Self-cleaning antibacterial beta-crystal form PP-R cold-hot water pipe material and preparation method thereof
A PP-R, antibacterial and self-cleaning technology, applied to pipes, rigid pipes, mechanical equipment, etc., can solve the problems of short service life, no self-cleaning and antibacterial functions, high temperature resistance, poor pressure resistance, etc., and achieve high temperature resistance Improved performance, less brittle cracking, good impact strength at room temperature and low temperature
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[0043]A method for preparing antibacterial self-cleaning β-crystal form PP-R cold and hot water pipe fittings, the preparation method sequentially includes the following steps:
[0044] The first step: the preparation of the composite β-crystal nucleating agent: first take 5-10Kg of lanthanum oxide and 5-10Kg of pimelic acid and add them to the reactor, react at a constant temperature of 55-65°C for 8-15 minutes, and then heat up to Continue to react at 105-115°C for 1.5-2.5 hours, and cool to room temperature; put the material into the mixer, add 5-10Kg calcium stearate and 5-10Kg pimelic acid, at 20-30°C and the mixer speed 200- React for 3-5 minutes under the condition of 300 rev / min to generate the structural formula La 3+ Ca 2+ [OOC(CH2) 5 COO] material, then add 10-20Kg nanometer calcium carbonate, mix 2-3 minute, obtain structural formula and be CaCO 3 / La 3+ Ca 2+ [OOC(CH2) 5 COO] complex β crystal nucleating agent.
[0045] Step 2: Preparation of βPP-R resin ...
Embodiment 1
[0075] Embodiment 1: A preparation method of antibacterial self-cleaning β-crystal form PP-R hot and cold water pipes, the preparation method includes the following steps in sequence:
[0076] The first step: Preparation of the composite β-crystal nucleating agent: First, take 5Kg of lanthanum oxide and 5Kg of pimelic acid and add them to the reactor, and react at a constant temperature of 60°C for 10 minutes, then raise the temperature to 110°C to continue the reaction for 2 hours, and cool down to room temperature; put the material into the mixer, add 5Kg calcium stearate and 5Kg pimelic acid, the mixer speed is 200-300 rpm, the mixing temperature is 20-30°C, and mixing for 3-5 minutes, the resulting structural formula is La 3+ Ca 2+ [OOC(CH2) 5 COO] material, then add 10Kg nanometer calcium carbonate, mix 2-3 minute, be prepared into composite β crystal form nucleating agent, structural formula is CaCO 3 / La 3+ Ca 2+ [OOC(CH2) 5 COO].
[0077] The second step: prepa...
Embodiment 2
[0086] With embodiment 1, difference is: first get 10Kg lanthanum oxide, 10Kg pimelic acid and join in the reactor, then add 10Kg calcium stearate, 10Kg pimelic acid, then add 20Kg nano calcium carbonate; Second step: 100Kg PP-R4220, 2Kg prepared β crystal nucleating agent, 300g antioxidant 1010, 300g antioxidant DSTDP, 50g No. 10 white oil; third step: 12Kg zinc nitrate, 12Kg silver nitrate. 94Kg nanoporous titanium dioxide. The prepared 118Kg composite antibacterial agent, 6Kg polypropylene wax, 230KgβPP-R resin raw material particles; the fourth step: 100KgβPP-R resin raw material, 3Kg composite antibacterial masterbatch, 0.4Kg polypropylene wax, 0.3Kg methyl phenyl silicone oil , 1Kg superfine talcum powder.
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