-
Categories
-
Pharmaceutical Intermediates
-
Active Pharmaceutical Ingredients
-
Food Additives
- Industrial Coatings
- Agrochemicals
- Dyes and Pigments
- Surfactant
- Flavors and Fragrances
- Chemical Reagents
- Catalyst and Auxiliary
- Natural Products
- Inorganic Chemistry
-
Organic Chemistry
-
Biochemical Engineering
- Analytical Chemistry
- Cosmetic Ingredient
-
Pharmaceutical Intermediates
Promotion
ECHEMI Mall
Wholesale
Weekly Price
Exhibition
News
-
Trade Service
Although adhesive is only a supporting material in building decoration, it does not mean that it is not important.
The actual decoration of a large number of materials (such as wallpapers, all kinds of flooring, ceramics, stone decorative materials, etc.) are laid by paste method, so the selection of adhesive is appropriate or not directly affect the degree of solidity of laying, but also affect the decorative effect of the finish.
to choose adhesives, we should first understand their basic technical properties, which are the basic conditions to ensure the degree of bonding
.
the technical properties of adhesives are:
(1) process
refers to the adhesive-related adhesive adhesive performance, there is adhesive modulation, coating, drying, curing conditions, etc. , but also the bonding operation is difficult to evaluate. As mentioned earlier, multi-group adhesives to be mated in the field, chemical reaction adhesives have curing reaction temperature conditions, solvent-based adhesives need to be dry after applying the glue for a period of time. between, until the solvent volatile can not bond and so on, these problems in the choice of the use of adhesive must be clear, in order to ensure the bonding effect.
(2) bonding strength
is a performance indicator to ensure the firmness of bonding. Bonding strength is not enough, will make the sticky off, if the wall decoration, the sticky will fall off, not only affect the quality of decoration, sometimes cause injury accidents.
(3) Stability
refers to the degree to which the strength of the bonding test piece changes after it has been impregnated at a specified medium for a certain period of time. Such as water resistance, oil resistance, etc. Commonly used measured strength or with strength hold rate. For the adhesive to bond the surface, exterior wall or bathroom, toilet and other places of the finish material, to have good stability.
(4) Durability (or Aging Resistance)
The properties of the
bonding layer age over time until the bonding strength is lost, a performance known as durability. Because now the largest amount of adhesive is synthetic resin or synthetic rubber-based organic polymer materials, in the process of use easy to age and become bad, so that the bonding layer is ineffective and fall off.
(5) temperature resistance
temperature resistance refers to changes in the performance of adhesives over a specified temperature range. These include heat resistance (under high temperature ambient conditions), cold resistance (under low temperature ambient conditions), and high and low temperature change resistance. These temperature changes can also change the composition of the adhesive, reducing the bonding strength until the adhesive layer falls off.
(6) weather resistance
for externally exposed adhesives, which are weather resistant to properties such as rain, sunlight, blizzards and moisture, known as weather resistance. Weather resistance also reflects the aging resistance of the bonding layer under the long-term effect of natural conditions. It is also because these natural factors can cause the bonding layer performance to go bad, affecting the bonding strength.
(7) Chemical resistance
Most synthetic resin adhesives and some natural resin adhesives, under the role of chemical media will be dissolved, expanded, aging or corrosion and other different changes, resulting in a decrease in bonding strength.
(8) Other properties
In addition to the above described performance (i.e., a variety of environmental conditions, such as temperature, humidity, sunlight, chemical media, etc. on the adhesive bonding strength of the adhesive, a comprehensive reflection of the use of the bonding layer Effect) In the selection of adhesive must be considered, should also consider other properties of adhesive, such as: whether there is a irritating odor, toxicity, adhesive color, storage stability, storage period and price and so on.
.