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Termite-resistant cable sheath polyamide composition, cable sheath, production method and use

A polyamide composition, aliphatic polyamide technology, applied in the sheathing of cables and optical fiber cables, termite resistance, single-layer or multi-layer cable sheathing, can solve the problems of expensive materials and shortage of production, Easy to process, easy to extrude

Inactive Publication Date: 2014-06-25
阿科玛(苏州)高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, these materials are very expensive and must face recent production shortages

Method used

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  • Termite-resistant cable sheath polyamide composition, cable sheath, production method and use
  • Termite-resistant cable sheath polyamide composition, cable sheath, production method and use

Examples

Experimental program
Comparison scheme
Effect test

no. 2 approach

[0119] According to a second embodiment of the invention, the polyamide composition comprises at least one organic antioxidant (A1).

[0120] The organic antioxidant (A1) may be selected from those previously defined. Preferred organic antioxidants (A1) are selected from hindered phenolic antioxidants.

[0121] The polyamide composition according to the invention may comprise as a second antioxidant at least one antioxidant (A2) which is different from the antioxidant (A1 ) and which is preferably selected from organic antioxidants. Organic antioxidants (A2) may be selected from organic phosphites, organic phosphonites and / or thio antioxidants. Preferred organic antioxidants (A2) are selected from organic phosphites and organic phosphonites.

[0122] As organophosphites or organophosphinites that can be used in the polyamide composition of the invention, mention may be made of 4,4'-biphenylene diphosphonite tetrakis(2,4-di-tert- Butylphenyl) ester ( P-EPQ), triphenylphosp...

Embodiment

[0209] The polyamide compositions described below have been prepared by melt blending the different ingredients and then extruding into films or tubes depending on the testing purpose. In the extruder, extrusion was performed at a screw speed of 40 revolutions per minute (rpm) with barrel temperatures varying from 180°C to 245°C. Appropriate dies are used to obtain films or tubes.

[0210] The amounts in the table below are given in weight percent relative to the total weight of the polyamide composition.

[0211] Polyamide composition according to the invention

I

II

III

IV

PA10.10

q.s.100

-

-

-

PA10.12

-

q.s.100

-

q.s.100

PA12.12

-

-

q.s.100

-

carbon black

-

-

2

Green Masterbatch

-

-

6

-

blue masterbatch

3

5

-

-

ADK Stab PEP-36

0.2

0.1

0.3

-

Lowinox 44B25

0.2

0.1

0.4

-...

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Abstract

The invention provides a termite-resistant cable sheath polyamide composition, a cable sheath, a production method and use. The invention relates to the use of the polyamide composition in production of single-layer or multi-layer cable sheaths which are resistant to damages caused by termite, and the polyamide composition comprises the following materials: a) at least one aliphatic polyamide with at least two units corresponding to the following formula X.Y, wherein the X.Y represents a unit obtained by polycondensation of a diamine with X carbon atoms and a dicarboxylic acid with Y carbon atoms, and the sum of X and Y is strictly greater than 18; b) at least one UV absorber and possible at least one UV stabilizer; and c) at least one antioxidant preferably with the weight ratio of antioxidant to light stabilizer being less than or equal to 0.7. The invention also relates to the cable sheath made from the polyamide composition provided by the invention, the production method of the cable sheath provided by the invention, and the use of the cable sheath provided by the invention in cables or fiber cables.

Description

technical field [0001] The technical field of the invention relates to cable sheathing, in particular for electrical and optical fiber cables, which especially exhibit excellent termite resistance. [0002] The present invention relates to a polyamide composition comprising at least one specific aliphatic polyamide, at least one UV absorber and / or UV stabilizer, and at least one antioxidant for the manufacture of monolayer or multilayer polyamides resistant to termite damage. Use of layered cable jackets, especially cable jackets for electrical and fiber optic cables. Furthermore, cables according to the invention exhibit at least one additional property disclosed further below. [0003] In particular, the present invention relates to polyamide compositions comprising at least one specific aliphatic polyamide, at least one UV absorber and / or UV stabilizer, and at least one antioxidant, wherein the total amount of antioxidant / The weight ratio of the total amount of UV protec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06H01B3/30H01B7/17B29C47/92B29C48/92
CPCC08K3/013B29C48/92C08K5/005C08L77/06H01B3/305H01B7/18B29C2948/92704C08L2201/08C08L2203/202B29C2948/92114B29C2948/922B29C2948/92266B29C2948/92285B29C2948/92485B29C2948/92895
Inventor M.普米尔德桑蒂李振中D.劳里内P.当M.科赫斯拉威
Owner 阿科玛(苏州)高分子材料有限公司
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