CAJ | 학술논문

研究了聚乙烯(PE)DFDC-7050中色粒超标及其他牌号中黑粒和细粉以及聚丙烯(PP)中色粒和拖尾粒等影响颗粒外观质量问题的原因.结果表明:PE中色粒超标是因为滑石粉含量偏高,黑粒是因为PE炭化物熔入或黏附在PE颗粒内部或外部,细粉是因为PE颗粒表面的毛刺脱落形成;PP中色粒超标是因为粉料中氮气干燥未达预期效果,拖尾料是因切粒刀不锋利、进刀风压及切刀转速不合适造成的.通过工艺技术改进、操作优化,加强过程质量监控,解决了聚烯烃颗粒外观的质量问题.
연구료취을희(PE)DFDC-7050중색립초표급기타패호중흑립화세분이급취병희(PP)중색립화타미립등영향과립외관질량문제적원인.결과표명:PE중색립초표시인위활석분함량편고,흑립시인위PE탄화물용입혹점부재PE과립내부혹외부,세분시인위PE과립표면적모자탈락형성;PP중색립초표시인위분료중담기간조미체예기효과,타미료시인절립도불봉리、진도풍압급절도전속불합괄조성적.통과공예기술개진、조작우화,가강과정질량감공,해결료취희경과립외관적질량문제.
The author studied the reasons of affecting the granular appearance quality problems in the polyolefin. The quality problems included the color particle which exceeded the standard in the polyethylene (PE)DFDC-7050,impurity particle and fines in other grades PE,color particle and tailing particle in the polypropylene(PP). The results showed that the color particle in the PE which exceeded the standard was because of the high content of talc,the impurity particle was due to the PE carbide melting or adhesion to the internal or external PE particles and the fines was generated because of the burr on the surface of the PE particle came off. The color particle in the PP which exceeded the standard was because of the powders in nitrogen drying did not reach the expected effect,the tailing particle was a result of the blunt pellet cutting knives,inappropriate feed pressure and cutter speed. The quality problems of granular appearance were solved through modifying the technology,optimizing operation and strengthening the process quality monitoring.