If the putty powder is not selected properly, even the best paint is useless
In wall construction, putty powder is an essential process and an important link. The construction process and quality of putty powder are related to the beauty of the wall and the service life. So what is putty powder? Let's take a look. .
Putty is generally composed of base material, filler, water and additives. Base material, also known as binder, is the most critical component of putty and mainly plays various functions such as bonding. The most commonly used binders for putty are cement and organic polymers, and organic polymers can be divided into emulsion and latex powder. Cement is a cohesive, durable and cost-effective binder, but has poor tensile strength and crack resistance. Organic polymers can modify and toughen it, thereby improving the performance of putty.
The filler mainly plays a filling role, and the commonly used ones are calcium carbonate, talcum powder and quartz sand. Attention should be paid to the matching use of filler fineness. Additives include thickeners, water retaining agents, etc. Thickeners and water-retaining agents play the role of water retention, improving storage and construction performance, and cellulose is generally used. Antifreeze is mainly to improve the storage stability of putty at low temperature. Slippery agent and water reducing agent are generally used in high-grade putty to improve the construction performance of putty.
Classification of putty powder
There are different ways to classify putty. Putty is divided into two types: interior wall and exterior wall. The putty on the exterior wall is resistant to wind and sun, so it has high gelatinity, high strength, and a slightly lower environmental index. The comprehensive index of putty in the inner wall is good, and it is healthy and environmentally friendly.
There are two types of putty: oily putty and water-based putty, which are used in the construction of paint and latex paint respectively. The putty we usually refer to refers to "water-based putty".
Putty is divided into two types: non-finished putty and finished putty
1) Non-finished putty refers to putty products without fixed packaging, uniform production standards, and no production means and quality assurance system. This type of product generally uses the user's room as a manual workshop, and the construction workers are also production workers. The amount and availability of various ingredients are all at the discretion of the construction workers.
2) The finished putty is produced according to a reasonable material ratio and mechanized method, which avoids the errors caused by the on-site ratio in the traditional process and the problems that the quality cannot be guaranteed. Relatively environmentally friendly, non-toxic and tasteless, formaldehyde, benzene, xylene and volatile harmful substances are controlled within the standard range, ready to use after mixing with water, easy to operate, and simple in process.
Putty is the same as paint construction, it is easy to cause various surface problems such as cracking, powder falling, air bubbles, etc. due to substandard material quality or improper construction. Everything is forewarned, so let us first understand some common quality problems of putty scraping, and take corresponding measures during construction to prevent these problems from appearing.View Details