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A kind of TPU composite cable material for liquid level sensor and preparation method thereof

A liquid level sensor and composite cable technology, which is applied in the direction of circuits, electrical components, plastic/resin/wax insulators, etc., can solve the problem of solvent resistance that is difficult to meet the long-term immersion requirements of liquid level sensor cables, the decline in mechanical properties of TPU cables, and surface cracking and other issues, to achieve excellent mechanical properties, improve service life, good water resistance and solvent resistance

Active Publication Date: 2022-02-01
ANHUI SURXIN WIRE & CABLE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The liquid level sensor cable has been immersed in sewage, acid, alkali, ammonia water, etc. for a long time, and the environment is harsh. The traditional TPU cable has problems such as decreased mechanical properties, increased hardness, and surface cracking. Its solvent resistance is difficult to meet the needs of liquid level sensors. Long-term immersion requirements for cables

Method used

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  • A kind of TPU composite cable material for liquid level sensor and preparation method thereof
  • A kind of TPU composite cable material for liquid level sensor and preparation method thereof
  • A kind of TPU composite cable material for liquid level sensor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A TPU composite cable material for liquid level sensors, the composition of the raw materials is as follows:

[0033] TPU: 85%,

[0034] EVA: 5%,

[0035] HDPE: 5%,

[0036] Polyethylene wax (lubricant): 2%,

[0037] Antioxidant 168: 1%,

[0038] Phenyl glycidyl ether (hydrolysis stabilizer): 2%,

[0039] The preparation method of this TPU composite cable material comprises the following steps:

[0040] S1. Dry the TPU at 140°C for 8 hours;

[0041] S2. Then weigh the dried TPU, EVA, HDPE, lubricant, antioxidant and hydrolysis stabilizer in proportion, add them to a high-speed mixer and mix evenly, and use an extruder to granulate. The temperature of each section of the extruder is: 170°C-180°C for the first stage, 175°C-185°C for the second stage, 180°C-190°C for the third stage, 185°C-195°C for the fourth stage, and 190°C-200°C for the fifth stage. Head temperature 200-210°C.

Embodiment 2

[0043] A TPU composite cable material for liquid level sensors, the composition of the raw materials is as follows:

[0044] TPU: 80%,

[0045] EVA: 5%,

[0046] HDPE: 10%,

[0047] Polyethylene wax (lubricant): 2%,

[0048] Antioxidant 168: 1%,

[0049] Phenyl glycidyl ether (hydrolysis stabilizer): 2%,

[0050] The preparation method of this TPU composite cable material comprises the following steps:

[0051] S1. Dry the TPU at 150°C for 10 hours;

[0052]S2. Then weigh the dried TPU, EVA, HDPE, lubricant, antioxidant and hydrolysis stabilizer in proportion, add them to a high-speed mixer and mix evenly, and use an extruder to granulate. The temperature of each section of the extruder is: 170°C-180°C for the first stage, 175°C-185°C for the second stage, 180°C-190°C for the third stage, 185°C-195°C for the fourth stage, and 190°C-200°C for the fifth stage. Head temperature 200-210°C.

Embodiment 3

[0054] A TPU composite cable material for liquid level sensors, the composition of the raw materials is as follows:

[0055] TPU: 75%,

[0056] EVA: 10%,

[0057] HDPE: 10%,

[0058] Calcium stearate (lubricant): 2%,

[0059] Antioxidant 168: 1%,

[0060] Bisphenol A diglycidyl ester (hydrolysis stabilizer): 2%,

[0061] The preparation method of this TPU composite cable material comprises the following steps:

[0062] S1. Dry the TPU at 120°C for 6 hours;

[0063] S2. Then weigh the dried TPU, EVA, HDPE, lubricant, antioxidant and hydrolysis stabilizer in proportion, add them to a high-speed mixer and mix evenly, and use an extruder to granulate. The temperature of each section of the extruder is: 170°C-180°C for the first stage, 175°C-185°C for the second stage, 180°C-190°C for the third stage, 185°C-195°C for the fourth stage, and 190°C-200°C for the fifth stage. Head temperature 200-210°C.

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Abstract

The invention relates to the technical field of TPU composite cable material processing, in particular to a TPU composite cable material used for liquid level sensors and a preparation method thereof. The TPU composite cable material of the present invention includes raw materials in the following weight percentages: TPU: 70%-85%, EVA: 5%-10%, HDPE: 5%-15%, lubricant: 1%-5%, antioxidant : 0.5%‑1%, hydrolysis stabilizer: 1%‑5%. The TPU composite cable material of the present invention has strong water resistance and solvent resistance, and its tensile strength, 300% modulus stress and elongation at break have good stability after soaking in different solvents, and it can be used as a liquid level sensor The cable sheath can improve the service life and detection accuracy of the liquid level sensor.

Description

technical field [0001] The invention relates to the technical field of TPU composite cable materials, in particular to a TPU composite cable material used for liquid level sensors and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane elastomer rubber (TPU) is a polymer material formed by the reaction and polymerization of diphenylmethane diisocyanate (MDI), toluene diisocyanate (TDI), macromolecular polyols, and chain extenders. It is a thermoplastic material that can be processed repeatedly without cross-linking at a certain temperature, but it can maintain its shape at room temperature and play the role of support and protection. TPU is mainly divided into polyester type and polyether type. It has a wide range of hardness, high wear resistance, cold resistance, oil resistance, water resistance, mold resistance, and good elasticity. It can be widely used in soft, wear-resistant, oil-resistant, chemical-resistant Power supply cables for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/08C08L23/08C08L23/06C08K5/526C08K5/1515C08K5/098H01B3/30
CPCC08L75/08H01B3/302C08L2203/202C08L2207/066C08L2205/025C08L2205/035C08L2207/04C08L23/0853C08L23/06C08K5/526C08K5/1515C08K5/098
Inventor 黄志良张军王蕾田笑朱明澈
Owner ANHUI SURXIN WIRE & CABLE CO LTD
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