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Coaxial cable sheath or insulating layer combination and preparation method thereof

A coaxial cable and insulating layer technology, which is applied in the direction of coaxial cable, conductor/cable insulation, coaxial cable/analog cable, etc., can solve the problem of low temperature resistance of polyethylene sheath and insulating To solve the problem of high cost, achieve the effect of low material cost, performance improvement and mechanical performance

Inactive Publication Date: 2017-01-25
SHENZHEN SUIRONG COAXIAL CABLE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention aims at the problems that the existing coaxial cable fluoroplastic sheath has high cost and the existing polyethylene sheath and insulating layer have low temperature resistance, and provides a coaxial cable sheath or insulating layer composition The invention and its preparation method effectively improve the high temperature resistance of the sheath layer and the insulating layer, so that the temperature resistance can reach 260°C, and can be used in harsh working environments.

Method used

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  • Coaxial cable sheath or insulating layer combination and preparation method thereof
  • Coaxial cable sheath or insulating layer combination and preparation method thereof
  • Coaxial cable sheath or insulating layer combination and preparation method thereof

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preparation example Construction

[0038] A preparation method of a coaxial cable disclosed by the invention comprises the following steps:

[0039] step one:

[0040] Form the insulating layer outside the inner conductor to obtain an insulating core wire. The specific steps are as follows:

[0041] 24-30 parts by weight of HDPE 6944, 23-28 parts by weight of LDPE 1253, 20-25 parts by weight of LLDPE DNDA-7144 and 30-43 parts by weight of HDPE 2911 are put into a high-speed mixer and mixed to prepare polyethylene base material;

[0042] 0.5-1.5 parts by weight of TMPTMA, 0.5-1.5 parts by weight of DCP, 0.5-1.2 parts by weight of PETA and 0.5-1.2 parts by weight of TPGDA are put into a high-speed mixer and mixed to prepare a crosslinking agent;

[0043] Take 90-110 parts by weight of polyethylene base material and 2-4 parts by weight of cross-linking agent, put them into a high-speed mixer and mix them to obtain cross-linked material granules for insulating layer;

[0044] Adding 1.5-2.0 parts by weight of a n...

Embodiment 1

[0067] The preparation method of a kind of coaxial cable that present embodiment provides, comprises the following steps:

[0068] step one:

[0069] Form the insulating layer outside the inner conductor to obtain an insulating core wire. The specific steps are as follows:

[0070] 30 parts by weight of HDPE 6944, LDPE 1253 of 23 parts by weight, HDPE 2911 of 20 parts by weight of LLDPEDNDA-7144 and 43 parts by weight of HDPE 2911 are put into a high-speed mixer and mixed to prepare polyethylene base material;

[0071] 1.0 parts by weight of TMPTMA, 1.0 parts by weight of DCP, 0.5 parts by weight of PETA and 0.5 parts by weight of TPGDA are dropped into a high-speed mixer and mixed to prepare a crosslinking agent;

[0072] Take 100 parts by weight of polyethylene base material and 2.5 parts by weight of crosslinking agent, put them into a high-speed mixer and mix them to obtain crosslinked material granules for insulating layer;

[0073] Adding 1.5 parts by weight of a nucle...

Embodiment 2

[0086] This embodiment provides a method for preparing a coaxial cable. Most of the steps in this embodiment are the same as those in Embodiment 1, the specific differences are:

[0087] In step one, 26 parts by weight of HDPE 6944, 26 parts by weight of LDPE 1253, 23 parts by weight of LLDPE DNDA-7144 and 36 parts by weight of HDPE 2911 are put into a high-speed mixer and mixed to prepare a polyethylene base material;

[0088] In step 3, 26 parts by weight of HDPE 6944, 26 parts by weight of LDPE 1253, 23 parts by weight of LLDPE DNDA-7144 and 36 parts by weight of HDPE 2911 were put into a high-speed mixer and mixed to prepare a polyethylene base material.

[0089] The resulting coaxial cable is designated as S2.

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Abstract

The invention provides a coaxial cable sheath or insulating layer combination and a preparation method thereof. The coaxial cable sheath or insulating layer combination comprises, by weight, 90-110 parts of polyethylene base materials and 2-4 parts of cross-linking agents. The polyethylene base materials comprise, by weight, 24-30 parts of HDPE (high-density polyethylene) 6944, 23-28 parts of LDPE (low-density polyethylene) 1253, 20-25 parts of LLDPE (linear low density polyethylene) DNDA-7144 and 30-43 parts of HDPE 2911. The cross-linking agents comprise, by weight 0.5-1.5 parts of TMPTMA (trimethylolpropane trimethylacrylate), 0.5-1.5 parts of DCP (dicumyl peroxide) and 0.5-1.2 parts of PETA (pentaerythritol triacrylate). The coaxial cable sheath or insulating layer combination and the preparation method thereof solve the problems that a fluoroplastic sheath of an existing coaxial cable is high in cost and large in proportion, and an existing polyethylene sheath and an existing insulating layer are poor in temperature tolerance.

Description

technical field [0001] The invention belongs to the technical field of coaxial cable materials, and in particular relates to a coaxial cable sheath or insulating layer composition and a preparation method thereof. Background technique [0002] The cable jacket is the protective layer of the cable against various erosions. In daily use, cables are often subjected to thermal loads (continuous or discontinuous changes in the lowest or highest temperature limits), mechanical loads (flexibility, wear resistance, tensile load and resistance to treading) or chemical corrosion (with Thinner, liquid medium and oil contact), it is necessary to set up a sheath to protect the cable. In some specific places, the sheath is required to have a certain high temperature resistance. Existing coaxial cables often use FEP, PFA and other fluorine As a sheath material, plastic has good high temperature resistance, but fluoroplastics have some disadvantages: the high material cost leads to high pr...

Claims

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Application Information

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IPC IPC(8): H01B9/04H01B11/18H01B7/17H01B7/02H01B13/14H01B13/24C08L23/06C08L23/08C08K5/14C08K5/103
Inventor 谢榕辉谢洁伟
Owner SHENZHEN SUIRONG COAXIAL CABLE TECH
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