Steel wire frame reinforced polyethylene composite pipe and preparation method thereof

[0016] Example 1:

[0017] A steel wire skeleton reinforced polyethylene composite pipe, comprising a core tube, a steel wire skeleton reinforcement layer and an outer surface layer, characterized in that the core tube and the outer surface layer are made of the same material and are prepared from the following parts by weight (kg) of raw materials: Polyethylene 160, chlorinated polyethylene 30, epoxy resin 70, dibutyl tin dilaurate 7, calcium stearate 6, polyethylene wax 8, jade powder 6, barium laurate 5, hydrocarbyl phosphoric acid 7, fluorine grease 4 , Glycidyl methacrylate 5, silane coupling agent 9, polyethylene terephthalate 10, phosphite antioxidant 12, nano zirconium dioxide 10, auxiliary agent masterbatch 8; The masterbatch is made of the following parts by weight (kg) of raw materials: polyamide 30, butyl naphthenate 12, dimethyl fumarate 7, sodium benzoate 6, ultrafine carbon black 9, tribasic phthalate Lead formate 5, nano silica 13, ethylene bisstearyl amide 3, magnesium laurate 4, pentaerythritol ester 8, benzoate 6, antioxidant CA 10; the preparation method is: superfine carbon black, three The salt-based lead phthalate, nano silica, and magnesium laurate were ground into powders. After mixing, add polyamide, butyl naphthenate, dimethyl fumarate and other remaining ingredients, and put them into the kneader. After kneading at a temperature of 80-90°C for 50-60 minutes, it is naturally cooled, and then sent to a pelletizer for melt-extrusion granulation to obtain the required auxiliary agent masterbatch.

[0018] A preparation process of a steel wire skeleton reinforced polyethylene composite pipe includes the following steps:

[0019] (1) After mixing the raw materials except epoxy resin, add them to the high-speed kneader and knead for 8-10 minutes, the kneading temperature is 160-180℃, and then feed the raw materials into the cold mixer and stir until the temperature is 35-40℃ Blanking

[0020] (2) Put the raw materials obtained in step (1) into the hoppers of the core pipe polyethylene pipe screw extruder and the outer polyethylene pipe extruder in proportion, and the core pipe polyethylene pipe screw extruder extrudes the polyethylene. Enter the core tube polyethylene tube mold to form, and obtain the core tube after vacuum sizing and cooling;

[0021] (3) The core tube enters the winding machine through the tractor, and at least two layers of steel wire skeletons are wound around the outer surface of the core tube at an angle of 45 degrees to 60 degrees to form a steel wire skeleton reinforcement layer, and the glue layer extruder is used to extrude and melt The state of epoxy resin bonds the steel wire skeleton reinforcement layer and the core tube together;

[0022] (4) The outer polyethylene pipe extruder extrudes polyethylene into the outer polyethylene pipe mold, and forms the outer polyethylene pipe on the outer surface of the steel wire skeleton reinforcement layer, and continuously sprays water to cool the outer layer to obtain the steel wire skeleton reinforced polymer Vinyl composite pipe.

[0023] Example 2:

[0024] A steel wire skeleton reinforced polyethylene composite pipe includes a core pipe, a steel wire skeleton reinforced layer and an outer surface layer. The core pipe and the outer surface layer are made of the same material and are prepared from the following parts by weight (kg) of raw materials: polyethylene 165, Chlorinated polyethylene 32.5, epoxy resin 75, dibutyl tin dilaurate 7.5, calcium stearate 7.5, polyethylene wax 9, jade powder 7, barium laurate 6, hydrocarbyl phosphoric acid 8, fluorine grease 6, methacrylic acid Glycidyl ester 5.5, silane coupling agent 12, polyethylene terephthalate 12.5, phosphite antioxidant 13, nano zirconium dioxide 11, auxiliary agent masterbatch 9; the auxiliary agent masterbatch is composed of The following parts by weight (kg) are made of raw materials: polyamide 33, butyl naphthenate 13, dimethyl fumarate 8, sodium benzoate 7, ultrafine carbon black 9.5, tribasic lead phthalate 6, Nano silica 14, ethylene bisstearyl amide 4, magnesium laurate 5, pentaerythritol ester 8.5, benzoate 7, antioxidant CA 11; the preparation method is: superfine carbon black, tribasic o-benzene Lead diformate, nano-silica, and magnesium laurate were ground into powders. After mixing, add polyamide, butyl naphthenate, dimethyl fumarate and other remaining ingredients, and put them into the kneader. After kneading at a temperature of ℃ for 50-60 minutes, it is naturally cooled, and then sent to a pelletizer for melt extrusion and granulation to obtain the required auxiliary agent masterbatch.

[0025] The preparation process is the same as in Example 1.

[0026] Example 3:

[0027] A steel wire skeleton reinforced polyethylene composite pipe includes a core pipe, a steel wire skeleton reinforced layer and an outer surface layer. The core pipe and the outer surface layer are made of the same material and are prepared from the following parts by weight (kg) of raw materials: polyethylene 170, Chlorinated polyethylene 35, epoxy resin 80, dibutyl tin dilaurate 8, calcium stearate 9, polyethylene wax 10, jade powder 8, barium laurate 7, hydrocarbyl phosphoric acid 9, fluorine grease 8, methacrylic acid Glycidyl ester 6, silane coupling agent 14, polyethylene terephthalate 15, phosphite antioxidant 14, nano zirconium dioxide 12, auxiliary agent masterbatch 10; the auxiliary agent masterbatch is composed of The following parts by weight (kg) of raw materials are made: polyamide 36, butyl naphthenate 14, dimethyl fumarate 9, sodium benzoate 8, ultrafine carbon black 10, tribasic lead phthalate 7, Nano silica 15, ethylene bis-stearamide 5, magnesium laurate 6, pentaerythritol ester 9, benzoate 8, antioxidant CA 12; the preparation method is: superfine carbon black, tribasic o-benzene Lead diformate, nano-silica, and magnesium laurate were ground into powders. After mixing, add polyamide, butyl naphthenate, dimethyl fumarate and other remaining ingredients, and put them into the kneader. After kneading at a temperature of ℃ for 50-60 minutes, it is naturally cooled, and then sent to a pelletizer for melt extrusion and granulation to obtain the required auxiliary agent masterbatch.

[0028] The preparation process is the same as in Example 1.

[0029] The performance test results of the steel wire skeleton reinforced polyethylene composite pipe prepared in Examples 1-3 are shown in the following table:

[0030] Example 1 Example 2 Example 3 Flame retardant performance V-1 V-1 V-0 Adhesion, N/10mm3 56 65 63 Bending performance No cracks, no delamination No cracks, no delamination No cracks, no delamination Peel strength, N/m 132 144 138 Pinhole experiment No sparks No sparks No sparks