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Visco-elastic antiseptic paste, and preparation method thereof

A technology of anti-corrosion paste and viscoelasticity, which is applied in the field of viscoelastic anti-corrosion paste and its preparation. It can solve the problems of poor anti-corrosion protection effect and difficult construction of special-shaped equipment, and achieve the effect of long-term anti-corrosion protection, excellent water resistance and improved sealing.

Inactive Publication Date: 2012-03-28
JIANGSU DASHENG HEAT SHRINKABLE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of poor anti-corrosion protection effect and difficult construction of special-shaped equipment, one of the technical problems to be solved by the present invention is to provide a viscoelastic anti-corrosion paste

Method used

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  • Visco-elastic antiseptic paste, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 20 kilograms of low-molecular-weight polyisobutylene; 50 kilograms of medium-molecular-weight polyisobutylene; 29.7 kilograms of talcum powder; 0.2998 kilograms of 1010 antioxidant; 0.0002 kilograms of titanium cyanine blue.

[0035] The number average molecular weight of the low molecular weight polyisobutylene is 2500. The viscosity-average molecular weight of the medium molecular weight polyisobutylene is 90,000.

[0036] The preparation method of viscoelastic anticorrosion paste consists of the following steps:

[0037] Add low-molecular-weight polyisobutylene, medium-molecular-weight polyisobutylene and antioxidant into a kneader for 30-60 minutes; the temperature of the kneader is controlled at 110-150°C.

[0038] Add inorganic fillers to the kneader and continue kneading. The kneading time is 40-70 minutes.

[0039] Then add pigment, continue kneading for 20-50 minutes, and discharge. The viscoelastic anticorrosion paste of the present invention can be prepare...

Embodiment 2

[0041] 15 kg of low molecular weight polyisobutene; 45 kg of medium molecular weight polyisobutene; 39.7 kg of precipitated barium sulfate; 0.2996 kg of 1010 antioxidant; 0.0004 kg of titanium cyanine blue.

[0042] The number average molecular weight of the low molecular weight polyisobutylene is 3000. The viscosity-average molecular weight of the medium molecular weight polyisobutylene is 30,000.

[0043] Prepare according to the method of Example 1.

Embodiment 3

[0045] 18 kg of low molecular weight polyisobutene; 54 kg of medium molecular weight polyisobutene; 14 kg of precipitated barium sulfate; 13.7 kg of talcum powder; 0.2997 kg of 1010 antioxidant; 0.0003 kg of titanium cyanine blue.

[0046] The number average molecular weight of the low molecular weight polyisobutylene is 2700. The viscosity-average molecular weight of the medium molecular weight polyisobutylene is 50,000.

[0047] Prepare according to the method of Example 1.

[0048] The viscoelastic anticorrosion paste of Examples 1-3 is tested, and the specific performance data are shown in the following table 1:

[0049] Table 1: Test Data Table

[0050] project Example 1 Example 2 Example 3 Adhesion 0.125 N / mm 2 0.132 N / mm 2 0.129N / mm 2 water absorption 0.03% 0.035% 0.032% Dripping at 85°C no dripping no dripping no dripping 23°C, 30 days cathodic stripping No cathodic stripping No cathodic stripping No cathodi...

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Abstract

The invention discloses a visco-elastic antiseptic paste, and a preparation method thereof. The visco-elastic antiseptic paste comprises components of, by weight: 10 to 30 parts of low-molecular-weight polyisobutylene, 40 to 60 parts of middle-molecular-weight polyisobutylene, 20 to 50 parts of an inorganic filling material, 0.2 to 0.5 parts of an antioxidant, and 0.0001 to 0.0005 parts of a pigment. According to the invention, low-molecular-weight polyisobutylene, middle-molecular-weight polyisobutylene and the antioxidant are kneaded in a kneading machine; the inorganic filling material is added into the kneading machine, and the mixture is kneaded; the pigment is added into the kneading machine, and the mixture is kneaded; and the obtained mixture is fetched, such that the visco-elastic antiseptic paste is obtained. With the method provided by the invention, the adhesion of the visco-elastic antiseptic paste provided by the invention reaches 0.125N / mm<2>, and the water absorption rate of the visco-elastic antiseptic paste is only 0.03%. With the visco-elastic antiseptic paste, no drop pendent appears under a temperature of 85 DEG C, and no cathode protection dissection or chemical mediator corrosion is occurred during a long-term test. Therefore, the visco-elastic antiseptic paste is suitable to be used in long-term antiseptic protections of metal equipments.

Description

technical field [0001] The invention relates to an anti-corrosion chemical product and a preparation method thereof, in particular to a viscoelastic anti-corrosion paste and a preparation method thereof. Background technique [0002] Nowadays, cold wrapping tapes, heat shrinkable wrapping tapes and other heat shrinkable products are mostly used for anticorrosion protection of special-shaped equipment such as flanges, valves, and various pipe fittings. Corrosion cannot be effectively resisted. At the same time, due to the extremely irregular surface shape of the special-shaped equipment, it has brought serious difficulties to the construction. When using products such as cold wrapping tapes for construction, it is difficult to achieve complete bonding coverage. From another aspect, it also has a negative impact on corrosion protection. Therefore, it is urgent to develop a product with good anti-corrosion effect and easy construction to be applied to the anti-corrosion prote...

Claims

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Application Information

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IPC IPC(8): C08L23/22C08K13/02C08K3/30C08K3/34C08K5/134
Inventor 赵秋峰饶学武
Owner JIANGSU DASHENG HEAT SHRINKABLE MATERIALS
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