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Antibacterial PPR hot water pipe material and preparation method thereof

A technology of hot water pipes and antibacterial agents, applied in the field of polypropylene, can solve the problems of harmful bacteria and mold pollution, affect the health of users, and easily reproduce bacteria, etc., and achieve the effect of high impact strength

Inactive Publication Date: 2019-03-01
SINOPEC YANGZI PETROCHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As the main pipeline for domestic water delivery, PPR pipes have many advantages, but polypropylene, like other plastics, is easily polluted by various harmful bacteria and molds. When the temperature and humidity are suitable, bacteria are more likely to multiply, thus affecting the health of users. The development of antibacterial PPR pipe material will make the PPR pipe have antibacterial effect after it is produced, and the market prospect is broad
At present, there is no relevant patent report on the direct production of antibacterial PPR hot water pipe materials by polymerization reaction equipment in China.

Method used

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  • Antibacterial PPR hot water pipe material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Adopt AMOCO gas-phase polymerization process, double reactor series polymerization method to produce random polypropylene: add broad-distributed main catalyst SAL (produced by Beijing Aoda Company, the source of other examples is the same) into the first reactor, and the reaction temperature is 60-70 ℃, the reaction pressure is 2-3MPa, the amount of hydrogen added is controlled at 0.35kg / h, ethylene monomer is added for copolymerization, the amount of ethylene added is 590kg / h, and the amount of polymerization is controlled at 15t / h; then enter the second reactor and close Hydrogen feed valve, the amount of ethylene added is 480kg / h, the polymerization amount is controlled at 7t / h, the reaction temperature is 70-80°C, the reaction pressure is 2-3MPa, and the random polypropylene is obtained by polymerization in the second reactor.

[0023] Take 100 parts of random polypropylene, add compounding auxiliary system (0.1 part of antioxidant PEPQ and 0.075 part of DSTDP and 0....

Embodiment 2

[0025] Adopt AMOCO gas-phase method polymerization, double-reactor series polymerization to produce random polypropylene: add broad-distributed main catalyst SAL into the first reactor, the reaction temperature is 60-70°C, the reaction pressure is 3MPa, and the amount of hydrogen added is controlled at 0.3kg / h, add ethylene monomer to carry out copolymerization, the addition of ethylene is 550kg / h, the polymerization amount is controlled at 18t / h; then enter the second reactor, close the hydrogen feed valve, the addition of ethylene is 450kg / h, the polymerization amount is controlled At 8t / h, the reaction temperature is 70-80°C, and the reaction pressure is 2MPa. Polymerize in the second reactor to obtain random polypropylene.

[0026] Get 100 parts of random polypropylene, add compounding auxiliary agent system (0.15 part of antioxidant 330, 0.075 part of antioxidant PEPQ and 0.05 part of DSTDP and 0.2 part of nano rubber compounding auxiliary system loaded with antibacterial...

Embodiment 3

[0028] AMOCO gas-phase polymerization is adopted, and double-reactor series polymerization is used to produce random polypropylene: the wide-distributed main catalyst SAL is added to the first reactor, the reaction temperature is 60-70°C, the reaction pressure is 2.5MPa, and the amount of hydrogen added is controlled at 0.4 kg / h, add ethylene monomer for copolymerization, the amount of ethylene added is 640kg / h, and the polymerization amount is controlled at 18t / h; then enter the second reactor, close the hydrogen feed valve, the amount of ethylene added is 520kg / h, the polymerization amount Controlled at 9t / h, reaction temperature 70-80°C, reaction pressure 2.3MPa, polymerize in the second reactor to obtain random polypropylene.

[0029] Get 100 parts of random polypropylene, add compounding auxiliary agent system (0.1 part of antioxidant PEPQ and 0.1 part of DSTDP and 0.3 part of nano rubber compounding auxiliary system loaded with antibacterial agent, wherein antibacterial ...

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Abstract

The invention discloses an antibacterial PPR hot water pipe material and a preparation method thereof. The antibacterial PPR hot water pipe material is prepared from raw materials in parts by weight as follows: 100 parts of atactic polypropylene, 0.1-0.3 parts of space hindered phenol, 0.05-0.15 parts of a phosphite antioxidant, 0.05-0.15 parts of a sulfur-containing synergist and 0.1-0.5 parts ofan antibacterial agent. The preparation method of the antibacterial PPR hot water pipe material comprises the steps as follows: uniformly mixing all the metered raw materials, then, adding the obtained mixture to a continuous twin-screw internal mixing granulator, controlling the temperature at 200-230 DEG C and performing discharging. The antibacterial PPR hot water pipe material has good physical and mechanical performance and forming processing performance, excellent antibacterial performance, long-term creep resistance and long service life.

Description

technical field [0001] The invention relates to an antibacterial PPR hot water pipe material and a preparation method thereof, belonging to the technical field of polypropylene. Background technique [0002] Random copolymerized polypropylene (PPR) special pipe material is obtained by copolymerization of propylene and ethylene under the action of heating, pressure and catalyst, and ethylene is randomly embedded in the long chain of propylene. Under the long-term action of a certain temperature and internal pressure, the hot water static pressure life of PPR pipes is much higher than that of homopolypropylene (PPH) and block copolymer polypropylene (PPB), and its pressure resistance, low temperature resistance and The service life has been improved. For example, under the conditions of transporting hot water at 70°C and internal pressure of 1MPa for a long time, its service life can reach 50 years. Due to the excellent performance of PPR pipes, its market share has increased...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08K13/06C08K9/12C08K5/06C08K3/16C08K5/13C08K3/22C08K5/19C08K5/47
CPCC08K3/16C08K3/22C08K5/06C08K5/13C08K5/19C08K5/47C08K9/12C08K13/06C08K2003/2296C08L23/14
Inventor 鲍光复徐振明傅勇
Owner SINOPEC YANGZI PETROCHEM
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