Cold pressure-sensitive adhesive tape for pipeline anticorrosion

A technology of cold-winding pressure-sensitive adhesive tape and pressure-sensitive adhesive layer, which is applied in the direction of pipeline anticorrosion/rust protection, pipeline protection, adhesives, etc., and can solve problems such as complex construction, non-compliance with environmental protection requirements, and environmental and human damage. Convenience, excellent anti-corrosion effect, and simplified construction process

A technology of cold-winding pressure-sensitive adhesive tape and pressure-sensitive adhesive layer, which is applied in the direction of pipeline anticorrosion/rust protection, pipeline protection, adhesives, etc., and can solve problems such as complex construction, non-compliance with environmental protection requirements, and environmental and human damage. Convenience, excellent anti-corrosion effect, and simplified construction process

CN103602273AInactive Publication Date: 2014-02-26JIANGSU DASHENG HEAT SHRINKABLE MATERIALS
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  • Cold pressure-sensitive adhesive tape for pipeline anticorrosion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Weigh each component according to the pressure-sensitive adhesive layer material formula: 50 parts of butyl rubber, 25 parts of polyisobutylene, 17 parts of a mixture of C5 petroleum resin and terpene resin, 4 parts of environmentally friendly aromatic oil, 0.5 parts of antioxidant Composite antioxidant of 246 and zinc dibutyldithiocarbamate, 3.5 parts of light calcium carbonate with an average particle size of 0.1-3μm, put the raw materials of each component into the internal mixer, heat to 130°C, and stir for 20 Minutes, then continue to heat up to 160 ° C, keep warm and continue to stir for 30 minutes to obtain a transparent, uniform viscous liquid;

[0022] (2) putting the transparent and uniform viscous liquid prepared in step (1) into an extruder to melt and extrude it to obtain a pressure-sensitive adhesive;

[0023] (3) Coat the pressure-sensitive adhesive prepared in step (2) on the base film of the high-density polyethylene sheet by an automatic coating ma...

Embodiment 2

[0026] (1) Weigh each component according to the material formula of the pressure-sensitive adhesive layer: 40 parts of butyl rubber, 35 parts of polyisobutylene, 10 parts of rosin glyceride, a mixture of C5 petroleum resin, 8 parts of dibutyl phthalate, 0.5 The composite antioxidant of 246 parts of antioxidant and zinc dibutyldithiocarbamate, 6.5 parts of light calcium carbonate with an average particle size of 0.1 to 3 μm, put the raw materials of each component into the internal mixer, and heat to 130 ℃, stir for 20 minutes, then continue to heat up to 160 ℃, keep warm and continue stirring for 30 minutes to obtain a transparent and uniform viscous liquid;

[0027] (2) putting the transparent and uniform viscous liquid prepared in step (1) into an extruder to melt and extrude it to obtain a pressure-sensitive adhesive;

[0028] (3) Coat the pressure-sensitive adhesive prepared in step (2) on the base film of the high-density polyethylene sheet by an automatic coating machin...

Embodiment 3

[0031] (1) Weigh each component according to the pressure-sensitive adhesive layer material formula: 55 parts of butyl rubber, 20 parts of polyisobutylene, 20 parts of a mixture of C5 petroleum resin and terpene resin, 1 part of environmentally friendly aromatic oil, 0.5 parts of antioxidant Composite antioxidant of 246 and zinc dibutyldithiocarbamate, 3.5 parts of light calcium carbonate with an average particle size of 0.1-3μm, put the raw materials of each component into the internal mixer, heat to 130°C, and stir for 20 Minutes, then continue to heat up to 160 ° C, keep warm and continue to stir for 30 minutes to obtain a transparent, uniform viscous liquid;

[0032] (2) putting the transparent and uniform viscous liquid prepared in step (1) into an extruder to melt and extrude it to obtain a pressure-sensitive adhesive;

[0033] (3) Coat the pressure-sensitive adhesive prepared in step (2) on the base film of the high-density polyethylene sheet by an automatic coating mac...

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Abstract

The invention provides a cold pressure-sensitive adhesive tape for pipeline anticorrosion. The cold pressure-sensitive adhesive tape can be directly used in the steel pipeline anticorrosion without a primer. The cold pressure-sensitive adhesive tape comprises a base film layer and a pressure-sensitive adhesive layer, wherein the base film layer is a high-density polyethylene sheet, and has a thickness of 0.1-0.3mm; and the pressure-sensitive adhesive layer comprises, by weight, 40-55 parts of butyl rubber, 20-35 parts of polyisobutylene, 10-25 parts of a tackifying resin, 1-8 parts of a plasticizing system, 0.1-1 part of an antioxidant, and 3-6 parts of an inorganic filler, wherein the tackifying resin is one or more of rosin glyceride, a C5 petroleum resin and a terpene resin. The cold pressure-sensitive adhesive tape can be directly used in the steel pipeline anticorrosion without a primer, so the pollution of benzene or gasoline organic solvents in the primer to the environment is avoided, and the construction technology is simplified, thereby the cold pressure-sensitive adhesive tape can be adapted to the anticorrosion of many types of pipelines.

Description

technical field [0001] The invention relates to pipeline anticorrosion, in particular to a cold-wound pressure-sensitive adhesive tape for pipeline anticorrosion. Background technique [0002] Corrosion of steel is one of the main problems affecting the development of the petroleum industry. Solving the corrosion of pipelines is a necessary condition for the substantial development of the industry and energy conservation and environmental protection. In the field of pipeline anticorrosion, the traditional method mainly uses asphalt-based adhesives as the adhesive for steel pipelines. However, as time goes by, the bonding strength of asphalt adhesives gradually decreases, and the anticorrosion layer is easily damaged. There are already several operating pipelines that are in desperate need of repairs. The existing 3PE anti-corrosion method is not suitable for the repair of the operating oil pipeline due to the need for open flame baking during construction. Therefore, the u...

Claims

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Application Information

Patent Timeline
26 Feb 2014
Publication
CN103602273A
IPC
C09J7/02; C09J123/22; C09J123/20; C09J193/04; C09J157/02; C09J145/00; C09J11/04; C09J11/06; F16L58/00
Inventors
杨军伟; 张志强