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application research
Twelve
Study on antiskid and wear resistant coating for marine engineering composite materials
Abstract: a kind of anti-skid and wear-resistant coating for composite materials was prepared by using bisphenol-A epoxy resin and polyamide curing agent as the main base materials and carborundum and modified alumina as the anti-skid and wear-resistant aggregate. The effects of curing agent, alumina content and emery particle size on the wear resistance of the coating were investigated by orthogonal test. The influence of emery particle size and different particle size ratio on the anti-skid performance of the coating was investigated by control variable method. The weathering performance of the coating was evaluated by ultraviolet aging test and salt spray test. The results show that when epoxy resin / polyamide curing agent is used as resin matrix and carborundum and alumina are used as anti-skid and wear-resistant aggregate, the coating has good wear resistance and the friction coefficient can reach 0.93. In addition, the coating has good weather resistance, which can meet the use requirements in the marine atmosphere environment.
Authors: Meng Yuchen, Wang Yanhui, Jing Rong, Zhang Ruitao, Zhang Xinggang (Luoyang Shuangrui Rubber Plastic Technology Co., Ltd., Luoyang, Henan 471003)
Thirteen
Study on compatibility of anticorrosive coating and sealant
Abstract: the integrated fuel tank is widely used in various types of aircraft due to its characteristics of large fuel load and light weight. Special sealing and anti-corrosion coating system is required on its inner surface to ensure that the integrated fuel tank has high "three proofing" capability and sealing performance, and improve the reliability and long life of the integrated fuel tank. In this paper, the compatibility of 454-4-1 anti-corrosion coating with domestic fuel oil and hm113b-4, hm116c-8 sealant is studied according to the test design of the matching performance of the whole fuel tank material. The test results show that 454-4-1 coating has good water resistance, salt water resistance, fuel oil resistance and No.15 aviation hydraulic oil resistance. 454-4-1 coating has good adhesion with hm116c-8 and hm113b-4 sealant surfaces. Anodized aluminum alloy + 454-4-1 coating + njd-3 primer + hm116c-8 / hm113b-4 sealant constitute the whole oil tank sealing system. The compatibility between the materials is good, which can meet the requirements of adhesion between layers of the coating system.
Author: Dai Xiaoying, sun Xiaobo, Wang Bo (aviation industry Xi'an Aircraft Industry (Group) Co., Ltd., Xi'an 710089)
Scientific viewpoint
Fourteen
Analysis on the development trend of coating and coating for construction machinery
Abstract: the development of construction machinery coating is not only related to the needs of construction machinery users, the coating function of construction machinery products, the development of construction machinery itself, but also related to the development of coating technology and products, coating construction technology and equipment, national and local environmental protection policies, automation technology, etc. Under the influence of the above factors, the painting appearance of construction machinery will develop towards decoration, personalization, color diversification, etc., the painting will develop towards water-based, powdered, high solid differentiation and multi-functional, the painting will develop towards the finishing, concentration and specialization of parts and components, the integration of painting materials, and the painting equipment towards the integration, automation and digital of pretreatment and painting And intelligent development.
Author: Zhang Rui (Shantui Construction Machinery Co., Ltd., Shandong Jining 272000)
Fifteen
Analysis of LNG terminal corrosion
Abstract: most LNG terminals in China are located in coastal areas, which are in high humidity and salt fog environment for a long time. According to iso12944 atmospheric corrosion environment classification, they belong to C4 or c5-m level. With the prolongation of LNG terminal's service life, its corrosion problem becomes more and more serious. This paper introduces the process, material, operation medium and original anticorrosion measures of LNG terminal. On this basis, it analyzes the common corrosion problems of LNG terminal, and analyzes the causes, so as to provide reference for anticorrosion design, operation and maintenance of new LNG terminal.
Authors: Hou Hailong, Hou Jianguo, Wang Xiulin, Li Youwu, Chen Hui, song Pengfei, Zhang Yu (CNOOC Group Co., Ltd., Beijing 100028)
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