Polyethylene powder coating used for anti-corrosion steel pipe and preparation method thereof
A technology of polyethylene powder and anti-corrosion steel pipe is applied in the field of coatings to achieve the effects of good decoration and protection effect, good fluidity and simple construction.
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Embodiment 1
[0022] The polyethylene powder coating for anti-corrosion steel pipes comprises the following components (parts by weight):
[0023]
[0024] Preparation: Mix polyethylene and other additives uniformly according to the formula, put them into a twin-screw extruder, melt, extrude and granulate, and the product is crushed into fine powder by a plastic grinder and sieved, and take 180-200 target components.
[0025] The nano-SiO 2 The modification method is: nano-Si0 2 , silane coupling agent KH-550 joins in the reaction vessel with acetone in a certain proportion, and wherein the consumption of silane coupling agent is 4%~4.5% of nano silicon dioxide quality, nano SiO2 and the weight ratio of acetone is 1: 3. Heat in a water bath, gradually raise the temperature to 60°C, stir and oscillate ultrasonically, reflux at a 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] The polyethylene powder coating for anti-corrosion steel pipes comprises the following components (parts by weight):
[0028]
[0029] Preparation: Mix polyethylene and other additives uniformly according to the formula, put them into a twin-screw extruder, melt, extrude and granulate, and the product is crushed into fine powder by a plastic grinder and sieved, and take 180-200 target components.
[0030] The nano-SiO 2 The modification method is: nano-SiO 2 , silane coupling agent KH-550 joins in the reaction vessel with acetone in a certain proportion, and wherein the consumption of silane coupling agent is 4%~4.5% of nano silicon dioxide quality, nano SiO2 and the weight ratio of acetone is 1: 3. Heat in a water bath, gradually raise the temperature to 60°C, stir and oscillate ultrasonically, reflux at a 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] The polyethylene powder coating for anti-corrosion steel pipes comprises the following components (parts by weight):
[0033]
[0034] Preparation: Mix polyethylene and other additives uniformly according to the formula, put them into a twin-screw extruder, melt, extrude and granulate, and the product is crushed into fine powder by a plastic grinder and sieved, and take 180-200 target components.
[0035] The nano-SiO 2 The modification method is: nano-SiO 2 , silane coupling agent KH-550 joins in the reaction vessel with acetone in a certain proportion, and wherein the consumption of silane coupling agent is 4%~4.5% of nano silicon dioxide quality, nano SiO2 and the weight ratio of acetone is 1: 3. Heat in a water bath, gradually raise the temperature to 60°C, stir and oscillate ultrasonically, reflux at a constant temperature for 30 minutes, filter with suction, wash with absolute ethanol three times, and dry to obtain surface-modified nano-SiO 2 .
[0036] By ...
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