Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ultraviolet irradiation low-smoke halogen-free material for optical cables

A technology of ultraviolet light and irradiation, used in plastic/resin/wax insulators, organic insulators, electrical components, etc., can solve the problems of uneven thickness of optical cable sheath, low melt strength, casing collapse, etc. Uniform and stable thickness, excellent mechanical properties, and stable outer diameter

Active Publication Date: 2020-03-24
ADVANCED THERMOPLASTIC POLYMER TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the outer sheath of the optical cable is a hollow tubular structure, there is a certain gap between the optical fibers distributed inside it, and when the ultraviolet light is irradiated, the irradiation equipment is installed between the head of the extruder and the cooling water tank. When the outer sheath is used, when the newly extruded sheath enters the ultraviolet light irradiation equipment and passes through the irradiation space of more than one meter, the material is always in a molten state. The melt strength of traditional materials is not high, and it is easy to The casing collapsed, resulting in problems such as uneven thickness and poor roundness of the cable sheath

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0072] The second aspect of the present invention provides a method for preparing an optical cable by irradiating low-smoke and halogen-free materials with ultraviolet light, comprising the following steps:

[0073] Step a, adding the preparation raw materials into the internal mixer in parts by weight, heating and stirring evenly to obtain the mixture;

[0074] Step b, adding the mixture obtained in step a into a screw extruder, extruding and granulating to obtain a low-smoke and halogen-free material for optical cables irradiated with ultraviolet light.

[0075] In a preferred embodiment, the method for preparing the optical cable by irradiating low-smoke and halogen-free materials with ultraviolet light includes the following steps:

[0076] Step a. Add the preparation raw materials into the internal mixer in parts by weight, and heat and stir at 175° C. to obtain the mixture;

[0077] Step b, adding the mixture obtained in step a into a screw extruder, extruding and granu...

Embodiment 1

[0081] Embodiment 1 of the present invention provides a low-smoke and halogen-free material for optical cables irradiated with ultraviolet light, including the following preparation raw materials in parts by mass: 20 parts of EVA resin, 18 parts of PE resin, 5 parts of MAH modified resin, 46 parts of flame-retardant Agent, 1 part of light curing agent, 0.05 part of UV absorber, 1.5 parts of auxiliary agent.

[0082] The VA content of the EVA resin is 26 wt%, the melt flow rate at 190° C. and 2.16 kg is 4 g / 10 min, and the grade is Formosa Plastics 7470M. The density of the PE resin is 0.924g / cm 3 , The melt flow rate at 190°C and 2.16kg is 1.5g / 10min, and the grade is ExxonMobil LD368. The MAH modified resin is Honeywell A-C575P. The flame retardant is a mixture of zinc borate and polydimethylsiloxane, the mass ratio of the two is 1:0.4; the light curing agent is benzophenone; the ultraviolet absorber is UV-284; The auxiliary agent is antioxidant 1010.

[0083] The prepara...

Embodiment 2

[0087] Embodiment 2 of the present invention provides a low-smoke and halogen-free material for optical cables irradiated with ultraviolet light, including the following preparation raw materials in parts by mass: 18 parts of EVA resin, 16 parts of PE resin, 4 parts of MAH modified resin, 44 parts of flame-retardant agent, 0.5 part of light curing agent, 0.01 part of UV absorber, and 1 part of auxiliary agent.

[0088] The VA content of the EVA resin is 26 wt%, the melt flow rate at 190° C. and 2.16 kg is 4 g / 10 min, and the grade is Formosa Plastics 7470M. The density of the PE resin is 0.924g / cm 3 , The melt flow rate at 190°C and 2.16kg is 1.5g / 10min, and the grade is ExxonMobil LD368. The MAH modified resin is Honeywell A-C575P. The flame retardant is a mixture of zinc borate and polydimethylsiloxane, the mass ratio of the two is 1:0.4; the light curing agent is benzophenone; the ultraviolet absorber is UV-284; The auxiliary agent is antioxidant 1010.

[0089] The prep...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
melt flow indexaaaaaaaaaa
densityaaaaaaaaaa
melt flow indexaaaaaaaaaa
Login to View More

Abstract

The invention discloses an ultraviolet irradiation low-smoke halogen-free material for optical cables. The ultraviolet irradiation low-smoke halogen-free material for optical cables comprises the following raw materials by mass: 18-22 parts of EVA resin, 16-20 parts of PE resin, 4-6 parts of MAH modified resin, 44-70 parts of a flame retardant and 0.5-2 parts of a photocuring agent. The ultraviolet irradiation low-smoke halogen-free material for optical cables prepared according to the invention has excellent flame retardant properties; tensile strength test shows that the obtained material has excellent mechanical properties; shaping capability test indicates that optical cables prepared from the material is stable in outer diameter, good in roundness, and uniform and stable in skin thickness during online production, and has good temperature resistance and shaping capability.

Description

technical field [0001] The invention relates to the field of optical cable materials, in particular to a low-smoke and halogen-free material irradiated with ultraviolet light for optical cables. Background technique [0002] With the continuous development of communication technology, optical cable is an important medium for transmitting information and other data. It belongs to an important supporting industry for my country's economic construction and is widely used in various fields of national economy. For optical fibers, high flame retardant properties are required to prevent them from igniting and burning in the event of a fire, causing huge economic losses, threatening people's lives and property, and causing environmental pollution. At the same time, when the optical cables on the market are overhead or buried deep underground, their mechanical properties are insufficient, and they are prone to quality problems such as self-cracking and deformation. Moreover, the exi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06C08L83/04C08L51/06C08K13/02C08K3/38C08K5/07C08K5/42C08K5/134H01B3/44
CPCC08L23/0853H01B3/441C08L2203/202C08L2201/22C08L2201/08C08L2201/02C08L2205/035C08K2003/387C08L23/06C08L83/04C08L51/06C08K13/02C08K3/38C08K5/07C08K5/42C08K5/1345
Inventor 李同兵刘悦武涛钟荣栋
Owner ADVANCED THERMOPLASTIC POLYMER TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com