腈纶的油剂科技

腈纶油剂的作用一般包含使纤维与金属润滑,以保护纤维和金属表面接触,及使纤维与纤维润滑,以确保纱的均匀与质量。良好的抗静电保护和对湿度变化的低敏感性亦极为重要。长链磷酸酯被广泛认为对湿度变化低敏感,并具有良好的纤维对金属、纤维对纤维的润滑。本文提供了不同腈纶工艺对油剂需求的详细检视。一般上油量不超过0.3％～0.5％,但在工艺上却扮演极重要角色。油剂厂针对各种不同用途提供特别设计的油剂,及与纤维厂建立密切的合作伙伴关系,才能达到最佳的纤维工艺特性。

Optimization of machining parameters in turning of Al-SiC-Gr hybrid metal matrix composites using grey-fuzzy algorithm

Metal matrix composites reinforced with graphite particles provide better machinability and tribological properties. The present study attempts to find the optimal level of machining parameters for multi-performance characteristics in turning of Al-SiC-Gr hybrid composites using grey-fuzzy algorithm. The hybrid composites with 5%, 7.5% and 10% combined equal mass fraction of SiC-Gr particles were used for the study and their corresponding tensile strength values are 170, 210, 204 MPa respectively. Al-10%（SiC-Gr） hybrid composite provides better machinability when compared with composites with 5% and 7.5% of SiC-Gr. Grey-fuzzy logic approach offers improved grey-fuzzy reasoning grade and has less uncertainties in the output when compared with grey relational technique. The confirmatory test reveals an increase in grey-fuzzy reasoning grade from 0.619 to 0.891, which substantiates the improvement in multi-performance characteristics at the optimal level of process parameters setting.

新纤维的油剂设计

给出了新纤维油剂研发时需考虑的问题,列举了要进行的基本测试,并以新纤维长丝和短丝为例说明油剂设计过程中各项考虑因素。

聚丙烯腈纤维的上油工艺

阐述了油剂在纤维加工时的重要作用 ,并分别介绍了加工不同类型的聚丙烯腈纤维和不同加工工艺对油剂的要求、油剂组成和上油工艺。