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Anti-ageing matt polyurethane composition and preparation method thereof

A technology of polyurethane and composition, which is applied in the field of aging-resistant matte polyurethane composition and its preparation, and can solve the problems of poor long-term aging resistance, easy cross-linking or fracture, and poor long-term aging resistance of wires and cables.

Inactive Publication Date: 2015-04-08
马艳荣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, rubber-like substances have the defect of poor long-term aging resistance. The main reason is that the rubber molecular chain contains a large number of unsaturated double bonds. During the use of wires and cables, unsaturated double bonds are easy to cross-link or break, resulting in wire The long-term aging resistance of the cable is poor

Method used

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  • Anti-ageing matt polyurethane composition and preparation method thereof
  • Anti-ageing matt polyurethane composition and preparation method thereof
  • Anti-ageing matt polyurethane composition and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] An aging-resistant matte polyurethane composition, comprising the following components in parts by weight:

[0026]

[0027] The thermoplastic polyurethane is polyester polyurethane.

[0028] The fogging agent is styrene block copolymer (SEBS).

[0029] The amino-terminated polyether is polyetheramine D-2000

[0030] The vulcanizing agent is sulfur.

[0031] The graft is an acrylate-maleic anhydride graft.

[0032] The softening agent is naphthenic rubber oil.

[0033] The matting agent is white carbon black

[0034] The processing aid is organosilicone.

[0035] The preparation method of described anti-aging matte polyurethane composition, comprises the steps:

[0036] 5) Weigh each component according to the formula and mix evenly;

[0037] 6) Put the mixture into a twin-screw extruder, melt and extrude at 160-180°C with a rotation speed of 350rpm, pelletize, and pack.

Embodiment 2

[0039] An aging-resistant matte polyurethane composition, comprising the following components in parts by weight:

[0040]

[0041]

[0042] The thermoplastic polyurethane is polyether polyurethane

[0043] The fogging agent is selected from styrene-ethylene-propylene-styrene block copolymers (SEPS).

[0044] The amino-terminated polyether is polyetheramine T-3000.

[0045] The graft is an acrylate-maleic anhydride graft.

[0046] Described softener is white mineral oil.

[0047] The matting agent is talcum powder.

[0048] The processing aid is a mixture of organic silicone and zinc stearate.

[0049] The preparation method of described anti-aging matte polyurethane composition, comprises the steps:

[0050] 7) Weigh each component according to the formula and mix evenly;

[0051] 8) Put the mixture into a twin-screw extruder, melt and extrude at 160-180°C with a rotation speed of 400rpm, pelletize, and pack.

Embodiment 3

[0053] An aging-resistant matte polyurethane composition, comprising the following components in parts by weight:

[0054]

[0055] The thermoplastic polyurethane is polycarbonate thermoplastic polyurethane.

[0056] The matting agent is selected from acrylate rubber.

[0057] The amino-terminated polyether is polyetheramine T-3000.

[0058] The vulcanizing agent is sulfur.

[0059] The graft is an acrylate-maleic anhydride graft.

[0060] The softening agent is selected from paraffinic rubber oil.

[0061] Described processing aid is stearic acid.

[0062] The matting agent is calcium carbonate.

[0063] The preparation method of the non-aging matte polyurethane composition comprises the steps of:

[0064] 9) Weigh each component according to the formula and mix evenly;

[0065] 10) Put the mixture into a twin-screw extruder, melt and extrude it at 160-200°C with a rotation speed of 200-500rpm, pelletize, and pack.

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Abstract

The invention provides an anti-ageing matt polyurethane composition, comprising the following components in percentage by weight: 30%-60% of thermoplastic polyurethane, 2%-10% of a matt agent, 5%-13% of amine-terminated polyether, 0-1% of a vulcanizing agent, 0-15% of graft, 0-25% of a softener, 1%-3% of a delustering agent and 0.5%-3% of a processing agent. According to the composition, rubber substances are replaced with high molecular weight amine-terminated polyether free of double bonds, thus the content of unsaturated double bonds in the composition is lowered; the composition has the advantages of excellent long-term ageing resistance, mechanical property and tensile break strength; and the matt degree of the surface of a cable or a wire prepared from the composition is kept.

Description

technical field [0001] The invention relates to polyurethane materials, in particular to an aging-resistant matte polyurethane composition and a preparation method thereof. Background technique [0002] TPU is thermoplastic polyurethane elastomer, which is widely used in various wires and cables, and gradually becomes an ideal substitute for PVC and PU materials. Thermoplastic polyurethane elastomer has good tear resistance, abrasion resistance and low and high temperature resistance. The surface of wire and cable products made of pure TPU raw materials through extrusion and processing is often hard, smooth and bright, lacking in texture and feel, and the surface is easy to scratch and unsightly. The usual practice is to add a matting agent, such as nano-zinc oxide, aluminum oxide, magnesium oxide or meteorological silica, to the TPU raw material to reduce the glossiness of the TPU product surface. However, the effect is limited. [0003] Chinese patent document CN1021993...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08L75/06C08L75/04C08L71/00C08L53/02C08K13/02C08K3/06C08K3/36C08K3/34C08K5/09C08K3/26C08K3/22
Inventor 张胜勇马艳荣
Owner 马艳荣
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