Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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A Study on the Processing Characteristic in the Compression Molding of Hybrid Thermoplastic Composites

하이브리드 열가소성 복합재료의 압축성형에서 공정특성에 관한 연구

  • 허석봉 (전북대학교 대학원 고분자공학과) ;
  • 이중희 (전북대학교 신소재공학부) ;
  • 신귀수 (전북대학교 기계공학부) ;
  • 이경엽 (경희대학교 기계공학부)
  • Published : 2002.12.01
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Abstract

Hybrid composites usually are defined as composites having different types of reinforcements such as fibers and particles. The major advantage of hybrid composites is able to control the material properties such as optical, electrical, and mechanical properties. For this reason, hybrid composites are widely used in automotive, marine, household, and electrical industries. The objective of this work was to investigate processing characteristics in the compression molding of hybrid thermoplastic composites. The mechanical properties of composites manufactured in various forming conditions were monitored. The composites contained randomly oriented long carbon fiber and carbon black in polypropylene(PP) matrix were used. The carbon fiber contents of composites were 5%, 10%, 15%, and 20%, and carbon black contents were 5%, 10%, 15%, 20%, and 25% by weight. Compression molding was conducted at various mold temperatures. Crstallinity was also measured by using X-RD. The tensile modulus of the composites increased with increasing the mold temperature. However, the impact strength of the composites decreased as the mold temperature increased.

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References

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