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Phosphorus-free degreasing powder, production process and phosphorus-free degreasing process thereof

A production process, oil powder technology, applied in the production process and non-phosphorus degreasing process, the field of non-phosphorus degreasing powder, can solve the problems that restrict the large-scale application of non-phosphorus degreasing powder, high working concentration, slow degreasing speed, etc. , to achieve the effect of excellent cleaning effect, low concentration and fast degreasing speed

Inactive Publication Date: 2012-06-13
东莞市宝中实业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, even if the phosphorus-free degreasing powder obtained by research is present, the surfactant in the composition is only a single surfactant, or a simple compound of several surfactants, the dispersion effect is poor, and the degreasing effect is similar to that of There is still a big gap compared with phosphorus-containing cleaning agents, and its working concentration is high, and the degreasing speed is slow, which seriously restricts the large-scale application of phosphorus-free degreasing powder

Method used

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  • Phosphorus-free degreasing powder, production process and phosphorus-free degreasing process thereof
  • Phosphorus-free degreasing powder, production process and phosphorus-free degreasing process thereof
  • Phosphorus-free degreasing powder, production process and phosphorus-free degreasing process thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Prepare non-phosphorus degreasing powder according to the production process of the present invention, and the composition of non-phosphorus degreasing powder is as shown in table 1:

[0046] Table 1. Composition of phosphorus-free degreasing powder

[0047] raw material

Mass percentage (%)

Compound Surfactant

20

sodium hydroxide

30

Complexing agent A92R

2

Builder SoKalan CP5

10

Sodium carbonate

20

sodium sulfate

18

[0048] The compounded surfactant is obtained by compounding 60wt% of nonionic surfactant, 30wt% of anionic surfactant, 5wt% of penetrating agent and 5wt% of wetting agent.

[0049] The non-phosphorous degreasing process of non-phosphorus degreasing powder, it comprises the following steps:

[0050] (1) Prepare a degreasing liquid with a concentration of 40g / L from phosphorus-free degreasing powder and water, and add it to a PVC cleaning tank. The pH of the d...

Embodiment 2

[0054] Prepare non-phosphorus degreasing powder according to the production process of the present invention, and the composition of non-phosphorus degreasing powder is as shown in table 2:

[0055] Table 2. Composition of phosphorus-free degreasing powder

[0056] raw material

Mass percentage (100%)

Surfactant

12

sodium hydroxide

10

Complexing agent A92R

8

Builder SoKalan CP5

15

Sodium carbonate

30

sodium sulfate

25

[0057] The non-phosphorous degreasing process of non-phosphorus degreasing powder, it comprises the following steps:

[0058] (1) Prepare a degreasing liquid with a concentration of 50g / L by mixing phosphorus-free degreasing powder and water, add it to the PVC cleaning tank, adjust the pH of the degreasing liquid to 10, use stainless steel tubes to heat, and adjust the temperature of the degreasing liquid is 90°C.

[0059] (2) Soak and clean the workpiece in the...

Embodiment 3

[0062] Prepare non-phosphorus degreasing powder according to production process of the present invention, and the composition of non-phosphorus degreasing powder is as shown in table 3:

[0063] Table 3. Composition of phosphorus-free degreasing powder

[0064] raw material

mass percentage

Surfactant

15

sodium hydroxide

25

Complexing agent A92R

10

Builder SoKalan CP5

10

Sodium carbonate

25

sodium sulfate

15

[0065] The non-phosphorous degreasing process of non-phosphorus degreasing powder, it comprises the following steps:

[0066] (1) Prepare a degreasing liquid with a concentration of 60g / L by mixing phosphorus-free degreasing powder and water, add it to the PVC cleaning tank, adjust the pH of the degreasing liquid to 8.8, use stainless steel tubes to heat, and adjust the temperature of the degreasing liquid is 45°C.

[0067] (2) Soak and clean the workpiece in the degreasi...

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Abstract

The present invention relates to phosphorus-free degreasing powder. The phosphorus-free degreasing powder comprises, by mass, 2-20% of a surfactant, 10-40% of sodium hydroxide, 2-15% of a complexing agent A92R, 2-15% of a washing assistant SoKalan CP5, 10-30% of sodium carbonate, and 5-25% of sodium sulfate. The phosphorus-free degreasing liquid prepared by the phosphorus-free degreasing powder of the present invention does not contain phosphorus, and has characteristics of environment-friendly property, good cleaning effect, wide application range, and long service life, and the generated wastewater is easy to treat.

Description

technical field [0001] The invention relates to a degreasing powder, in particular, the invention relates to a phosphorus-free degreasing powder, a production process and a phosphorus-free degreasing process, which are suitable for pre-plating and pre-coating treatment of steel and stainless steel pipe products. Background technique [0002] Degreasing powder, alias degreasing powder, is widely used in metal plastic electroplating, a pretreatment chemical in the spraying industry, and is also used in various hardware cleaning industries. It can be divided into chemical degreasing powder and electrolytic degreasing powder according to its properties. According to the type, it can also be divided into steel degreasing powder and alloy degreasing powder. [0003] Degreasing powder is a low-foaming degreasing and degreasing agent refined from a variety of high-quality surfactants, detergents, penetrants, builders, etc. It has good wetting, solubilizing and emulsifying capabiliti...

Claims

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Application Information

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IPC IPC(8): C23G1/14
Inventor 李洪梁纪元梁尹琦戴华玉雷鑫胡常兰
Owner 东莞市宝中实业发展有限公司
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