Solid defoaming agent and preparation method

Abstract

The invention provides a solid defoaming agent. The solid defoaming agent consists of the following components in percentage by weight: 50 to 90 percent of carrier, 5 to 20 percent of defoaming active matter, 0.5 to 4 percent of emulsifier, 1 to 30 percent of structural agent and 5 to 15 percent of water. A method for preparing the solid defoaming agent comprises the following steps of: (1) adding the defoaming active matter, the emulsifier and the structural agent into a mixer and fully mixing the components so as to obtain a mixture A; (2) adding an organic carrier into the mixture A and uniformly stirring so as to obtain a mixture B; (3) adding deionized water into the mixture B and uniformly stirring so as to obtain a mixture C; and (4) pelletizing the mixture C by using a pelletizer and drying the obtained particles by using a drier so as to obtain the solid defoaming agent. The solid defoaming agent has high defoaming and foam restraining performance and anti-damping performance, and can be applied to industries such as daily use chemicals, industrial cleaning and the like.

Description

technical field [0001] The invention relates to a solid defoamer, especially a solid defoamer obtained by agglomerating polysiloxane with solid powder. This type of solid defoamer can be used in daily chemical, industrial cleaning and other industries . Solid defoamer belongs to fine chemical additives, therefore, the present invention belongs to fine chemical technology field. technical background [0002] Foam is a common phenomenon in industrial processes such as daily chemical, industrial cleaning, sewage treatment, textile printing and dyeing, and different systems have different reasons for foaming. For example, in industrial cleaning, industrial cleaning agents are usually used to remove dirt. Since the cleaning agent contains a large amount of surfactant, during the agitation process, the surfactant will be adsorbed around the air bubbles to stabilize the air bubbles, causing a large number of air bubbles to gather It is not easy to eliminate. This situation is mor...

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Problems solved by technology

The solid defoamers on the market generally have the following problems: (1) poor foam suppression performance; (2) solid defoamers with sodium tripolyphosphate as the carrier have environmental pollution problems; (3) sodium sulfate as the carrier (4) The solid defoamer with zeolite and starch as the carrier is environmentally friendly and will not become damp, but there are still products with traditional structuring agents and processing methods It is easy to harden and prone to attenuation problems during storage

From the performance of starch, it is necessary to choose a suitable structurant to endow the product with good hardness and anti-foaming performance. If the structurant and processing method are not selected properly, there are still some products that are easy to harden and attenuate during storage. The problem

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