Improved foaming behaviour of polymer compositions using passive nucleation

A composition and polymer technology, used in the production of foamed polymer compositions and cables, which can solve problems such as negative environmental impact

Pending Publication Date: 2021-07-23
BOREALIS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such compounds used as co-blowing agents do have a negative impact on the environment

Method used

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  • Improved foaming behaviour of polymer compositions using passive nucleation
  • Improved foaming behaviour of polymer compositions using passive nucleation
  • Improved foaming behaviour of polymer compositions using passive nucleation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0062] 1. Measurement method

[0063] a) Melt flow rate

[0064] The melt flow rate (melt flow rate, MFR) was determined according to ISO 1133-1 and expressed in g / 10 min. MFR is an indicator of the fluidity of a polymer, and thus of its processability. The higher the melt flow rate, the lower the viscosity of the polymer.

[0065] Measure the MFR of polyethylene (co)polymer at a temperature of 190°C and a load of 2.16kg 2 . Measure the MFR of polypropylene (co)polymer at a temperature of 230°C and a load of 2.16 kg 2 .

[0066] b) Density of solid material

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Abstract

The present invention concerns a foamable polymer composition and a foamed polymer composition obtained by foaming this foamable polymer composition. The invention is also concerned with a cable comprising at least one layer which comprises the foamable polymer composition or the foamed polymer composition. The invention further provides a process for producing a foamed polymer composition.

Description

technical field [0001] The present invention relates to a foamable polymer composition and a foamed polymer composition obtained by foaming the foamable polymer composition. The invention also relates to a cable comprising at least one layer comprising said expandable polymer composition or said foamable polymer composition. The present invention further provides a method for producing a foamed polymer composition. Background technique [0002] Communication cables are used to transmit high frequency (HF) signals either by electromagnetic waves or as light pulses in fiber optic cables. An example of a communication cable is a coaxial cable. A coaxial cable consists of two separate parallel conductors arranged concentrically along the same axis and separated by an insulating dielectric. For example, foamed LDPE, alone or blended with another polymer, is commonly used to insulate communication cables such as coaxial and / or radio frequency cables. Foaming of the polymer com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/00
CPCC08L23/00C08L2203/14C08L2203/202C08L2205/02C08L2205/24C08J9/0061C08J9/0066C08J9/122C08J2203/06C08J2205/044C08J2323/06C08J2423/06C08J2201/03C08K3/34C08L23/06C08L2205/025C08L2207/062C08L2207/066
Inventor 阿沙·万纳斯科格安娜·海特福斯奥斯卡·普列托马丁·安克尔安·沃森
Owner BOREALIS AG
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