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Polyformaldehyde and polyurethane blend cable sheath material

A technology of cable sheath material and polyurethane, which is applied in the field of cable sheath material, can solve the problems of high notch sensitivity and insufficient toughness, and achieve the effects of environmental friendliness, improved mechanical properties and increased toughness

Active Publication Date: 2019-01-04
SHANDONG HUANENG CABLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] For this reason, the technical problem to be solved by the present invention is: how to overcome the shortcomings of existing polyoxymethylene (POM) resins, such as high notch sensitivity and insufficient toughness, and how to enhance the flame-retardant effect of polyoxymethylene resins, so as to provide a halogen-free Low-smoke, flame-retardant polyoxymethylene / polyurethane blend cable sheathing compound

Method used

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  • Polyformaldehyde and polyurethane blend cable sheath material

Examples

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Effect test

Embodiment 1

[0038] A polyoxymethylene-polyurethane blend cable sheath material A, whose raw materials are composed of the following components by weight: 55 parts of polyoxymethylene, 20 parts of polyurethane, 7 parts of polyurethane elastomer, 0.2 parts of melamine compatibilizer, 2 parts of red phosphorus 1 part, 1 part of attapulgite (ATP) and 2 parts of expandable graphite.

[0039] The weight average molecular weight of the polyoxymethylene is 150000g / mol; the polyurethane is the reaction product of 1,4-butanediol and isocyanurate, and the NCO content is 50% by weight; the polyurethane elastomer is polyethanol and isocyanurate The reaction product has an NCO content of 45% by weight.

[0040] The preparation method of described sheath material, comprises the following steps:

[0041] 1) Add polyoxymethylene, polyurethane, polyurethane elastomer and melamine compatibilizer into a high-speed kneader and knead at 100°C for 20 minutes to obtain a mixed resin base material.

[0042] 2) ...

Embodiment 2

[0045] A polyoxymethylene-polyurethane blend cable sheath material B, whose raw materials are composed of the following components in parts by weight: 65 parts of polyoxymethylene, 25 parts of polyurethane, 8 parts of polyurethane elastomer, 0.4 parts of melamine compatibilizer, 4 parts of red phosphorus 2 parts, 2 parts of attapulgite (ATP) and 5 parts of expandable graphite.

[0046] It is prepared according to the preparation method of Example 1.

Embodiment 3

[0048] A polyoxymethylene-polyurethane blend cable sheath material C, whose raw materials are composed of the following components by weight: 58 parts of polyoxymethylene, 23 parts of polyurethane, 7.5 parts of polyurethane elastomer, 0.3 parts of melamine compatibilizer, 3 parts of red phosphorus parts, attapulgite (ATP) 1.5 parts and expandable graphite 3.5 parts.

[0049] It is prepared according to the preparation method of Example 1.

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Abstract

The invention belongs to the field of cable sheath materials, and particularly relates to a polyformaldehyde and polyurethane blend cable sheath material. The material is prepared from, by weight, 50-70 parts of polyformaldehyde, 15-30 parts of polyurethane, 5-10 parts of polyurethane elastomer, 0.1-0.5 part of melamine bulking agent, 1-5 parts of red phosphorus, 0.5-3.0 parts of attapulgite (ATP)and 1-6 parts of expansible graphite. The red phosphorus, attapulgite and expansible graphite in the specific ratio are adopted for a flame retardant used in the cable sheath material and have an unexpected synergistic interaction effect on the flame retardant effect. The cable sheath material is excellent in comprehensive performance, and the mechanical performance, electric insulation performance, thermal resistance, chemical resistance stability and weather-proof performance are all greatly improved except the extremely excellent halogen-free low-smoke and flame-retardant performance.

Description

technical field [0001] The invention belongs to the field of cable sheathing materials, and in particular relates to a polyoxymethylene-polyurethane blend cable sheathing material, a preparation method and application thereof. Background technique [0002] Ordinary wire and cable materials do not contain flame retardants, and will not produce too much poisonous gas and smoke when burned, but they do not have flame retardant properties. To have flame retardant properties, flame retardants need to be added. The existing flame retardants used in plastics are mainly divided into chlorine series (accounting for 69% of the flame retardants used in my country), bromine series (accounting for 8% of the flame retardants used in my country), phosphorus series and phosphorus halide series, And inorganic systems, and halogenated flame retardants including chlorine and bromine are obviously the main flame retardants currently used. However, the use of halogen-based flame retardants will ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L59/00C08L75/04C08K13/04C08K7/24C08K5/3492C08K3/02C08K3/34
CPCC08K2003/026C08L59/00C08L2201/02C08L2201/08C08L2205/025C08L2205/03C08L75/04C08K13/04C08K7/24C08K5/34922C08K3/02C08K3/346
Inventor 曹秉营夏和生曹德利刘鲲鹏张盼盼
Owner SHANDONG HUANENG CABLE
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