UHMW alloy pipe based on modified titanium metal and preparation method of UHMW alloy pipe
A technology for titanium metal and alloy pipes, applied in the field of UHMW alloy pipes, can solve the problems of rough UHMW alloy pipes, poor lubricant dispersion performance, easy loss of lubricants, etc., and achieve the effects of enhancing weather resistance, high dispersion and reducing wear.
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[0042] The preparation method of the medium-density polyethylene prepolymer is that monomers, deionized water, oil-soluble initiators, dispersants, chain terminators and pH regulators are added to an internal mixer for reaction to obtain prepolymers, monomers The oil-soluble initiator is ethylene, the oil-soluble initiator is acyl peroxide, the dispersant is polyvinyl alcohol, the chain terminator is acetone thiosemicarbazone, and the pH regulator is ammonium bicarbonate. The mass fraction ratio of ethylene, deionized water, dispersant, pH regulator, initiator and chain terminator in the prepolymer is 1000:1000:4:1˜10:0.5:1.5:3.5.
[0043] In the present invention, the toughening agent includes at least one of rubber, hemp fiber, PVB, lignin or LDPE.
[0044] Adding lignin to the polyethylene-based composite material can improve the weather resistance and degradation resistance of the UHMW alloy pipe. During the preparation of the alloy pipe, the lignin is carbonized in the mo...
Embodiment 1
[0059] A UHMW alloy pipe based on modified titanium metal, the components are calculated in parts by weight, including 100 parts of ultra-high molecular weight polyethylene, 35 parts of multi-phase composite microspheres, 5 parts of 2,6-di-tert-butyl p-methyl base phenol and 5 parts of rare earth stabilizers; the shell material of the multiphase composite microsphere is medium density polyethylene, and the core material is nanoporous filler with lubricating oil absorbed. In the heterogeneous composite microspheres, the weight ratio of medium density polyethylene: titanium dioxide: montmorillonite: lubricating oil is 10:3:8:2.
[0060] The preparation method of the nanoporous filler adsorbed with lubricating oil is as follows: put the titanium dioxide pillared montmorillonite into the lubricating oil, and the lubricating oil just immerses the titanium dioxide pillared montmorillonite, and perform ultrasonic adsorption treatment at 60°C for 12 hours under vacuum conditions. Fina...
Embodiment 2
[0062] The difference between this example and Example 1 is that the preparation method of the multiphase composite microspheres is different.
[0063] The preparation method is as follows: S1: add the nanoporous filler adsorbed with lubricating oil into the aqueous solution containing sodium dodecylbenzenesulfonate, and mix to obtain the dispersed phase; S2: Mix the medium-density polyethylene and the dispersed phase in an internal mixer for reaction , after the reaction is completed, suction filter, wash, and dry to obtain multiphase composite microspheres. The reaction parameters are temperature 180 ° C, rotation speed 50 r / m, and mixing for 3 min; sodium dodecylbenzenesulfonate, medium density polyethylene, adsorption The mass ratio of nanoporous filler with methyl silicone oil is 1:10:15. The concentration of sodium dodecylbenzenesulfonate is 20% of the aqueous solution.
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