通过对4种涂层进行切向结冰循环剥离测试发现,样件A涂层虽然具有高的接触角,但是随着切向结冰剥离次数的增加,涂层的接触角逐渐降低,切向冻粘强度逐渐增大;而样件B、C、D涂层表面的接触角及切向冻粘强度变化不大,但样件B涂层的切向冻粘强度较低,通过向样件B涂层的配方中添加不同含量的端乙烯基三氟丙基聚硅氧烷后,发现当其质量分数为20%时,涂层具有较高的接触角及较低的切向冻粘强度,最后通过对端乙烯基三氟丙基聚硅氧烷质量分数为20%时涂层进行不同结冰温度、不同结冰时间的切向冻粘强度的测试发现,随着冻粘时间的延长及冻粘温度的降低,冰与涂层表面的切向冻粘强度呈逐渐增大的趋势,最后给出了较佳的除冰时间及温度.
There are four different kinds of coatings was prepared and the shear stresses of ice detachment were tested,the sample A has a high contact angle,but with increasing icing/deicing cycles times,the contact angle decreases and shear stresses of ice detachment increases gradually,while sample B,C,D coatings changes little. But the sample B with low shear stress of ice detachment.Vinyl terminated trifluoropropylmethylsiloxan,dime-thylsiloxane copolymer(VTTS)was added into sample B coating formula,we find that it has higher the contact angle and low shear stress of ice detachment when its content isω(VTTS)=20%.At last,we tested the shear stress of ice detachment for it,with the prolong of frozen time and the decreases of frozen temperature,the shear stresses of ice detachment increase gradually,we give the better de-icing time and temperature at the end of the paper.
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