阅读说明：本技术 绝缘子用室温硫化硅橡胶专用剥离剂及剥离方法 (Special stripping agent for room temperature vulcanized silicone rubber for insulator and stripping method ) 是由 陈智 朱仕惠 兰洋 王芹 于 2020-04-13 设计创作，主要内容包括：本发明公开了一种绝缘子用室温硫化硅橡胶专用剥离剂及剥离方法,该剥离剂由以下质量份组分组成：溶剂丁酮50-70份,助溶剂甲醇10-30份,剥离助剂浓盐酸10-20份,功能助剂浓硫酸5-10份,助洗剂乙酸乙酯2-5份。该剥离剂可有效剥离涂覆有室温硫化硅橡胶(RTV)的绝缘子(玻璃或陶瓷绝缘子)表面的RTV涂层,使绝缘子表面恢复光洁、平整。从而达到回收再利用,减少污染的作用。(The invention discloses a special stripping agent for room temperature vulcanized silicone rubber for insulators and a stripping method, wherein the stripping agent comprises the following components in parts by mass: 50-70 parts of solvent butanone, 10-30 parts of cosolvent methanol, 10-20 parts of stripping aid concentrated hydrochloric acid, 5-10 parts of functional aid concentrated sulfuric acid and 2-5 parts of builder ethyl acetate. The stripping agent can effectively strip the room temperature vulcanized silicone Rubber (RTV) coating on the surface of an insulator (a glass or ceramic insulator) coated with the RTV coating, so that the surface of the insulator is smooth and flat. Thereby achieving the effects of recycling and reducing pollution.)

1. The special stripping agent for room temperature vulcanized silicone rubber for the insulator is characterized by comprising the following components in parts by weight: the adhesive comprises the following components in parts by mass: 50-70 parts of solvent, 10-30 parts of cosolvent, 10-20 parts of stripping aid, 5-10 parts of functional aid and 2-5 parts of builder; the solvent is butanone or acetone; the cosolvent is any one of methanol, ethanol or n-butanol; the stripping auxiliary agent is concentrated hydrochloric acid, and the functional auxiliary agent is concentrated sulfuric acid or concentrated nitric acid; the builder is any one of ethyl acetate, butyl acetate or propylene glycol methyl ether acetate.

2. A stripping method of room temperature vulcanized silicone rubber for insulators is characterized in that: the method comprises the following steps:

1) mixing the solvent, the cosolvent and the builder as defined in claim 1, and dispersing at 300-500r/min for 5min to obtain a mixed solution;

2) slowly adding the stripping aid described in claim 1 into the mixed solution obtained in the step 1), and dispersing for 5min at the speed of 300-500 r/min;

3) slowly adding the functional assistant in the claim 1 into the mixed solution obtained in the step 2), and dispersing for 5min at the speed of 300-500r/min to obtain the special stripping agent for the room temperature vulcanized silicone rubber for the insulator;

4) soaking the insulator coated with the room temperature vulcanized silicone rubber in the special stripping agent for the room temperature vulcanized silicone rubber for the insulator in the step 3) for 24 hours;

5) taking out the insulator soaked in the step 4), and directly stripping the room temperature vulcanized silicone rubber on the surface of the insulator after wearing the acid and alkali resistant rubber gloves.

3. The method for peeling room temperature vulcanizing silicone rubber for an insulator according to claim 2, characterized in that: the adhesive comprises the following components in parts by mass: 50-70 parts of solvent, 10-30 parts of cosolvent, 10-20 parts of stripping aid, 5-10 parts of functional aid and 2-5 parts of builder; the solvent is butanone; the cosolvent is methanol; the stripping auxiliary agent is concentrated hydrochloric acid; the functional auxiliary agent is concentrated sulfuric acid; the builder is ethyl acetate.

4. The method for peeling room temperature vulcanized silicone rubber for insulators according to claim 3, characterized in that: the insulator is a ceramic insulator or a glass insulator.

Technical Field

The invention belongs to the field of power equipment recycling, and particularly relates to a special stripping agent for room temperature vulcanized silicone rubber for an insulator and a stripping method.

Background

The insulator is the most common insulating device in power transmission, and can be divided into a ceramic insulator, a glass insulator and a composite insulator according to different insulating materials, wherein the ceramic insulator and the glass insulator are more applied. In some areas with environmental pollution, room temperature vulcanized silicone Rubber (RTV) coating is commonly applied to insulators (ceramic or glass insulators) for power transmission to improve the hydrophobicity and hydrophobic migration performance of the surface of the insulator, so as to improve the flashover voltage of the insulator and reduce the risk of pollution flashover of the insulator. However, when the insulators (ceramic or glass insulators) coated with the room temperature vulcanized silicone Rubber (RTV) are used, due to weather and environmental reasons, the hydrophobicity and the hydrophobic migration performance of the room temperature vulcanized silicone Rubber (RTV) coating are reduced or lost, so that the anti-pollution flashover capability of the insulators is reduced, and the safety of power transmission is seriously influenced. At present, room temperature vulcanized silicone Rubber (RTV) insulators with reduced anti-pollution flashover capability are generally replaced directly, so that environmental pollution and waste of insulation devices are caused.

Disclosure of Invention

In order to reduce pollution caused by room temperature vulcanized silicone Rubber (RTV) insulators with reduced anti-pollution flashover capability and waste of insulating devices, the invention aims to provide a special stripper for the RTV insulators and a stripping method, so as to achieve the effects of recycling the insulators (ceramic or glass insulators) and reducing environmental pollution. Ensure low loss and low pollution of the insulating device of the electric power transportation system. The stripping agent can effectively strip the RTV coating on the surface of the RTV insulator with reduced anti-pollution flashover capability, so that the surface of the insulator returns to be smooth and flat to achieve the effect of recycling.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

in a first aspect, the invention provides a special stripping agent for room temperature vulcanized silicone Rubber (RTV) for insulators, which is characterized in that: the adhesive comprises the following components in parts by mass: 50-70 parts of solvent, 10-30 parts of cosolvent, 10-20 parts of stripping aid, 5-10 parts of functional aid and 2-5 parts of builder; the solvent is butanone or acetone; the cosolvent is any one of methanol, ethanol or n-butanol; the stripping auxiliary agent is concentrated hydrochloric acid, and the functional auxiliary agent is concentrated sulfuric acid (H)₂SO₄) Or concentrated nitric acid (HNO)₃) (ii) a The builder is any one of ethyl acetate, butyl acetate or propylene glycol methyl ether acetate.

In a second aspect, the invention provides a preparation method of a special stripping agent for room temperature vulcanized silicone Rubber (RTV) for insulators.

The second aspect of the present invention provides a method for peeling room temperature vulcanized silicone Rubber (RTV) for an insulator, characterized in that: the method comprises the following steps:

1) mixing the solvent, the cosolvent and the builder as defined in claim 1, and dispersing at 300-500r/min for 5min to obtain a mixed solution;

2) slowly adding the stripping aid described in claim 1 into the mixed solution obtained in the step 1), and dispersing for 5min at the speed of 300-500 r/min;

3) slowly adding the functional assistant in the claim 1 into the mixed solution obtained in the step 2), and dispersing for 5min at the speed of 300-500r/min to obtain the special stripping agent for room temperature vulcanized silicone Rubber (RTV) for the insulator;

4) soaking the insulator coated with room temperature vulcanized silicone Rubber (RTV) in the special stripping agent for room temperature vulcanized silicone Rubber (RTV) for the insulator in the step 3) for 24 hours;

5) taking out the insulator soaked in the step 4), and directly stripping room temperature vulcanized silicone Rubber (RTV) on the surface of the insulator after wearing acid and alkali resistant rubber gloves.

The preferable scheme is that the adhesive comprises the following components in parts by mass: 50-80 parts of the solvent, 10-30 parts of the cosolvent, 10-20 parts of the stripping aid, 5-10 parts of the functional aid and 2-5 parts of the builder; the solvent is butanone; the cosolvent is methanol; the stripping auxiliary agent is concentrated hydrochloric acid; the functional auxiliary agent is concentrated sulfuric acid; the builder is ethyl acetate.

Further, the insulator is a ceramic insulator or a glass insulator.

The invention has the following advantages and beneficial effects:

after the special stripper for room temperature vulcanized silicone Rubber (RTV) for the insulator effectively strips the room temperature vulcanized silicone Rubber (RTV) on the surface of the insulator, the surface of the insulator is smooth and flat, so that the insulator meets the requirement of recycling. Pollution and waste of insulation devices caused by room temperature vulcanized silicone Rubber (RTV) insulators with reduced anti-pollution flashover capability are reduced.

Detailed Description

The present invention will be further described with reference to the following specific examples, but the present invention is not limited thereto.