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利用六钛酸钾晶须(K_2O·6TiO_2)对苯并噁嗪(BOZ)树脂及玻璃纤维/苯并噁嗪(GF/BOZ)复合材料的摩擦磨损性能进行改性,分析了K_2O·6TiO_2/BOZ复合材料以及K_2O·6TiO_2-GF/BOZ混杂复合材料的摩擦磨损性能以及改性机理。结果表明:因K_2O·6TiO_2的加入,K_2O·6TiO_2/BOZ复合材料以及K_2O·6TiO_2-GF/BOZ混杂复合材料的摩擦系数和比磨损率较纯BOZ树脂和GF/BOZ复合材料的明显降低。K_2O·6TiO_2显著减轻了BOZ树脂和GF/BOZ复合材料的摩擦粘着状况,使摩擦系数降低,同时磨粒磨损情况也大为减轻。GF/BOZ复合材料在摩擦过程中摩擦应力通过率先破坏GF和BOZ树脂的界面,进而诱发破坏GF束内、GF束间和层间BOZ树脂,使得GF/BOZ复合材料的摩擦系数比BOZ树脂降低,但比磨损率较BOZ树脂升高,而K_2O·6TiO_2的加入,使K_2O·6TiO_2-GF/BOZ混杂复合材料的比磨损率有效降低。BOZ树脂、GF/BOZ、K_2O·6TiO_2-GF/BOZ 3种材料的摩擦系数和比磨损率分别为0.34和0.66×10~(-6) mm3·(N·m)~(-1),0.19和1.2×10~(-6) mm~3·(N·m)~(-1),0.09和0.69×10~(-6) mm~3·(N·m)~(-1)。
The friction and wear properties of benzoxazine (BOZ) resin and glass fiber / benzoxazine (GF / BOZ) composites were modified by potassium hexatitanate whiskers (K_2O · 6TiO_2). The effects of K_2O · 6TiO_2 / Friction and Wear Properties and Modification Mechanism of BOZ Composites and K_2O · 6TiO_2-GF / BOZ Hybrid Composites. The results show that the friction coefficient and specific wear rate of K_2O · 6TiO_2 / BOZ composite and K_2O · 6TiO_2-GF / BOZ hybrid composite are significantly lower than pure BOZ resin and GF / BOZ composite due to the addition of K_2O · 6TiO_2. K_2O · 6TiO_2 significantly reduced the friction and adhesion between BOZ resin and GF / BOZ composites, reduced the friction coefficient and greatly reduced abrasive wear. The frictional stress of GF / BOZ composite destroys the interface between GF and BOZ resin first, then induces the destruction of GF / BOZ resin and the inter-layer BOZ resin, which makes the friction coefficient of GF / BOZ composite lower than that of BOZ resin , But the specific wear rate was higher than that of BOZ resin. The addition of K 2 O 6 TiO 2 effectively reduced the specific wear rate of K 2 O 6 Ti 2 O 2 -GF / BOZ hybrid composites. The friction coefficient and specific wear rate of BOZ resin, GF / BOZ, K2O · 6TiO_2-GF / BOZ were 0.34 and 0.66 × 10 -6 mm 3 · N · m -1, And 1.2 × 10 -6 mm 3 · N · m -1, 0.09 and 0.69 × 10 -6 mm 3 · N · m -1, respectively.