High-stretching-ratio-resisting adhesive for cable shielding film

A cable shielding and elongation technology, applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., to achieve the effect of no cracks, increased adhesion, and good flexibility

Inactive Publication Date: 2017-02-01
中山市康和化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, cable manufacturers have also proposed the need for an adhesive for cable shielding films with a tensile rate higher than 60%, but no one has yet conducted research in this area.

Method used

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  • High-stretching-ratio-resisting adhesive for cable shielding film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The high-stretch-resistant adhesive for cable shielding film provided in this example includes a main agent and a curing agent, and the mass ratio of the main agent and curing agent is 100:3, wherein the main agent is a polyurethane macromolecule The molecular weight is 19600, the hydroxyl value is 5.9mgKOH / g, the solid content is 50%, and the rotational viscosity at 25°C is 1200mPa.s.

[0031] The polyurethane macromolecule is mainly synthesized by using polyester polyol, isocyanate, ethyl acetate, catalyst a and defoamer as raw materials.

[0032] (1) Synthesize polyester polyol first

[0033] Polyester polyols are mainly synthesized from neopentyl glycol, diethylene glycol, 1,2-propylene glycol, small molecule polyols, terephthalic acid, isophthalic acid, sebacic acid and catalyst b, and the hydroxyl groups of polyester polyols The value is 40~50mgKOH / g, acid value<2mgKOH / g, glass transition temperature≤-15℃.

[0034] Wherein the mass parts of neopentyl glycol, die...

Embodiment 2

[0050] The high-stretch-resistant adhesive for cable shielding film provided in this example includes a main agent and a curing agent, and the mass ratio of the main agent and curing agent is 100:3, wherein the main agent is a polyurethane macromolecule The molecular weight is 22170, the hydroxyl value is 5.6mgKOH / g, the solid content is 50%, and the rotational viscosity at 25°C is 1300mPa.s.

[0051] The polyurethane macromolecule is mainly synthesized by using polyester polyol, isocyanate, ethyl acetate, catalyst a and defoamer as raw materials.

[0052] (1) Synthesize polyester polyol first

[0053] Polyester polyols are mainly synthesized from neopentyl glycol, diethylene glycol, 1,2-propylene glycol, small molecule polyols, terephthalic acid, isophthalic acid, sebacic acid and catalyst b, and the hydroxyl groups of polyester polyols The value is 40~50mgKOH / g, acid value<2mgKOH / g, glass transition temperature≤-15℃.

[0054] Wherein the mass parts of neopentyl glycol, die...

Embodiment 3

[0071] The high-stretch-resistant adhesive for cable shielding film provided in this example includes a main agent and a curing agent, and the mass ratio of the main agent and curing agent is 100:3, wherein the main agent is a polyurethane macromolecule The molecular weight is 24380, the hydroxyl value is 4.8mgKOH / g, the solid content is 50%, and the rotational viscosity at 25°C is 1300mPa.s.

[0072] The polyurethane macromolecule is mainly synthesized by using polyester polyol, isocyanate, ethyl acetate, catalyst a and defoamer as raw materials.

[0073] (1) Synthesize polyester polyol first

[0074] Polyester polyols are mainly synthesized from neopentyl glycol, diethylene glycol, 1,2-propanediol, small molecule polyols, terephthalic acid, isophthalic acid, adipic acid and catalyst b, and the hydroxyl groups of polyester polyols The value is 40~50mgKOH / g, acid value<2mgKOH / g, glass transition temperature≤-15℃.

[0075] Wherein the mass parts of neopentyl glycol, diethylen...

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Abstract

The invention discloses a high-stretching-ratio-resisting adhesive for a cable shielding film. The high-stretching-ratio-resisting adhesive is prepared from a main agent and a curing agent, wherein the mass part ratio of the main agent to the curing agent is 100 to 3; the main agent is a polyurethane macromolecule; the molecular weight of the polyurethane macromolecule is 19000 to 25000, a hydroxyl value is 4.5mgKOH / h to 6mgKOH / g and the solid content is 48 percent to 52 percent; the rotary viscosity at 25 DEG C is 1000mPa.S to 1500mPa.S. The adhesive provided by the invention has excellent flexibility and high bonding strength on an aluminum layer; when the high-stretching-ratio-resisting adhesive is used for adhering the cable shielding film, the aluminum layer is not broken and has no cracks under a stretching ratio which is smaller than or equal to 70 percent, so that the shielding effect of the cable shielding film is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to an adhesive for cable shielding films resistant to high stretching ratios. Background technique [0002] In power systems, especially power control systems and power protection systems, integrated circuits and computers composed of microelectronic components, single-chip microcomputers and other weak current devices are widely used. Such devices have high requirements for anti-electromagnetic interference. The fluctuation of the high-voltage power grid is the main factor causing electromagnetic interference. Therefore, in high-voltage substation sites, the cables responsible for the power transmission function should use control cables with shielding layers, so-called shielded cables. [0003] The shielding layer of the shielded cable mainly has structures such as PET12 / AL10, PET12 / AL9, AL7 / PET12 / AL7, etc., and the PET and AL films are bonded with adhesive. Due to ...

Claims

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Application Information

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IPC IPC(8): C09J175/06C08G18/42C08G18/83C08G63/672
Inventor 任众林秋云陈志国
Owner 中山市康和化工有限公司
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