A kind of preparation method of organosilicon marine antifouling coating

A marine antifouling and silicone technology, applied in antifouling/underwater coatings, coatings, paints containing biocides, etc., can solve the problems of reduced heat resistance, toxicity, and lower curing temperature, and achieve improved antifouling performance, good antifouling activity, good growth inhibitory effect

Active Publication Date: 2018-03-27
佛山市顺德区绅教合成剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

①Cold-mixed silicone coating refers to the coating made by mixing silicone resin with other organic resins. Resins with good miscibility include phenolic resin, methacrylic resin, amino resin, alkyd resin, epoxy resin , polyester resin, and ethyl fiber resin. After these resins are added, the curing temperature of the coating will decrease and the mechanical strength will increase; Coatings prepared by mixing, the adhesion, solvent resistance, flexibility, and color retention of this type of coatings are stronger than those of cold-mixed coatings, but the heat resistance is reduced
However, the antifouling agents used in this coating are cuprous oxide and copper pyrithione, which are toxic to a certain extent and cause damage to the marine environment, which is not environmentally friendly.

Method used

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  • A kind of preparation method of organosilicon marine antifouling coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Follow these steps to prepare a silicone marine antifouling coating:

[0029] (1) Laver is placed in a blast drying oven to be dried at 60°C, then pulverized with a pulverizer and sieved to obtain laver powder, the laver powder is added to distilled water, the weight ratio of laver powder and distilled water is 1:10, room temperature Soak for 10 hours, put it into a volatile oil extractor for steam distillation for 4 hours to obtain volatile oil, and place the volatile oil on a rotary evaporator for rotary evaporation and concentration to obtain a paste-like seaweed extract for subsequent use;

[0030] (2) After mixing dimethyl silicone oil, PVP, EMA, and BA uniformly, add initiator TBPO, and after stirring uniformly, a monomer solution is obtained, and dichloromethane is added into the reactor. The weight ratio of TBPO and methylene chloride is 20:40:20:25:2:90, heated to 110 ° C, the monomer solution is added dropwise to the reactor within 4 hours under stirring condi...

Embodiment 2

[0034] Follow these steps to prepare a silicone marine antifouling coating:

[0035] (1) Laver is placed in a blast drying oven to be dried at 60°C, then pulverized with a pulverizer and sieved to obtain laver powder, the laver powder is added to distilled water, the weight ratio of laver powder and distilled water is 1:10, room temperature Soak for 10 hours, put it into a volatile oil extractor for steam distillation for 4 hours to obtain volatile oil, and place the volatile oil on a rotary evaporator for rotary evaporation and concentration to obtain a paste-like seaweed extract for subsequent use;

[0036] (2) After mixing dimethyl silicone oil, PVP, EMA, and BA uniformly, add initiator TBPO, and after stirring uniformly, a monomer solution is obtained, and dichloromethane is added into the reactor. The weight ratio of TBPO and methylene chloride is 20:40:20:25:2:90, heated to 110 ° C, the monomer solution is added dropwise to the reactor within 4 hours under stirring condi...

Embodiment 3

[0040] Follow these steps to prepare a silicone marine antifouling coating:

[0041] (1) Laver is placed in a blast drying oven to be dried at 60°C, then pulverized with a pulverizer and sieved to obtain laver powder, the laver powder is added to distilled water, the weight ratio of laver powder and distilled water is 1:10, room temperature Soak for 10 hours, put it into a volatile oil extractor for steam distillation for 4 hours to obtain volatile oil, and place the volatile oil on a rotary evaporator for rotary evaporation and concentration to obtain a paste-like seaweed extract for subsequent use;

[0042] (2) After mixing dimethyl silicone oil, PVP, EMA, and BA uniformly, add initiator TBPO, and after stirring uniformly, a monomer solution is obtained, and dichloromethane is added into the reactor. The weight ratio of TBPO and methylene chloride is 20:40:20:25:2:90, heated to 110 ° C, the monomer solution is added dropwise to the reactor within 4 hours under stirring condi...

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Abstract

The invention provides a preparation method of organosilicone ocean antifouling paint. The preparation method comprises the following steps: (1) drying porphyra, pulverizing and sieving to obtain porphyra powder, adding in distilled water, soaking at room temperature, placing in an essential oil extractor for distilling to obtain essential oil, and carrying out rotary evaporation concentration to obtain a porphyra extract; (2) uniformly mixing dimethyl silicone oil, PVP, EMA and BA, then adding TBPO, evenly stirring to obtain a monomer solution, adding dichloromethane in a reactor, heating, dropwise adding the monomer solution in the reactor, carrying out insulation reaction, and cooling to room temperature to obtain organosilicone copolymer; (3) pulverizing the organosilicone copolymer, adding in a stirrer, adding a solvent, a defoamer, packing, a coupling agent and a dispersing agent, regulating revolving speed after stirring, adding the porphyra extract, and continuing stirring to obtain a mixture; and (4) adding the mixture obtained from the previous step in a screw extruder, carrying out melt extrusion to obtain an extruded material, cooling, then pulverizing, and sieving. The paint prepared by the invention has good heat storage performance.

Description

Technical field: [0001] The invention relates to an organic silicon coating, in particular to a preparation method of an organic silicon marine antifouling coating. Background technique: [0002] Elemental organic coatings are a general term for coatings with elemental organic polymers as the main film-forming substances, including organic silicon, organic titanium, organic fluorine, organic aluminum, organic zirconium coatings, etc. Among them, silicone resin coatings have the largest output. Elemental organic coatings are a compound between organic polymers and inorganic compounds. They have special thermal stability, insulation, high temperature resistance, chemical resistance, water resistance, weather resistance and other characteristics, and are widely used in the defense industry. , electrical industry and other industries. [0003] Silicone resin coating is a coating with silicone resin or modified silicone resin as the main film-forming material, which belongs to e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D151/08C09D5/16C09D5/14C09D7/61C09D7/63C09D7/65
CPCC08K2201/014C08L2205/035C09D5/14C09D5/1637C09D7/61C09D7/63C09D7/65C09D151/08C08L5/00C08L39/06C08L33/26C08L1/284C08K3/34
Inventor 林建明
Owner 佛山市顺德区绅教合成剂有限公司
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