The formula of the extrusion stock which can resist transformer oil was studied so as to solve the problems such as the unsteady performance of the vulcanizate adaptable transformer,the incompetent properties of 45~# transformer oil resistant and the unsatisfied extrusion demand of the stock.

針對(duì)變壓器用膠料硫化膠性能不穩(wěn)定、耐45#變壓器油性能不達(dá)標(biāo)及混煉膠料不能滿(mǎn)足后續(xù)壓出工藝生產(chǎn)要求等問(wèn)題,研制了一種以軟丁腈N41為主體材料,采用AB型并用促進(jìn)劑、4010NA為防老劑、結(jié)構(gòu)度較高的N539碳黑為補(bǔ)強(qiáng)填充劑的耐45#變壓器油的壓出膠料新配方。

This paper has presented a new type of ventilation,namely,forced-out ventilation.

文章提出一種新的布置方式,即壓出式。

At the same time,the improving measures of cutter head,pneumatically coming out of soil,reducing friction and so on were introduced emphatically.

結(jié)合具體工程實(shí)例介紹了氣動(dòng)(捶擊式)小口徑頂管技術(shù)的原理及施工工藝,分析了氣動(dòng)小口徑頂管施工管材的選擇問(wèn)題,著重介紹了切土頭、氣壓出土、減小摩擦力等技術(shù)的改進(jìn)措施。