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Wire rod coating material, and preparation method and application thereof

A technology of outer quilt and wire, applied in the field of wire, can solve the problems of easy aging, yellowing and brittleness of polyvinyl chloride, unsuitable for long-term close wearing, affecting the service life of earphone cables, etc., achieving low recycling cost and being conducive to environmental protection , The effect of not easy to age, yellow and become brittle

Inactive Publication Date: 2020-12-01
惠州市元塑高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyvinyl chloride has a pungent smell and is not suitable for long-term close-fitting wear; and polyvinyl chloride is prone to aging, yellowing and brittleness, which affects the service life of the earphone cable

Method used

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  • Wire rod coating material, and preparation method and application thereof
  • Wire rod coating material, and preparation method and application thereof
  • Wire rod coating material, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] In one of the embodiments, the preparation method of the wire coating includes part or all of the following steps.

[0032] S101, mixing the styrene-butadiene block copolymer, rubber plasticizer and polydimethylsiloxane evenly, and standing for 1 hour to 5 hours to obtain a premix.

[0033] Specifically, the raw material of the styrene-butadiene block copolymer is a powdery solid, the polydimethylsiloxane is an oily liquid, and the rubber plasticizer is also an oily liquid. In one embodiment, the rubber plasticizer is paraffin grade industrial base oil. Since both polydimethylsiloxane and rubber plasticizer are oily liquids, it can be understood that the powder of styrene-butadiene block copolymer is affected by the oily surface tension without processing. It is easy to float on the oily surface of polydimethylsiloxane and rubber plasticizer, that is, the three cannot be mixed evenly. This will directly lead to floating powder on the surface of the finished outer cove...

Embodiment 1

[0048] The preparation process of the wire rod outer covering material of the present embodiment is as follows:

[0049] (1) Raw materials, according to mass percentage, raw materials include 40% styrene-butadiene block copolymer, 30% rubber plasticizer, 10% polypropylene, 5% maleic anhydride graft compatibilizer, 12% EPDM Rubber, 1% polydimethylsiloxane, 1% antioxidant, 1% anti-ultraviolet agent.

[0050] (2) Put styrene-butadiene block copolymer, rubber plasticizer and polydimethylsiloxane into a mixer and mix evenly. The stirring speed is 200 rpm, and the stirring time is 30 minutes. After the stirring was completed, it was left to stand for 5 hours to obtain a premix.

[0051] (3) Add polypropylene, compatibilizer, EDPM rubber, antioxidant and anti-ultraviolet agent to the mixing tank. Stir at 500 rpm for 8 minutes to obtain a mixed raw material, and preheat the mixed raw material to 80°C.

[0052] (4) Put the mixed raw materials into the twin-screw extruder. Wherein, ...

Embodiment 2

[0055] The difference between this embodiment and embodiment 1 is:

[0056] (1) Raw materials, according to mass percentage, raw materials include 45% styrene-butadiene block copolymer, 26% rubber plasticizer, 10% polypropylene, 5% maleic anhydride graft compatibilizer, 10% EPDM Rubber, 2% polydimethylsiloxane, 1% antioxidant, 1% anti-ultraviolet agent.

[0057] (4) The rotating speed of the main engine is 500 rpm, and the residence time in the main engine is less than that in Example 1.

[0058] Other steps are all the same as in Example 1, and sample 2 is obtained.

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Abstract

The invention relates to a wire rod coating material, and a preparation method and application thereof. The material comprises the following components in percentage by mass: 35%-55% of a styrene-butadiene segmented copolymer, 15%-35% of a rubber plasticizer, 4%-13% of polypropylene, 3%-8% of a compatilizer, 5%-15% of EPDM rubber, 1%-3% of polydimethylsiloxane and 0.1%-2% of an auxiliary agent. The wire rod coating material is low in raw material price and simple in manufacturing process, and has the characteristics of softness, high elasticity and fine and smooth hand feeling; and meanwhile,the wire rod coating material can be directly melted and recycled without extra processing treatment, so recycling cost is low, and environmental protection is facilitated. The wire rod coating material is free of peculiar smell, safe and reliable to use and not prone to aging, yellowing and embrittlement, and therefore, the service life of a product is prolonged. The wire rod coating material isnot only suitable for earphone wires or electric wires, but also suitable for coating materials of other products; and by adopting the wire rod coating material, not only can higher economic benefitsbe obtained, but also better environmental benefits can be obtained.

Description

technical field [0001] The present application relates to the technical field of wire rods, in particular to a wire rod coating material and its preparation method and application. Background technique [0002] The headphone cable is the transmission medium used to transmit electrical signals between the media player and the receiver. The outermost layer of the earphone cable generally has a layer of insulating outer covering material, which is used to protect the inner metal wire. When using earphones, the earphone wire generally makes unavoidable contact with the user's skin. At this time, the tactility of the outer covering of the earphone cable is very important. [0003] In relatively high-end headphone cables, silica gel is generally used as the main base material of the outer covering. Silicone itself has the characteristics of safety, softness and high resilience. When it is used as the outer covering of the earphone cable, the earphone cable also has a soft, skin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/02C08L23/16C08L83/04C08L23/12
CPCC08L53/02C08L2205/035C08L2205/08C08L23/16C08L83/04C08L23/12
Inventor 艾祖国
Owner 惠州市元塑高分子材料有限公司
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