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Hypothermal nontoxic phosphatization liquid containing accelerant of hydroxylamine sulfate, and preparation method

A technology of hydroxylamine sulfate and accelerator, which is applied in the field of surface chemistry, can solve the problems of not getting rid of nitrite, etc., achieve the effect of long sediment formation time, benefit the health of workers, and reduce environmental pollution

Inactive Publication Date: 2007-09-26
大连理工大学技术转移中心有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

Although some low and room temperature phosphating solutions have been developed and applied in recent years, most of them have not gotten rid of nitrite

Method used

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  • Hypothermal nontoxic phosphatization liquid containing accelerant of hydroxylamine sulfate, and preparation method

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Embodiment Construction

[0032] Low-temperature non-toxic phosphating solution containing hydroxylamine sulfate accelerator, the total volume is 1L, and the composition ratio is,

[0033] HNO 3 10ml / L, ZnO 10g / L,

[0034] h 3 PO 4 15ml / L, CuSO 4 .5H 2 O 0.7g / L,

[0035] Hydroxylamine sulfate 2.0g / L, Na 2 MoO 4 .2H 2 O 0.04g / L,

[0036] NaClO 3 1.0g / L, C 6 h 8 o 7 .H 2 O 3.0g / L

[0037] Tap water balance

[0038] The preparation method of the low-temperature non-toxic phosphating solution containing hydroxylamine sulfate promotor, the steps are:

[0039] (1) Put the weighed zinc oxide into tap water and dissolve;

[0040] (2) The weighed H 3 PO 4 、HNO 3 Slowly pour into the turbid solution of (1) successively, and keep stirring;

[0041] (3) When the solution of (2) is completely dissolved, add the main accelerator hydroxylamine sulfate and additive CuSO in sequence 4 .5H 2 O, Na 2 MoO 4 .2H 2 O, NaClO 3 、C 6 h 8 o 7 .H 2 O, and keep stirring;

[0042] (...

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Abstract

A low temperature atomic phosphide liquor containing hydroxylamine sulfate accelerant is composed of HNO3: 10-15ml / L, H3PO412-18ml / L, ZnO 8-12G / l, CuSO4, 5H2O 0.6-1.0G / l, HAS 2.0-4.0g / L, Na2 MoO4 2H2o 0.03-0.05%g / L, NaC103 0.8-1.3G / l, C6H8O7. H2O 2.0-3.0g / L characterizing in taking hydroxylamine sulfate accelerant as the master accelerant matched with other additives.

Description

technical field [0001] The invention belongs to the technical field of surface chemistry. Used for surface treatment of steel before painting. Background technique [0002] Phosphating is a surface chemical technology, which has broad application and development prospects in industries such as automobiles, chemicals, ships, aerospace and household appliances. Based on the requirements of energy saving, environmental protection and emphasis on workers' health, low-temperature low-slag phosphating, environmental protection and non-toxic phosphating are the main research directions in the field of phosphating, and it is also an inevitable trend. [0003] Studies have shown that the accelerator is one of the important factors that determine the growth rate and quality of the phosphating film, especially the low and room temperature phosphating solution. At present, the most widely used and most effective accelerator in industry is nitrite. However, due to the high toxicity of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/14
Inventor 李淑英
Owner 大连理工大学技术转移中心有限公司
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