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A high-strength, highly flame-retardant PVC insulating tape

An insulating tape, high flame-retardant technology, applied in the direction of adhesives, film/sheet adhesives, etc., can solve the problems of non-flammability, safety hazards, flame retardancy and poor tensile strength

Active Publication Date: 2018-08-28
广州市卡倍力汽车零部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of PVC is that its flame retardancy and tensile strength are poor. When it is used for bonding and sealing joints, it is easy to cause loosening of the joints. security risks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In the embodiment of the present invention, a high-strength, high flame-retardant PVC insulating tape is composed of a base layer and an adhesive layer. The base layer is made of the following components in mass percentage: PVC 50%, glass fiber 24%, aluminum oxide 9 %, zinc sulfate 4%, magnesium phosphate 6%, wollastonite 5%, quartz 2%. The glass fibers are short glass fibers with a length of 5-15 mm and a diameter of 10-12 μm.

[0021] The preparation method of described high-strength, highly flame-retardant PVC insulating tape comprises the following steps:

[0022] (1) The preparation method of described base layer, comprises the following steps:

[0023] 1) Pretreatment of PVC: first heat the extract of Sophora japonica to 40°C, then put PVC into the extract of Sophora japonica, soak at this temperature for 72 hours, filter to obtain the treated PVC, and set aside;

[0024] 2) Pretreatment of glass fibers: heat-treat the glass fibers at 380°C for 3 hours, then coo...

Embodiment 2

[0029] In the embodiment of the present invention, a high-strength, high flame-retardant PVC insulating tape is composed of a base layer and an adhesive layer. The base layer is made of the following components in mass percentage: PVC 55%, glass fiber 22%, aluminum oxide 7 %, zinc sulfate 4%, magnesium phosphate 5%, wollastonite 4%, quartz 3%. The glass fibers are short glass fibers with a length of 5-15 mm and a diameter of 10-12 μm.

[0030] The preparation method of described high-strength, highly flame-retardant PVC insulating tape comprises the following steps:

[0031] (1) The preparation method of described base layer, comprises the following steps:

[0032] 1) Pretreatment of PVC: first heat the extract of Sophora japonica to 48°C, then put PVC into the extract of Sophora japonica, soak at this temperature for 24 hours, filter to obtain treated PVC, and set aside;

[0033] 2) Pretreatment of glass fibers: heat-treat the glass fibers at 400°C for 2.5 hours, then cool ...

Embodiment 3

[0038] In the embodiment of the present invention, a high-strength, high flame-retardant PVC insulating tape is composed of a base layer and an adhesive layer, and the base layer is made of the following components in mass percentage: PVC 60%, glass fiber 18%, aluminum oxide 8% %, zinc sulfate 2%, magnesium phosphate 6%, wollastonite 3%, quartz 3%. The glass fibers are short glass fibers with a length of 5-15 mm and a diameter of 10-12 μm.

[0039] The preparation method of described high-strength, highly flame-retardant PVC insulating tape comprises the following steps:

[0040] (1) The preparation method of described base layer, comprises the following steps:

[0041] 1) Pretreatment of PVC: first heat the extract of Sophora japonica to 40°C, then put PVC into the extract of Sophora japonica, soak at this temperature for 72 hours, filter to obtain the treated PVC, and set aside;

[0042] 2) Pretreatment of glass fibers: heat-treat the glass fibers at 380°C for 3 hours, the...

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Abstract

The invention discloses a high-strength and high-flame-retardant PVC insulation tape which is composed of a base layer and an adhesive layer; the base layer is prepared from the following components by the mass percentage: 50-65% of PVC, 15-24% of glass fibers, 5-9% of alumina, 2-4% of zinc sulfate, 4-6% of magnesium phosphate, 3-5% of wollastonite, and 1-3% of quartz; the base layer is obtained by the steps of PVC pretreatment, glass fiber pretreatment and mixing. The insulation tape prepared by using the base layer has high tensile strength and high flame retardancy, the tensile strength is 15.2-18.3 MPa, the elongation at break is 740-825%, the smoke concentration is 95-139%, the oxygen index is 46-64%, the hydrogen halide release amount is 10.0-14.3 mg / g, and the toxicity index is 2.15-3.05.

Description

technical field [0001] The invention relates to the technical field of electric power materials, in particular to a high-strength, high-flame-retardant PVC insulating tape. Background technique [0002] Insulating tape specifically refers to the tape used by electricians to prevent leakage and perform insulation. Also known as insulating tape and tape, it consists of a base tape and a pressure-sensitive adhesive layer. The base belt is generally made of cotton cloth, synthetic fiber fabric and plastic film, etc. The adhesive layer is made of rubber plus tackifying resin and other compounding agents, with good viscosity and excellent insulation performance. Insulating tape has good insulation and voltage resistance, flame retardant, weather resistance and other characteristics, and is suitable for wire connection, electrical insulation protection and other characteristics. [0003] PVC has become the most commonly used base material for insulating tape because of its excell...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/24C08L27/06C08K13/06C08K9/02C08K7/14C08K3/22C08K3/30C08K3/32C08K3/34C08K3/36C08J7/00
Inventor 陈薇
Owner 广州市卡倍力汽车零部件有限公司