Preparation method of non-silicon defoaming agent

A technology of non-silicon defoamer and silicone oil, applied in the field of preparation of non-silicon defoamer, can solve the problems of insufficient chemical stability, slow defoaming speed, poor strong alkali resistance, etc., and achieve thermal stability and chemical stability. Good effect, low production cost, excellent defoaming performance

Active Publication Date: 2013-01-30
佛山市华联有机硅有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, organosilicon defoamers have the characteristics of rapid defoaming, long antifoaming time, safety and non-toxicity, etc., but they are insoluble in water, poor in strong alkali resistance, and prone to shrinkage and oil spots. Silicone defoamer cannot be used in circuit board cleaning, paper industry, water-based acrylic paint

Method used

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  • Preparation method of non-silicon defoaming agent
  • Preparation method of non-silicon defoaming agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The method for preparing the non-silicon defoamer in the present invention is as follows: first, add 24 parts of white mineral oil, 3 parts of white carbon black, 25 parts of polyether, and 24 parts of castor oil into a reaction kettle equipped with a stirrer, a motor and a heating system, 24 parts of polypropylene glycol, mixed evenly, and discharged after stirring for an hour, to obtain ointment.

[0019] Take 80 parts of the prepared ointment, add self-emulsifying silicone oil, 20 parts of phosphate ester, 5 parts of emulsifier XP-50, SP-80, stir well, then add 280 parts of water to make phase inversion, and the phase inversion is complete Then add 16 parts of thickener AT-70 to thicken and adjust the viscosity to 1500CS~2000CS, and then discharge and pack.

[0020] The white mineral oil in the raw material has a viscosity of 5CS; the white carbon black has a specific surface area (BET method) of 200±25m 2 / g, fumed silica with an average primary particle size of 13...

Embodiment 2～4

[0022] Compared with Example 1, the production process of Examples 2-4 is the same and will not be repeated. The proportioning, reaction time and temperature of each component in each embodiment are shown in Table 1 below.

[0023] Table 1 Case 2-4 Material ratio of ointment

[0024]

[0025] Table 2 Material Proportion of Case 2-4

[0026] Example 2 Example 3 Example 4 ointment 80 80 80 Self Milking Silicone Oil 20 10 5 Phosphate 20 30 35 Emulsifier XP-50 5 5 5 Emulsifier SP-80 5 5 5 Thickener AT-70 16 16 16 water 280 280 280

[0027] Performance of non-silicon defoamers;

[0028] The product obtained in Example 1, the non-silicon defoamer, was tested according to the following standards, and the appearance was milky white and uniform liquid without mechanical impurities, and the physical and chemical properties were shown in Table 3;

[0029] Table 3 Physical and chemical properties

[0030] ...

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Abstract

The invention discloses a preparation method of a non-silicon defoaming agent. The method is characterized in that the method comprises the steps that: first, a factice is prepared, wherein materials are blended according to a weight ratio that white mineral oil to white carbon black to polyether to polyether polyol to castor oil is 10-25:2-5:15-25:10-20:10-25; the materials are added into a reaction vessel provided with stirring blades, a motor and a heating system, and are well mixed under a room temperature; discharging can be carried out after 1h of stirring; 80 parts of the prepared factice, 20 parts of self-emulsifying silicone oil, 20 parts of tributyl phosphate, and 10 parts of a mixed emulsifier are well mixed by stirring; 280 parts of water is added such that the mixture is subjected to phase inversion; after phase inversion is completed, 16 parts of a thickening agent is added for regulating the viscosity to 1500-2000CS; and discharging and packaging are carried out. The preparation method is simple, production cost is low, and produced product is environment-friendly and has no pollution. Various performance indicators of the product are good. The non-silicon defoaming agent is suitable to be used in defoaming and foaming-inhibiting of water-based acrylic paints.

Description

technical field [0001] The invention relates to the technical field of chemical engineering, and more specifically relates to a preparation method of a non-silicon defoamer. Background technique [0002] At present, organosilicon defoamers have the characteristics of rapid defoaming, long antifoaming time, safety and non-toxicity, etc., but they are insoluble in water, poor in strong alkali resistance, and prone to shrinkage and oil spots. , circuit board cleaning, paper industry, water-based acrylic paint, etc. cannot use silicone defoamers. Non-silicon polymer, excellent antifoaming, defoaming, defoaming effect, low shrinkage tendency, especially suitable for systems prone to shrinkage, water-based coating systems, etc.; but there are still existing non-silicon defoamer preparation methods The defoaming speed is slow, the chemical stability is not good enough, and the process is complicated. Contents of the invention [0003] The object of the present invention is to p...

Claims

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Application Information

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IPC IPC(8): B01D19/04
Inventor 曾伟文薛瑜军肖燕平许锋
Owner 佛山市华联有机硅有限公司
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