An LLDPE (Linear low-density polyethylene) material for communication cable jackets

A communication cable and sheath material technology, which is applied in the direction of insulating cables, cables, circuits, etc., can solve the problems of flammability, poor wear resistance, acid and alkali resistance and dielectric properties, etc.

Active Publication Date: 2013-09-11
STATE GRID SHANDONG ELECTRIC POWER COMPANY RIZHAOPOWER SUPPLY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above technical problems, the present application provides a kind of LLDPE communication cable sheathing material and its preparation method, which solves the problem that most of the existing communication cable sheathing materials have poor light, thermal stability, flammability, acid and alkali resistance, dielectric properties and wear resistance. Poor technical issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Lldpe 100;

[0061] Ldpe 17;

[0062] Pp 12;

[0063] Zinc hyacxide 1;

[0064] Carbon black 10;

[0065] Antioxidant 1010 5;

[0066] PE wax 5.

[0067] Step 2: Mix the above raw materials at 60-70 ° C for 10-15min to disperse each component;

[0068] Step 3: Put the material mixed in the second step to 210-230 ℃.Rate 10 3 / s.

[0069] Product melt flowing rate 2g / 10min, dielectric strength 28mv / m, volume resistivity 2 × 10 14 Ω · cm, stretching strength 16MPa, a break -up rate of 815%.

[0070] Example 2:

Embodiment 2

[0072] Lldpe 100;

[0073] Ldpe 16;

[0074] Pp 14;

[0075] Zinc acid zinc 0.5;

[0076] Carbon black 5.2;

[0077] Antioxidant dltp 0.38;

[0078] PE wax 1.

[0079] Step 2: Mix the above raw materials at 60-70 ° C for 10-15min to disperse each component;

[0080] Step 3: Put the material mixed in the second step to 210-230 ℃.Rate 10 3 / s.

[0081] Product melt flowing rate 2.2g / 10min, dielectric strength 29mV / m, volume resistivity 2.2 × 10 14 Ω · cm, stretching strength of 16.5MPa, a break -up rate of 820%.

[0082] Example 3:

Embodiment 3

[0084] Lldpe 100;

[0085] Ldpe 16;

[0086] Pp 14;

[0087] Zinc acid zinc 0.5;

[0088] Carbon black 2.6;

[0089] Antioxidant DLTP 0.4;

[0090] Antioxidant 1010 0.5;

[0091] PE wax 1.

[0092] Step 2: Mix the above raw materials at 60-70 ° C for 10-15min to disperse each component;

[0093] Step 3: Put the material mixed in the second step to 210-230 ℃.Rate 10 3 / s.

[0094] Product melt flow rate 2.5g / 10min, dielectric strength 30mV / m, volume resistivity 2.4 × 10 14 Ω · cm, stretching strength 17MPa, a break -up rate of 825%.

[0095] Example 4:

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Abstract

An LLDPE (Linear low-density polyethylene) material for communication cable jackets is composed of the following components, in parts by weight: 100 parts of LLDPE, 10-25 parts of LDPE, 5-20 parts of PP, 0.01-2 parts of a thermal stabilizer, 1-20 parts of carbon black, 0. 1-10 parts of an antioxidant, and 0.1-10 parts of PE wax; has a product melt flow rate of greater than 2g / 10min which is greatly improved compared with the product melt flow rate of 0.1-0.3g / 10min in existing materials for cable jackets, an elongation rate of 850%, which is greatly improved compared with the elongation rate of 400% in existing LLDPE materials; and a tensile strength of 16-21MPa, and a density of 0.94-0.95g / cm3. The product does not fracture at -80 DEG C, has a volume resistivity of greater than 2*10<14> omega.cm, a dielectric strength of 28 -35KV / mm, and environmental stress crack resistance of greater than or equal to 30h; the product is flame retardant, anti-microbial, acid and alkaline resistant, and wear-resistant, and can be widely produced to replace existing materials

Description

Technical field [0001] This application belongs to the field of communication cable protectives, especially involving a LLDPE communication cable cover and its preparation method. Background technique [0002] High-density polyethylene.Compared with MDPE (medium density polyethylene) and LD / LLD (low density / linear low density), the HDPE material molecular chain structure is regular, the molecular chain has fewer branches, and the branch chain is shorter, the molecular chain arranges neatly arranged neatly, The molecular chain is small, and the molecular chain is strong.The characteristics of these short -range structures of HDPE determine that they have the following basic properties: the material density is high, the crystallization is good, the crystallization is high, and the inter -molecular layer is strong.The macro manifestation is the mechanical properties of high material density, stretching strength and other mechanical properties than LLD / LD / MD. The material has high ha...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/06C08L23/12C08L27/06H01B3/44H01B7/17C08K13/02C08K3/04C08K5/098C08K3/38B29C47/92B29C48/92
Inventor 张宇左士祥
Owner STATE GRID SHANDONG ELECTRIC POWER COMPANY RIZHAOPOWER SUPPLY
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