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PTFE 7A 美國杜邦，價格合理,誠信經(jīng)營，可全國供貨（廣東省內(nèi)免費送上門）。支持物流，快遞和貨運;支持現(xiàn)金，銀行轉(zhuǎn)賬交易。

東莞市廣業(yè)塑膠原料有限公司專業(yè)銷售原裝進口塑膠原料，原廠原包，假一賠十，本司貨源穩(wěn)定充足，發(fā)貨準時，交期和質(zhì)量均有保障！是專業(yè)塑膠原料供應商！！！可提供COA,SMDS,SGS,COC,UL黃卡和物性表及加工參數(shù)。

PTFE 7A 美國杜邦特性： 

PTFE 7A 美國杜邦                              

PTFE 7A 美國杜邦

PTFE 7A 美國杜邦

PTFE 7A 美國杜邦

PTFE 7A 美國杜邦

PTFE 7A 美國杜邦

PTFE 7A 美國杜邦

PTFE獨特的性能使其在化工、石油、紡織、食品、造紙、醫(yī)學、電子和機械等工業(yè)和海洋作業(yè)領(lǐng)域都有著廣泛的應用。

1、防腐蝕性能的應用

由于橡膠、玻璃、金屬合金等材料在耐腐蝕方面存在缺陷，難以滿足條件苛刻的溫度、壓力和化學介質(zhì)共存的環(huán)境，由此造成的損失相當驚人。而PTFE材料以其卓越的耐腐蝕性能，業(yè)已成為石油、化工、紡織等行業(yè)的主要耐腐蝕材料。其具體應用包括：輸送腐蝕性氣體的輸送管、排氣管、蒸汽管，軋鋼機高壓油管，飛機液壓系統(tǒng)和冷壓系統(tǒng)的高中低壓管道，精餾塔、熱交換器，釜、塔、槽的襯里，閥門等化工設(shè)備。

密封件的性能好壞對整個機器設(shè)備的效率與性能都有很大的影響。PTFE材料具有的耐腐蝕、耐老化、低摩擦系數(shù)及不粘性、耐溫范圍廣、彈性好的特性使其非常適合應用于制造耐腐蝕要求高，使用溫度高于100℃的密封件。如機器、熱交換器、高壓容器、大直徑容器、閥門、泵的槽形法蘭的密封件，玻璃反應鍋、平面法蘭、大直徑法蘭的密封件，軸、活塞桿、閥門桿、蝸輪泵、拉桿的密封件等等。

2、低摩擦性能在載荷方面的應用

由于有的設(shè)備的摩擦部分不宜加油潤滑，比如在潤滑油脂會被溶劑溶解而失效的場合或者造紙、制藥、食品、紡織等工業(yè)領(lǐng)域的產(chǎn)品需要避免潤滑油沾污，這就使填充PTFE材料成為機械設(shè)備零件無油潤滑(直接承受載荷)的最理想材料。這是因為該材料的摩擦系數(shù)是已知固體材料中最低的。其具體用途包括用于化工設(shè)備、造紙機械、農(nóng)業(yè)機械的軸承，用作活塞環(huán)、機床導軌、導向環(huán)；在土木建筑工程廣泛用作橋梁、隧道、鋼結(jié)構(gòu)屋架、大型化工管道、貯槽的支承滑塊，以及用作橋梁支座和架橋轉(zhuǎn)體等。

3、在電子電氣方面的應用

PTFE材料固有的低損耗與小介電常數(shù)使其可做成漆包線，以用于微型電機、熱電偶、控制裝置等；PTFE薄膜是制造電容器、無線電絕緣襯墊、絕緣電纜、馬達及變壓器的理想絕緣材料，也是航空航天等工業(yè)電子部件不可缺少的材料之一；利用氟塑料薄膜對氧氣透過性大，而對水蒸汽的透過性小的這種選擇透過性，可制造氧氣傳感器；利用氟塑料在高溫、高壓下發(fā)生極向電荷偏離現(xiàn)象的特性，可制造麥克風、揚聲器、機器人上的零件等；利用其低折射率的特性，可制造光導纖維。

4、在醫(yī)療醫(yī)藥方面的應用

膨體PTFE材料是純惰性的，具有非常強的生物適應性，不會引起機體的排斥，對人體無生理副作用，可用任何方法消毒，且具有多微孔結(jié)構(gòu)，從而可用于多種康復解決方案，包括用于軟組織再生的人造血管和補片以及用于血管、心臟、普通外科和整形外科的手術(shù)縫合。

5、防粘性能的應用

PTFE材料具有固體材料中最小的表面張力，不粘附任何物質(zhì)，同時還具有耐高低溫優(yōu)良的特性，從而使其在諸如制造不粘鍋的防粘方面的應用非常廣泛。其防粘工藝主要包括兩種：把PTFE部件或薄片安裝在基體上，以及把PTFE涂層或與玻璃復合的漆布經(jīng)過熱收縮而套在基材上。

隨著材料應用技術(shù)的不斷發(fā)展，PTFE材料的三大缺點：冷流性、難焊接性、難熔融加工性正在逐漸被克服，從而使它在光學、電子、醫(yī)學、石油化工輸油防滲等多種領(lǐng)域的應用前景更加廣闊

PTFE 7A 美國杜邦

PTFE (polytetrafluoroethylene)

Performance relative density 2.14 ~ 2.2

    Water absorption (23 ℃, 24h)% <0.01

    Tensile strength MPa 22 ~ 35

    Elongation% 200 ~ 400

    Tensile elastic modulus GPa 400

    Bending elastic modulus MPa 420

    Compression elastic modulus GPa 500

    Notched impact strength J / m 163

    Heat distortion temperature ℃ 0.45MPa 121

        1.82MPa 55

    Linear expansion coefficient 10-5 / ℃ 10

    Flame retardant (UL94) V-0

    Volume resistivity Ω.cm 1017 ~ 1018

    Dielectric constant <2.1

    Dielectric loss tangent <2 × 10-4

    Dielectric strength KV / mm> 17

    Arc resistance s> 300

Features 1. Physical and mechanical properties, PTFE relative density is large, almost no water. Tough and resilient. Has a very small friction factor, showing excellent lubricity. The static friction factor of PTFE is smaller than the dynamic friction factor, and the friction factor remains almost constant from the ultra-low temperature to the melting point. But PTFE hardness is easy to be worn by other materials. If a layer of PTFE film can be formed on the surface of the grinding material, the wear of PTFE can be reduced to a considerable extent.

2. Thermal performance, PTFE thermal stability in the engineering plastics is extremely prominent. At 200 ℃ to the melting point, the decomposition rate is very slow, the decomposition is also very small, heated at 200 ℃ for a month, the decomposition of less than one millionth, can be ignored. PTFE at -250 ℃ is still not brittle Can be used in the -250 ~ 260 ℃ long-term use.

3. Electrical properties, PTFE is a highly non-polar material, with excellent excellent performance, outstanding performance at 0 ℃ above, the dielectric properties do not affect the frequency and temperature, nor the impact of humidity and corrosive gases The The volume resistivity and surface resistivity of PTFE are the highest of all engineering plastics, and even if they are immersed in water for a long period of time, they do not degrade significantly. In 100% relative humidity, the surface resistivity remains the same. When the crystallinity of PTFE is between 50% and 80%, the dielectric strength is almost independent of crystallinity and has the lowest dielectric constant. PTFE is excellent in arc resistance.

4. Chemical resistance, PTFE has excellent chemical stability, almost no erosion of any chemical substances, many strong corrosive, strong oxidizing chemicals, it almost does not work, so there is the name of the plastic king The Only the alkali metal in the molten state can remove the fluorine atoms in the PTFE and make the surface discolored.

5. Other properties, PTFE resistance to atmospheric aging is very prominent, even if exposed to the atmosphere in the long term, the surface will not produce any changes. PTFE flame retardant is also very prominent, it is up to 95% oxygen index, ranking first, flame retardant UL94 V-0 level. Non-sticking is another important feature of PTFE, almost no solid material can not adhere to its surface. But the role of high-energy radiation on it obvious.

Molding / processing molding, extrusion, coating and calendering.

Application of PTFE a series of unique performance, is unmatched by other engineering plastics, therefore, widely used in machinery, electrical appliances, chemical equipment, medical equipment and construction and other fields.

1. Machinery, a large number used in the manufacture of bearings, piston rings, machine tool rails, sealing materials.

2. Electronic appliances, the most important use is to create a variety of wire and cable insulation, such as coaxial RF cables, battery electrodes, battery separator, printed circuit boards, acoustic film, high-precision capacitors.

3. Chemical equipment, such as pipes, valves, heat exchangers and so on.

4. Medical equipment, PTFE heat resistance, no side effects on the biological, from the body erosion and other characteristics, can manufacture a variety of medical equipment, such as skin covering materials, tissue repair materials.

5. Construction, can be used to manufacture bridges, tunnels, steel roof trusses, highways and large storage tanks, such as support sliders.

6. In the automotive industry, the manufacture of automotive power steering equipment seal ring; in the military industry, the right to create the engine internal parts, bushings, electrical connectors, etc .; can also be combined with other fabrics can be made corrosion-resistant Filter bags, waterproof, breathable, windproof and warm warm raincoats, as well as sportswear, mountaineering suits, diving suits and light military tents.

如需了解更多關(guān)于PTFE 7A 美國杜邦及 的詳細信息，歡迎致電聯(lián)系。

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PTFE 7A 美國杜邦