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產品詳請
| 品牌 | Qnity |
| 貨號 | |
| 用途 | 航空航天 |
| 牌號 | PI Kapton 140GS |
| 型號 | Kapton 140GS |
| 品名 | PI |
| 包裝規(guī)格 | 卷 |
| 外形尺寸 | 薄膜 |
| 廠家 | Qnity(Dupont 杜邦) |
| 是否進口 |
極高的多功能性和熱性能帶來了無限的潛力
從航天任務相機中的電路到下一代光伏電池,Kapton®聚酰亞胺薄膜正在推動非凡的新設計可能性真正實現(xiàn)。
對于 熱量和振動的應用,設計師依賴Kapton®,因為它能夠在最惡劣的條件下保持獨特的機械性能組合。
Kapton®聚酰亞胺薄膜在45年來一直保持行業(yè)標準,在高性能、可靠性和耐用性方面保持著標準,具有獨特的電氣、熱能、化學和機械性能組合,能夠承受 溫度、振動及其他嚴苛環(huán)境。
Kapton is a polyimide film used in flexible printed circuits (flexible electronics) and space blankets, which are used on spacecraft, satellites, and various space instruments. Invented by the DuPont Corporation in the 1960s, Kapton remains stable across a wide range of temperatures, from 4 to 673 K (?269 to +400 °C). Kapton is used in electronics manufacturing and space applications, with x-ray equipment, and in 3D printing applications. Its favorable thermal properties and outgassing characteristics result in its regular use in cryogenic applications and in high vacuum environments.
History
Kapton was invented by DuPont in the 1960s. As of November 2025, Kapton is manufactured by Qnity Electronics, a spinoff of DuPont.
The name Kapton is a registered trademark of E. I. du Pont de Nemours and Company.
Chemistry and variants
Kapton synthesis is an example of the use of a dianhydride in step polymerization. The intermediate polymer, known as a poly(amic acid), is soluble because of strong hydrogen bonds to the polar solvents usually employed in the reaction. The ring closure is carried out at high temperatures of 470–570 K (200–300 °C).
The chemical name for Kapton K and HN is poly (4,4'-oxydiphenylene-pyromellitimide). It is produced from the condensation of pyromellitic dianhydride (PMDA) and 4,4'-oxydiphenylamine (ODA).
Kapton E is a mix of two dianhydrides, PMDA and biphenyltetracarboxylic acid dianhydride (BPDA), and two diamines, ODA and p-phenylenediamine (PPD). The BPDA component adds greater dimensional stability and flatness in flexible circuitry applications. Kapton E offers reduced coefficient of thermal expansion (CTE), reduced moisture absorption, and reduced coefficient of hygroscopic expansion (CHE) compared to Kapton H.
Characteristics
In isolation, Kapton remains stable across a wide range of temperatures, from 4 to 673 K (?269 to +400 °C).[5][6]
The thermal conductivity of Kapton at temperatures from 0.5 to 5 Kelvin is rather high for such low temperatures, κ = 4.638×10?3 T0.5678 W·m?1·K?1.
Kapton insulation ages poorly: an FAA study shows degradation in hot, humid environments[8] or in the presence of seawater. It was found to have very poor resistance to mechanical wear, mainly abrasion within cable harnesses due to aircraft movement. Many aircraft models have had to undergo extensive rewiring modifications—sometimes completely replacing all the Kapton-insulated wiring—because of short circuits caused by the faulty insulation. Kapton-wire degradation and chafing due to vibration and heat has been implicated in multiple crashes of both fixed wing and rotary wing aircraft, with loss of life. The New York Times, citing a NASA OIG document, reported in 2005 that Kapton-insulated cables on the Space Shuttle "tended to break down over time, causing short circuits and, potentially, fires." The STS-93 mission saw electrical shorts on Kapton insulation disable two engine controllers and nearly cause catastrophe.
Usage
Kapton tapes, three rolls of different widths
Electronics manufacturing
Kapton tape (yellow) used to insulate the leads of a battery cell in a bluetooth headset
Due to its large range of temperature stability and its electrical isolation ability, Kapton tape is usually used in electronic manufacturing as an insulation and protection layer on electrostatic-sensitive and fragile components. As it can sustain the temperature needed for a reflow soldering operation, its protection is available throughout the whole production process, and Kapton is often still present in the final consumer product.
Spacecraft
Aluminized Kapton thermal cover was used on the Ultra Heavy Cosmic Ray Experiment.
The descent stage of the Apollo Lunar Module, and the bottom of the ascent stage surrounding the ascent engine, were covered in blankets of aluminized Kapton foil to provide thermal insulation. During the return journey from the Moon, Apollo 11 astronaut Neil Armstrong commented that during the launch of the Lunar Module Eagle ascent stage, he could see "Kapton and other parts of the LM staging scattering all around the area for great distances."
Test unit of the James Webb Space Telescope sunshield, made of aluminized Kapton
The NASA Jet Propulsion Laboratory has considered Kapton as a good plastic support for solar sails because of its durability in the space environment.
NASA's New Horizons spacecraft used Kapton in an innovative "Thermos bottle" insulation design to keep the craft operating between 283 and 303 K (10 and 30 °C) throughout its more than nine-year, 5-terametre (33-astronomical-unit) journey to rendezvous with the dwarf planet Pluto on 14 July 2015. The main body is covered in lightweight, gold-colored, multilayered thermal insulation which holds in heat from operating electronics to keep the spacecraft warm. The thermal blanketing of 18 layers of Dacron mesh cloth sandwiched between aluminized Mylar and Kapton film also helped to protect the craft from micrometeorites.
The James Webb Space Telescope sunshield is made of five Kapton E sheets coated with aluminum and doped silicon to reflect heat away from the spacecraft body.
The crew aboard the International Space Station used Kapton tape to temporarily repair a slow leak in a Soyuz spacecraft attached to the Russian segment of the orbital complex in August 2018.[16] It was used again in October 2020 to temporarily seal a leak in the transfer chamber of the Zvezda Service Module of the ISS.
X-rays
Kapton is also commonly used as a material for windows used with all kinds of X-ray sources (synchrotron beam-lines and X-ray tubes) and X-ray detectors. Its high mechanical and thermal stability as well as high transmittance of X-rays make it the preferred material. It is also relatively insensitive to radiation damage.
3D printing
Kapton and ABS adhere to each other very well, which has led to widespread use of Kapton as a build surface for 3D printers. Kapton is laid down on a flat surface and the ABS is extruded onto the Kapton surface. The ABS part being printed will not detach from the build platform as it cools and shrinks, a common cause of print failure by warping of the part.A more durable alternative is to use a polyetherimide surface.
Researchers have devised a method to 3D-print polyimide material including Kapton. The polyamic acid precursor to Kapton is mixed with an acrylate cross linker and photoinitiator that can form a gel when exposed to ultraviolet light during 3D printing. Subsequent heating of the 3D printed part up to 400 °C removes the sacrificial crosslinks and imidizes the part forming Kapton with a 10D printed geometry.
Others
Kapton's relatively high thermal conductivity at very low temperatures, together with its good dielectric qualities and its availability as thin sheets, have made it a favorite material in cryogenics, as it provides electrical insulation at low thermal gradients.
Kapton is regularly used as an insulator in ultra-high-vacuum environments due to its low outgassing rate.
Kapton-insulated electrical wiring has been widely used in civil and military aircraft because it is lighter than other insulators and has good insulating and temperature characteristics.
從航天任務相機中的電路到下一代光伏電池,Kapton®聚酰亞胺薄膜正在推動非凡的新設計可能性真正實現(xiàn)。
對于 熱量和振動的應用,設計師依賴Kapton®,因為它能夠在最惡劣的條件下保持獨特的機械性能組合。
Kapton®聚酰亞胺薄膜在45年來一直保持行業(yè)標準,在高性能、可靠性和耐用性方面保持著標準,具有獨特的電氣、熱能、化學和機械性能組合,能夠承受 溫度、振動及其他嚴苛環(huán)境。
杜邦™ Kapton® 薄膜成型
聚酰亞胺薄膜
概述
杜邦™ Kapton® 是一種用途廣泛的工程薄膜，
廣泛應用于眾多行業(yè)的數(shù)百種工業(yè)和技術應用中。
盡管 Kapton® 薄膜可以輕松沖壓成各種零件，但由于其特殊的性能，
成型卻更具挑戰(zhàn)性。
多年來，制造商一直認為 Kapton® 薄膜無法成功成型。
為了回應眾多市場咨詢，杜邦
開展了專項實驗室研究，以更好地了解 Kapton® 薄膜的成型工藝。
本技術文檔將對那些對成型方法感興趣但經驗不足的人員有所幫助，
尤其是在揚聲器、汽車、暖通空調等行業(yè)，
這些行業(yè)對 Kapton® 薄膜成型零件的需求量很大。
使用杜邦™ Kapton® 進行成型
文檔目的
本文檔提供 Kapton® HN 和 JP 薄膜成型的基本信息和具體指南。
雖然這些信息最初是為杜邦公司內部使用而編寫的，但由于市場對此主題的濃厚興趣，
現(xiàn)將其公開。
在接下來的頁面中，
將詳細介紹影響成型工藝的若干問題。
設備的選擇由用戶自行決定。
在查看以下工藝步驟時，
請注意，所有數(shù)據(jù)均在實驗室環(huán)境下開發(fā)。
雖然本文涵蓋了成型的許多方面，
但并非旨在提供完整或全面的指南。
隨著研究的繼續(xù)，
數(shù)據(jù)將不斷更新并發(fā)布。
注：本出版物中包含的信息是杜邦公司的財產，
僅供杜邦客戶使用。
1. 薄膜選擇
所有杜邦™ Kapton® 薄膜均可成功成型，但具體薄膜類型的選擇應基于客戶的預期應用。產品系列包含兩種基礎薄膜：Kapton® HN（結晶型聚酰亞胺）和 Kapton® JP（非晶型聚酰亞胺）。兩者均具有良好的成型性和耐大多數(shù)化學品腐蝕性。然而，如果應用需要更高的耐化學腐蝕性，則應考慮杜邦 FN 系列薄膜。此外，還有導電薄膜（Kapton® RS 系列）和導熱薄膜（Kapton® MT 系列）。除這些商業(yè)產品外，杜邦目前正在開發(fā)定制可成型薄膜。
由于制造工藝的不同，Kapton® 薄膜的“成型性”也存在差異。通常認為 JP 薄膜比 HN 薄膜更容易成型。這或許屬實，但HN薄膜在穩(wěn)定性方面略勝一籌。盡管JP薄膜和HN薄膜之間的穩(wěn)定性差異微乎其微（兩者均具有很高的穩(wěn)定性），但在需要 穩(wěn)定性性能的應用中，仍應考慮這兩種薄膜。
Kapton is a polyimide film used in flexible printed circuits (flexible electronics) and space blankets, which are used on spacecraft, satellites, and various space instruments. Invented by the DuPont Corporation in the 1960s, Kapton remains stable across a wide range of temperatures, from 4 to 673 K (?269 to +400 °C). Kapton is used in electronics manufacturing and space applications, with x-ray equipment, and in 3D printing applications. Its favorable thermal properties and outgassing characteristics result in its regular use in cryogenic applications and in high vacuum environments.
History
Kapton was invented by DuPont in the 1960s. As of November 2025, Kapton is manufactured by Qnity Electronics, a spinoff of DuPont.
The name Kapton is a registered trademark of E. I. du Pont de Nemours and Company.
Chemistry and variants
Kapton synthesis is an example of the use of a dianhydride in step polymerization. The intermediate polymer, known as a poly(amic acid), is soluble because of strong hydrogen bonds to the polar solvents usually employed in the reaction. The ring closure is carried out at high temperatures of 470–570 K (200–300 °C).
The chemical name for Kapton K and HN is poly (4,4'-oxydiphenylene-pyromellitimide). It is produced from the condensation of pyromellitic dianhydride (PMDA) and 4,4'-oxydiphenylamine (ODA).
Kapton E is a mix of two dianhydrides, PMDA and biphenyltetracarboxylic acid dianhydride (BPDA), and two diamines, ODA and p-phenylenediamine (PPD). The BPDA component adds greater dimensional stability and flatness in flexible circuitry applications. Kapton E offers reduced coefficient of thermal expansion (CTE), reduced moisture absorption, and reduced coefficient of hygroscopic expansion (CHE) compared to Kapton H.
Characteristics
In isolation, Kapton remains stable across a wide range of temperatures, from 4 to 673 K (?269 to +400 °C).[5][6]
The thermal conductivity of Kapton at temperatures from 0.5 to 5 Kelvin is rather high for such low temperatures, κ = 4.638×10?3 T0.5678 W·m?1·K?1.
Kapton insulation ages poorly: an FAA study shows degradation in hot, humid environments[8] or in the presence of seawater. It was found to have very poor resistance to mechanical wear, mainly abrasion within cable harnesses due to aircraft movement. Many aircraft models have had to undergo extensive rewiring modifications—sometimes completely replacing all the Kapton-insulated wiring—because of short circuits caused by the faulty insulation. Kapton-wire degradation and chafing due to vibration and heat has been implicated in multiple crashes of both fixed wing and rotary wing aircraft, with loss of life. The New York Times, citing a NASA OIG document, reported in 2005 that Kapton-insulated cables on the Space Shuttle "tended to break down over time, causing short circuits and, potentially, fires." The STS-93 mission saw electrical shorts on Kapton insulation disable two engine controllers and nearly cause catastrophe.
Usage
Kapton tapes, three rolls of different widths
Electronics manufacturing
Kapton tape (yellow) used to insulate the leads of a battery cell in a bluetooth headset
Due to its large range of temperature stability and its electrical isolation ability, Kapton tape is usually used in electronic manufacturing as an insulation and protection layer on electrostatic-sensitive and fragile components. As it can sustain the temperature needed for a reflow soldering operation, its protection is available throughout the whole production process, and Kapton is often still present in the final consumer product.
Spacecraft
Aluminized Kapton thermal cover was used on the Ultra Heavy Cosmic Ray Experiment.
The descent stage of the Apollo Lunar Module, and the bottom of the ascent stage surrounding the ascent engine, were covered in blankets of aluminized Kapton foil to provide thermal insulation. During the return journey from the Moon, Apollo 11 astronaut Neil Armstrong commented that during the launch of the Lunar Module Eagle ascent stage, he could see "Kapton and other parts of the LM staging scattering all around the area for great distances."
Test unit of the James Webb Space Telescope sunshield, made of aluminized Kapton
The NASA Jet Propulsion Laboratory has considered Kapton as a good plastic support for solar sails because of its durability in the space environment.
NASA's New Horizons spacecraft used Kapton in an innovative "Thermos bottle" insulation design to keep the craft operating between 283 and 303 K (10 and 30 °C) throughout its more than nine-year, 5-terametre (33-astronomical-unit) journey to rendezvous with the dwarf planet Pluto on 14 July 2015. The main body is covered in lightweight, gold-colored, multilayered thermal insulation which holds in heat from operating electronics to keep the spacecraft warm. The thermal blanketing of 18 layers of Dacron mesh cloth sandwiched between aluminized Mylar and Kapton film also helped to protect the craft from micrometeorites.
The James Webb Space Telescope sunshield is made of five Kapton E sheets coated with aluminum and doped silicon to reflect heat away from the spacecraft body.
The crew aboard the International Space Station used Kapton tape to temporarily repair a slow leak in a Soyuz spacecraft attached to the Russian segment of the orbital complex in August 2018.[16] It was used again in October 2020 to temporarily seal a leak in the transfer chamber of the Zvezda Service Module of the ISS.
X-rays
Kapton is also commonly used as a material for windows used with all kinds of X-ray sources (synchrotron beam-lines and X-ray tubes) and X-ray detectors. Its high mechanical and thermal stability as well as high transmittance of X-rays make it the preferred material. It is also relatively insensitive to radiation damage.
3D printing
Kapton and ABS adhere to each other very well, which has led to widespread use of Kapton as a build surface for 3D printers. Kapton is laid down on a flat surface and the ABS is extruded onto the Kapton surface. The ABS part being printed will not detach from the build platform as it cools and shrinks, a common cause of print failure by warping of the part.A more durable alternative is to use a polyetherimide surface.
Researchers have devised a method to 3D-print polyimide material including Kapton. The polyamic acid precursor to Kapton is mixed with an acrylate cross linker and photoinitiator that can form a gel when exposed to ultraviolet light during 3D printing. Subsequent heating of the 3D printed part up to 400 °C removes the sacrificial crosslinks and imidizes the part forming Kapton with a 10D printed geometry.
Others
Kapton's relatively high thermal conductivity at very low temperatures, together with its good dielectric qualities and its availability as thin sheets, have made it a favorite material in cryogenics, as it provides electrical insulation at low thermal gradients.
Kapton is regularly used as an insulator in ultra-high-vacuum environments due to its low outgassing rate.
Kapton-insulated electrical wiring has been widely used in civil and military aircraft because it is lighter than other insulators and has good insulating and temperature characteristics.
