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Hot melt adhesive for quick joint coating of metallic pipeline and preparation method thereof

A technology for metal pipes and hot melt adhesives, applied in the direction of adhesives, graft polymer adhesives, adhesive types, etc., can solve the problems of unsatisfactory construction fluidity, poor weather resistance of anti-corrosion hot melt adhesives, etc. Vast, good high and low temperature resistance, the effect of improving adhesion

Inactive Publication Date: 2011-11-16
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is to overcome the problems of poor weather resistance and unsatisfactory construction fluidity of conventional pipeline joint anticorrosion hot melt adhesives, and to provide a high bonding strength, good weather resistance, and better construction. Fluid hot-melt adhesive for quick jointing of metal pipes and preparation method thereof

Method used

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  • Hot melt adhesive for quick joint coating of metallic pipeline and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Component proportion of anticorrosive hot melt adhesive for repairing metal pipes (wt%):

[0033] Styrene-isoprene-styrene block copolymer (SIS) 30

[0034] Styrene-butadiene-styrene block copolymer (SBS) 5

[0035] Ethylene-vinyl acetate copolymer (EVA) 5

[0036] Ethylene-ethyl acrylate copolymer (EEA) 5

[0037] Maleic anhydride grafted polyethylene (M-g-PE) 5

[0038] Naphthenic oil 15

[0039] C 5 Petroleum resin 15

[0040] Terpene phenol resin 14

[0041] Inorganic filler 5

[0042] Antioxidant 1

[0043] According to the measurement, the three components of SIS, SBS and naphthenic oil are oil-filled at 80°C for 30 minutes; then a certain proportion of antioxidant is added, kneaded in a kneader at high speed, and the temperature is set to 170°C; after stirring evenly Add EVA, EEA, Mg-PE, C in sequence 5 Petroleum resin, terpene phenol resin, filler, continue to stir and knead at 170°C at high speed. Finally, the uniformly kneaded hot melt adhesive is extruded through a twin-sc...

Embodiment 2

[0045] Component proportion of anticorrosive hot melt adhesive for repairing metal pipes (wt%):

[0046] Styrene-isoprene-styrene block copolymer (SIS) 35

[0047] Styrene-butadiene-styrene block copolymer (SBS) 5

[0048] Ethylene-ethyl acrylate copolymer (EEA) 5

[0049] Maleic anhydride grafted polyethylene (M-g-PE) 5

[0050] Naphthenic oil 17

[0051] C 5 Petroleum resin 14

[0052] Polymerized rosin 10

[0053] Inorganic filler 8

[0054] Antioxidant 1

[0055] According to the measurement, the three components of SIS, SBS and naphthenic oil are oil-filled at 80°C for 30 minutes; then a certain proportion of antioxidant is added, kneaded in a kneader at high speed, and the temperature is set to 170°C; after stirring evenly Add EEA, Mg-PE, C in sequence 5 Petroleum resin, polymerized rosin, and fillers are continuously stirred and kneaded at 170°C at high speed. Finally, the uniformly kneaded hot melt adhesive is extruded through a twin-screw extruder.

Embodiment 3

[0057] Component proportion of anticorrosive hot melt adhesive for repairing metal pipes (wt%):

[0058] Styrene-isoprene-styrene block copolymer (SIS) 30

[0059] Styrene-butadiene-styrene block copolymer (SBS) 5

[0060] Maleic anhydride grafted polyethylene (M-g-PE) 10

[0061] Naphthenic oil 15

[0062] C 5 Petroleum resin 10

[0063] Terpene phenol resin 10

[0064] Polymerized rosin 10

[0065] Inorganic filler 8

[0066] Antioxidant 2

[0067] According to the measurement, the three components of SIS, SBS and naphthenic oil are oil-filled at 80°C for 30 minutes; then a certain proportion of antioxidant is added, kneaded in a kneader at high speed, and the temperature is set to 170°C; after stirring evenly Add Mg-PE and C in sequence 5 Petroleum resin, terpene phenol resin, polymerized rosin, filler, continue to stir and knead at 170℃ at high speed. Finally, the uniformly kneaded hot melt adhesive is extruded through a twin-screw extruder.

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Abstract

The invention belongs to the technical field of pipeline joint coating anticorrosive hot melt adhesives, and particularly relates to a hot melt adhesive for quick joint coating of a metallic pipeline and a preparation method thereof. The hot melt adhesive comprises the following components in percentage by weight: 20 to 50 percent of styrene-isoprene-styrene block copolymer, 5 to 10 percent of styrene-butadiene-styrene block copolymer, 5 to 10 percent of ethylene-vinyl acetate copolymer, 5 to 10 percent of ethylene-ethyl acrylate copolymer, 5 to 10 percent of maleic anhydride grafted polyethylene, 10 to 25 percent of softening agent, 5 to 10 percent of inorganic filler, 0.1 to 2 percent of antioxidant and the balance of tackifying resin, wherein the total weight is 100 percent. The hot melt adhesive is prepared by kneading the components by a kneader at a high speed and extruding the mixture by a twin-screw extruder. Because the hot melt adhesive prepared by the method has high bonding strength, high weathering resistance and high construction mobility, the hot melt adhesive can be widely used in the field of quick joint coating and corrosion prevention of metallic pipelines.

Description

Technical field [0001] The invention belongs to the technical field of anticorrosive hot-melt adhesives for pipe joints, and in particular relates to a hot-melt adhesive applied to fast joints of metal pipes and a preparation method thereof. Background technique [0002] In the transportation of oil and gas, safe, reliable, fast and convenient metal pipelines are often used. In order to ensure the safe operation and service life of transportation pipelines, the first consideration in pipeline construction is pipeline corrosion protection. With the rapid growth of the national economy and the improvement of people's environmental awareness, more and more metal pipelines are being constructed, and the geological and climatic conditions that the pipelines pass through are becoming more and more severe, so that the requirements for pipeline anti-corrosion are becoming more and more stringent. The anti-corrosion technology has developed from the early coal tar enamel and asphalt anti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J153/02C09J123/08C09J151/06C09J9/00
Inventor 任天斌韩宇黄超任杰
Owner TONGJI UNIV
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