Cold-shrinkable foamed sleeve pipe, patterned sleeve pipe and preparation method thereof

The technology of sleeve and foaming agent is applied in the field of cold shrink sleeve and its preparation, which can solve problems such as sticking hands, and achieve the effects of improving production efficiency, reducing production cost and improving hand feeling.

Active Publication Date: 2014-07-16
SHENZHEN WOER HEAT SHRINKABLE MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the hardness of the above-mentioned cold-shrinkable sleeve, ...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Preparation of rubber compound: in parts by weight, 100 parts of EPDM rubber, 10 parts of carbon black, 5 parts of calcined clay, 1 part of sulfur, 1 part of zinc oxide, 3 parts of azodicarbonamide (AC) 1 part and 1 part of zinc stearate are mixed on an open mill to form a uniform rubber compound;

[0030] (2) Extrude pipe: Extrude the compounded rubber through an extruder to form a pipe;

[0031] (3) Vulcanization and foaming to prepare foamed pipes: pre-vulcanize the mixed rubber at a temperature of 110-140°C for the first time, and then undergo secondary vulcanization and foaming at a temperature of 180-250°C to form foamed pipes;

[0032] (4) Expansion, cooling and shaping: expand the foamed pipe with expansion equipment at a temperature of 120-150 ° C, and cool and shape to form a cold-shrinkable foam sleeve.

Embodiment 2

[0034] (1) Preparation of rubber compound: in parts by weight, 100 parts of silicone rubber, 60 parts of white carbon black, 30 parts of calcined clay, 3 parts of vulcanizing agent bis-25, 5 parts of active zinc oxide, dinitrosopenta Mix 18 parts of methyltetramine (foaming agent H) on an internal mixer to form a uniform rubber compound;

[0035] (2) Extrude pipe: Extrude the compounded rubber through an extruder to form a pipe;

[0036] (3) Vulcanization and foaming to prepare foamed pipes: pre-vulcanize the mixed rubber at a temperature of 110-140°C for the first time, and then undergo secondary vulcanization and foaming at a temperature of 180-250°C to form foamed pipes;

[0037] (4) Expansion, cooling and shaping: expand the foamed pipe with expansion equipment at a temperature of 120-150 ° C, and cool and shape to form a cold-shrinkable foam sleeve.

Embodiment 3

[0039] (1) Preparation of rubber compound: by weight, 100 parts of EPDM rubber, 120 parts of carbon black, 6 parts of dicumyl peroxide (DCP), 5 parts of active zinc oxide, 4,4'~ Mix 35 parts of oxybis(benzenesulfonyl hydrazide) and 8 parts of calcium stearate on an open mixer or internal mixer to form a uniform rubber compound;

[0040] (2) Extrude pipe: Extrude the compounded rubber through an extruder to form a pipe;

[0041] (3) Vulcanization and foaming to prepare foamed pipes: pre-vulcanize the mixed rubber at a temperature of 110-140°C for the first time, and then undergo secondary vulcanization and foaming at a temperature of 180-250°C to form foamed pipes;

[0042] (4) Expansion, cooling and shaping: expand the foamed pipe with expansion equipment at a temperature of 120-150 ° C, and cool and shape to form a cold-shrinkable foam sleeve.

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PUM

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Abstract

The invention discloses a cold-shrinkable foamed sleeve pipe which comprises the following raw materials in parts by weight: 100 parts of ethylene propylene diene monomer or silicone rubber, 10-120 parts of carbon black or white carbon black, 0-50 parts of inorganic fillers, 0.2-6 parts of a vulcanizing agent, 0.2-5 parts of an activating agent, 1-35 parts of a foaming agent and 0-10 parts of a foaming aid. A preparation process of the cold-shrinkable foamed sleeve pipe comprises the following steps of performing secondary vulcanization and foaming on the materials of the cold-shrinkable foamed sleeve pipe at 180-250 DEG C by adopting the foaming agent to form a foamed pipe material, performing decomposition reaction on the foaming agent, generating foams, and expanding, cooling and solidifying the foams. The process is simple, the production efficiency can be improved, and the production cost can be reduced. When the cold-shrinkable foamed sleeve pipe is applied, the negative phenomena of pricking of the hand and the like can be avoided, and the hand feel of the cold-shrinkable sleeve pipe held or gripped by people can be improved. The invention further provides a cold-shrinkable foamed anti-slip patterned sleeve pipe; a concave-convex pattern is arranged on the surface of the patterned sleeve pipe, so that the anti-slip effect can be further improved, and the hand feel of a heat-shrinkable sleeve pipe held or gripped by people can be improved.

Description

technical field [0001] The invention relates to a cold shrinkable sleeve and a preparation method thereof, in particular to a soft cold shrinkable sleeve and a preparation method thereof. Background technique [0002] At present, cold-shrinkable sleeves can be used in fishing tackle, various fitness equipment, various tool handles and handrails, etc., which can improve the hand feel and achieve anti-slip and decorative effects. [0003] However, due to the hardness of the above-mentioned cold shrinkable sleeve, it is easy to cause sticking phenomenon when holding it, especially when holding it for a long time. [0004] Therefore, the industry urgently needs a cold shrinkable sleeve with a certain degree of flexibility. Contents of the invention [0005] The object of the present invention is to provide a cold shrinkable sleeve with a certain degree of flexibility and a preparation method thereof. [0006] In order to achieve the above object, the present invention provi...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L83/04C08K13/02C08K3/04C08K3/36C08K3/34C08K3/26C08K3/22C08J9/10
CPCC08J9/103C08J9/105C08J9/107C08J2203/04C08J2323/16C08J2383/04C08K3/04C08K3/06C08K3/22C08K3/34C08K3/36C08K5/098C08K5/14C08K13/02C08K2003/2296C08L2203/14C08L2203/18C08L23/16C08L83/04
Inventor 邢福发周和平
Owner SHENZHEN WOER HEAT SHRINKABLE MATERIAL
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