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Method of preventing corrosion by marine microorganisms by using artificial supper-smooth surfaces

An ultra-smooth surface, marine microbial technology, used in melt spinning, stretch spinning, rayon manufacturing, etc., can solve problems such as accelerated local corrosion, improve aging resistance, improve smoothness, improve overall performance and cost-effective effect

Inactive Publication Date: 2015-07-29
THE FIRST INST OF OCEANOGRAPHY SOA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, changes in the local microenvironment due to microbial attachment will also accelerate the occurrence of localized corrosion.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] S1. Weigh 70 parts of polycarbonate; 10 parts of acrylonitrile-styrene copolymer; 1 part of compatibilizer; 5 parts of toughening agent; 0.1 part of antioxidant; 0.1 part of lubricant; 2 parts of flame retardant synergist ; 5 parts of brominated flame retardants; 0.6 parts of nanoscale dry titanium dioxide; 0.5 parts of turpentine additives for spinning; 0.5 parts of acrylic additives of perfluoroalkyl groups; 0.5 parts of heat-resistant agents; 1 part of inorganic nanoparticles;

[0024] S2. The polycarbonate, acrylonitrile-styrene copolymer, compatibilizer, toughening agent, antioxidant, lubricant, flame retardant synergist, brominated flame retardant, nano-scale Add dry titanium dioxide, turpentine additives for spinning, perfluoroalkyl acrylic additives, heat-resistant agents, and inorganic nanoparticles into a high-speed mixer, and discharge after stirring for 5 minutes to obtain a mixture;

[0025] S3. The mixture obtained in step S2 is blended and granulated by a...

Embodiment 2

[0030] S1. Weigh 80 parts of polycarbonate; 20 parts of acrylonitrile-styrene copolymer; 5 parts of compatibilizer; 10 parts of toughening agent; 1 part of antioxidant; 1 part of lubricant; 6 parts of flame retardant synergist ; 25 parts of brominated flame retardants; 1.5 parts of nanoscale dry titanium dioxide; 2.2 parts of turpentine additives for spinning; 5 parts of perfluoroalkyl acrylic additives; 5 parts of heat-resistant agents; 10 parts of inorganic nanoparticles;

[0031] S2. The polycarbonate, acrylonitrile-styrene copolymer, compatibilizer, toughening agent, antioxidant, lubricant, flame retardant synergist, brominated flame retardant, nano-scale Add dry titanium dioxide, turpentine additives for spinning, perfluoroalkyl acrylic additives, heat-resistant agents, and inorganic nanoparticles into a high-speed mixer, and discharge after stirring for 30 minutes to obtain a mixture;

[0032]S3. The mixture obtained in step S2 is blended and granulated by a twin-screw e...

Embodiment 3

[0037] S1. Weigh 75 parts of polycarbonate; 15 parts of acrylonitrile-styrene copolymer; 3 parts of compatibilizer; 7.5 parts of toughening agent; 0.55 parts of antioxidant; 0.55 parts of lubricant; 4 parts of flame retardant synergist 15 parts of brominated flame retardants; 1.05 parts of nanoscale dry titanium dioxide; 1.35 parts of turpentine additives for spinning; 2.75 parts of acrylic additives of perfluoroalkyl groups; 2.75 parts of heat-resistant agents; 5.5 parts of inorganic nanoparticles;

[0038] S2. The polycarbonate, acrylonitrile-styrene copolymer, compatibilizer, toughening agent, antioxidant, lubricant, flame retardant synergist, brominated flame retardant, nano-scale Add dried titanium dioxide, turpentine additives for spinning, perfluoroalkyl acrylic additives, heat-resistant agents, and inorganic nanoparticles into a high-speed mixer, and discharge after stirring for 18 minutes to obtain a mixture;

[0039] S3. The mixture obtained in step S2 is blended and...

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PUM

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Abstract

The invention discloses a method of preventing corrosion by marine microorganisms by using artificial supper-smooth surfaces. The method comprises the following steps: weighing and taking polycarbonate, acrylonitrile and styrene copolymer, a compatilizer, a flexibilizer, an antioxidant, a lubricating agent, a flame-retardant synergist, a brominated flame retardant, nanoscale dried titanium dioxide, a turpentine assistant for spinning, an acrylic acid type additive with perfluoroalkyl group, a heat-resistant agent and inorganic nanoparticles according to parts by weight; blending the raw materials, mixing and pelletizing the blended materials through a double-screw extruder to obtain mixed material aggregates; preparing the mixed material aggregates into nascent composite filaments through a single screw extruder; cooling the nascent composite filaments and carrying out hot stretching two times; degreasing the stretched composite filaments with high pressure draft and quickly cooling the degreased composite filaments, and using the filament-collecting machine of a torgue motor to collect and roll filament tows of composite filaments to obtain finished products. According to the invention, special proportion and special spinning technology are adopted, so as to improve the surface smoothness, capacity of microbiological corrosion resistance, breaking strength, knot strength, knot use ratio, durability and suitability of rope nets.

Description

technical field [0001] The invention relates to a method for preventing corrosion of marine microorganisms, in particular to a method for preventing corrosion of marine microorganisms by using an artificial ultra-smooth surface. Background technique [0002] The ocean is not only a treasure trove of resources for human survival and development, but also an important channel for international trade, and an important platform for international political, economic, and military competition and cooperation. In the process of marine resources development, the corrosion of materials is one of the main threats faced by marine engineering facilities in service. Microbial corrosion is an important corrosion form of marine environment corrosion, which refers to the corrosion caused by microorganisms or the corrosion caused by the influence of microorganisms. Sulfate-reducing bacteria are typical corrosion microorganisms, which can form biofilms on the surface of marine engineering ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/16D01F8/08D01F1/10D01D1/04D01D5/08D01D5/14D01D5/16D01D10/02
Inventor 张爱军臧家业
Owner THE FIRST INST OF OCEANOGRAPHY SOA
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