Kundu Chemical-Dry Mix Mortar Additives-Defoamer

Powder defoamer is a non-ionic surfactant suitable for dry mix mortar. Its hydrophilic group is non-ionic polar hydroxyl and ether groups, so it is not affected by the pH value of the medium and electrolyte, and has high stability.

In the building materials industry, mortar is often used for masonry,cement and lime are its cementing materials. According to different masonry projects & the choice of mortar strength, masonry mortar can be divided into three categories: cement mortar, lime mortar, and cement-lime mixed mortar. These mortars are prone to produce foam during use in construction due to unreasonable water consumption, aggregates and grading. People will also choose to add an appropriate amount of mortar defoamer to avoid the generation of foam that affects the firmness, plasticizing properties and flowability of the mortar.

1.The main components and functions of mortar defoamer 

I: The main ingredients: It is a powder defoamer of non-ionic surfactants for cement and gypsum based dry-mixed mortar.  

II: The roles: It is with character of easy dispersed, quickly anti-foamed, high stability, adaptability. Powder defoamer are able to defoam microbubbles in producing building materials and the mortar has excellent durability, shear stability and strength. In the high temperature alkaline defoaming environment, there will be no floating oil mixing, demulsification, suspension, etc. It is resistant to acid and alkali, high temperature and high shear force, and can play a good role at low concentrations, with good self-emulsification performance.

2. Types and uses of mortar defoamers

I. Types: According to different process requirements, mortar defoamers can be divided into cement mortar defoamers, gypsum mortar defoamers, oilfield cementing mortar defoamers, dry mix masonry mortar defoamers, powdered dry mortar defoamers, etc. After adding the defoamer, it will not affect the strength and appearance of the building and materials, and the product surface will not appear honeycomb coal-like.

II. Uses: Kundu Chemical mortar defoamer can be widely used in the production or use of cement mortar, concrete, putty powder and other building materials.

3. Usage and dosage:

I. Usage: Mortar defoamer can be directly added to the foaming system and needs to be stirred evenly before use.

II. Dosage: According to different process requirements, the amount of mortar defoamer added is between 0.1-1% of the total amount.

4. Precautions for using mortar defoamer

I. When to add the mortar defoamer: It can be added before the mortar produces foam, so as to achieve the effect of prior preventionand direct foam suppression; the mortar defoamer can be added autonomously and controlled, and then the foam can be eliminated when necessary to reduce waste; it can also be added intermittently,and you can choose to add the mortar defoamer once or add it regularly.

II. Storage in high temperature and humidity conditions will increase the risk of caking. Opened containers should be used as soon as possible, if not, should be resealed to prevent ingress of moisture from the air.