WO2018090363A1 - Method for testing aging resistance performance of paint of shipboard cable - Google Patents
Method for testing aging resistance performance of paint of shipboard cable Download PDFInfo
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- WO2018090363A1 WO2018090363A1 PCT/CN2016/106568 CN2016106568W WO2018090363A1 WO 2018090363 A1 WO2018090363 A1 WO 2018090363A1 CN 2016106568 W CN2016106568 W CN 2016106568W WO 2018090363 A1 WO2018090363 A1 WO 2018090363A1
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- G—PHYSICS
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- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
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- the invention relates to a test method for aging resistance of marine cables, which can judge the aging resistance of marine cables.
- the prior art cable does not have the paint aging resistance, accelerates aging in the long-term contact with the paint, shortens the service life of the cable, and causes electrical safety hazards.
- the object of the present invention is to overcome the problems existing in the prior art and provide a test method for aging resistance of a marine cable, which can test the aging resistance of the cable before the cable is shipped to determine whether it is suitable for marine use. Cable requirements.
- the test method for the aging resistance of the marine cable of the present invention comprises the following steps in sequence: (1) mixing the paint main agent and the curing agent according to the ratio prescribed by the ship deck anticorrosive paint and fully performing Stirring to form a mixture, diluting the mixture with a diluent according to the ratio specified in the ship deck anticorrosive paint to form a paint solution, heating the paint solution to 120 ° C and maintaining the temperature continuously; (2) will be in an environment of 25 ⁇ 5 ° C Place the 24-hour finished cable to take a 2-meter-long sample, and take ten outer sheath specimens on the sample; (3) Randomly divide the ten outer sheath specimens into two groups, the first five outer The sheath test piece is tested for tensile strength and elongation at break of the outer sheath before paint aging, and the median value of tensile strength and elongation at break of the outer sheath before paint aging is obtained; (4) the last five outer The sheath test
- the outer sheath test pieces are suspended vertically 24 hours in air at 25 ⁇ 5°C, rub the excess paint on the surface of each outer sheath test piece with cotton cloth again; (6) tensile strength and elongation at break of the last five outer sheath test pieces Test to obtain the median value of tensile strength and elongation at break of the outer sheath after aging of the paint; (7) before and after aging of the paint The tensile strength and elongation at break of the sheath were calculated as the change rate of tensile strength and the rate of change of elongation at break; (8) The rate of change of tensile strength and the rate of change of elongation at break were not more than 40%. Then, it is judged that the cable has excellent aging resistance.
- the present invention achieves the following beneficial effects: ten outer sheath test pieces are taken on the same sample section, and group comparison tests are performed to make the test data more comparable; after painting, external protection The tensile strength and elongation at break of the sleeve are the most damaged, which is the most important cause of cable failure. Therefore, the present invention measures and calculates the rate of change of tensile strength and elongation at break before and after painting, and can accurately reflect the outer sheath of the cable.
- the aging resistance of the paint is immersed in the paint solution at 120 ° C for 168 h, and the test paint temperature is similar to the maximum allowable working temperature of the outer wall of the cable, which can more realistically simulate the actual state of the cable being aged by the paint.
- the median value is taken from the test data of the five outer sheath test pieces, which can reduce the influence of the test error on the judgment result.
- the ten outer sheath test pieces in step (2) are required to comply with the provisions of IEC 60811-501-2012.
- the tensile strength and elongation at break of the outer sheath before the aging of the paint in the step (3) are carried out in accordance with the requirements of IEC 60811-501-2012.
- the test of tensile strength and elongation at break after aging of the paint in the step (6) is also carried out in accordance with the method of IEC 60811-501-2012.
- the method for testing the aging resistance of a marine cable for painting comprises the following steps: (1) mixing the main paint and the curing agent according to a ratio prescribed by the ship deck anticorrosive paint and thoroughly stirring to form a mixture, The mixture and the diluent are diluted according to the ratio specified in the ship deck anticorrosive paint to form a paint solution, the paint solution is heated to 120 ° C and maintained at this temperature; (2) the finished cable is placed in an environment of 25 ⁇ 5 ° C for 24 hours. Take a sample of 2 meters long, take ten outer sheath test pieces on the sample section; (3) randomly divide the ten outer sheath test pieces into two groups, and paint the first five outer sheath test pieces.
- each outer sheath test piece is suspended vertically in the air of 25 ⁇ 5 ° C 24 small
- the excess paint on the surface of each outer sheath test piece is lightly rubbed; (6) the tensile strength and elongation at break of the five outer sheath test pieces are respectively tested to obtain the outer sheath after the paint is aged.
- the ten outer sheath test pieces in step (2) are required to comply with the provisions of IEC 60811-501-2012.
- the tensile strength and elongation at break of the outer sheath before the aging of the paint in the step (3) were carried out in accordance with the requirements of IEC 60811-501-2012.
- the test of tensile strength and elongation at break after aging of the paint in the step (6) was also carried out in accordance with the method of IEC 60811-501-2012.
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Abstract
Disclosed is a method for testing the aging resistance performance of paint of a shipboard cable, involving firstly, preparing a paint solution, heating same and keeping same at 120ºC; taking ten outer sheath specimens from the same sampling section of a finished cable, randomly dividing the specimens into two groups, testing the tensile strength and elongation at break of an outer sheath before paint ages for the first fives specimens and respectively taking median values; respectively immersing the last five specimens in the paint solution at 120ºC for 168 h; after taking these specimens out, wiping off paint and suspending the specimens in a vertical manner for 24 h; respectively subjecting the last five specimens to tests on tensile strength and elongation at break according to the methods in IEC 60811-501-2012 and obtaining median values; respectively calculating, based on the median values of the tensile strength and elongation at break of the sheath before and after the paint ages, the rate of changes of the tensile strength and elongation at break; and where neither of the two rates of change is greater than 40%, determining the aging resistance performance of the paint to be excellent. The method can test and determine the aging resistance performance of paint of a cable before leaving the factory.
Description
本发明涉及一种船用电缆耐涂漆老化性能的测试方法，可以对船用电缆的耐涂漆老化性能进行判定。The invention relates to a test method for aging resistance of marine cables, which can judge the aging resistance of marine cables.
现有技术的电缆不具备耐油漆老化性能，在与油漆的长期接触中会加速老化，缩短电缆的使用寿命，从而引发电气安全隐患。The prior art cable does not have the paint aging resistance, accelerates aging in the long-term contact with the paint, shortens the service life of the cable, and causes electrical safety hazards.
船舶在建造时或使用一定时间后，需要对钢板进行防腐处理，涂防腐漆是防腐的重要手段。由于船舶的结构紧凑，场地狭小，在涂防腐漆的过程中，很难避免油漆喷涂在电缆表面。以往电缆被喷涂到油漆被认为是一种偶然现象，应该予以避免或者至少及时进行清理，因此国家或行业并未制定过耐涂漆老化的指标及测试方法。但从现实的使用情况看，电缆表面被喷涂到油漆普遍存在，完全避免仅存在理论上的可能，致使船用电缆的寿命缩短，整根电缆的某一段受污染，会导致整根需要提前更换，既严重浪费，又存在很大的安全隐患，船用电缆在采购前必须对其耐涂漆老化性能作出判断。When the ship is built or used for a certain period of time, the steel plate needs to be treated with anti-corrosion treatment. Applying anti-corrosion paint is an important means of anti-corrosion. Due to the compact structure of the ship and the narrow space, it is difficult to prevent the paint from being sprayed on the cable surface during the application of the anti-corrosion paint. In the past, the application of cables to paint was considered an accidental phenomenon and should be avoided or at least cleaned up in a timely manner. Therefore, the country or industry has not established indicators and test methods for aging resistance. However, from the actual use situation, the surface of the cable is sprayed to the ubiquitous paint, completely avoiding the theoretical possibility, resulting in shortening the life of the marine cable, and a certain section of the entire cable is contaminated, which will cause the whole root to be replaced in advance. It is both a serious waste and a great safety hazard. Marine cables must be judged for their aging resistance before purchasing.
发明内容Summary of the invention
本发明的目的在于，克服现有技术中存在的问题，提供一种船用电缆耐涂漆老化性能的测试方法，可以在电缆出厂前对电缆的耐涂漆老化性能进行测试，以判断是否符合船用电缆的要求。The object of the present invention is to overcome the problems existing in the prior art and provide a test method for aging resistance of a marine cable, which can test the aging resistance of the cable before the cable is shipped to determine whether it is suitable for marine use. Cable requirements.
为解决以上技术问题，本发明的一种船用电缆耐涂漆老化性能的测试方法，依次包括如下步骤：(1)将油漆主剂与固化剂按照船甲板防腐漆规定的比例进行混合并进行充分搅拌形成混合物，将该混合物与稀释剂按照船甲板防腐漆规定的比例进行稀释形成油漆溶液，将该油漆溶液加热到120℃并持续保持该温度；(2)将在25±5℃的环境下放置24小时的成品电缆取2米长的样段，在该样段上取十个外护套试件；(3)将十个外护套试件随机分为两组，对前五个外护套试件进行油漆老化前的外护套抗拉强度和断裂伸长率试验，得到油漆老化前外护套的抗拉强度和断裂伸长率的中值；(4)将后五个外护套试件分别浸入到步骤(1)所述的油漆溶液中，在120℃下保持168h；(5)从油漆溶液中取出后五个外护套试件，用棉布轻擦掉各外护套试件表面多余的油漆，将各外护套试件垂直悬挂在25±5℃的空气中24小时，再次用棉布轻擦各外护套试件表面多余的油漆；(6)对后五个外护套试件分别进行抗拉强度和断裂伸长率的试验，得到油漆老化后外护套的抗拉强度和断裂伸长率的中值；(7)以油漆老化前、后外
护套的抗拉强度和断裂伸长率中值分别计算出抗拉强度变化率和断裂伸长率变化率；(8)抗拉强度变化率和断裂伸长率变化率均不大于40％，则判断该电缆的耐涂漆老化性能优良。In order to solve the above technical problem, the test method for the aging resistance of the marine cable of the present invention comprises the following steps in sequence: (1) mixing the paint main agent and the curing agent according to the ratio prescribed by the ship deck anticorrosive paint and fully performing Stirring to form a mixture, diluting the mixture with a diluent according to the ratio specified in the ship deck anticorrosive paint to form a paint solution, heating the paint solution to 120 ° C and maintaining the temperature continuously; (2) will be in an environment of 25 ± 5 ° C Place the 24-hour finished cable to take a 2-meter-long sample, and take ten outer sheath specimens on the sample; (3) Randomly divide the ten outer sheath specimens into two groups, the first five outer The sheath test piece is tested for tensile strength and elongation at break of the outer sheath before paint aging, and the median value of tensile strength and elongation at break of the outer sheath before paint aging is obtained; (4) the last five outer The sheath test pieces are respectively immersed in the paint solution described in the step (1), and kept at 120 ° C for 168 hours; (5) five outer sheath test pieces are taken out from the paint solution, and each outer cover is lightly wiped off with a cotton cloth. Excess paint on the surface of the test piece, the outer sheath test pieces are suspended vertically 24 hours in air at 25±5°C, rub the excess paint on the surface of each outer sheath test piece with cotton cloth again; (6) tensile strength and elongation at break of the last five outer sheath test pieces Test to obtain the median value of tensile strength and elongation at break of the outer sheath after aging of the paint; (7) before and after aging of the paint
The tensile strength and elongation at break of the sheath were calculated as the change rate of tensile strength and the rate of change of elongation at break; (8) The rate of change of tensile strength and the rate of change of elongation at break were not more than 40%. Then, it is judged that the cable has excellent aging resistance.
相对于现有技术，本发明取得了以下有益效果：在同一个样段上取十个外护套试件，进行分组对比试验，使测试数据的可对比性更强；涂漆后，外护套的抗拉强度和断裂伸长率受损最大，是电缆失效的最主要原因，因此本发明测定并计算涂漆前后抗拉强度和断裂伸长率的变化率，可以准确反应电缆外护套的耐涂漆老化性能；将外护套试件浸入到120℃油漆溶液中保持168h，测试用油漆温度与电缆外壁的最高许可工作温度相仿，可以更真实地模拟电缆受涂漆老化的实际状态；分别从五个外护套试件的试验数据中取中值，可以减小试验误差对判定结果的影响。Compared with the prior art, the present invention achieves the following beneficial effects: ten outer sheath test pieces are taken on the same sample section, and group comparison tests are performed to make the test data more comparable; after painting, external protection The tensile strength and elongation at break of the sleeve are the most damaged, which is the most important cause of cable failure. Therefore, the present invention measures and calculates the rate of change of tensile strength and elongation at break before and after painting, and can accurately reflect the outer sheath of the cable. The aging resistance of the paint; the outer sheath test piece is immersed in the paint solution at 120 ° C for 168 h, and the test paint temperature is similar to the maximum allowable working temperature of the outer wall of the cable, which can more realistically simulate the actual state of the cable being aged by the paint. The median value is taken from the test data of the five outer sheath test pieces, which can reduce the influence of the test error on the judgment result.
作为本发明的优选方案，步骤(2)中的十个外护套试件都要求符合IEC 60811-501-2012中的规定。As a preferred embodiment of the invention, the ten outer sheath test pieces in step (2) are required to comply with the provisions of IEC 60811-501-2012.
作为本发明的优选方案，步骤(3)中油漆老化前的外护套抗拉强度和断裂伸长率试验按照IEC 60811-501-2012的要求进行。As a preferred embodiment of the present invention, the tensile strength and elongation at break of the outer sheath before the aging of the paint in the step (3) are carried out in accordance with the requirements of IEC 60811-501-2012.
作为本发明的优选方案，步骤(6)中油漆老化后的抗拉强度和断裂伸长率的试验也按照IEC 60811-501-2012的方法进行。As a preferred embodiment of the present invention, the test of tensile strength and elongation at break after aging of the paint in the step (6) is also carried out in accordance with the method of IEC 60811-501-2012.
本发明的一种船用电缆耐涂漆老化性能的测试方法，依次包括如下步骤：(1)将油漆主剂与固化剂按照船甲板防腐漆规定的比例进行混合并进行充分搅拌形成混合物，将该混合物与稀释剂按照船甲板防腐漆规定的比例进行稀释形成油漆溶液，将该油漆溶液加热到120℃并持续保持该温度；(2)将在25±5℃的环境下放置24小时的成品电缆取2米长的样段，在该样段上取十个外护套试件；(3)将十个外护套试件随机分为两组，对前五个外护套试件进行油漆老化前的外护套抗拉强度和断裂伸长率试验，得到油漆老化前外护套的抗拉强度和断裂伸长率的中值；(4)将后五个外护套试件分别浸入到步骤(1)所述的油漆溶液中，在120℃下保持168h；(5)从油漆溶液中取出后五个外护套试件，用棉布轻擦掉各外护套试件表面多余的油漆，将各外护套试件垂直悬挂在25±5℃的空气中24小时，再次用棉布轻擦各外护套试件表面多余的油漆；(6)对后五个外护套试件分别进行抗拉强度和断裂伸长率的试验，得到油漆老化后外护套的抗拉强度和断裂伸长率的中值；(7)以油漆老化前、后外护套的抗拉强度和断裂伸长率中值分别计算出抗拉强度变化率和断裂伸长率变化率；(8)抗拉强度变化率和断裂伸长率变化率均不大于40％，则判断该电缆的耐涂漆老化性能优良。The method for testing the aging resistance of a marine cable for painting according to the present invention comprises the following steps: (1) mixing the main paint and the curing agent according to a ratio prescribed by the ship deck anticorrosive paint and thoroughly stirring to form a mixture, The mixture and the diluent are diluted according to the ratio specified in the ship deck anticorrosive paint to form a paint solution, the paint solution is heated to 120 ° C and maintained at this temperature; (2) the finished cable is placed in an environment of 25 ± 5 ° C for 24 hours. Take a sample of 2 meters long, take ten outer sheath test pieces on the sample section; (3) randomly divide the ten outer sheath test pieces into two groups, and paint the first five outer sheath test pieces. Tensile strength and elongation at break of the outer sheath before aging, the median values of tensile strength and elongation at break of the outer sheath before aging of the paint were obtained; (4) the last five outer sheath specimens were immersed separately To the paint solution described in the step (1), hold at 120 ° C for 168 h; (5) remove the outer sheath test pieces from the paint solution, and wipe off the excess surface of each outer sheath test piece with a cotton cloth. Paint, each outer sheath test piece is suspended vertically in the air of 25 ± 5 ° C 24 small When the cotton cloth is used again, the excess paint on the surface of each outer sheath test piece is lightly rubbed; (6) the tensile strength and elongation at break of the five outer sheath test pieces are respectively tested to obtain the outer sheath after the paint is aged. The median value of tensile strength and elongation at break; (7) The change of tensile strength and elongation at break of the tensile strength and elongation at break of the outer sheath before and after aging of the paint (8) The rate of change of tensile strength and the rate of change of elongation at break are not more than 40%, and it is judged that the aging resistance of the cable is excellent.
步骤(2)中的十个外护套试件都要求符合IEC 60811-501-2012中的规定。
The ten outer sheath test pieces in step (2) are required to comply with the provisions of IEC 60811-501-2012.
步骤(3)中油漆老化前的外护套抗拉强度和断裂伸长率试验按照IEC 60811-501-2012的要求进行。The tensile strength and elongation at break of the outer sheath before the aging of the paint in the step (3) were carried out in accordance with the requirements of IEC 60811-501-2012.
步骤(6)中油漆老化后的抗拉强度和断裂伸长率的试验也按照IEC 60811-501-2012的方法进行。The test of tensile strength and elongation at break after aging of the paint in the step (6) was also carried out in accordance with the method of IEC 60811-501-2012.
以上所述仅为本发明之较佳可行实施例而已，非因此局限本发明的专利保护范围。除上述实施例外，本发明还可以有其他实施方式。凡采用等同替换或等效变换形成的技术方案，均落在本发明要求的保护范围内。本发明未经描述的技术特征可以通过或采用现有技术实现，在此不再赘述。
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the invention. Other than the above-described embodiments, the present invention may have other embodiments. Any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope of the present invention. The technical features that are not described in the present invention can be implemented by using or adopting the prior art, and details are not described herein again.
Claims (4)
- 一种船用电缆耐涂漆老化性能的测试方法，其特征在于，依次包括如下步骤：⑴将油漆主剂与固化剂按照船甲板防腐漆规定的比例进行混合并进行充分搅拌形成混合物，将该混合物与稀释剂按照船甲板防腐漆规定的比例进行稀释形成油漆溶液，将该油漆溶液加热到120℃并持续保持该温度；⑵将在25±5℃的环境下放置24小时的成品电缆取2米长的样段，在该样段上取十个外护套试件；⑶将十个外护套试件随机分为两组，对前五个外护套试件进行油漆老化前的外护套抗拉强度和断裂伸长率试验，得到油漆老化前外护套的抗拉强度和断裂伸长率的中值；⑷将后五个外护套试件分别浸入到步骤⑴所述的油漆溶液中，在120℃下保持168h；⑸从油漆溶液中取出后五个外护套试件，用棉布轻擦掉各外护套试件表面多余的油漆，将各外护套试件垂直悬挂在25±5℃的空气中24小时，再次用棉布轻擦各外护套试件表面多余的油漆；⑹对后五个外护套试件分别进行抗拉强度和断裂伸长率的试验，得到油漆老化后外护套的抗拉强度和断裂伸长率的中值；⑺以油漆老化前、后外护套的抗拉强度和断裂伸长率中值分别计算出抗拉强度变化率和断裂伸长率变化率；⑻抗拉强度变化率和断裂伸长率变化率均不大于40％，则判断该电缆的耐涂漆老化性能优良。The invention relates to a test method for aging resistance of marine cable paint, which comprises the following steps: (1) mixing a paint main agent and a curing agent according to a ratio prescribed by a ship deck anticorrosive paint and sufficiently stirring to form a mixture, the mixture is Dilute with a thinner according to the ratio specified in the ship deck anticorrosive paint to form a paint solution, heat the paint solution to 120 ° C and maintain the temperature; (2) take 2 hours of the finished cable placed in an environment of 25 ± 5 ° C for 24 hours. For the long sample section, take ten outer sheath test pieces on the sample section; (3) randomly divide the ten outer sheath test pieces into two groups, and perform external protection before the paint aging on the first five outer sheath test pieces. Set the tensile strength and elongation at break test to obtain the median value of tensile strength and elongation at break of the outer sheath before aging of the paint; (4) immerse the last five outer sheath specimens into the paint described in step (1) In the solution, hold at 120 ° C for 168 h; (5) remove the five outer sheath test pieces from the paint solution, gently wipe off the excess paint on the surface of each outer sheath test piece with a cotton cloth, and vertically suspend the outer sheath test pieces. Air at 25 ± 5 ° C 24 hours, once again wipe the excess paint on the surface of each outer sheath test piece with cotton cloth; (6) Test the tensile strength and elongation at break of the last five outer sheath test pieces to obtain the outer sheath after the paint aging The median value of tensile strength and elongation at break; (7) Calculate the rate of change of tensile strength and rate of elongation at break of the tensile strength and elongation at break of the outer sheath before and after aging of the paint; (8) When the rate of change of tensile strength and the rate of change of elongation at break are not more than 40%, it is judged that the aging resistance of the cable is excellent.
- 根据权利要求1所述的一种船用电缆耐涂漆老化性能的测试方法，其特征在于：步骤⑵中的十个外护套试件都要求符合IEC60811-501-2012中的规定。The method for testing the aging resistance of marine cable paint according to claim 1, characterized in that the ten outer sheath test pieces in step (2) are required to comply with the provisions of IEC60811-501-2012.
- 根据权利要求1所述的一种船用电缆耐涂漆老化性能的测试方法，其特征在于：步骤⑶中油漆老化前的外护套抗拉强度和断裂伸长率试验按照IEC60811-501-2012的要求进行。The method for testing the aging resistance of a marine cable paint according to claim 1, characterized in that the tensile strength and elongation at break of the outer sheath before the aging of the paint in the step (3) are in accordance with IEC60811-501-2012. Requested.
- 根据权利要求3所述的一种船用电缆耐涂漆老化性能的测试方法，其特征在于：步骤⑹中油漆老化后的抗拉强度和断裂伸长率的试验也按照IEC60811-501-2012的方法进行。 The method for testing the aging resistance of marine cable paint according to claim 3, characterized in that the test of tensile strength and elongation at break of the paint after aging in step (6) is also in accordance with the method of IEC60811-501-2012. get on.
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