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Synthesis of Adhesion Promoters with Improved Compatibility and Properties of UV-Curable Adhesives Containing Adhesion Promoters

상용성이 개선된 접착 증진제의 합성 및 이를 함유한 자외선 경화형 접착제의 특성분석

  • Received : 2018.11.14
  • Accepted : 2018.12.19
  • Published : 2018.12.30

Abstract

In this study, adhesion promoters with acrylate and carboxylic acid moiety were synthesized from malenized polybutadiene and 2-hydroxyethyl acrylate for producing adhesive film with low water absorption and high adhesion. The surface properties, adhesion strength, mechanical properties and water absorption of adhesive films were characterized according to the amount of acrylate and carboxylic acid in the synthesized adhesion promoters. As the carboxylic acid in the adhesion promoters increased, the adhesion strength showed a tendency to increase and the mechanical properties also improved compared to the commercial adhesion promoter. The compatibility of adhesion promoters improved remarkably due to the presence of polybutadiene (hydrophobic nature), maleic anhydride (hydrophilic nature) and carboxylic acid (hydrophilic nature).

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Figure 1. Synthetic process of adhesion promoters (PBCAs).

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Figure 2. Synthetic process of polybutadiene based urethane acrylate oligomer (PB-UAO).

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Figure 3. FT-IR spectra of synthesized adhesion promoters(PBCAs).

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Figure 4. Maleic anhydride conversion of synthesized adhesion promoters (PBCAs).

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Figure 5. FT-IR spectra of synthesized polybutadiene based urethane acrylate oligomer (PB-UAO).

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Figure 6. Contact angles (Distilled water) of adhesive films as a function of adhesion promoters.

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Figure 7. Water absorption properties of adhesive films as a function of adhesion promoters.

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Figure 8. Adhesion strength of adhesive films as a function of adhesion promoters.

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Figure 9. Tensile strength of adhesive films as a function of adhesion promoters.

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Figure 10. Elongation of adhesive films as a function of adhesion promoters.

Table 1. Materials used in adhesion promoter (PBCA) synthesis

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Table 2. Materials used in polybutadiene based urethane acrylate oligomer (PB-UAO) synthesis

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Table 3. Compositions for adhesion promoter (PBCA) synthesis.

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Table 4. Compatibilities of commercial and synthesized adhesion promoters

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Acknowledgement

Supported by : 산업통상자원부

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