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A kind of polyethylene powder coating for anti-corrosion steel pipe and preparation method thereof

A technology of polyethylene powder and anti-corrosion steel pipe, applied in the field of coatings, to achieve the effect of simple construction, broad market space, and smooth surface of the coating film

Inactive Publication Date: 2011-12-14
SHANGHAI BANGZHONG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the defects of the existing polyethylene powder coating in the metal anti-corrosion field, and through long-term research, prepares a polyethylene powder coating for anti-corrosion steel pipes. The anti-corrosion coating has strong adhesion between the steel pipe layer and is not easy to peel

Method used

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  • A kind of polyethylene powder coating for anti-corrosion steel pipe and preparation method thereof
  • A kind of polyethylene powder coating for anti-corrosion steel pipe and preparation method thereof
  • A kind of polyethylene powder coating for anti-corrosion steel pipe and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Polyethylene powder coating for anticorrosive steel pipe contains the following components (parts by weight):

[0023]

[0024] Preparation: Mix polyethylene and other various additives according to the formula and put them into a twin-screw extruder for melting, extrusion and granulation. The product is pulverized into fine powder by a plastic pulverizer and sieved, taking 180-200 The target component is sufficient.

[0025] The nano SiO 2 The modification method is: the nano Si0 2 , The silane coupling agent KH-550 pair and acetone are added to the reaction vessel in a certain proportion. The amount of the silane coupling agent is 4% to 4.5% of the mass of nano silica, and the weight ratio of nano SiO2 to acetone is 1: 3. Heat in a water bath, gradually raise the temperature to 60°C, stir and oscillate ultrasonically, reflux at constant temperature for 30 minutes, filter with suction, wash with absolute ethanol three times, and dry to obtain surface-modified nano-SiO 2 .

Embodiment 2

[0027] Polyethylene powder coating for anticorrosive steel pipe contains the following components (parts by weight):

[0028]

[0029] Preparation: Mix polyethylene and other various additives according to the formula and put them into a twin-screw extruder for melting, extrusion and granulation. The product is pulverized into fine powder by a plastic pulverizer and sieved, taking 180-200 The target component is sufficient.

[0030] The nano SiO 2 The modification method is: the nano SiO 2 , The silane coupling agent KH-550 pair and acetone are added to the reaction vessel in a certain proportion. The amount of the silane coupling agent is 4% to 4.5% of the mass of nano silica, and the weight ratio of nano SiO2 to acetone is 1: 3. Heat in a water bath, gradually raise the temperature to 60°C, stir and oscillate ultrasonically, reflux at constant temperature for 30 minutes, filter with suction, wash with absolute ethanol three times, and dry to obtain surface-modified nano-SiO 2 .

Embodiment 3

[0032] Polyethylene powder coating for anticorrosive steel pipe contains the following components (parts by weight):

[0033]

[0034] Preparation: Mix polyethylene and other various additives according to the formula and put them into a twin-screw extruder for melting, extrusion and granulation. The product is pulverized into fine powder by a plastic pulverizer and sieved, taking 180-200 The target component is sufficient.

[0035] The nano SiO 2 The modification method is: the nano SiO 2 , The silane coupling agent KH-550 pair and acetone are added to the reaction vessel in a certain proportion. The amount of the silane coupling agent is 4% to 4.5% of the mass of nano silica, and the weight ratio of nano SiO2 to acetone is 1: 3. Heat in a water bath, gradually raise the temperature to 60°C, stir and oscillate ultrasonically, reflux at constant temperature for 30 minutes, filter with suction, wash with absolute ethanol three times, and dry to obtain surface-modified nano-SiO 2 .

...

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Abstract

The invention belongs to the field of coatings and particularly relates to a polyethylene powder coating used for an anti-corrosion steel pipe and a preparation method thereof. The polyethylene powder coating is characterized by comprising the following components in parts by weight: 100 parts of polyethylene resin, 2-4 parts of modified nanometer SiO2, 2-10 parts of antioxidant, 1-5 parts of light stabilizer, 5-10 parts of modifying agent, 0.1-0.5 part of flatting agent and 5-20 parts of pigment. In the polyethylene powder coating, the nanometer SiO2 is used for modifying the coating, and the adhesive force of the polyethylene powder coating and a metal matrix is improved. In order to realize the purpose that the nanometer SiO2 is stable and even in the matrix material, a silane couplingagent KH-550 adopted in the polyethylene powder coating is adopted for modifying the nanometer material. The powder coating disclosed by the invention has the advantages of good adhesiveness with metal steel, small possibility of cracking, good anticorrosive weathering resistance, long service life, smooth and flat coating film surface, good decoration effect, good mobility and wide market space,and is simple to construct.

Description

Technical field [0001] The invention belongs to the field of coatings, and specifically relates to a polyethylene powder coating for anticorrosive steel pipes and a preparation method thereof. Background technique [0002] Polyethylene powder coating is a typical thermoplastic powder coating, non-toxic, cheap raw materials, low water absorption, good film corrosion resistance, acid and alkali resistance, and general organic solvents below 60°C. The temperature resistance is also good, and it can remain stable at -70~80℃. It can resist any solvent, acid and alkali corrosion at room temperature, has excellent electrical insulation, good radiation resistance, so it is widely used in the field of metal corrosion protection. It can be used for the coating of highway guardrails and protection nets, drinking water pipelines and transportation equipment, and has a long service life. In addition, because it can resist highly corrosive media and harsh environments, and has a long life, i...

Claims

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Application Information

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IPC IPC(8): C09D123/06C09D7/12C09D5/03F16L58/10
Inventor 毕宏海储江顺彭艳华程启山李小燕欧阳圣肖伏兰刘童军孙灵侠韩小东周洁蔡怡沈超朱杰
Owner SHANGHAI BANGZHONG NEW MATERIAL
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