이프용 자외선 경화형 점착제의 접착 물성)

  • Do, Hyun-Sung;Kim, Sung-Eun;Kim, Hyun-Joong
    • Journal of Adhesion and Interface
    • /
    • v.5 no.4
    • /
    • pp.1-8
    • /
    • 2004
  • UV-curable pressure sensitive adhesives were prepared by blending acrylic copolymer, copolymerized with butyl acrylate, acrylic acid and methyl methacrylate by solution polymerization, and trimethylolpropane triacrylate. The PSAs were evaluated by adhesion strength with varying UV dose, and also glass transition temperature ($T_g$) of PSAs were measured. When exposed on UV irradiation, the PSAs showed the decreased adhesion strength and increased $T_g$. And following UV irradiation, the PSAs did not leave any residue on wafer after peel off PSA.

  • PDF

Construction and adhesion performance of biomass tetrahydro-geraniol-based sustainable/transparent pressure sensitive adhesives

  • Baek, Seung-Suk;Jang, Su-Hee;Hwang, Seok-Ho
    • Journal of Industrial and Engineering Chemistry
    • /
    • v.53
    • /
    • pp.429-434
    • /
    • 2017
  • Using the tetrahydro-geraniol acrylate (TGA) synthesized from biomass tetrahydro-geraniol, UV-cured transparent acrylic pressure sensitive adhesives (PSAs) composed of semi-interpenetrating networks were successfully fabricated. The utility for optically clear adhesive on adhesion performances according to various concentrations of TGA in the acrylic PSAs were investigated. After characterizing the photo-polymerized PSA syrups, the optical properties for the acrylic PSA films were examined using UV-vis spectroscopy, a color-difference meter, and a haze meter. The acrylic PSAs exhibited high transparency and stable weather-ability under reliability testing (85/85 test). With increasing TGA concentration in the acrylic PSAs, adhesion properties such as the $180^{\circ}$ peel strength,shear holding power, and probe tack had decreased.

The Effects of Functional Monomers on the Synthesis andPhysical Properties of Solution Type Quaternary Polymer Acrylic Pressure-Sensitive Adhesives (관능성 단량체 종류에 따른 4원 용액형 아크릴계 점착제의 합성과 물성에 관한 연구)

  • Kim, Nam-Seok;Kim, Sung-Hoon
    • Journal of the Korean Applied Science and Technology
    • /
    • v.25 no.4
    • /
    • pp.525-532
    • /
    • 2008
  • To prepare a solution type acrylic pressure-sensitive adhesive, quarter polymers were synthesized from butyl acrylate(BA), 2-ethylhexylacrylate(2-EHA) as a base monomer, methyl methacrylate(MMA) as a comonomer, each of methacrylic acid(MAA), acrylic acid(AA) as a functional monomer. Acrylic solution type pressure-sensitive adhesives(PSA's) of isocyanate derivative crosslinking PSA's were prepared by crosslinking of BEMM, BEMA with toluene-2,4-diisocyanate. The structure of adhesive was identified by FT-IR. The viscosity was measured by using Brookfield DV-III and molecular weight was measured by using gel permeation chromatography. The physical properties of polyethylene film coated with BEMMT, BEMAT were measured as a function of the concentration. As the result, BEMMT(0.6, 0.8), BEMAT(0.6) showed peel adhesion of $160{\sim}180\;g_f$/25 mm width and shear adhesion of more than 24 hours, and tackiness of $4/32{\sim}6/32$ which was relevant to commercial usage.

The Study on the Pressure-Sensitive Adhesion Property of Waste FKM Powder and SBS Modified Asphalt (폐불소고무 분말과 SBS로 개질된 아스팔트의 점착 특성에 관한 연구)

  • Chung, Kyung-Ho;Kang, Min-Kyu;Han, Kyung-A
    • Elastomers and Composites
    • /
    • v.44 no.3
    • /
    • pp.282-289
    • /
    • 2009
  • The pressure-sensitive adhesive(PSA) tapes are widely used as floor-sealing material in Korean constructive industry. However, the general PSA tapes can not seal the apertures completely. This is one of main reasons to cause imperfect finishing. In order to solve the problems, the asphalts were modified by FKM powder and SBS in this study. The physical properties of modified asphalts were examined by measuring the softening point, viscosity, tensile strength and adhesion strength of FKM and SBS modified asphalt. The softening point of SBS modified asphalt was increased greatly due to the formation of network structure in asphalt. Also, the change of adhesion strength of SBS modified asphalt with temperature was not so great comparing to those of pure asphalt and FKM modified asphalt. The best results of pressure-sensitive adhesion could be obtained by the SBS(linear) modified asphalt containing 6 wt.% of linear type SBS.

Thermal Conductivity and Adhesion Properties of Thermally Conductive Pressure-Sensitive Adhesives

  • Kim, Jin-Kon;Kim, Jong-Won;Kim, Myung-Im;Song, Min-Seok
    • Macromolecular Research
    • /
    • v.14 no.5
    • /
    • pp.517-523
    • /
    • 2006
  • The effects of particle content, size and shape on the thermal conductivity (k) and adhesion properties of thermally conductive, pressure-sensitive adhesives (PSAs) were investigated. The matrix resins were thermally crosslinkable, 2-ethylhexyl acrylic polyol and ultraviolet (UV)-curable, random copolymer consisting of acrylic oligomer and various acrylates. We found that k increased with increasing diameter and particle aspect ratio, and was further enhanced due to the reduction of the interfacial thermal barrier when the coupling agent, which increases the adhesion between particles and the matrix resin, was used. On the other hand, adhesion properties such as peel strength and tack of the thermally crosslinkable resin decreased sharply with increasing particle content. However, for UV curable resin, increased particle addition inhibited the decrease in adhesion properties.

The Preparation and Adhesion Performances of Transparent Acrylic Pressure Sensitive Adhesives Containing Acrylamide Monomer for Optical Applications

  • Baek, Seung-Suk;Jang, Se-Jung;Hwang, Seok-Ho
    • Elastomers and Composites
    • /
    • v.51 no.3
    • /
    • pp.181-187
    • /
    • 2016
  • Transparent acrylic pressure sensitive adhesives (PSAs) were successfully prepared by photopolymerization with 2-ethylhexyl acrylate (2-EHA) and 2-hydroxyethyl acrylate (2-HEA) as a default constituent and with isobornyl acrylate (IBOA) and N-(isobutoxymethyl)acrylamide (IBMA) as a variable constituent. The IBMA mole fraction effect in the acrylic PSAs was investigated on adhesion performances and the optical properties including 85/85 test as well as the characteristics (solid content, and molecular weight) of the PSA syrups were also investigated. Regardless increasing the IBMA mole fraction in the acrylic PSAs, the acrylic PSAs exhibited almost the same adhesion performance such as $180^{\circ}$ peel strength (~4.0 kg/25 mm) and probe tack (~0.27 kg). All the acrylic PSA samples also showed high transmittance (more than 91%), low haze (less than 1.0%) and low color-difference (less than 1.0) before and after 85/85 test.

Curing Behaviors of SEMI-IPN Structure UV-curable Pressure Sensitive Adhesive for Dicing Tape (Semi-IPN 구조를 갖는 다이싱 테이프용 자외선 경화형 점착제의 경화거동)

  • Do, Hyun-Sung;Kim, Hyun-Joong;Shim, Chang-Hoon
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
    • /
    • /
    • pp.127-128
    • /
    • 2005
  • UV-curable pressure sensitive adhesives were prepared by blending acrylic copolymer, copolymerized with butyl acrylate (BA), acrylic acid (AA) and vinyl acetate (VAc) by solution polymerization, triethyl amine (TEA) and trimethylolpropane triacrylate (TMPTA). The PSAs were evaluated by peel strength with varying contents of TMPTA and UV dose, and also glass transition temperature($T_g$) of PSAs were measured. When exposed on UV irradiation, the PSAs showed the decreased peel strength and increased $T_g$. And following UV irradiation, the PSAs did not leave any residue on wafer after peel off PSA.

  • PDF