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Anonymous
Anonymous asked in 科學其他:科學 · 1 decade ago

有一個電木的問題

想請問一下大大們:

電木的剪力模數、彈性係數等等的數值………

1 Answer

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  • 1 decade ago
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    彎曲強度→120-180(100-150)MPa、

    壓縮強度→垂直層250-320(200-250)MPa

    水平層170-210(100-150)MPa、

    主要材料→酚醛樹脂、

    主要母材→牛皮紙(綿布)、

    表面電阻→5.0×10的十次方(9.0×10的八次方) 參考:http://tw.knowledge.yahoo.com/question/question?qi...

    「電木」是一種人造合成化學物質,算是一種塑膠產品,可做燈頭、開關、插座、電路板等的材料。特性是不吸水、不導電、耐高溫、強度高,因為多用在電器上,所以叫做「電木」。

    電木是用粉狀的酚醛樹脂,加進鋸木屑、石棉或陶土等混合後,在高溫下用模子壓出成品,其中酚醛樹脂是世界第一個人工合成的樹脂。參考:http://tw.knowledge.yahoo.com/question/?qid=100504...

    電木剪力要看你形狀跟大小,一般來說數值如下:

    比重g/cm:1.35~1.40

    吸水率%:0.65

    抗拉:800~1300

    彈力強度:1200~2000

    硬度Rockwell hardness:30~40

    衝擊強度:30~43

    磨擦係數:0.07-0.11

    耐熱度:140度c

    熱膨脹係數10-5 /0 :2.5-2.6

    介電破壞強度Dielectric breakdown strengths KV / mm:9-16

    電解係數Coeffcient of volume resistance ohm-cm:10的9次方-10的12次方

    參考:http://www.hwayu.com.tw/down.html

    Source(s): 如內容所述
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