Preparation method of ceramic polyolefin fire-resistant cable material

A ceramic polyolefin and fire-resistant cable technology, which is applied in the direction of plastic/resin/wax insulators, organic insulators, etc., can solve the problems of reduced insulation performance, expensive magnesium oxide mineral insulated cables, and low production efficiency, so as to improve the fire resistance level , good application prospects, easy processing effect

Inactive Publication Date: 2018-11-20
南通智达光缆材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cables that can be made of existing refractory materials mainly include: mica tape fire-resistant cables, magnesium oxide mineral insulated cables, flexible fire-resistant cables and fire-proof mud inorganic mineral fire-resistant fire-resistant cables, etc. These cables have various shortcomings, such as: mica tape fire-resistant The cable has poor flexibility, limited thickness, slow wrapping speed and low production efficiency, resulting in high processing and labor costs; strong moisture absorption, storage for 3-6 months, and rapid decline in insulation performance after being damp; in addition, the price is high, especially is synthetic mica
Magnesium oxide mineral insulated cables are expensive, the production process is complicated and the laying is difficult

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for preparing a ceramicized polyolefin fire-resistant cable material, the specific composition of the cable material is shown in Table 1 below.

[0029] Table 1

[0030] components

Weight / grams)

Polyethylene (PE)

13

Ethylene-vinyl acetate copolymer (EVA)

57

Graft maleic anhydride compatibilizer

7.5

wollastonite

400

glass fiber

140

Ammonium polyphosphate

70

Silicone glue

5

Antioxidant 1010

0.2

Antioxidant 264

0.2

Antioxidant 168

0.6

[0031] The preparation method of the cable material of present embodiment 1 comprises the steps:

[0032] (1) Add polyethylene, ethylene-vinyl acetate copolymer, grafted maleic anhydride compatibilizer, ammonium polyphosphate and antioxidant 1010, antioxidant 264 and antioxidant 168 into the internal mixer for 10 minutes Refining to 100°C;

[0033] (2) Add wollastonite and silicone glue, and banbury to 125°C for...

Embodiment 2

[0040] A method for preparing a ceramicized polyolefin fire-resistant cable material, the specific composition of the cable material is shown in Table 3 below.

[0041] table 3

[0042] components

Weight / grams)

polystyrene

10

Ethylene-vinyl acetate copolymer (EVA)

30

Epoxy resin type compatibilizer

30

Mica powder

350

glass powder

20

Kaolin

20

Zinc stearate

2

Antioxidant 300

1

Antioxidant 2264

1

Antioxidant 168

3

[0043] The preparation method of the cable material of present embodiment 2 comprises the steps:

[0044] (1) Polystyrene, ethylene-vinyl acetate copolymer, epoxy resin type compatibilizer, kaolin and antioxidant 300, antioxidant 2264 and antioxidant 168 were added in the internal mixer through banburying in 5 minutes to 90°C;

[0045] (2) Add mica powder and zinc stearate, and banbury to 115°C for 2 minutes;

[0046] (3) Add glass powder again, ...

Embodiment 3

[0052] A method for preparing a ceramicized polyolefin refractory cable material, the specific composition of the cable material is shown in Table 5.

[0053] table 5

[0054] components

Weight / grams)

polyethylene

100

Modified polyacrylate compatibilizer

1

Wolverine

500

ceramic powder

200

Aluminum hydroxide

100

Methicone

20

Antioxidant DLTP

2

Antioxidant 2264

5

Antioxidant ODP

3

[0055] The preparation method of the cable material of present embodiment 3 comprises the steps:

[0056] (1) Add polyethylene, modified polyacrylate compatibilizer, aluminum hydroxide, antioxidant DLTP, antioxidant 2264 and antioxidant ODP into the internal mixer and mix for 15 minutes to 110°C;

[0057] (2) Add Portlandite and methyl silicone oil, and banbury to 135°C for 8 minutes;

[0058] (3) add ceramic powder again, banbury to 185 ℃ after 40 minutes, stop banbury; and

[0059] (4) e...

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Abstract

The invention provides a preparation method of a ceramic polyolefin fire-resistant cable material. The cable material comprises the following components in parts by weight: 40-100 parts of polyolefin,1-30 parts of a compatibilizer, 350-500 parts of porcelain powder, 20-200 parts of a fluxing agent, 20-100 parts of a flame retardant, 2-20 parts of a lubricant and 1-10 parts of an antioxidant; andthe preparation method sequentially comprises the following steps: (1) adding the polyolefin, the compatibilizer, the flame retardant and the antioxidant to an internal mixer and internally mixing to90-110 DEG C in 5-15 min; (2) adding the porcelain powder and the lubricant and internally mixing to 115-135 DEG C in 2-8 min; (3) then adding the fluxing agent, internally mixing to 165-185 DEG C in20-40 min and stopping the internal mixing; and (4) performing twin-screw extrusion molding on materials obtained in the step (3) to obtain the ceramic polyolefin fire-resistant cable material. The preparation method of the invention is simple in operation and low in raw material cost; and the obtained cable material has good fire resistance and good application prospects.

Description

technical field [0001] The invention relates to the field of preparation of new materials, in particular to a method for preparing ceramic polyolefin refractory cable materials. Background technique [0002] With the development of society and economy, wires and cables have become an invisible and important part of people's daily life. In case of fire, it is very important to ensure the normal operation of the circuit. Therefore, in some large high-rise buildings and densely populated places, fire-resistant wires and cables have become people's subjective choice. The cables that can be made of existing refractory materials mainly include: mica tape fire-resistant cables, magnesium oxide mineral insulated cables, flexible fire-resistant cables and fire-proof mud inorganic mineral fire-resistant fire-resistant cables, etc. These cables have various shortcomings, such as: mica tape fire-resistant The cable has poor flexibility, limited thickness, slow wrapping speed and low pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06C08L83/04C08L63/00C08L25/06C08L33/08C08K13/04C08K7/14C08K3/34C08K3/32C08K3/40H01B3/44H01B3/40
CPCC08L23/0853C08K2003/323C08L23/06C08L63/00C08L2201/02C08L2203/202C08L2205/03C08L2205/035C08L2205/08H01B3/40H01B3/441C08L83/04C08K13/04C08K7/14C08K3/34C08K3/32C08L25/06C08K13/02C08K3/40C08K3/346C08K5/098C08L33/08C08K3/22C08K3/38
Inventor 姜智
Owner 南通智达光缆材料有限公司
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