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Merck

430935

Sigma-Aldrich

聚四氟乙烯

powder (free-flowing), 1 μm particle size

别名:

PTFE, 含氟聚合物

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5 G
$103.00
100 G
$343.00

$103.00


国内现货,预计发货时间2025年5月16日详情


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选择尺寸

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5 G
$103.00
100 G
$343.00

About This Item

线性分子式:
(CF2CF2)n
CAS号:
MDL编号:
UNSPSC代码:
12162002
PubChem化学物质编号:
NACRES:
NA.23

$103.00


国内现货,预计发货时间2025年5月16日详情


Request a Bulk Order

表单

powder (free-flowing)

质量水平

粒径

1 μm

转变温度

Tm 321 °C

密度

2.15 g/mL at 25 °C

SMILES字符串

F\C(F)=C(\F)F

InChI key

BFKJFAAPBSQJPD-UHFFFAOYSA-N

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一般描述

聚(四氟乙烯)是一种含氟聚合物,商业上称为 PTFE。其性能包括高热稳定性、优良的耐化学性、低介电常数和低表面能。它是一种疏水性聚合物,主要用于金属表面的保护涂层。[1][2]

应用

惰性润滑剂。

适用性

摩擦系数小,临界表面能低,防粘性优异。

储存分类代码

11 - Combustible Solids

WGK

WGK 3

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

Eyeshields, Gloves, type N95 (US)


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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The properties of poly (tetrafluoroethylene)(PTFE) in compression
Rae PJ and Dattelbaum DM
Polymer, 45(22), 7615-7625 (2004)
Plastics Materials (2012)
Jun Zhang et al.
Analytical chemistry, 92(17), 11558-11564 (2020-06-26)
Floating cancer cells can survive the programmed death anoikis process after detaching from the extracellular matrix for the anchorage-dependent cells. Purification of viable floating cancer cells is essential for many biomedical studies, such as drug screening and cancer model development.
René R E Steendam et al.
Nature communications, 5, 5543-5543 (2014-11-22)
The synthesis of enantiopure molecules from achiral precursors without the need for pre-existing chirality is a major challenge associated with the origin of life. We here show that an enantiopure product can be obtained from achiral starting materials in a
Johannes Lammer et al.
Journal of the American College of Cardiology, 62(15), 1320-1327 (2013-07-09)
The hypothesis that endovascular treatment with covered stents has equal risks but higher efficacy than bare-metal stents (BMS) in long femoropopliteal artery disease was tested. Although endovascular treatment of short superficial femoral artery lesions revealed excellent results, efficacy in long

商品

Polymer electrolyte membrane (PEM) fuel cells offer high efficiency and low-temperature operation, reducing oil use in light-duty vehicle transportation.

聚合物电解质膜(PEM)燃料电池可代替轻型车辆的内燃机,减少运输业石油消耗。PEM燃料电池运行效率高,并且可以在低温下运行。

Questions

1–4 of 4 Questions  
  1. What is the molecular weight of this product?

    1 answer
    1. The molecular weight of this product is not determined.

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  3. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  4. Can this product be used as a binder for manufacturing dry process battery electrodes?

    1 answer
    1. No, this product is PTFE in powder form. Generally, PTFE emulsion is commonly used as a binder for battery electrodes, such as 665800.
      Link: https://www.sigmaaldrich.com/product/aldrich/665800

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