• 한국응용과학기술학회지
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• 제25권3호
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• pp.332-340
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• 2008

Two component polyurethane (PU) flame retardant coatings were prepared by blending trichloro modified polyesters (TCMPs) and isophorone diisocyanate isocyanurate. TCMPs were synthesized by polycondensation of trichlorobenzoic acid (TCBA), a flame retardant component, with adipic acid, 1,4 butanediol, and trimethylolpropane. The content of TCBA was varied in 10, 20, and 30 wt% for the reaction. Theses new flame retardant coatings showed various properties comparable to other non flame retardant coatings. Moreover, we carried out the combustion test and the flammability test for our flame retardant coatings. The results of vertical burning test for the coatings containing more than 20 wt% of TCBA were determined as no burn. The results of flammability test for the coatings with 20 wt% and 30 wt% of TCBA contents indicated the limiting oxygen index (LOI) values of 26% and 29% respectively, which implied relatively good flame retardancy.

• 한국응용과학기술학회지
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• 제22권3호
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• pp.270-280
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• 2005

To maximize a synergy effect in flame-retardancy of flame-retardant coatings, phosphorus and chlorine were introduced in polymer chains. Two-components PU flame-retardant modified polyesters (ABTTC-10C, -20C, -30C) were prepared by curing, at room temperature, of isocyanate (allophanate-trimer) and prepared modified polyesters which contain phosphorus and chlorine. To examine the film properties of the prepared flame-retardant coatings, film specimens were prepared with the prepared coatings. The film properties of ABTTC, ABTTC-10C and ABTTC-20C, which contain 0, 10 and 20wt%, 2,4-dichlorobenzoic acid (2,4-DCBA), respectively, were proved to be good, whereas the film properties of ABTTC-30C, which contains 30wt% 2,4-DCBA, were proved to be a little bit poor. Two kinds of flame retardancy tests, $45^{\circ}$Meckel burner method and LOI method, were performed. With the $45^{\circ}$Meckel burner method, three flame-retardant coatings except ABTTC showed less than 3.4 cm of char length, and showed less than 2 seconds of afterflaming and afterglow. From this result, the prepared flame-retardant coatings were proved to have the 1st grade flame retardancy. With the LOI method, the LOI values of the coatings containing more than 10wt% 2,4-DCBA were higher than 30wt%, which means that the coatings possess good flame-retardancy. From these results, it was found that synergistic effect in flame-retardancy was taken place by the introduced phosphorus and chlorine.

• Journal of the Korean Wood Science and Technology
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• 제30권2호
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• pp.172-179
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• 2002

본 연구에서는 MDF와 잣나무 판재에 대한 난연처리 및 난연도장 처리 시험편에 대한 난연 효과에 대해 고찰하였다. 무처리 MDF와 잣나무판재에 대한 td𝜃은 각각 279.5, 182.5로 나타났으나 난연침지 처리된 무늬단판을 오버레이한 MDF를 난연도장 처리 한 경우 높은 난연성능을 나타냈다. 난연처리한 잣나무판재에 난연도장 처리를 할 경우 th𝜃가 90으로 나타났고, 난연침지 처리 된 무늬단판이 오버레이 된 MDF에 난연도장처리한 경우에는 th𝜃가 0으로 나타난 가장 뛰어난 난연성능을 나타냈다. 전체적으로 난연처리 및 난연도장처리를 한 경우 th𝜃가 감소하는 것으로 나타나 난연성능이 개선되는 것으로 나타났다. 또한 연소도 시험결과 시험편의 중량감소율은 난연처리와 난연도장처리에 의해 감소함으로써 난연성능이 개선되는 것으로 나타났다. 또한 착화시간과 잔염시간의 측정결과도 유사하게 나타났으며 난연침지 처리 된 무늬단판이 오버레이 된 MDF 및 난연처리된 잣나무판재에 난연도장 처리한 경우 무처리된 경우에 비해 착화시간은 증가되고, 잔염시간은 감소하는 것으로 나타났다.

• 한국응용과학기술학회지
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• 제17권4호
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• pp.240-247
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• 2000

Two-component polyurethane flame-retardant coatings were prepared by blending trichloro aromatic modified polyesters(TCMPs) and polyisocyanate. TCMPs were synthesized by polycondensation of trichlorobenzoic acid(TCBA), a flame-retardant component, with adipic acid, 1,4-butanediol, and trimethylolpropane. The content of TCBA was varied in 10, 20, and 30 wt% for the reaction. These new flame-retardant coatings showed various properties comparable to other non-flame-retardant coatings. Moreover, we carried out the combustion test and the flammability test for our flame-retardant coatings. The results of vertical burning test for the coatings containing more than 20 wt% of TCBA were determined as 'no burn'. The results of flammability test for the coatings with 20 wt% and 30 wt% of TCBA contents indicated the limiting oxygen index(LOI) values of 25% and 28% respectively, which implied relatively good flame retardancy.

• 한국응용과학기술학회지
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• 제23권3호
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• pp.264-271
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• 2006

PU type flame-retardant coatings (TBAO/L-75, TBAOL ; TBAO/N-100, TBAON) were prepared by blending bromine-containing modified polyester (TBAO) which was synthesized in our earlier work. with two kinds of isocyanate curing agents, Desmodur L-75 and Desmodur N-100. Physical properties of the prepared flame-retardant coatings were tested. TBAOL shows better hardness than TBAON, while TBAON shows better viscosity, accelerated weathering resistance, yellowness index and lightness index difference than TBAOL. There were no remarkable differences in fineness of grind, $60^{\circ}$ specular gloss, cross-hatch adhesion, and abrasion resistance of TBAOL and TBAON. There was no discernable difference in flame-retardancy between the two flame-retardant coatings, TBAOL and TBAON. When the content of tribromo acetic acid, which is flame-retarding component, was 30wt% the LOI value was in a range of $29{\sim}30%$, which indicates that the two coatings are good flame-retardant coatings.

• 폴리머
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• 제26권2호
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• pp.200-208
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• 2002

난연성분인 트리클로로벤조산(TBA)의 함량을 10, 20, 30 wt%로 변화시키면서 아디프산, 1,4-부탄디올 및 트리메틸올프로판과 축중합을 하여 트리클로로 락톤 변성폴리에스테르(TAPTs)를 합성한 후에, TAPT류와 이소시아네이트인 Desmodur IL을 블렌드하여 2성분계 폴리우레탄 난연 도료를 제조하였다. 제조된 난연도료의 도막물성을 측정한 결과, 결코 비난연도료보다 물성이 떨어지지 않음을 알았다. 또한 난연도료의 3종류 난연성 시험결과, 수직법에서 TBA 함량 20 wt% 이상에서 불꽃에 타지 않았고, LOI 연소성 시험에서 TBA 함량 20, 30 wt%시 25%와 27%의 LOI값을 나타내었으며, $45^{\circ}$ Meckel burner법에서는 탄화길이가 3.6-5.2 cm로서 난연 1급에 해당되었으므로 이를 미루어 난연효과가 좋은 난연도료임을 알 수 있었다.

• 한국응용과학기술학회지
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• 제20권2호
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• pp.110-117
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• 2003

Pyrophosphoric modified polyesters (TATBs) were synthesized by polycondensation of adipic acid, trimethylolpropane, 1,4-butanediol, and tetramethylene bis(orthophosphate). Two-component PU flame-retardant coatings (TATBCs) were prepared by blending TATBs with HDI-Biuret. Most of the physical properties of the flame-retardant coatings were comparable to those of non-flame-retardant coatings. Coatings containing 10 and 15wt% 1,4-butanediol, TATBC-10C and TATBC-15C were not flammable in the vertical flame-retardancy test.

• 한국응용과학기술학회지
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• 제15권3호
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• pp.77-84
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• 1998

Two-component polyurethane flame retardant coatings were prepared by blending phosphate-containing modified polyesters(PMPEs) and TDI-adduct. PMPEs were synthesized by polycondensation of dimethyl phenylphosphonate, a flame retardant component, with 1,4-butanediol, adipic acid, and trimethylolpropane. The content of dimethyl phenylphosphonate was varied 10, 15, and 20wt% for the reaction. Various physical properties of these new flame retardant coatings were comparable to non-flame retardant coatings. Coatings with 20wt% dimethyl phenylphosphonate did not burn during the vertical burning test.

• 한국응용과학기술학회지
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• 제17권3호
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• pp.203-211
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• 2000

Pyrophosphoric lactone modified polyester(PATT) that contains two phosphorous functional groups in one unit base resin structure was synthesized to prepare a non-toxic reactive flame retardant coatings. Then the PATT was cured at room temperature with isocyanate, Desmodur IL, to get a two-component polyurethane flame retardant coatings(PIPUC). Comparing the physical properties of the films of PIPUC with the film of non-flame retardant coatings, there was no degradation observed in physical properties by the introduction of a flame-retarding component into the resin. We found that the char lengths measured by $45^{\circ}$Meckel burner method were $3.1{\sim}4.4cm$ and LOI values recorded $27{\sim}30%$. These results indicate that the coatings prepared in this study is good flame retardant one. The surface structure of coatings investigated with SEM does not show any defects and phase separation.

• 폴리머
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• 제25권3호
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• pp.391-398
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• 2001

난연성분인 트리브로모아세트산의 함량을 10, 20, 30wt%로 변화시키면서 1,4-부탄디올, 아디프산 및 트리메틸올프로판과 축합중합을 하여 트리브로모 변성폴리에스테르(TBAO)를 합성한 후에, TBAO류와 이소시아네이트를 블렌드하여 2성분계 폴리우레탄(PU) 난연도료를 제조하였다. 제조된 난연도료의 도막물성을 측정한 결과, 결코 비난연도료보다 물성이 저하되지는 않았다. 또한 난연도료의 난연성 시험결과, 수직법에서 트리브로모아세트산 20 wt%에서 불꽃에 타지 않아서 양호한 난연도료임을 알 수 있었다.