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以自制含聚醚类侧链的聚硅氧烷为增韧剂,一方面聚氧化乙烯亲水链段的引入,除了起到增韧作用外,还改善有机硅的水溶性,使其能分散在水中,另一方面,侧链中的脂肪族柔性碳链也是传统的增韧结构,起到协同增韧的作用。由此类改性硅氧烷作为增韧剂制备的水溶性酚醛树脂,将其应用于机油滤纸的增强整理。结果表明,浸渍固化滤纸后力学性能相对纯酚醛树脂浸渍的滤纸有较大幅度的提高,其中耐破度可提高25%,抗张强度和挺度也有不同程度的提高,而伸长率和断裂功分别提高了72%和79%,大大减轻了酚醛树脂固化滤纸固有的脆性,提高了加工性能和使用性能。
The polyether-based side-chain-containing polysiloxane as a toughening agent, on the one hand the introduction of polyethylene oxide hydrophilic segment, in addition to play a toughening effect, but also to improve the water-soluble silicone to disperse In water, on the other hand, the aliphatic flexible carbon chains in the side chains are also conventional toughened structures that act synergistically to toughen the skin. A kind of water-soluble phenolic resin prepared from these modified silicones as toughening agent is applied to enhance the finishing of oil filter paper. The results showed that the mechanical properties of impregnated filter paper relative to the pure phenolic resin impregnated filter paper has greatly improved, of which the burstability can be increased by 25%, tensile strength and stiffness also have different degrees of increase, while the elongation and fracture Work improved by 72% and 79% respectively, greatly reducing the inherent brittleness of phenolic resin-cured filter paper and improving the processability and serviceability.