阅读说明：本技术 一种酸洗剂添加剂及其制备方法 (Pickling agent additive and preparation method thereof ) 是由 张海超 于 2020-05-20 设计创作，主要内容包括：本发明公开了一种酸洗剂添加剂及其制备方法,涉及酸洗剂技术领域,所述的酸洗剂添加剂包括如下重量份数的原料组分：混合酸2-5份、缓蚀剂、0.2-0.4份、稳定剂0.2-0.4份、水80-85份；所述的混合酸有如下原料组分组成：柠檬酸、草酸和盐酸。所述的制备方法,步骤如下：S1.在水中加入稳定剂,搅拌均匀；S2.在步骤S1中的产物中分别加入混合酸、缓蚀剂,搅拌30分钟,制得酸洗剂添加剂。本发明提供的酸洗剂添加剂对金属材料有良好的除油效果,能够高效去除金属材料表面的锈迹,不会发生过腐蚀和氢脆现象,大大延长了金属材料的使用寿命,酸洗效果显著；本发明提供的的酸洗剂添加剂的制备方法操作简单,便于生产。(The invention discloses a pickling agent additive and a preparation method thereof, and relates to the technical field of pickling agents, wherein the pickling agent additive comprises the following raw material components in parts by weight: 2-5 parts of mixed acid, 0.2-0.4 part of corrosion inhibitor, 0.2-0.4 part of stabilizer and 80-85 parts of water; the mixed acid comprises the following raw material components: citric acid, oxalic acid and hydrochloric acid. The preparation method comprises the following steps: s1, adding a stabilizer into water, and uniformly stirring; s2, respectively adding the mixed acid and the corrosion inhibitor into the product obtained in the step S1, and stirring for 30 minutes to obtain the pickling agent additive. The pickling agent additive provided by the invention has a good oil removing effect on a metal material, can efficiently remove rust on the surface of the metal material, does not generate over-corrosion and hydrogen embrittlement phenomena, greatly prolongs the service life of the metal material, and has a remarkable pickling effect; the preparation method of the pickling agent additive provided by the invention is simple to operate and convenient to produce.)

1. The pickling agent additive is characterized in that: the pickling agent additive comprises the following raw material components in parts by weight: 2-5 parts of mixed acid, 0.2-0.4 part of corrosion inhibitor, 0.2-0.4 part of stabilizer and 80-85 parts of water; the mixed acid comprises the following raw material components: citric acid, oxalic acid and hydrochloric acid.

2. The acid wash additive of claim 1, characterized in that: the weight part ratio of the citric acid to the oxalic acid to the hydrochloric acid is (1-3): (1-2): (1-2).

3. The acid wash additive of claim 2, wherein: the corrosion inhibitor is one of hexamethylenetetramine, triethanolamine and glacial acetic acid.

4. The acid wash additive of claim 3, wherein: the stabilizing agents are sodium oxalate and sodium citrate.

5. The acid pickling agent additive according to claim 4, wherein: the weight part ratio of the sodium oxalate to the sodium citrate is (1-3): (1-3).

6. The acid pickling agent additive according to claim 5, wherein: the pickling agent additive comprises the following raw material components in parts by weight: 4 parts of mixed acid, 0.2 part of corrosion inhibitor, 0.4 part of stabilizer and 85 parts of water.

7. The acid pickling agent additive according to claim 5, wherein: the pickling agent additive comprises the following raw material components in parts by weight: 3.5 parts of mixed acid, 0.2 part of corrosion inhibitor, 0.3 part of stabilizer and 82 parts of water.

8. The acid pickling agent additive according to claim 5, wherein: the pickling agent additive comprises the following raw material components in parts by weight: 3 parts of mixed acid, 0.2 part of corrosion inhibitor, 0.2 part of stabilizer and 80 parts of water.

9. The process for preparing the acid pickling additive as claimed in any one of claims 1 to 8, wherein: the preparation method comprises the following steps: s1, adding a stabilizer into water, and uniformly stirring; s2, respectively adding the mixed acid and the corrosion inhibitor into the product obtained in the step S1, and stirring for 30 minutes to obtain the pickling agent additive.

Technical Field

The invention relates to the technical field of pickling agents, and particularly relates to a pickling agent additive and a preparation method thereof.

Background

Various dirt can be adhered to the metal material in the processes of processing, storing, transporting and using, if the metal material is not cleaned in time, the cleanness of the surface of the metal material can be influenced, the corrosion of the surface of the metal material can be caused and accelerated, the quality of the metal material is further influenced, and the service life is shortened.

The pickling agent is mainly used for pickling and brightening metal materials such as stainless steel, aluminum materials, steel pieces and the like, has the effects of removing oil, rust, brightening, passivating and preventing rust, inhibiting fog and the like, and greatly shortens the cleaning time.

The traditional pickling agent adopts inorganic acid, wherein hydrochloric acid is adopted as the pickling agent, so that the cost is low, the efficiency is high, the over corrosion is small, and the hydrochloric acid has volatility; nitric acid is used as a pickling agent, yellow smoke can be generated in use, and the damage to workers is large. When organic acid is used as a pickling agent, the metal physical properties are affected by the hydrogen embrittlement phenomenon.

At present, no pickling agent additive which is compounded by inorganic acid and organic acid exists, the pickling efficiency is high, the over-corrosion is small, and the hydrogen embrittlement phenomenon cannot be generated.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a pickling agent additive, which is characterized in that: the pickling agent additive comprises the following raw material components in parts by weight: 2-5 parts of mixed acid, 0.2-0.4 part of corrosion inhibitor, 0.2-0.4 part of stabilizer and 80-85 parts of water; the mixed acid comprises the following raw material components: citric acid, oxalic acid and hydrochloric acid.

Preferably, the weight part ratio of the citric acid to the oxalic acid to the hydrochloric acid is (1-3): (1-2): (1-2).

Preferably, the corrosion inhibitor is one of hexamethylenetetramine, triethanolamine and glacial acetic acid.

Preferably, the stabilizers are sodium oxalate and sodium citrate.

Preferably, the final part ratio of the sodium oxalate to the sodium citrate is (1-3): (1-3).

Preferably, the pickling agent additive comprises the following raw material components in parts by weight: 4 parts of mixed acid, 0.2 part of corrosion inhibitor, 0.4 part of stabilizer and 85 parts of water.

Preferably, the pickling agent additive comprises the following raw material components in parts by weight: 3.5 parts of mixed acid, 0.2 part of corrosion inhibitor, 0.3 part of stabilizer and 82 parts of water.

Preferably, the pickling agent additive comprises the following raw material components in parts by weight: 3 parts of mixed acid, 0.2 part of corrosion inhibitor, 0.2 part of stabilizer and 80 parts of water.

The preparation method of the pickling agent additive comprises the following steps: s1, adding a stabilizer into water, and uniformly stirring; s2, respectively adding the mixed acid and the corrosion inhibitor into the product obtained in the step S1, and stirring for 30 minutes to obtain the pickling agent additive.

The pickling agent additive provided by the invention is prepared by compounding citric acid, oxalic acid and hydrochloric acid, so that the hydrogen embrittlement phenomenon generated by pickling metal materials with organic acid can be avoided, the defect of high volatility of hydrochloric acid can be avoided by reducing the consumption of hydrochloric acid, and the corrosion inhibitor is added in the formula, so that over-corrosion and substrate corrosion cannot occur in the pickling process.

The invention has the beneficial effects that: the pickling agent additive provided by the invention has a good oil removing effect on a metal material, can efficiently remove rust on the surface of the metal material, does not generate over-corrosion and hydrogen embrittlement phenomena, greatly prolongs the service life of the metal material, and has a remarkable pickling effect; the preparation method of the pickling agent additive provided by the invention is simple to operate and convenient to produce.

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.