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Crosslinkable polymer composition comprising polymer blend of eva copolymer and ema copolymer

A technology of cross-linked polymers and compositions, applied in the direction of plastic/resin/wax insulators, organic insulators, electrical components, etc., can solve low smoke emission, melt viscosity reduction, mechanical properties tensile strength or elongation at break Reduce the problems such as to achieve the effect of enhancing oil resistance, low flame retardancy and low smoke emission performance

Pending Publication Date: 2019-03-15
NEXANS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is a problem that in order to provide a polymer with low smoke emission properties required for cables, a large amount of filler needs to be incorporated into the polymer
However, a large amount of fillers significantly reduces the mechanical properties of the composition, such as tensile strength or elongation at break, and reduces the melt viscosity of the polymer composition, thereby deteriorating the processability of the polymer composition, so , the amount of filler that can be included in the polymer composition is limited

Method used

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  • Crosslinkable polymer composition comprising polymer blend of eva copolymer and ema copolymer
  • Crosslinkable polymer composition comprising polymer blend of eva copolymer and ema copolymer

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Embodiment

[0051] Preparation of crosslinkable polymer composition and crosslinked product thereof ( Representative Preparation Example )

[0052] As a representative example of the method of preparing the crosslinkable polymer composition and the crosslinked product thereof according to the present invention, the ingredients and mixing ratios as shown in Table 1 were used to prepare the crosslinkable composition.

[0053] [Table 1]

[0054] Element

Ratio (phr)

EVA (EVAFLEX 45LX)

30

EMA (Vamac DP)

70

Aluminum Hydroxide (Apyral 40CD)

150

Antioxidant (Rhenofit DDA-70)

1.0

Antioxidant (Rhenogran PCD-50)

0.5

Organic Processing Aid (Armeen 18D)

1.0

Dialkyl peroxide (Perbutyl P)

2.0

[0055] In Table 1, phr refers to parts by weight relative to 100 parts by weight of the polymer blend, which is a blend of EVA and EMA.

[0056] First, the inventors mixed the following ingredients in the proportions discl...

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Abstract

The present invention relates to a crosslinkable polymer composition for use as a sheath layer of cable, and to a cable comprising a crosslinked layer obtained from said composition. The crosslinkablepolymer composition according to the present invention comprises a polymer blend of ethylene vinyl acetate copolymer and ethylene methyl acrylate copolymer, a flame retardant filler and a crosslinking agent.

Description

technical field [0001] The present invention relates to a crosslinkable polymer composition, preferably used as a sheath layer, comprising a polymer blend of ethylene-vinyl acetate copolymer and ethylene-methyl acrylate copolymer, Flame retardant filler and crosslinking agent. [0002] Furthermore, the invention relates to a cable comprising a crosslinked layer obtained from said crosslinkable polymer composition, said crosslinked layer being more preferably a sheath layer. Background technique [0003] In order to impart flame retardancy to the cable cushion or sheath, halogen-based compounds or flame-retardant fillers have been used in the related art. [0004] Halogenated compounds refer to polymers containing halogen atoms. Although halogen-based compounds have excellent flame retardancy regardless of the type of resin, they have a problem of emitting a large amount of toxic gas when burned. [0005] In order to solve this problem and provide polymer compositions with...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L33/08H01B3/44
CPCC08L23/0869C08L33/08H01B3/441H01B3/447H01B3/448C08L2203/202C08L23/0853C08K3/011C08K3/016C08K3/22C08K5/14C08F210/02C08F218/08C08K3/013C08K9/06H01B7/295C08L2666/84C08L2201/02C08L2201/08C08L2205/06C08L2312/00
Inventor 林钟赞金成津金权淳
Owner NEXANS
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