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國(guó)際上GCC、NEXANS、CCI、JINRO、PIRELLI等公司生產(chǎn)石油平臺(tái)電纜的廠家,在耐泥漿電纜護(hù)套的性能要求上,基本上均按照NEK606標(biāo)準(zhǔn)考核。主要是在IEC 60092-359 的SHF2型的基礎(chǔ)上,加上了耐泥漿要求,如耐IRM903油,100℃7天,要求抗張強(qiáng)度、斷裂伸長(zhǎng)率、體積膨脹、重量增加均≤30%。我一直在尋求此料,但至盡收獲很小,國(guó)內(nèi)常規(guī)的無(wú)鹵料(無(wú)論輻照交聯(lián)、還是蒸汽硫化)指標(biāo)相距很大,特別是后兩項(xiàng)指標(biāo)。各位理工朋友如果對(duì)這方面有過(guò)研究的,請(qǐng)指點(diǎn)或探討。
[copartner 在 2007-12-19 13:54:39 編輯過(guò)]
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也許我們可以幫到諸位!
NEK606對(duì)于國(guó)內(nèi)的目前的標(biāo)準(zhǔn)來(lái)說(shuō),就是耐油、耐泥漿的要求高一些!
可以通過(guò)干式硅烷交聯(lián)或通過(guò)輻照交聯(lián)以獲得更高的耐溫性能。
DESCRIPTION/FEATURES: Low Smoke Fume Zero Halogen Compound (LSFOH)
APPLICATIONS: Wire & Cable
Physical properties Test method Unit Typical value
Specific density ISO 1183 kg/m3 1510
Melt flow, 150°C , 21,6 kg ISO 1133, (b) g/10min 2,5
Tensile strength IEC 60811-1-1 MPa 9 (12**)
Elongation at break IEC 60811-1-1 % 180(160**)
Tear strength BS 6469:99.1 N/mm 6
Hot pressure test 6h at 115°C IEC 60811-3-1 % 8
Hot pressure test 4h at 125°C IEC 60811-3-1 % 34**
Cold impact at -40°C IEC 60811-1-4 pass
Elongation at break -40°C IEC 60811-1-4 % 40
Air ageing 10d at 120°C
Tensile strength, variation from original % -26 (25**)
Elongation, variation from original % -40 (-16**)
** After Crosslinking
Burning properties Test method Unit Typical value
Oxygen index ISO 4589-2 % 34 *
Flammability temperature index ISO 4589-3 °C 330**
Smoke density – Flaming mode (1mm) ASTM E-662 Ds max -
Smoke density – Non Flaming Mode (1mm) ASTM E-662 Ds max -
Toxicity NES 713 - -
Halogen content IEC 60754-1 - *
Acid Gas Emission IEC 60754-2 -
- pH (min) pH 4.34
- conductivity (max) μScm-1 21.5
*measured on type IV specimen
**measured on type II specimen
Electrical properties Test method Unit Typical value
Dielectric constant at 50 Hz, at 23°C, 50%HR IEC 60250 4.01
Dissipation factor at 50 Hz, at 23°C, 50%HR IEC 60250 0.001
Dissipation factor at 1MHz, at 23°C, 50%HR IEC 60250 0,07
Volume resistivity , at 23°C, 50%HR IEC 60093 W cm 3,2x 1015
Surface resistivity , at 23°C, 50%HR IEC 60093 W 3,0x 1015
Other properties Test method Unit Typical value
Water absorption after 7d at 70°C BS 6724 mg/cm2 1,43
Tensile strength, variation from original % 2 (-5**)
Elongation, variation from original % -45 (-11**)
Oil ageing, IRM 902 oil, 7d at 100°C IEC 60811-2-1
Tensile strength, variation from original % -10 (-8**)
Elongation, variation from original % -21 (-21**)
Oil ageing, IRM 903 oil, 7d at 100°C IEC 60811-2-1
Tensile strength, variation from original % -35 (-28**)
Elongation, variation from original % -40 (-21**)
Mud resistance, oil based, 56d at 70°C IEC60892-4 (NEK606)
Tensile strength, variation from original % -7(-19**)
Elongation, variation from original % -44 (-32**)
** After Crosslinking
Heat shock 1h at 150°C IEC 60811-3-1 Pass
Hardness ISO R 868 Shore D 48
Hardness ISO R 868 Shore A 94
Mooney viscosity, ML (1+4) 140°C DIN 53523 - 58
Shrinkage, 1h at 100°C IEC 60811-1-3 % 0
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這種材料是歐洲的產(chǎn)品,有很多成功案例!
但是 進(jìn)口成本實(shí)在太高 可能要100多元/kg,而在歐洲可能就3、5歐元/kg.
NEK 606里的 耐泥漿試驗(yàn) 對(duì)泥漿的要求有標(biāo)準(zhǔn),不同地區(qū)的泥漿不一樣,挪威的標(biāo)準(zhǔn) 用中國(guó)的泥漿肯定不行。
當(dāng)然 很多廠商的線纜 在耐溫和耐油方面性能還是不好,強(qiáng)度也不高!
阻燃要求反而不高,但這種材料還用MTH +EVA的阻燃機(jī)理!
也就是說(shuō) 我們國(guó)內(nèi)其實(shí)完全可以做這種材料,只是缺乏經(jīng)驗(yàn)可市場(chǎng)!
