유두컵 라이너의 물리화학적 특성 조사

A Study on the Physical and Chemical Properties of Teat Cup Liners

  • 이정치 (서정대학 애완동물과) ;
  • 박형련 (전남대학교 자연과학대학) ;
  • 김명선 (금호산업㈜사업부 연구소) ;
  • 이정길 (전남대학교 수의과대학) ;
  • 이채용 (전남대학교 수의과대학)
  • Lee Jeong-chi (Department of Veterinary nurse and pets sciences, Seojeong College) ;
  • Park Hyoung-ryun (College of Natural Sciences, Chonnam National University) ;
  • Kim Myeong-seon (R&D Center Tire Business Unit, Kumho Industrial Co. Ltd.,) ;
  • Lee Chung-gil (College of Veterinary Medicine, Chonnam National University) ;
  • Lee Chai-yong (College of Veterinary Medicine, Chonnam National University)
  • 발행 : 2005.06.01

초록

This study was carried out to investigate the physical and chemical properties of teat cup liners. The hardness of the liners was $50\~67$, and their fatigue to failure 38-1,185 cycles. The elongation and tensile strength of these liners were about $134 kgf/cm^2\;and\;473\%$, respectively. The infrared spectrum and the gas chromatogram revealed that the liner A was consisted of NR, SBR, and BR, with a composition ratio of 60:20:20 (part per hundred rubber). The raw rubber materials used for liners B to G, on the other hand, were NBR only. However, the liner H was made of silicon rubber. The thermogravimetric analysis showed that the liners tested in this study contained raw rubber material, carbon black, organic compounds and metallic compounds.

키워드

참고문헌

  1. Binder JL. Infrred spectra of polybutadienes. Rubber Chem Technol 1966; 39: 945-955 https://doi.org/10.5254/1.3547158
  2. Blokh GA, Mal'nev AF. Infrared spectra of cured and uncured rubbers. Rubber Chem Technol 1959; 32: 628-638 https://doi.org/10.5254/1.3542429
  3. Brachaczek W, Pierson WR. Analytical method for measuring SBR tire debris in the environment. Rubber Chem Technol 1974; 47: 150-160 https://doi.org/10.5254/1.3540421
  4. Butler MC, Adley AJD. Measurement of teat cup liner wall movement J Dairy Res 1993; 60: 1-7 https://doi.org/10.1017/S0022029900027291
  5. Butler MC, Hillerton JE, Grindal RJ. The control of milk flow through the teats of diary cows. J Dairy Sci 1992; 75: 1019-1024 https://doi.org/10.3168/jds.S0022-0302(92)77845-X
  6. Choi IS, Roland CM. Strain-crystallization of guayule and hevea rubbers. Rubber Chem Technol 1997; 70: 202-210 https://doi.org/10.5254/1.3538425
  7. Fiorenza A, Bonomi G. Identification of elastomers by infrared spectrophotometry. Rubber Chem Technol 1963; 36: 1129-1147 https://doi.org/10.5254/1.3539635
  8. Gedeon BJ, Nguyen RH. Computerization of ASTM D 3677-rubber identification by infrared spectrophotometry. Rubber Diviion, Am Chem Soc 1985; 128: 64
  9. Ghebremeskel GN, Sekinger JK, Hoffpauir JL, Hendrix C. A study of the thermal degradation products of styrenebutadiene type rubber by pyrolysis/GC/MS. Rubber Chem Techol 1996; 69: 874-884 https://doi.org/10.5254/1.3538409
  10. Leveque P. Teatcup liners. Product Lait Quebe 1998; 18: 34-36
  11. Mein GA, Williams DM, Thiel CC. Compressive load applied by the teatcup liner to the bovine teat. J Dairy Res 1987; 54: 327-337 https://doi.org/10.1017/S0022029900025504
  12. Petukhov NA, Markin VV, Petukhova RS, Drolova LI, Zhelovatykh ZM. Effect of the teatcup liner on milk secretion and udder condition. Nauchno Tekhnicheskii Byulleten 1990; 3-4: 28-30
  13. Rasmussen MD, Frimer ES, Kaartinen L, Jensen NE. Milking performance and udder health of cows milked with two different liners. J Dairy Res 1998; 65: 353-363 https://doi.org/10.1017/S0022029998002994
  14. Schwart NV. Analysis of rubber compounds by means of thermogravimetry and pyrolysis-GC. Rubber Division, Am Chem Soc 1983; 123: 10
  15. Shield SR, Ghebremeskel GN, Hendrix C. Pyrolysis-GC/MS and TGA as tools for characterizing blends of SBR and NBR. Rubber Chem Technol 2001; 74: 803-813 https://doi.org/10.5254/1.3547654
  16. Spencer SB, Jones LR. Liner wall movement and vacuum measured by data acquisition. J Dairy Sci 2000; 83: 1110-1114 https://doi.org/10.3168/jds.S0022-0302(00)74976-9