阅读说明：本技术 一种壳聚糖改性的高固含船舶防腐涂料 (Chitosan modified high-solid-content ship anticorrosive paint ) 是由 胡建坤 张瑛 戴文刚 于 2020-06-29 设计创作，主要内容包括：一种壳聚糖改性的高固含船舶防腐涂料。主要解决了现阶段船舶用环氧防腐漆中有机挥发性化合物(VOC)含量普遍较高,不利于环保；容易降解断链,出现粉化现象,耐候性不强；内应力强,韧性不佳,在外力的作用下容易破损,使用寿命不长等问题。本发明的有益效果是：针对船舶用环氧防腐漆易粉化,韧性差及大量排放的VOC的特点,采用氢化丁苯橡胶搭建互穿集合物网络(IPN),配合活性稀释剂(丙氧基化甘油三缩水甘油醚),利用壳聚糖/ZnO定向配位排列易形成杂化聚集体的特性,解决了溶解性、分散性及低粘度等关键技术难题,涂层固化后能制成有光和半光型的防腐漆,耐紫外线、耐水及防腐性能十分出色,非常适合于在苛刻的海洋环境中使用。(A chitosan modified high-solid-content ship anticorrosive paint. Mainly solves the problems that the epoxy anticorrosive paint for ships at the present stage has generally high content of organic volatile compounds (VOC) and is not beneficial to environmental protection; the cable is easy to degrade and break chains, has pulverization phenomenon and low weather resistance; strong internal stress, poor toughness, easy damage under the action of external force, short service life and the like. The invention has the beneficial effects that: aiming at the characteristics of easy pulverization, poor toughness and large-amount emission of VOC of the epoxy anticorrosive paint for ships, the Interpenetrating Polymer Network (IPN) is built by hydrogenated styrene-butadiene rubber, the characteristics of easy formation of hybrid aggregates by chitosan/ZnO directional coordination arrangement are utilized, the key technical problems of solubility, dispersibility, low viscosity and the like are solved, the coating can be prepared into the bright and semi-bright anticorrosive paint after being cured, the ultraviolet resistance, the water resistance and the anticorrosive performance are very excellent, and the epoxy anticorrosive paint is very suitable for being used in harsh marine environments.)

1. A chitosan modified high-solid-content ship anticorrosive paint is characterized in that: comprises a component A and a component B.

2. The component A comprises the following components in percentage by mass:

20-40% of epoxy furan resin

3 to 8 percent of talcum powder

1-5% of hydrogenated styrene-butadiene rubber

3-10% of zinc oxide

0.05 to 0.2 percent of chitosan

0-5% of polyamide wax slurry

0 to 5 percent of dispersant

0 to 30 percent of zinc powder

20-40% of active diluent

The balance of auxiliary materials;

the component B comprises the following components in percentage by mass:

60-90% of polyamide resin

KH550 0~20%

0 to 20 percent of butyl acetate

The mass ratio of the component A to the component B is 4: 1.

3. The chitosan modified high-solid-content ship anticorrosive paint as claimed in claim 1, is characterized in that: the epoxy furan resin is HF 9200.

4. The chitosan modified high-solid-content ship anticorrosive paint as claimed in claim 1, is characterized in that: the dispersant is BYK-163.

5. The chitosan modified high-solid-content ship anticorrosive paint as claimed in claim 1, is characterized in that: the reactive diluent is propoxylated glycerol triglycidyl ether.

6. The chitosan modified high-solid-content ship anticorrosive paint as claimed in claim 1, is characterized in that: the polyamide resin is PA66-45 HSB.

7. The chitosan modified high-solid-content ship anticorrosive paint as claimed in claim 1, is characterized in that: the KH550 is aminopropyl triethoxysilane.

8. The chitosan modified high-solid-content ship anticorrosive paint as claimed in claim 1, is characterized in that: the auxiliary materials comprise one or more of titanium dioxide, iron oxide red and indigo.

Technical Field

The invention relates to the field of marine anticorrosive coatings, in particular to a chitosan modified high-solid-content marine anticorrosive coating.

Background

With the development of science and technology, the ocean exploration range is wider and deeper. The development of high-new material technology also brings new challenges and applications to the corrosion prevention of marine hulls. The nature of seawater and the complex variety of microbes in the ocean can bring corrosivity to the ship body, so that for ships which are in the seawater for a long time, the improvement of the corrosion resistance of the ship body has a direct influence on the extension of the maintenance period and the service period of the ship body.

If the ship steel structure is protected, most corrosion loss can be reduced, common methods comprise current protection, anode sacrifice, electroplating, coating paint and the like, and the coating of an organic coating, particularly an epoxy anticorrosive paint, is the most economical and effective method. A Research report issued by Grand View Research, the american market Research institute, shows that 2016, the asia pacific region, accounting for over 48% of the world's most prominent epoxy anticorrosive paint market, and particularly china, india and other southeast asia countries, where the annual growth rate of epoxy paint consumption is highest, about 8.9%. By 2024, the global market value of epoxy anticorrosive coatings is expected to reach $ 4170 billion.

However, the content of organic volatile compounds (VOC) in the epoxy anticorrosive paint for ships is generally higher at present. With the coming of environmental protection laws and regulations of various countries and the gradual enhancement of environmental protection consciousness of people, the discharge amount of VOC is gradually controlled, and the development of low-viscosity high-solid content epoxy anticorrosive paint gradually becomes one of the development trends of future paint technologies. In addition, the epoxy anticorrosive paint is easy to degrade and break chains under the irradiation of ultraviolet rays, has a chalking phenomenon and is not strong in weather resistance. In addition, the epoxy anticorrosive paint has strong molecular internal stress and poor toughness, is easy to damage under the action of external force, and further reduces the service life.

Disclosure of Invention

In order to overcome the defects of the background art, the invention provides the chitosan modified high-solid-content ship anticorrosive paint, which mainly solves the problems that the existing ship epoxy anticorrosive paint has generally high content of organic volatile compounds (VOC) and is not beneficial to environmental protection; the cable is easy to degrade and break chains, has pulverization phenomenon and low weather resistance; strong internal stress, poor toughness, easy damage under the action of external force, short service life and the like.

A chitosan modified high-solid-content ship anticorrosive paint comprises a component A and a component B

The component A comprises the following components in percentage by mass,

20-40% of epoxy furan resin

3 to 8 percent of talcum powder

1-5% of hydrogenated styrene-butadiene rubber

3-10% of zinc oxide

0.05 to 0.2 percent of chitosan

0-5% of polyamide wax slurry

0 to 5 percent of dispersant

0 to 30 percent of zinc powder

20-40% of active diluent

The balance of auxiliary materials;

the second component comprises the following components in percentage by mass,

60-90% of polyamide resin

KH550 0~20%

0 to 20 percent of butyl acetate

The mass ratio of the component A to the component B is 4: 1.

The epoxy furan resin is HF 9200.

The dispersant is BYK-163.

The reactive diluent is propoxylated glycerol triglycidyl ether.

The polyamide resin is PA66-45 HSB.

The KH550 is aminopropyl triethoxysilane.

The auxiliary materials comprise one or more of titanium dioxide, iron oxide red and indigo.

The invention has the beneficial effects that: aiming at the characteristics of easy pulverization, poor toughness and large-amount discharged voc of the epoxy anticorrosive paint for ships, the Interpenetrating Polymer Network (IPN) is built by hydrogenated styrene-butadiene rubber, and the characteristic that a hybrid aggregate is easily formed by chitosan/ZnO directional coordination arrangement is utilized to solve the key technical problems of solubility, dispersibility, low viscosity and the like, so that the novel high-solid-content ship anticorrosive paint is prepared.

The invention continues to use the construction mode of the traditional epoxy anticorrosive paint and can be constructed on the surfaces of most base materials. The coating can be made into bright and semi-bright anticorrosive paint after being cured, has excellent ultraviolet resistance, water resistance and anticorrosive performance, and is very suitable for being used in harsh marine environment.

Detailed description of the preferred embodiments

The invention is further illustrated below: a chitosan modified high-solid-content ship anticorrosive paint comprises the following components in parts by mass:

a chitosan modified high-solid-content ship anticorrosive paint comprises a component A and a component B

The component A comprises the following components in percentage by mass,

20-40% of epoxy furan resin

3 to 8 percent of talcum powder

1-5% of hydrogenated styrene-butadiene rubber

3-10% of zinc oxide

0.05 to 0.2 percent of chitosan

0-5% of polyamide wax slurry

0 to 5 percent of dispersant

0 to 30 percent of zinc powder

20-40% of active diluent

The balance of auxiliary materials;

the second component comprises the following components in percentage by mass,

60-90% of polyamide resin

KH550 0~20%

0 to 20 percent of butyl acetate

The mass ratio of the component A to the component B is 4: 1.

The epoxy furan resin is HF 9200.

The dispersant is BYK-163.

The reactive diluent is propoxylated glycerol triglycidyl ether with the molecular formula

The polyamide resin is PA66-45 HSB.

The KH550 is aminopropyl triethoxysilane.

The auxiliary materials comprise one or more of titanium dioxide, iron oxide red and indigo.