Preparation method of poly ethylene (PE) hot melt glue powder for 3PE anti-corrosion pipelines

A hot melt adhesive and powder technology, applied in the direction of adhesives, graft polymer adhesives, adhesive types, etc., can solve the problem of unmentioned PE hot melt adhesive powder, unmentioned elastomer tackifying resin PE heat The peel strength and flexibility of the melt adhesive powder, and the preparation method of the PE hot melt adhesive powder are not mentioned, so as to achieve the effect of good mechanical properties

Active Publication Date: 2013-07-03
GUANGZHOU LUSHAN NEW MATERIALS +1
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Problems solved by technology

[0007] However, none of the above patents mentioned a preparation method of PE hot melt adhesive powder for 3PE anti-corrosion pipelines, nor did it mention that the coating of PE hot melt adhesive powder was completed by powder coating process during use, nor did it mention The addition of elastomer tackifying resin improves the peel strength and flexibility of PE hot melt adhesive powder, and it is not mentioned that the addition of polyacrylate leveling agent improves the leveling of PE hot melt adhesive powder, so that the coating has no sag, Phenomena such as orange peel and pinholes

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  • Preparation method of poly ethylene (PE) hot melt glue powder for 3PE anti-corrosion pipelines

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[0024] The invention discloses a preparation method of PE hot-melt adhesive powder for 3PE anti-corrosion pipelines, which comprises the following raw material components in percentage by weight: polyethylene graft adhesive resin 10-40%; polyolefin matrix resin 30- 80%; Elastomer tackifying resin 5-30%; Polyacrylate leveling agent 5-30%.

[0025] With polyethylene mixture or polyethylene, ethylene copolymer mixture as the base resin, 0.5-2.5wt% of maleic anhydride (MAH), acrylic acid (AA), ethyl acrylate (EA), butyl acrylate (BA) One or the blend is a graft monomer, with one or the blend in 0.15-0.25wt% dicumyl peroxide (DCP), benzoyl peroxide (BPO) as initiator, by High-mixer pre-mixing ensures uniform dispersion of each component, and graft modified adhesive resin is obtained through reactive extrusion process. Premix the weighed adhesive resin, matrix resin, tackifier resin, and leveling agent, then knead with a twin-screw extruder to obtain PE hot melt adhesive particles....

Embodiment 1

[0041] PE hot melt adhesive powder formula (100%) is as follows:

[0042] Polyethylene graft adhesive resin 15%

[0043] Polyolefin matrix resin 65%

[0044] Elastomer Tackifying Resin 14%

[0045] Polyacrylate leveling agent 6%

[0046] Wherein, the formula (100%) of polyethylene graft bonding resin:

[0047] HDPE 60%

[0048] Linear Low Density Polyethylene 38.55%

[0049] Maleic anhydride monomer 1.3%

[0050] Dicumyl peroxide 0.15%;

[0051] Wherein, the formula (100%) of polyolefin matrix resin:

[0052] HDPE 70%

[0053] Low-density polyethylene 30%;

[0054] Wherein, the composition of elastomer tackifying resin is:

[0055] Ethylene-octene copolymer 75%

[0056] EVA25%;

[0057] The raw materials of each component in the polyethylene graft adhesive resin formulation are accurately weighed and pre-mixed by a high-speed mixer to ensure that the components are uniformly dispersed, and then the polyethylene graft adhesive resin is obtained through twin-screw re...

Embodiment 2

[0059] PE hot melt adhesive powder formula (100%) is as follows:

[0060] Polyethylene graft adhesive resin 20%

[0061] Polyolefin matrix resin 57%

[0062] Elastomer Tackifying Resin 18%

[0063] Polyacrylate leveling agent 5%;

[0064] Wherein, the formula (100%) of polyethylene graft bonding resin:

[0065] HDPE 65%

[0066] Linear Low Density Polyethylene 33.22%

[0067] Maleic anhydride monomer 1.6%

[0068] Dicumyl peroxide 0.18%;

[0069] Wherein, the formula of polyolefin matrix resin is identical with embodiment 1;

[0070] Wherein, the composition of polyolefin tackifying resin is ethylene-octene copolymer;

[0071] The raw materials of each component in the polyethylene graft adhesive resin formulation are accurately weighed and pre-mixed by a high-speed mixer to ensure that the components are uniformly dispersed, and then the polyethylene graft adhesive resin is obtained through twin-screw reaction extrusion. Premix the weighed adhesive resin, matrix resi...

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Abstract

The invention relates to a preparation method of poly ethylene (PE) hot melt glue powder for 3PE anti-corrosion pipelines. According to the preparation method, the double-screw extrusion is adopted for implementing a blending compounding process for extrusion granulation, and the PE hot melt glue powder is obtained through grinding equipment. The PE hot melt glue powder comprises the following ingredients in percentage by weight: 10 to 40 percent of PE graft bonding resin, 30 to 80 percent of polyolefin matrix resin, 5 to 30 percent of elastomer tackifying resin and 5 to 30 percent of leveling agents. The PE hot melt glue powder has good mechanical performance, dry powder flowability, leveling performance, stress crack resistance, weather resistance and corrosion resistance, is suitable for a dusting process and a flame spraying process and has very high bonding intensity like epoxy powder and PE jacket materials. The preparation method can be used for preparing ordinary steel pipe anti-corrosion layers and can also be used for preparing galvanized steel pipe and copper plating steel pipe anti-corrosion layers.

Description

technical field [0001] The invention relates to a preparation method of an anti-corrosion coating material, which belongs to the technical field of material composition preparation, in particular to a preparation method of PE hot-melt adhesive powder for 3PE anti-corrosion pipelines. Background technique [0002] Pipeline and component anticorrosion plays an important role in the overall structure of the national economy, and is related to the safety of use and service life of facilities in fields such as oil transportation, gas transportation, and coal mines. At present, the amount of steel damaged by corrosion is still huge every year, which also puts forward higher requirements for the anticorrosion industry. After years of development and evolution, anti-corrosion coatings have formed a variety of patterns, including 2 / 3PE anti-corrosion, 2 / 3PP anti-corrosion, asphalt glass cloth anti-corrosion, glass steel anti-corrosion, epoxy coal tar pitch paint anti-corrosion, epoxy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J123/00C09J123/06C09J123/08C09J151/06C09J11/08C09J9/00F16L58/10
Inventor 唐舫成杜壮王明辉汪加胜王咏心
Owner GUANGZHOU LUSHAN NEW MATERIALS
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