產(chǎn)品展廳
|
Vespel CP-0842 PI DuPont 杜邦
- 品牌：DuPont 杜邦
- 價格： ￥13.7/千克
- 發(fā)布日期： 2024-08-09
- 更新日期： 2024-11-22
產(chǎn)品詳請
| 品牌 | DuPont 杜邦 |
| 貨號 | |
| 用途 | 杜邦? Vespel? CP 部件提供一系列纖維或織物增強復(fù)合材料,可在磨損和強度至關(guān)重要的情況下滿足一系列獨特的設(shè)計需求。 復(fù)合材料部件可以作為管夾中鋁或鈦的替代品。耐磨條是“自潤滑”的。通常,CP 零件用于飛機襯套、耐磨墊、墊圈、保險杠和密封件。 |
| 牌號 | Vespel CP-0842 |
| 型號 | Vespel CP-0842 |
| 品名 | 聚酰亞胺類 |
| 包裝規(guī)格 | 板、棒、管、方塊、長條、圓盤、環(huán)、圓球和定制機加工制件 |
| 外形尺寸 | 板、棒、管、方塊、長條、圓盤、環(huán)、圓球和定制機加工制件 |
| 生產(chǎn)企業(yè) | DuPont 杜邦 |
| 是否進口 |
Vespel 是杜邦公司生產(chǎn)的一系列耐用高性能聚酰亞胺基塑料的商標(biāo)。
特點和應(yīng)用
Vespel 主要用于航空航天、半導(dǎo)體和運輸技術(shù)。它結(jié)合了耐熱性、潤滑性、尺寸穩(wěn)定性、耐化學(xué)性和抗蠕變性,可用于惡劣和 的環(huán)境條件。
與大多數(shù)塑料不同,即使在高溫下也不會產(chǎn)生明顯的釋氣,這使得它可用于輕質(zhì)隔熱罩和坩堝支撐。它在真空應(yīng)用中也表現(xiàn)良好,低至極低的低溫。然而,Vespel 往往會吸收少量的水,從而導(dǎo)致放置在真空中的泵時間更長。
盡管在這些特性中,有些聚合物都超過了聚酰亞胺,但它們的結(jié)合是 Vespel 的主要優(yōu)勢。
熱物理性質(zhì)
Vespel 通常用作測試熱絕緣體的導(dǎo)熱性參考材料,因為它具有高再現(xiàn)性和熱物理性能的一致性。例如,它可以承受高達(dá) 300 °C 的反復(fù)加熱,而不會改變其熱性能和機械性能。已經(jīng)發(fā)布了大量測量的熱擴散率、比熱容和推導(dǎo)密度的表格,這些表格都是溫度的函數(shù)。
磁性
Vespel 用于 NMR 波譜的高分辨率探針,因為它的體積磁化率(Vespel SP-1 在 21.8 °C 時為 -9.02 ± 0.25×10?6[5])接近室溫下的水(20 °C 時為 -9.03×10?6 [6]) 負(fù)值表示兩種物質(zhì)都是抗磁性的.將NMR樣品周圍材料的體積磁化率與溶劑的體積磁化率相匹配,可以減少磁共振線的磁化率展寬。
Vespel is the trademark of a range of durable high-performance polyimide-based plastics made by DuPont.[1][2]
Characteristics and applications
[edit]
Vespel is mostly used in aerospace, semiconductor, and transportation technology. It combines heat resistance, lubricity, dimensional stability, chemical resistance, and creep resistance, and can be used in hostile and extreme environmental conditions.
Unlike most plastics,[3] it does not produce significant outgassing even at high temperatures, which makes it useful for lightweight heat shields and crucible support. It also performs well in vacuum applications,[4] down to extremely low cryogenic temperatures. However, Vespel tends to absorb a small amount of water, resulting in longer pump time while placed in a vacuum.
Although there are polymers surpassing polyimide in each of these properties, the combination of them is the main advantage of Vespel.
Thermophysical properties
[edit]
Vespel is commonly used as a thermal conductivity reference material for testing thermal insulators, because of high reproducibility and consistency of its thermophysical properties. For example, it can withstand repeated heating up to 300 °C without altering its thermal and mechanical properties.[citation needed] Extensive tables of measured thermal diffusivity, specific heat capacity, and derived density, all as functions of temperature, have been published.[citation needed]
Magnetic properties
[edit]
Vespel is used in high-resolution probes for NMR spectroscopy because its volume magnetic susceptibility (?9.02 ± 0.25×10?6 for Vespel SP-1 at 21.8 °C[5]) is close to that of water at room temperature (?9.03×10?6 at 20 °C [6]) Negative values indicate that both substances are diamagnetic. Matching volume magnetic susceptibilities of materials surrounding NMR sample to that of the solvent can reduce susceptibility broadening of magnetic resonance lines.
Processing for manufacturing applications
[edit]
Vespel can be processed by direct forming (DF) and isostatic molding (basic shapes – plates, rods and tubes). For prototype quantities, basic shapes are typically used for cost efficiency since tooling is quite expensive for DF parts. For large scale CNC production, DF parts are often used to reduce per part costs, at the expense of material properties which are inferior to those of isostatically produced basic shapes.[7]
Types
[edit]
For different applications, special formulations are blended/compounded. Shapes are produced by three standard processes:
compression molding (for plates and rings);
isostatic molding (for rods); and
direct forming (for small size parts produced in large volumes).
Direct-formed parts have lower performance characteristics than parts that have been machined from compression-molded or isostatic shapes. Isostatic shapes have isotropic physical properties, whereas direct formed and compression molded shapes exhibit anisotropic physical properties.
Some examples of standard polyimide compounds are:
SP-1 virgin polyimideprovides operating temperatures from cryogenic to 300 °C (570 °F), high plasma resistance, as well as a UL rating for minimal electrical and thermal conductivity. This is the unfilled base polyimide resin. It also provides high physical strength and maximal elongation, and the best electrical and thermal insulation values. Example: Vespel SP-1.15% graphite by weight, SP-21added to the base resin for increased wear resistance and reduced friction in applications such as plain bearings, thrust washers, seal rings, slide blocks and other wear applications. This compound has the best mechanical properties of the graphite-filled grades, but lower than the virgin grade. Example: Vespel SP-21.40% graphite by weight, SP-22for enhanced wear resistance, lower friction, improved dimensional stability (low coefficient of thermal expansion), and stability against oxidation. Example: Vespel SP-22.10% PTFE and 15% graphite by weight, SP-211added to the base resin for the lowest coefficient of friction over a wide range of operating conditions. It also has excellent wear resistance up to 149 °C (300 °F). Typical applications include sliding or linear bearings as well as many wear and friction uses listed above. Example: Vespel SP-211.15% moly-filled (molybdenum disulfide solid lubricant), SP-3for wear and friction resistance in vacuum and other moisture-free environments where graphite actually becomes abrasive. Typical applications include seals, plain bearings, gears, and other wear surfaces in outer space, ultra-high vacuum or dry gas applications. Example: Vespel SP-3.
Material properties data
[edit]
Material properties of Vespel[8] (produced by isostatic molding and machining)
Property Units Test
condition SP-1
(unfilled) SP-21
(15% graphite) SP-22
(40% graphite) SP-211
(10% PTFE,
15% graphite) SP-3
(15% MoS
2)
Specific gravity dimensionless 1.43 1.51 1.65 1.55 1.60
Thermal expansion
coefficient 10?6/K 211–296 K 45 34 27 [9]
296–573 K 54 49 38 54 52
Thermal conductivity W/mK at 313 K 0.35 0.87 1.73 0.76 0.47
Volume resistivity Ω·m at 296 K 1014–1015 1012–1013
Dielectric constant dimensionless at 100 Hz 3.62 13.53
at 10 kHz 3.64 13.28
at 1 MHz 3.55 13.71
性能優(yōu)勢
Vespel® 發(fā)動機機油系統(tǒng)密封件
杜邦™ Kalrez® O 形圈、墊圈和定制密封件可承受噴氣燃料、發(fā)動機潤滑油、液壓油、火箭推進劑和氧化劑的侵蝕。
動力運動車輛
杜邦™ Vespel® 離合器組件具有韌性、高摩擦下的低磨損和抗沖擊性,使其成為全地形車、摩托車等的理想選擇。
飛機發(fā)動機短艙設(shè)計
杜邦™ Vespel® 具有久經(jīng)考驗的剪切強度、抗沖擊性、輕量化和高耐熱性,可提高飛機發(fā)動機短艙性能。
傳動系統(tǒng)組件
高性能 Vespel® 傳動系統(tǒng)組件有助于控制摩擦、限制磨損并降低卡死風(fēng)險
特點和應(yīng)用
Vespel 主要用于航空航天、半導(dǎo)體和運輸技術(shù)。它結(jié)合了耐熱性、潤滑性、尺寸穩(wěn)定性、耐化學(xué)性和抗蠕變性,可用于惡劣和 的環(huán)境條件。
與大多數(shù)塑料不同,即使在高溫下也不會產(chǎn)生明顯的釋氣,這使得它可用于輕質(zhì)隔熱罩和坩堝支撐。它在真空應(yīng)用中也表現(xiàn)良好,低至極低的低溫。然而,Vespel 往往會吸收少量的水,從而導(dǎo)致放置在真空中的泵時間更長。
盡管在這些特性中,有些聚合物都超過了聚酰亞胺,但它們的結(jié)合是 Vespel 的主要優(yōu)勢。
熱物理性質(zhì)
Vespel 通常用作測試熱絕緣體的導(dǎo)熱性參考材料,因為它具有高再現(xiàn)性和熱物理性能的一致性。例如,它可以承受高達(dá) 300 °C 的反復(fù)加熱,而不會改變其熱性能和機械性能。已經(jīng)發(fā)布了大量測量的熱擴散率、比熱容和推導(dǎo)密度的表格,這些表格都是溫度的函數(shù)。
磁性
Vespel 用于 NMR 波譜的高分辨率探針,因為它的體積磁化率(Vespel SP-1 在 21.8 °C 時為 -9.02 ± 0.25×10?6[5])接近室溫下的水(20 °C 時為 -9.03×10?6 [6]) 負(fù)值表示兩種物質(zhì)都是抗磁性的.將NMR樣品周圍材料的體積磁化率與溶劑的體積磁化率相匹配,可以減少磁共振線的磁化率展寬。
Vespel is the trademark of a range of durable high-performance polyimide-based plastics made by DuPont.[1][2]
Characteristics and applications
[edit]
Vespel is mostly used in aerospace, semiconductor, and transportation technology. It combines heat resistance, lubricity, dimensional stability, chemical resistance, and creep resistance, and can be used in hostile and extreme environmental conditions.
Unlike most plastics,[3] it does not produce significant outgassing even at high temperatures, which makes it useful for lightweight heat shields and crucible support. It also performs well in vacuum applications,[4] down to extremely low cryogenic temperatures. However, Vespel tends to absorb a small amount of water, resulting in longer pump time while placed in a vacuum.
Although there are polymers surpassing polyimide in each of these properties, the combination of them is the main advantage of Vespel.
Thermophysical properties
[edit]
Vespel is commonly used as a thermal conductivity reference material for testing thermal insulators, because of high reproducibility and consistency of its thermophysical properties. For example, it can withstand repeated heating up to 300 °C without altering its thermal and mechanical properties.[citation needed] Extensive tables of measured thermal diffusivity, specific heat capacity, and derived density, all as functions of temperature, have been published.[citation needed]
Magnetic properties
[edit]
Vespel is used in high-resolution probes for NMR spectroscopy because its volume magnetic susceptibility (?9.02 ± 0.25×10?6 for Vespel SP-1 at 21.8 °C[5]) is close to that of water at room temperature (?9.03×10?6 at 20 °C [6]) Negative values indicate that both substances are diamagnetic. Matching volume magnetic susceptibilities of materials surrounding NMR sample to that of the solvent can reduce susceptibility broadening of magnetic resonance lines.
Processing for manufacturing applications
[edit]
Vespel can be processed by direct forming (DF) and isostatic molding (basic shapes – plates, rods and tubes). For prototype quantities, basic shapes are typically used for cost efficiency since tooling is quite expensive for DF parts. For large scale CNC production, DF parts are often used to reduce per part costs, at the expense of material properties which are inferior to those of isostatically produced basic shapes.[7]
Types
[edit]
For different applications, special formulations are blended/compounded. Shapes are produced by three standard processes:
compression molding (for plates and rings);
isostatic molding (for rods); and
direct forming (for small size parts produced in large volumes).
Direct-formed parts have lower performance characteristics than parts that have been machined from compression-molded or isostatic shapes. Isostatic shapes have isotropic physical properties, whereas direct formed and compression molded shapes exhibit anisotropic physical properties.
Some examples of standard polyimide compounds are:
SP-1 virgin polyimideprovides operating temperatures from cryogenic to 300 °C (570 °F), high plasma resistance, as well as a UL rating for minimal electrical and thermal conductivity. This is the unfilled base polyimide resin. It also provides high physical strength and maximal elongation, and the best electrical and thermal insulation values. Example: Vespel SP-1.15% graphite by weight, SP-21added to the base resin for increased wear resistance and reduced friction in applications such as plain bearings, thrust washers, seal rings, slide blocks and other wear applications. This compound has the best mechanical properties of the graphite-filled grades, but lower than the virgin grade. Example: Vespel SP-21.40% graphite by weight, SP-22for enhanced wear resistance, lower friction, improved dimensional stability (low coefficient of thermal expansion), and stability against oxidation. Example: Vespel SP-22.10% PTFE and 15% graphite by weight, SP-211added to the base resin for the lowest coefficient of friction over a wide range of operating conditions. It also has excellent wear resistance up to 149 °C (300 °F). Typical applications include sliding or linear bearings as well as many wear and friction uses listed above. Example: Vespel SP-211.15% moly-filled (molybdenum disulfide solid lubricant), SP-3for wear and friction resistance in vacuum and other moisture-free environments where graphite actually becomes abrasive. Typical applications include seals, plain bearings, gears, and other wear surfaces in outer space, ultra-high vacuum or dry gas applications. Example: Vespel SP-3.
Material properties data
[edit]
Material properties of Vespel[8] (produced by isostatic molding and machining)
Property Units Test
condition SP-1
(unfilled) SP-21
(15% graphite) SP-22
(40% graphite) SP-211
(10% PTFE,
15% graphite) SP-3
(15% MoS
2)
Specific gravity dimensionless 1.43 1.51 1.65 1.55 1.60
Thermal expansion
coefficient 10?6/K 211–296 K 45 34 27 [9]
296–573 K 54 49 38 54 52
Thermal conductivity W/mK at 313 K 0.35 0.87 1.73 0.76 0.47
Volume resistivity Ω·m at 296 K 1014–1015 1012–1013
Dielectric constant dimensionless at 100 Hz 3.62 13.53
at 10 kHz 3.64 13.28
at 1 MHz 3.55 13.71
性能優(yōu)勢
Vespel® 發(fā)動機機油系統(tǒng)密封件
杜邦™ Kalrez® O 形圈、墊圈和定制密封件可承受噴氣燃料、發(fā)動機潤滑油、液壓油、火箭推進劑和氧化劑的侵蝕。
動力運動車輛
杜邦™ Vespel® 離合器組件具有韌性、高摩擦下的低磨損和抗沖擊性,使其成為全地形車、摩托車等的理想選擇。
飛機發(fā)動機短艙設(shè)計
杜邦™ Vespel® 具有久經(jīng)考驗的剪切強度、抗沖擊性、輕量化和高耐熱性,可提高飛機發(fā)動機短艙性能。
傳動系統(tǒng)組件
高性能 Vespel® 傳動系統(tǒng)組件有助于控制摩擦、限制磨損并降低卡死風(fēng)險
