摘要
为探究玻纤结构对绝缘槽楔力学性能和阻燃性的影响,以阻燃树脂和玻璃纤维、玻璃纤维布为原料,制备了单向玻璃纤维增强槽楔、玻璃布层压板槽楔和卷包玻璃布增强槽楔,并对3种槽楔进行纵向冲击试验、宽度方向弯曲试验和燃烧试验。结果表明:在截面尺寸和玻纤含量相同的条件下,槽楔抗纵向冲击能力由强至弱为卷包玻璃布增强槽楔、玻璃布层压板槽楔、单向玻纤增强槽楔,槽楔宽度方向承受弯曲载荷时产生的弹性形变由大至小为卷包玻璃布增强槽楔、玻璃布层压板槽楔、单向玻纤增强槽楔,槽楔阻燃性由强至弱为卷包玻璃布增强槽楔、玻璃布层压板槽楔、单向玻纤增强槽楔。3种槽楔的阻燃性都随玻纤含量的增加而下降,当玻纤含量从约50%增加到70%时,单向玻纤增强槽楔的总余焰时间增加了约51.7%,玻璃布层压板槽楔的总余焰时间增加了约31.8%,卷包玻璃布增强槽楔的总余焰时间增加了约46.3%。
In order to investigate the effects of glassfiber architecture on the mechanical and fire-resistant performance of insulating slot wedge, unidirectional glassfiber, laminated glassfiber fabric, and rolled glassfiber fabric reinforced slot wedge were prepared using fire-resistant resin, glass fiber, glassfiber fabric as raw material, and the 3 types of slot wedge samples were conducted longitudinal impact strength test, width-directional bending strength test, and combustion tests. The results show that with the same sectional dimension and the same content of glassfiber for slot wedges, the order of longitudinal impact strength from strong to weak is glassfiber fabric reinforced slot wedge, glassfiber fabric laminated slot wedge,unidirectional glassfiber reinforced slot wedge;the order of elastic deformation during width-directional bending from big to small is glassfiber fabric reinforced slot wedge, glassfiber fabric laminated slot wedge, unidirectional glassfiber reinforced slot wedge;the order of fire resistance from strong to weak is glassfiber fabric reinforced slot wedge, glassfiber fabric laminated slot wedge, unidirectional glassfiber reinforced slot wedge. When the glassfiber content increases from 50% to 70%, the total afterflame time of the unidirectional glassfiber reinforced slot wedge, glassfiber fabric laminated slot wedge,and rolled glassfiber fabric reinforced slot wedge increases by 51.7%, 31.8%, and 46.3%, respectively.
作者
胡道雄
何定
陈瑞
凌斌
HU Daoxiong;HE Ding;CHEN Rui;LING Bin(Zhejiang Bofay Electric Co.,Ltd.,Haining 314400,China)
出处
《绝缘材料》
CAS
北大核心
2023年第3期14-18,共5页
Insulating Materials
关键词
玻纤结构
绝缘槽楔
阻燃性
纵向冲击
宽度方向弯曲
glassfiber architecture
insulating slot wedge
fire resistance
longitudinal impact
width-directional bending
