Laser marking halogen-free identification heat shrink tube and manufacturing method thereof

A technology of laser marking and heat-shrinkable tubes, which is applied in the field of heat-shrinkable materials, can solve problems such as unclear marking, compressed laser marking powder addition, and large loads of cable components.

Active Publication Date: 2021-01-12
大连联合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

The heat-shrinkable identification sleeve should not be too heavy, which will easily bring a large load to the cable components
A large amount of magnesium hydroxide, aluminum hydroxide, and phosphorus-nitrogen flame retardants are used in the heat-shrinkable marking sleeve in this patent. If the heat-shrinkable marking sleeve uses too much flame retardant under a certain weight, it will Compress the amount of laser marking powder added in the system, which will lead to unclear marking, and too much flame retardant will reduce the mechanical properties of the heat shrinkable marking sleeve
And when more magnesium hydroxide is used, the acid resistance of the heat-shrinkable marking sleeve will be reduced, which will affect the quality of the heat-shrinkable marking sleeve and shorten the service life of the heat-shrinkable marking sleeve

Method used

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  • Laser marking halogen-free identification heat shrink tube and manufacturing method thereof
  • Laser marking halogen-free identification heat shrink tube and manufacturing method thereof
  • Laser marking halogen-free identification heat shrink tube and manufacturing method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0045] As a preferred technical solution, the preparation method of the laser marking powder at least includes the following steps:

[0046] (1) adding polyethylene succinate into an organic solvent, and performing ultrasound under the condition of 60-70° C., to prepare a mixed solution A;

[0047] (2) Add titanium dioxide to the mixed solution A, and perform ultrasonication. After the ultrasonication is completed, place it in an oven at 80-90°C for drying, so that the organic solvent is completely evaporated, and the mixture B is obtained;

[0048] (3) Add carbon nanotubes to ethanol and perform ultrasonication. After the ultrasonication is completed, add it to mixture B and dry it in an oven at 50-60°C to completely evaporate the ethanol to obtain laser marking. pink.

[0049] plasticizer

[0050] As a more preferred technical solution, the plasticizer is a mixture of citrates and stearates, and the weight ratio of the citrates and stearates is (3-5):1.

[0051] As a more...

Embodiment 1

[0078] In this embodiment, a heat-shrinkable tube with a laser marking halogen-free mark, in parts by weight, its preparation raw materials include 10 parts of polyethylene, 15 parts of flame retardant, 15 parts of laser marking powder, 1 part of plasticizer, 25 parts of ethylene-vinyl acetate copolymer and 1 part of auxiliary agent, and the flame retardant is a non-halogen flame retardant. The polyethylene includes a density of 0.9225g / cm 3 , polyethylene A with a melt index of 0.25g / 10min and a density of 0.9240g / cm 3 , polyethylene B with a melt index of 1.9 g / 10 min. The weight ratio of polyethylene A and polyethylene B is 3:2.

[0079] The grade of the polyethylene A is: China Shipping Shell 2420D; the grade of the polyethylene B is: China Shipping Shell 2420H.

[0080] The non-halogen flame retardant is a mixture of inorganic non-halogen flame retardants and organic non-halogen flame retardants.

[0081] The inorganic non-halogen flame retardant is magnesium hydroxid...

Embodiment 2

[0096] In this embodiment, a heat-shrinkable tube with a laser marking halogen-free mark, in parts by weight, its preparation raw materials include 12 parts of polyethylene, 25 parts of flame retardant, 20 parts of laser marking powder, 3 parts of plasticizer, 48 parts of ethylene-vinyl acetate copolymer and 2 parts of auxiliary agent, and the flame retardant is a non-halogen flame retardant. The polyethylene includes a density of 0.9225g / cm 3 , polyethylene A with a melt index of 0.25g / 10min and a density of 0.9240g / cm 3 , polyethylene B with a melt index of 1.9 g / 10 min. The weight ratio of polyethylene A and polyethylene B is 3:2.

[0097] The grade of the polyethylene A is: China Shipping Shell 2420D; the grade of the polyethylene B is: China Shipping Shell 2420H.

[0098] The non-halogen flame retardant is a mixture of inorganic non-halogen flame retardants and organic non-halogen flame retardants.

[0099] The inorganic non-halogen flame retardant is magnesium hydrox...

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Abstract

The invention provides a laser marking halogen-free marking heat shrinkable tube which is prepared from the following raw materials in parts by weight: 10-40 parts of polyethylene, 15-45 parts of a flame retardant, 15-30 parts of laser marking powder, 1-10 parts of a plasticizer, 25-75 parts of an ethylene-vinyl acetate copolymer and 1-8 parts of an assistant, wherein the flame retardant is a halogen-free flame retardant. According to the technical scheme, the organic halogen-free flame retardant and the inorganic halogen-free flame retardant are mixed, so that the whole material can still obtain better flame retardant property under the condition of less use, the content of the laser marking powder in the whole material can be ensured, the marking definition is improved, and the acid resistance of the whole material is not influenced. According to the technical scheme, all the components are green and non-toxic, and good environmental protection performance is achieved.

Description

technical field [0001] The invention belongs to the field of heat-shrinkable materials, and in particular relates to a laser-marked halogen-free label heat-shrinkable tube and a manufacturing method thereof. Background technique [0002] Due to the insulation, wear resistance, waterproof and other functions of the heat shrinkable tube, it is generally used for cable connection and protection, such as cable intermediate connection, cable terminal connection, and cable outer layer protection. The cable components are dense. In order to accurately identify the wiring at both ends of the cable components, the heat shrinkable tube is usually laser marked to mark the cable components. By adding laser marking powder to the raw materials for the preparation of the heat shrinkable tube, when the high energy density laser irradiates the heat shrinkable tube, the laser marking powder absorbs the energy of the laser, converts the laser beam into heat energy, and heats the heat shrinkabl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06C08L67/02C08K13/02C08K3/22C08K5/3492C08K5/5313C08K3/04C08K5/521
CPCC08L23/0853C08L2201/22C08L2201/02C08L2203/18C08L2205/025C08L2205/035C08L2312/06C08K2003/2224C08K2201/011C08L23/06C08L67/02C08K13/02C08K3/22C08K5/34922C08K5/5313C08K3/041C08K5/3492C08K5/521
Inventor 杨洋
Owner 大连联合高分子材料有限公司
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