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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, grafted polymer adhesives, adhesive types, etc., can solve the problems of unsatisfactory construction fluidity, poor weather resistance of anti-corrosion hot-melt adhesives, etc., and reach the applicable area Wide expanse, good high and low temperature resistance, and the effect of improving adhesion

Inactive Publication Date: 2010-09-01
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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Component ratio (wt%) of anticorrosion hot-melt adhesive for metal pipe filling:

[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 phenolic resin 14

[0041] Inorganic filler 5

[0042] Antioxidant 1

[0043]According to the measurement, the three components of SIS, SBS and naphthenic oil were oil-extended at 80°C for 30 minutes; then a certain proportion of antioxidant was added, kneaded at a high speed in a kneader, and the temperature was set at 170°C; after stirring evenly Add EVA, EEA, M-g-PE, C 5 Petroleum resin, terpene phenol resin, filler, continue to stir and knead at a high speed at 170°C. Finally, the homogeneously kneaded hot melt adhesive is extrud...

Embodiment 2

[0045] Component ratio (wt%) of anticorrosion hot-melt adhesive for metal pipe filling:

[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 were oil-extended at 80°C for 30 minutes; then a certain proportion of antioxidant was added, kneaded at a high speed in a kneader, and the temperature was set at 170°C; after stirring evenly Add EEA, M-g-PE, C 5 Petroleum resin, polymerized rosin, and fillers are continuously kneaded at 170°C with high-speed stirring. Finally, the homogeneously kneaded hot melt adhesive is extruded through a twin-screw extruder.

Embodiment 3

[0057] Component ratio (wt%) of anticorrosion hot-melt adhesive for metal pipe filling:

[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 phenolic 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 were oil-extended at 80°C for 30 minutes; then a certain proportion of antioxidant was added, kneaded at a high speed in a kneader, and the temperature was set at 170°C; after stirring evenly Add M-g-PE, C 5 Petroleum resin, terpene phenol resin, polymerized rosin, filler, continue to stir and knead at a high speed at 170°C. Finally, the homogeneously 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 anticorrosion hot-melt adhesives for jointing of pipelines, and in particular relates to a hot-melt adhesive applied to fast joints of metal pipelines and a preparation method thereof. Background technique [0002] In oil and gas transportation, safe, reliable, fast and convenient metal pipelines are mostly used. In order to ensure the safe operation and service life of transportation pipelines, the first consideration in pipeline construction is pipeline anticorrosion. With the rapid growth of the national economy and the improvement of people's environmental awareness, more and more metal pipelines are being built, and the geological and climatic conditions that the pipelines pass through are becoming more and more severe, so the requirements for pipeline anticorrosion are becoming more and more stringent. The anti-corrosion technology has developed from the early coal tar enamel and asphalt anti-corro...

Claims

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Application Information

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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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