Summary of the invention
The technical problem to be solved in the present invention provides a kind of raw material of making pipe for transporting combustible gases, need do configuration of optimization materials and deep processing increment processing at requirement of tubing physicochemical property and working conditions, has improved pipe performance and permanent stability.
For solving the problems of the technologies described above, the present invention makes the raw material of pipe for transporting combustible gases, comprises following each component by weight percentage: high density polyethylene(HDPE) (HDPE-YG055): 87.72%; Hydroxyethyl alkylamine, high fatty alcohol, silicon-dioxide (HZ-1): 0.53~0.80%; Hibbsite [Al(OH)
3]: 3.51~4.79%; 2-hydroxyl-4 octyloxy benzophenone (UV-531): 0.88~1.60%; Triphenyl phosphite: 1.76~2.40%; Phosphoric acid acid zirconium carries silver (XDK-201): 0.44~0.80%; Titanium ester coupling agent (HC-131): 0.27~0.56%; Nano-calcium carbonate master batch (CaCo
3): 4.39~7.99%; Polyethylene wax (ACPE): 0.09~0.40%; Butyl stearate (the positive butyl ester of stearic acid) C
22H
44O
2: 0.44~0.80%.
The weight percent of three kinds of raw materials is in hydroxyethyl alkylamine, high fatty alcohol, silicon-dioxide (HZ-1) component: hydroxyethyl alkylamine: 40 %; High fatty alcohol: 40 %; Silicon-dioxide: 20 %.
The present invention compared with prior art has following advantage:
The present invention is directed to requirement of tubing physicochemical property and working conditions and need do configuration of optimization materials and deep processing increment processing.Pipe performance and permanent stability have been improved.Particularly solved the problem that technical indicators such as the anti-quick crack propagation that occurs and anti-slow crack growth descend in the life-time service process.Thereby the financial loss that causes thus and the bigger potential safety hazard of hiding have been eliminated.
Embodiment:
Make the raw material of pipe for transporting combustible gases, comprise following each component by weight percentage: high density polyethylene(HDPE) (HDPE-YG055): 87.72%; Hydroxyethyl alkylamine, high fatty alcohol, silicon-dioxide (HZ-1): 0.53~0.80%; Hibbsite [Al (OH)
3]: 3.51~4.79%; 2-hydroxyl-4 octyloxy benzophenone (UV-531): 0.88~1.60%; Triphenyl phosphite: 1.76~2.40%; Zirconium phosphate carries silver (XDK-201): 0.44~0.80%; Titanate coupling agent (HC-131): 0.27~0.56%; Nano-calcium carbonate master batch (CaCo
3): 4.39~7.99%; Polyethylene wax (ACPE): 0.09~0.40%; Butyl stearate (the positive butyl ester of stearic acid) C
22H
44O
2: 0.44~0.80%.
The weight percent of three kinds of raw materials is in hydroxyethyl alkylamine, high fatty alcohol, silicon-dioxide (HZ-1) component: hydroxyethyl alkylamine: 40%; High fatty alcohol: 40%; Silicon-dioxide: 20 %.
The mechanism of action that the present invention makes the composition of raw materials of pipe for transporting combustible gases is: require and the corresponding properties-correcting agent of working conditions design interpolation in conjunction with the tubing physicochemical property, thereby improved pipe performance and permanent stability.Particularly solve the problem that technical indicators such as the anti-quick crack propagation that occurs and anti-slow crack growth descend in the life-time service process, thereby eliminated the financial loss that causes thus and the bigger potential safety hazard of hiding.Component wherein: hydroxyethyl alkylamine, high fatty alcohol, silicon-dioxide (HZ-1) are static inhibitor, reduce resistivity thereby can suitably increase tube surfaces electroconductibility, make tubing resistivity≤10-9 Ω/cm, can avoid causing fire because of static sparking; Component hibbsite [Al (OH)
3] be fire retardant, under 300 ℃ of conditions, decompose and emit crystal water and absorb heat again and emit water vapour, and then dash and go out combustion flame and water down the combustion conditions of unburn polymer chain; Component 2-hydroxyl-4 octyloxy benzophenone (UV-531) is a UV light absorber, hertzian wave that can absorbing wavelength 290-380nm and then change ultraviolet structure, dissipation energy; The component triphenyl phosphite is the work-ing life that the coupling synergy of antioxidant and component 2-hydroxyl-4 octyloxy benzophenone (UV-531) has increased tubing greatly; It is antiseptic-germicide that the component zirconium phosphate carries silver (XDK-201), is to be that carrier silver zinc metal ion is antibiotic ion with the zirconium phosphate, and broad-spectrum bactericidal action is arranged.In order to avoid tubing stores under hot, moist, underground, medium weather condition of water or uses owing to corroded by microbial bacterial and to cause performance and quality degradations such as spot, embrittlement, contraction; Component titanate coupling agent (HC-131) is a coupling agent, can make the multipolymer of the molecular structure of heterogeneity in the composition of raw materials of the present invention form structure proximate and avidity, to improve quality of materials; Component nano-calcium carbonate master batch (CaCo
3) be weighting agent, component high density polyethylene(HDPE) (HDPE-YG055) is opened dissociate when magnetism between the molecular chain forms the cavity under the elastomeric state condition and be filled and then under the vitreous state condition, increase the closed convergent force in cavity, make tubing stabilized contraction size, strengthen increment, reduce cost; Component polyethylene wax (ACPE) is an external lubricant, and it alleviates the intensity of torque loads and melt pressure in process of manufacture, can suitably increase extruded velocity, improve output; Component butyl stearate (the positive butyl ester of stearic acid) C
22H
44O
2Be internal lubricant, can suitably reduce magnetism and mutual fricative temperature rise and heat between component carrier high density polyethylene(HDPE) (HDPE-YG055) chain molecule and the molecule.The melt plasticizing be can promote, high temperature oxidation, stable material quality prevented.
Raw material, technical process and the processing condition of making pipe for transporting combustible gases are: composition of raw materials
The high temperature kneading (50 ~ 60 ℃ of temperature, 10min)
The low temperature stirring (10 ℃ of temperature, 10min)
Extrusion moulding.