Physical foaming thermoplastic elastomer composition for floating cable and preparation method thereof

A thermoplastic elastomer and physical foaming technology, applied in the field of thermoplastic elastomer compositions, can solve the problems of the water-blocking layer of the foamed sheath, poor resistance to flexing, poor fatigue resistance of the sheath layer, and temperature sensitivity, etc., to achieve development Uniform cells, smooth surface, and improved polarity

Active Publication Date: 2019-07-09
广州敬信高聚物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, a kind of floating cable disclosed by Chinese patent authorization announcement number CN2528083Y adopts a foamed polyethylene-solid light-resistant and heat-resistant polyethylene structure. This patent basically solves the problem of light weight and being able to float on water, but there is a sheath layer poor fatigue resistance
A kind of floating cable disclosed by Chinese patent authorization announcement number CN101299355A also has the problem that the water blocking layer of the foamed sheath is not resistant to flexing
Foamed polyethylene mostly uses azodicarbonamide foaming agent. This foaming agent is sensitive to temperature, has a large gas volume and rapid gas generation, and the foaming temperature range can be adjusted. It can obtain polyethylene with uniform cells and smooth surface. but not environmentally friendly

Method used

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  • Physical foaming thermoplastic elastomer composition for floating cable and preparation method thereof
  • Physical foaming thermoplastic elastomer composition for floating cable and preparation method thereof

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preparation example Construction

[0034] A method for preparing a physically foamed thermoplastic elastomer composition for floating cables, comprising:

[0035] Mixing steps: Add SEBS and white mineral oil to a mixer with a rotation speed of 300-600r / min and stir for 3-5 minutes according to the formula ratio, then add polypropylene, polyolefin elastomer, maleic anhydride compatibilizer, silicone masterbatch, Foaming agent, antioxidant, stirring for 25-30 minutes to obtain a mixture;

[0036] Extrusion step: Pour the mixture into an extruder to melt and granulate at a temperature of 140-170° C. and an extrusion speed of 200-350 rpm to obtain a physically foamed thermoplastic elastomer composition.

[0037] As a further embodiment, the extruder is a co-rotating twin-screw extruder with an aspect ratio of 40-48.

Embodiment 1

[0041] A physical foaming thermoplastic elastomer composition for floating cables comprises the following components by weight: 20 parts of softening plasticizer, 32 parts of SEBS, 28 parts of polypropylene, 10 parts of polyolefin elastomer, 8 parts of compatibilizer 1 part, 2 parts of silicone masterbatch, 1 part of foaming agent, 0.1 part of antioxidant.

[0042] A method for preparing a physically foamed thermoplastic elastomer composition for floating cables, comprising:

[0043]Mixing steps: Add SEBS and white mineral oil to a mixer with a rotation speed of 300r / min and stir for 3 minutes according to the formula ratio, then add polypropylene, polyolefin elastomer, maleic anhydride compatibilizer, silicone masterbatch, foaming agent, antioxidant, stirred for 25 minutes to obtain a mixture;

[0044] Extrusion step: Pour the mixture into an extruder to melt and granulate it at a temperature of 140° C. and an extrusion speed of 200 rpm to obtain a physically foamed thermopl...

Embodiment 2

[0047] A physical foaming thermoplastic elastomer composition for floating cables comprises the following components by weight: 22 parts of softening plasticizer, 31 parts of SEBS, 27 parts of polypropylene, 10 parts of polyolefin elastomer, 8 parts of compatibilizer 1 part, 2 parts of silicone masterbatch, 1 part of foaming agent, 0.1 part of antioxidant.

[0048] A method for preparing a physically foamed thermoplastic elastomer composition for floating cables, comprising:

[0049] Mixing steps: Add SEBS and white mineral oil to a mixer with a speed of 600r / min and stir for 5 minutes according to the formula ratio, then add polypropylene, polyolefin elastomer, maleic anhydride compatibilizer, silicone masterbatch, foaming agent, antioxidant, stirred for 30 minutes to obtain a mixture;

[0050] Extrusion step: Pour the mixture into an extruder to melt and granulate it at a temperature of 170° C. and an extrusion speed of 350 rpm to obtain a physically foamed thermoplastic el...

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Abstract

The invention discloses a physical foaming thermoplastic elastomer composition for a floating cable. The physical foaming thermoplastic elastomer composition comprises the following components in parts by weight: 20 to 50 parts of softening plasticizer; 28 to 35 parts of SEBS (styrene-ethylene-butadiene-styrene) 25 to 28 parts of polypropylene, 8 to 12 parts of polyolefin elastomer, 5 to 9 parts of a compatilizer, 1 to 2 parts of silicone master batch, 0.5 to 1 part of a foaming agent and 0.05 to 0.1 part of an antioxidant. The invention also discloses a preparation method of the physical foaming thermoplastic elastomer composition for the floating cable. The physical foaming thermoplastic elastomer composition for the floating cable has the characteristics of uniform foam holes, good mechanical property, low-temperature resistance and good weather resistance; and the floating cable prepared from the composition has the advantages of good mechanical property, fatigue resistance, lightand heat resistance and uniform foaming, and can be well bonded with part of polar materials.

Description

technical field [0001] The invention relates to a thermoplastic elastomer composition, in particular to a physically foamed thermoplastic elastomer composition for floating cables and a preparation method thereof. Background technique [0002] In recent years, the development of the ocean has continued to increase, and there are more and more equipment used for offshore operations and detection. The charging and communication cables used for these equipment generally use ordinary cables. Ordinary cables are difficult to support on the sea, and are easy to scratch with hard objects on the river bed, causing damage and affecting their use. Excessively high specific gravity is also not conducive to long-term repeated retracting and unwinding operations, and the cables are prone to fatigue and cracking. And existing technology adopts foamed polyethylene more. For example, a kind of floating cable disclosed by Chinese patent authorization announcement number CN2528083Y adopts f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/02C08L23/12C08L51/00C08L23/00C08J9/32
CPCC08J9/32C08J2353/02C08J2423/12C08J2451/00C08J2423/00C08J2203/22
Inventor 陈良赵志明
Owner 广州敬信高聚物科技有限公司
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