Flame-retardant anti-corrosion heat shrinkable tube material and preparation method thereof

Abstract

The invention provides a flame-retardant anti-corrosion heat shrinkable tube material and a preparation method thereof. The heat shrinkable tube material comprises the following raw materials by weight: 70-100 parts of EVA resin, 30-50 parts of thermosetting liquid polyimide pure resin, 4-6 parts of vapor phase growth nano carbon fiber powder, 6-10 parts of flame-retardant composite material, 2-4parts of polytetrafluoroethylene micropowder, 2-4 parts of phthalic anhydride, 3-6 parts of silane coupling agent, 3-7 parts of chlorinated paraffin, 4-7 parts of liquid paraffin, 5-9 parts of polyethylene glycol 400 and 0.5-0.9 part of compatibilizer. The preparation method comprises the following steps: the step S1 of preparing raw materials; the step S2 of premixing of the polytetrafluoroethylene micropowder, the phthalic anhydride, the silane coupling agent, the vapor phase growth nano carbon fiber powder and the flame-retardant composite; the step S3 of mixing; the step S4 of extrusion, molding and drying. The heat shrinkable tube material is excellent in flame retardancy, corrosion resistance, high temperature resistance and thermal stretching performance.

Description

technical field

[0001] The invention belongs to the technical field of heat-shrinkable sleeve materials, and in particular relates to a flame-retardant and corrosion-resistant heat-shrinkable sleeve material and a preparation method thereof. Background technique

[0002] Heat-shrinkable sleeve, also known as heat-shrinkable protective sleeve, provides insulation protection for wires, cables and wire terminals. It has the characteristics of low-temperature shrinkage, softness, flame retardancy, insulation and corrosion resistance, etc. Anti-rust and anti-corrosion of metal pipes and rods. In order to further expand the scope of use of heat shrinkable tubing, the heat shrinkable tubing material is usually functionally modified according to the needs of the place of use, such as adding a flame retardant to enhance the flame retardant properties of the heat shrinkable tubing material, through Add thermally conductive fillers to give the heat-shrinkable sleeve material good ther...

Examples

Embodiment 1

[0018] A flame-retardant and anti-corrosion heat-shrinkable sleeve material, comprising the following raw materials in parts by weight:

[0019] 85 parts of EVA resin, 42 parts of pure thermosetting liquid polyimide resin, 5 parts of vapor phase growth nano-carbon fiber powder, 8 parts of flame-retardant composite material, 3 parts of polytetrafluoroethylene micropowder, 3 parts of phthalic anhydride, silane coupling 5.6 parts of chlorinated paraffin, 5 parts of chlorinated paraffin, 6 parts of liquid paraffin, 4007 parts of polyethylene glycol, and 0.7 part of maleic acid grafted ABS; wherein, the preparation steps of the flame-retardant composite material are as follows:

[0020] (1) In parts by weight, take 4 parts of expanded graphite, 2.3 parts of nano-zinc borate, 0.6 parts of nano-alumina and 3.2 parts of ammonium polyphosphate, mix and stir evenly, then add 3.6 parts of perfluorobutylsulfonate potassium and stir well mixed;

[0021] (2) Put the mixture obtained in ste...

Embodiment 2

[0028] A flame-retardant and anti-corrosion heat-shrinkable sleeve material, comprising the following raw materials in parts by weight:

[0029] 90 parts of EVA resin, 48 parts of pure thermosetting liquid polyimide resin, 5 parts of vapor phase growth nano-carbon fiber powder, 9 parts of flame-retardant composite material, 3 parts of polytetrafluoroethylene micropowder, 3.6 parts of phthalic anhydride, silane coupling 6 parts of chlorinated paraffin, 6 parts of liquid paraffin, 4008 parts of polyethylene glycol, 0.8 part of maleic acid grafted PP; wherein, the preparation steps of the flame-retardant composite material are as follows:

[0030] (1) In parts by weight, take 4 parts of expanded graphite, 2.3 parts of nano-zinc borate, 0.6 parts of nano-alumina and 3.2 parts of ammonium polyphosphate, mix and stir evenly, then add 3.6 parts of perfluorobutylsulfonate potassium and stir well mixed;

[0031] (2) Put the mixture obtained in step (1) into a ball mill and grind it fo...

Embodiment 3

[0038] A flame-retardant and anti-corrosion heat-shrinkable sleeve material, comprising the following raw materials in parts by weight:

[0039] 90 parts of EVA resin, 42 parts of pure thermosetting liquid polyimide resin, 5 parts of vapor phase growth nano-carbon fiber powder, 8 parts of flame-retardant composite material, 3 parts of polytetrafluoroethylene micropowder, 3 parts of phthalic anhydride, silane coupling 5 parts of chlorinated paraffin, 6 parts of liquid paraffin, 4007 parts of polyethylene glycol, 0.8 part of maleic acid grafted PE; wherein, the preparation steps of the flame-retardant composite material are as follows:

[0040] (1) In parts by weight, take 4 parts of expanded graphite, 2.3 parts of nano-zinc borate, 0.6 parts of nano-alumina and 3.2 parts of ammonium polyphosphate, mix and stir evenly, then add 3.6 parts of perfluorobutylsulfonate potassium and stir well mixed;

[0041] (2) Put the mixture obtained in step (1) into a ball mill and grind it for 5 ...

technical field

[0001] The invention belongs to the technical field of heat-shrinkable sleeve materials, and in particular relates to a flame-retardant and corrosion-resistant heat-shrinkable sleeve material and a preparation method thereof. Background technique

[0002] Heat-shrinkable sleeve, also known as heat-shrinkable protective sleeve, provides insulation protection for wires, cables and wire terminals. It has the characteristics of low-temperature shrinkage, softness, flame retardancy, insulation and corrosion resistance, etc. Anti-rust and anti-corrosion of metal pipes and rods. In order to further expand the scope of use of heat shrinkable tubing, the heat shrinkable tubing material is usually functionally modified according to the needs of the place of use, such as adding a flame retardant to enhance the flame retardant properties of the heat shrinkable tubing material, through Add thermally conductive fillers to give the heat-shrinkable sleeve material good ther...

Examples

Embodiment 1

[0018] A flame-retardant and anti-corrosion heat-shrinkable sleeve material, comprising the following raw materials in parts by weight:

[0019] 85 parts of EVA resin, 42 parts of pure thermosetting liquid polyimide resin, 5 parts of vapor phase growth nano-carbon fiber powder, 8 parts of flame-retardant composite material, 3 parts of polytetrafluoroethylene micropowder, 3 parts of phthalic anhydride, silane coupling 5.6 parts of chlorinated paraffin, 5 parts of chlorinated paraffin, 6 parts of liquid paraffin, 4007 parts of polyethylene glycol, and 0.7 part of maleic acid grafted ABS; wherein, the preparation steps of the flame-retardant composite material are as follows:

[0020] (1) In parts by weight, take 4 parts of expanded graphite, 2.3 parts of nano-zinc borate, 0.6 parts of nano-alumina and 3.2 parts of ammonium polyphosphate, mix and stir evenly, then add 3.6 parts of perfluorobutylsulfonate potassium and stir well mixed;

[0021] (2) Put the mixture obtained in ste...

Embodiment 2

[0028] A flame-retardant and anti-corrosion heat-shrinkable sleeve material, comprising the following raw materials in parts by weight:

[0029] 90 parts of EVA resin, 48 parts of pure thermosetting liquid polyimide resin, 5 parts of vapor phase growth nano-carbon fiber powder, 9 parts of flame-retardant composite material, 3 parts of polytetrafluoroethylene micropowder, 3.6 parts of phthalic anhydride, silane coupling 6 parts of chlorinated paraffin, 6 parts of liquid paraffin, 4008 parts of polyethylene glycol, 0.8 part of maleic acid grafted PP; wherein, the preparation steps of the flame-retardant composite material are as follows:

[0030] (1) In parts by weight, take 4 parts of expanded graphite, 2.3 parts of nano-zinc borate, 0.6 parts of nano-alumina and 3.2 parts of ammonium polyphosphate, mix and stir evenly, then add 3.6 parts of perfluorobutylsulfonate potassium and stir well mixed;

[0031] (2) Put the mixture obtained in step (1) into a ball mill and grind it fo...

Embodiment 3

[0038] A flame-retardant and anti-corrosion heat-shrinkable sleeve material, comprising the following raw materials in parts by weight:

[0039] 90 parts of EVA resin, 42 parts of pure thermosetting liquid polyimide resin, 5 parts of vapor phase growth nano-carbon fiber powder, 8 parts of flame-retardant composite material, 3 parts of polytetrafluoroethylene micropowder, 3 parts of phthalic anhydride, silane coupling 5 parts of chlorinated paraffin, 6 parts of liquid paraffin, 4007 parts of polyethylene glycol, 0.8 part of maleic acid grafted PE; wherein, the preparation steps of the flame-retardant composite material are as follows:

[0040] (1) In parts by weight, take 4 parts of expanded graphite, 2.3 parts of nano-zinc borate, 0.6 parts of nano-alumina and 3.2 parts of ammonium polyphosphate, mix and stir evenly, then add 3.6 parts of perfluorobutylsulfonate potassium and stir well mixed;

[0041] (2) Put the mixture obtained in step (1) into a ball mill and grind it for 5 ...

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