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Sealant materials and methods of using thereof

一种密封材料、硬度的技术，应用在密封装置、化学仪器和方法、电缆入口密封装置等方向，能够解决使用困难、耗时、复杂等问题

Inactive Publication Date: 2008-04-23
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional greases typically used in communication cables are expensive and time-consuming to manufacture and difficult and complicated to use

Method used

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  • Sealant materials and methods of using thereof
  • Sealant materials and methods of using thereof
  • Sealant materials and methods of using thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-19

[0068] The sealing materials of Examples 1-19 were prepared according to the following procedure. Tables 1-3 provide the weight percent concentrations of the sealing material components of Examples 1-19. For each sealant, all ingredients except microspheres (if present) were put into 16 oz glass jars with metal foil lined metal lids. A stir bar was added to the jar, which was then sealed and placed in an oven maintained at 150°C for 30 minutes (the sealing material including Semtol oil was placed in an oven maintained at a temperature of 130°C instead of 150°C).

[0069] After 30 minutes, the jar was then moved to an agitated hot plate, where it was heated with agitation until the seal material was substantially homogeneous and had low viscosity. The jar is then removed from the stirring hot plate and the microspheres (if used) are added and stirred into the sealant with a glass stir bar. The sealing material is then cooled and checked for uniformity.

[0070] Table 1

[0...

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Abstract

The present invention is a method of using a sealant material, which includes providing the sealant material, where the sealant material comprises mineral oil, petroleum wax, and a viscosity builder, and where the sealant material exhibits a first hardness. The viscosity builder is selected from a group consisting of polybutene, a styrene-rubber diblock copolymer, an ethylene-propylene oligomer, and combinations thereof. The method also includes applying a shear force to at least a first portion of the sealant material, where the first portion of the sealant material exhibits a second hardness after the shear force is applied, and where the first hardness is at least two times greater than the second hardness.

Description

field of invention [0001] The present invention relates to sealing materials for joints. In particular, the present invention relates to sealing materials having variable rheological properties suitable for protecting telecommunication cables and other circuits against environmental conditions. Background of the invention [0002] Communication cables such as electric cables and optical cables are widely used in various environmental conditions. For example, communication cables may be placed in wet environments or buried underground. In these applications, communication cables need to resist the penetration of water, which can seriously affect the performance of the cables. For example, in electrical cables, water can disrupt the capacitive balance of the conductors, short-circuit the cable, and induce high electrical resistance due to corrosion. Similarly, in fiber optic cables, water can negatively affect the integrity of the fiber optic cable. The effects of moisture...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G15/013C09K3/10H01B3/30C09J191/00C09J123/00
CPCH02G15/003C09K2200/0632C09K2200/0617C09K2200/0447H02G15/013C09K3/10C09K2200/062
Inventor 威廉·V·道尔
Owner 3M INNOVATIVE PROPERTIES CO