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Super-soft weather-proof polyolefin special cable material as well as preparation method and application thereof

A super-flexible weather-resistant, polyolefin technology, used in circuits, electrical components, plastic/resin/wax insulators, etc., can solve the problems of insufficient softness of cable materials and poor weatherability, and achieve improved weatherability, delay aging, change The effect of flexibility

Pending Publication Date: 2020-11-03
杭州科佳新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a super-soft and weather-resistant polyolefin special cable material and its preparation method and application, so as to solve the problem that the existing cable material is not soft enough and has poor weather resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0039] The preparation method of the super-flexible weather-resistant polyolefin special cable material includes the following steps:

[0040] Stirring step: mix the low density polyethylene, ethylene-vinyl acetate copolymer, EPDM rubber, maleic anhydride graft compatibilizer, antioxidant, masterbatch, lubricant, and ultraviolet absorber through a mixer in proportion mixing;

[0041] Extrusion molding step: at 180°C to 220°C, the mixed components are pelletized by a twin-screw extruder under the condition of vacuum negative pressure of -0.08MPa to obtain the super-flexible weather-resistant polyolefin special cable material .

[0042] Further, after the extrusion molding, a detection step is also included: sending the molded super-flexible weather-resistant polyolefin special cable material to an inspection center for full performance testing.

[0043] In application, the prepared super-flexible weather-resistant polyolefin special cable material has no plasticizer, low cost, simple ...

Embodiment 1

[0045] The super-flexible weather-resistant polyolefin special cable material includes: low-density polyethylene, ethylene-vinyl acetate copolymer, EPDM, maleic anhydride graft compatibilizer, dioctadecyl thiodipropionate, color The weight ratio of masterbatch, polyethylene wax, and ultraviolet absorber UV531 is 70:8:20:3:0.5:2:0.5:0.5.

[0046] The method for preparing the above-mentioned super-flexible weather-resistant polyolefin special cable material includes the following steps:

[0047] (1) Combine low-density polyethylene, ethylene-vinyl acetate copolymer, EPDM rubber, maleic anhydride graft compatibilizer, dioctadecyl thiodipropionate, masterbatch, polyethylene wax, ultraviolet light The absorbent UV531 is mixed by a high-speed mixer in a ratio of 70:8:20:3:0.5:2:0.5:0.5 in parts by weight;

[0048] (2) The mixed components are pelletized by a twin-screw extruder at 200°C and a vacuum negative pressure of -0.08 MPa to obtain the super-flexible weather-resistant polyolefin s...

Embodiment 2

[0051] The super-flexible weather-resistant polyolefin special cable material includes: low-density polyethylene, ethylene-vinyl acetate copolymer, EPDM, maleic anhydride graft compatibilizer, dioctadecyl thiodipropionate, color Masterbatch, polyethylene wax, UV absorber bisphenol A salicylate, the weight ratio of the components is: 80:10:305:0.8:2:0.5:4.

[0052] The method for preparing the above-mentioned super-flexible weather-resistant polyolefin special cable material includes the following steps:

[0053] (1) Combine low-density polyethylene, ethylene-vinyl acetate copolymer, EPDM rubber, maleic anhydride graft compatibilizer, dioctadecyl thiodipropionate, masterbatch, polyethylene wax, ultraviolet light The absorbent bisphenol A salicylate is mixed by a high-speed mixer at a ratio of 80:10:30:5:0.8:2:0.5:4 in parts by weight;

[0054] (2) The mixed components are pelletized by a twin-screw extruder at 220°C and a vacuum negative pressure of -0.08 MPa to obtain the super-flex...

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Abstract

The invention provides a super-soft weather-proof polyolefin special cable material as well as a preparation method and application thereof. The super-soft weather-proof polyolefin special cable material comprises the following components in parts by weight: 60-80 parts of low-density polyethylene; 5-10 parts of an ethylene vinyl acetate copolymer; 10-30 parts of ethylene propylene diene monomer rubber; 2-5 parts of a maleic anhydride grafted compatilizer; 0.2-0.8 part of an antioxidant; 2 parts of color master batch; 0.5 part of a lubricant; and 0.1-4 part of an ultraviolet light absorber UV531 or bisphenol A salicylate. The low-density polyethylene, the ethylene-vinyl acetate copolymer and the ethylene-propylene-diene monomer rubber material are grafted and blended through a maleic anhydride grafting compatilizer, so that the hardness and the flexibility of a polyethylene material are changed. By adding the ultraviolet light absorber UV531 or bisphenol A salicylate, the weather resistance of the cable material can be improved, and aging is delayed.

Description

Technical field [0001] The invention relates to the field of cable materials, in particular to a super-flexible weather-resistant polyolefin special material and a preparation method and application thereof. Background technique [0002] At present, ordinary flexible cable materials are generally made of rubber or soft PVC (polyvinyl chloride) materials, but PVC materials have high hardness and are not soft enough. The tear resistance of rubber materials is relatively poor. Many cables need to be laid in outdoor environments or other harsh environments. Cables need to withstand the test of weather, such as the comprehensive damage caused by sunlight, heat, cold, wind and rain, bacteria, etc., that is, the cables need to have excellent weather resistance to meet the current increasing Strict performance requirements. However, the existing cable materials are prone to a series of aging phenomena such as fading, discoloration, cracking, pinking, and strength reduction when affecte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08L23/16C08L51/00C08K5/132C08K5/372C08K5/134H01B3/44
CPCC08L23/06H01B3/441C08L2205/025C08L2205/035C08L2201/08C08L2203/202C08L2207/066C08L23/0853C08L23/16C08L51/00C08K5/132C08K5/372C08K5/1345
Inventor 范嘉骏舒梁军范金伟
Owner 杭州科佳新材料股份有限公司