• Title/Summary/Keyword: hot melt adhesive

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Preparation and Their Properties of Hot-Melt Adhesive using Styrene Block Copolymer and Petroleum Resin (스타이렌 블록 공중합체(SBC)와 석유수지를 이용하여 제조한 핫멜트 접착제의 제조 및 특성)

  • Jeong, Booyoung;Cheon, Jungmi;Yoo, Chongsun;Chun, Jeahwan
    • Journal of Adhesion and Interface
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    • v.9 no.4
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    • pp.12-16
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    • 2008
  • Hot-melt adhesive was solid phase in room temperature as 100% solid contents. So it has advantage which attach to substrate with the low pressure heat, fast adhesion speed and environment friendly. In this study, We studied about the effect of a kind of SBS resin and petroleum resin as a tackifier resin and their ratio for hot-melt adhesive on properties. The styrene and $C_9$ resin contents in hot-melt adhesive was increased with increasing viscosity, tensile strength, peel strength and thermal resistance.

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Study on the Thermal Behavior and Adhesion Properties of Polyurethane Hot Melt Adhesive via Induction Heating (유도가열에 의한 폴리우레탄 핫멜트 접착제의 열적 거동 및 접착특성 연구)

  • Jeon, Ho Kyyon;Park, Hyun Ju;Lee, Ji Eun;Lee, Jonh Hwan;Oh, Sang Taek
    • Journal of Adhesion and Interface
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    • v.19 no.4
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    • pp.167-172
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    • 2018
  • In this study, a polyurethane hot melt adhesive was synthesized and metal particles sensitive to induction heating were added to produce an induction heating melt adhesive. The thermal behavior and adhesion characteristics of metal particles were investigated according to the kind, size and induction heating conditions. Among the various metal particles, induction heating efficiency was the best when nickel and iron were applied. Induction heating efficiency increased with decreasing metal particle size. In addition, the strength of the induction heating power of the adhesive was high and the adhesive strength was improved as the adhesive thickness was thinner.

Functional Improvement of Hot Melt Adhesive Using Polyamide Type Resin -(I) Physical Properties of Adhesives- (폴리아미드계 수지를 이용한 핫멜트 접착제의 기능 향상 -(I) 접착제의 물성-)

  • Chun, Young-Sik;Hong, Young-Keun;Chung, Kyung-Ho
    • Applied Chemistry for Engineering
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    • v.7 no.1
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    • pp.194-202
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    • 1996
  • Hot melt adhesive based on the polyamide resin was studied to improve the conventional hot melt adhesives such as ethylene-vinyl acetate which have inherent problems against creep and heat resistance. It was found that the terpolymer of nylons6, nylon66, and nylon12 or the nylon blend instead of nylon homopolymer was suitable base resin for hot melt adhesives, since the disruption of regularity in the polymer chains reduced the crystallinity, resulting in lower melting point and melt viscosity. Also, the rheological properties of the polyamide based hot melt adhesive could be controlled by the incorporation of terpene resin, butyl benzyl phthalate, and paraffin wax. The results of melt viscosities and tensile properties of adhesive itself indicated that the optimum adhesion properties could be obtained through the blending of CM831/843P resins with weight ratio 75/25~50/50. The adhesion between steel and steel was tested by using lap shear geometry. It was found that the surface roughness of steel affected the adhesion strength.

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Functional Improvement of Hot Melt Adhesive Using Polyamide Type Resin - (II) The Effects of Terpene Resin - (폴리아미드계 수지를 이용한 핫멜트 접착제의 기능향상 - (II) 테르펜수지의 영향 -)

  • Chung, Kyung-Ho;Hong, Young-Keun;Chun, Young-Sik
    • Applied Chemistry for Engineering
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    • v.9 no.2
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    • pp.226-231
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    • 1998
  • Hot melt adhesive which is solventless type has been widely used due to the possibility of automated adhesion process. The main purpose of this study is the development of polyamide based hot melt adhesive to improve the property of conventional ethylene-vinyl acetate hot melt adhesive, which has an inherent problem against heat resistance. In this study, it was found that the terpolymers of nylon 6, nylon 66, and nylon 12(CM831, 843P types) instead of nylon homopolymer were suitable base resins for hot melt adhesive, since the disruption of regularity in the polymer chains reduced the crystallinity, resulting in lower melting point and melt viscosity. According to the results, the optimum adhesion property could be obtained by the using 75/25~50/50 weight radio of CM831/843P resin as a base resin. Terpene resin was used as tackifier to improve adhesion and wetting properties. The best result can be obtained with the 10 wt.% addition of terpene resin. The terpene resin acted as proper tackifier in this system which decreased the melt temperature and viscosity, but increased the mechanical strength of adhesive itself. Also, the rheological property of the adhesive changed from typical non-Newtonian behavior to Newtonian behavior as terpene resin was added.

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Adhesion Property of Low-Viscosity Polyurethane Hot-Melt Adhesive in according to the Deblocking Temperature and Content of Reactive Diluents (해리온도와 반응성 희석제 함량에 따른 저점도 폴리우레탄 핫멜트 접착제의 접착특성)

  • Choi, Min Ji;Jeong, Boo Young;Cheon, Jung Mi;Ha, Chang-Sik;Chun, Jae Hwan
    • Journal of Adhesion and Interface
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    • v.17 no.2
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    • pp.67-71
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    • 2016
  • In this study, low-viscosity polyurethane hot-melt were synthesized with polyether polyol / polyester polyol, 4,4-dicyclohexylmethane diisocyanate ($H_{12}MDI$), 2-butanone oxime (MEKO) to improve the properties and peel strength. The properties of the synthesized low-viscosity polyurethane hot-melt was evaluated through FT-IR, viscosity meter and UTM. When the content of the reactive diluent increases and the NCO-blocked prepolymer decreases, the viscosity of low-viscosity polyurethane hot-melt adhesive was increased. When the ratio of OH-terminated oligomer, NCO-blocked prepolymer and content of reactive diluent is 1 : 0.5 : 0.5, low-viscosity polyurethane hot-melt showed 1.1 kgf/cm peel strength.

Functional Improvement of Hot Melt Adhesive Using Polyamide Type Resin - (III) The Effect of Wax and Filler - (폴리아미드계 수지를 이용한 핫멜트 접착제의 기능 향상 - (III) 왁스와 충전제의 영향 -)

  • Chung, Kyung-Ho;Han, Kyung-A;Cho, Wook-Sang
    • Applied Chemistry for Engineering
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    • v.16 no.6
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    • pp.827-833
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    • 2005
  • This study focused on the establishment of optimum formulation of polyamide based hot melt adhesive through adhesive synthesis, study of physical property, and adhesion study. In the previous study, the optimum formulation of base resins (CM831, 843P) and tackifying resin (terpene resin) was determined. The weight ratio of CM831, 843P, and terpene resin was 75, 25, and 10, respectively. Based on the optimum formulation, the effect of wax and filler addition was examined in this study. According to the results, the maximum adhesion strength with the steel could be obtained by the addition of 5 wt% of polyethylene wax although the melt viscosity of adhesive decreased continuously with the addition of wax. In the case of filler, the optimum adhesion property could be achieved by the addition of 10 wt% of talc. However, the addition of filler caused little increase of melt viscosity of adhesive.

Textile Adhesion Properties of Polyurethane Hot Melt Adhesives Containing Ester Groups (에스터기를 함유한 폴리우레탄 핫멜트 접착제의 직물에 대한 접착물성)

  • RANJi, Sepideh;LEE, Myung Cheon
    • Journal of Adhesion and Interface
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    • v.19 no.3
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    • pp.118-122
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    • 2018
  • In this study, polyurethane hot melt adhesive containing ester groups was synthesized. Three kinds of chain extenders were used to find out the best chain extender. Results showed that adhesive containing 1,4-butanediol as a chain extender exhibited the highest peel strength among them. Also, it was found that there existed the optimum molecular weight of 1,4-butanediol containing adhesive for make the highest peel strength.. Moreover, hot melt adhesive containing 1,4-butanediol chain extender was applied to various kinds of textiles substrate such as cotton, polyester, and urethane coated polyester textiles to study the effects of different substrates on the peel strength and water resistance at $60^{\circ}C$. It was found that cotton substrate showed the highest peel strength and urethane coated polyester substrate showed the highest resistance on $60^{\circ}C$ water.

Reactive Hot Melt Polyurethane Adhesives Modified by Acrylic Copolymer Nanocomposites

  • Cho, Youn-Bok;Jeong, Han-Mo;Kim, Byung-Kyu
    • Macromolecular Research
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    • v.17 no.11
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    • pp.879-885
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    • 2009
  • A macroazoinitiator (MAI) containing a poly(ethylene glycol) (PEG) segment was intercalated in the gallery of sodium montmorillonite (Na-MMT). Acrylic monomers were polymerized using this MAI intercalated in Na-MMT to prepare the acrylic copolymer nanocomposite (AN), which is a multiblock copolymer composed of two segments, an acrylic copolymer and PEG intercalated in Na-MMT (Na-MMT/PEG). When AN was used to modify the reactive hot melt polyurethane adhesive (RHA), the acrylic copolymer segment and Na-MMT/PEG synergistically enhanced the initial bond strength evolution and reduced the set time, even when the amount of Na-MMT in RHA was < 1 wt%. The viscosity of RHA increased and the tensile properties of the cured RHA film decreased due to modification with AN. These variations were more evident as the Na-MMT content in AN was increased.

A Study on Adhesion Performance of Styrene-Block-Copolymer Based Hot Melt Pressure Sensitive Adhesives with Dicyclopentadiene Based Hydrogenated Hydrocarbon Resins (수첨 DCPD계 석유수지를 이용한 SBCs계 핫멜트점착제의 접착성능 연구)

  • Shim, Jaeho;Kim, Yunho;Lee, Jungjoon
    • Journal of Adhesion and Interface
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    • v.15 no.4
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    • pp.145-150
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    • 2014
  • Dicyclopentadiene (DCPD)-based hydrocarbon resins are widely used as tackifiers in many applications. In particular, hydrogenated DCPD-based hydrocarbon resins are widely used in premium hot-melt-type adhesives such as hot melt adhesives (HMAs) and/or hot melt pressure-sensitive adhesives (HMPSAs), because are water-white in color and possess excellent stability to light and heat. This article discusses the adhesive performance of various hydrogenated DCPD resins when they are used as tackifiers in styrene-block-copolymer (SBC)-based HMPSAs. This article shows the correlation between the characteristics of tackifiers and the adhesive performance of SBC-based HMPSAs. The higher the softening point of the tackifier, the higher is the $T_g$, softening point, and crossover temperature of the PSAs. High aromatic H wt% content reduces the high-temperature resistance of PSAs, as suggested by the decrease in the crossover temperature and softening point of the PSAs.