High-temperature type viscoelastic body corrosion-preventing sealing adhesive tape and preparation method thereof

A technology of sealing tape and viscoelastic body, applied in chemical instruments and methods, non-polymer adhesive additives, adhesives, etc., can solve the problems of insufficient resistance to mechanical external forces, etc., and achieve long-term protection and high shear strength , Unique cold flow effect

Inactive Publication Date: 2012-03-21
JIANGSU DASHENG HEAT SHRINKABLE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the current problem of anti-corrosion effectiveness and long-term effect of oil and gas pipelines and special-shaped equipment, and at the same time solve the insufficient mechanical force resistance of ordina...

Method used

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  • High-temperature type viscoelastic body corrosion-preventing sealing adhesive tape and preparation method thereof
  • High-temperature type viscoelastic body corrosion-preventing sealing adhesive tape and preparation method thereof
  • High-temperature type viscoelastic body corrosion-preventing sealing adhesive tape and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Raw material ratio of viscoelastic rubber layer:

[0037] 5 kg of low molecular weight polyisobutene; 40 kg of medium molecular weight polyisobutene; 10 kg of high molecular weight polyisobutene; 44.7 kg of talcum powder; 0.2998 kg of 1010 antioxidant; 0.0002 kg of titanium cyanine blue.

[0038] The number average molecular weight of the low molecular weight polyisobutene is 2500; the viscosity average molecular weight of the medium molecular weight polyisobutene is 90000; the viscosity average molecular weight of the high molecular weight polyisobutene is 200000.

[0039] The preparation method of high temperature type viscoelastic anticorrosion sealing tape is as follows:

[0040] Step 1: Add low-molecular-weight polyisobutene, medium-molecular-weight polyisobutene, high-molecular-weight polyisobutene and antioxidant into a kneader for 30-60 minutes; the temperature of the kneader is controlled at 120-160°C.

[0041] Step 2, adding inorganic filler to the kneader to...

Embodiment 2

[0046] Raw material ratio of viscoelastic rubber layer:

[0047] 3 kg of low molecular weight polyisobutene; 41 kg of medium molecular weight polyisobutene; 7 kg of high molecular weight polyisobutene; 48.7 kg of precipitated barium sulfate; 0.5 kg of 1010 antioxidant; 0.0004 kg of titanium cyanine blue.

[0048] The number average molecular weight of the low molecular weight polyisobutene is 3000; the viscosity average molecular weight of the medium molecular weight polyisobutene is 30000; the viscosity average molecular weight of the high molecular weight polyisobutene is 400000.

[0049] The method of Example 1 was used to prepare the high-temperature type viscoelastic anti-corrosion sealing tape of the present invention.

Embodiment 3

[0051] Raw material ratio of viscoelastic rubber layer:

[0052] 4 kg of low molecular weight polyisobutene; 42 kg of medium molecular weight polyisobutene; 8 kg of high molecular weight polyisobutene; 23 kg of precipitated barium sulfate; 22.7 kg of talcum powder; 0.2997 kg of 1010 antioxidant; 0.0003 kg of titanium cyanine blue.

[0053]The number average molecular weight of the low molecular weight polyisobutene is 2800; the viscosity average molecular weight of the medium molecular weight polyisobutene is 50000; the viscosity average molecular weight of the high molecular weight polyisobutene is 300000.

[0054] The method of Example 1 was used to prepare the high-temperature type viscoelastic anti-corrosion sealing tape of the present invention.

[0055] The difference in performance between the high temperature type viscoelastic anti-corrosion sealing tape prepared by the present invention and the common type viscoelastic adhesive tape is as follows in Table 1:

[0056]...

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Abstract

The invention discloses a high-temperature type viscoelastic body corrosion-preventing sealing adhesive tape and a preparation method thereof. The high-temperature type viscoelastic body corrosion-preventing sealing adhesive tape is in a layer-shaped structure and is sequentially composed of a polyethylene film, a first viscoelastic body sizing layer, a polyethylene net layer, a second viscoelastic body sizing layer and a polyethylene terephthalate (PET) adhesion-preventing film. The first viscoelastic body sizing layer and the second viscoelastic body sizing layer are both composed of the following materials including, by weight, 2 to 5 parts of low molecular weight polyisobutene, 35 to 45 parts of medium molecular weight polyisobutene, 5 to 10 parts of high molecular weight polyisobutene, 40 to 50 parts of inorganic filler, 0.2 to 0.5 part of antioxidant and 0.0001 to 0.0005 part of pigment. The high-temperature type viscoelastic body corrosion-preventing sealing adhesive tape can be used for corrosion-preventing protection of oil and gas pipelines and abnormal devices, has unique cold flow property, can achieve a self-repairing function in the corrosion-preventing process, can thoroughly prevent moisture from invading simultaneously, thoroughly avoids microorganism corrosion, and has good long-acting protection.

Description

technical field [0001] The invention relates to a sealing tape and a preparation method thereof, in particular to a high-temperature type viscoelastic anti-corrosion sealing tape and a preparation method thereof. Background technique [0002] At present, the anti-corrosion protection of oil and gas pipelines and some long-term-used special-shaped metal equipment is particularly important, which is related to the service life of the equipment. At present, anti-corrosion products mostly use heat-shrinkable products, which have a long-term effect on construction and anti-corrosion protection. There are obvious deficiencies in sex. As a new anti-corrosion product, viscoelastic tape has unique cold flow characteristics. It can achieve self-healing function in the process of anti-corrosion and repair, so as to achieve a complete protection effect. Facts have proved that viscoelastic tape anti-corrosion products have more Excellent anti-corrosion protection effect. At the same tim...

Claims

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Application Information

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IPC IPC(8): C09J7/04C09J123/20C09J11/04C09J11/06C09K3/10
Inventor 赵秋峰杨军伟
Owner JIANGSU DASHENG HEAT SHRINKABLE MATERIALS
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