Common sense of choosing adhesives for interior de

2022-07-22
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In the process of building decoration, adhesives are mainly used for plate bonding, wall pretreatment, wallpaper bonding, ceramic wall and floor tiles, various floors, carpet laying and bonding, etc

common sense of choosing adhesives for interior decoration

choose high-quality adhesives during home decoration to eliminate home decoration pollution

I. classification of adhesives

adhesives are mainly used for plate bonding, wall pretreatment, wallpaper bonding, ceramic wall and floor tiles, various floors, carpet laying and bonding in the process of building decoration. There are many kinds of adhesives. At present, the adhesives with the largest consumption in the building decoration market mainly include white latex, water-soluble polyvinyl alcohol building adhesives (108 adhesives, 801 adhesives), rubber adhesives (neoprene adhesives, SBS adhesives, all-purpose adhesives), polyurethane adhesives (PU adhesives), etc. According to the different solvents and appearance forms, they are mainly divided into: water-based adhesives, solvent based adhesives, and other adhesives; Among them, water-based adhesives mainly include white latex and water-soluble polyvinyl alcohol building adhesives, and solvent-based adhesives mainly include rubber adhesives and polyurethane adhesives

adhesive is a kind of material that can form a film between the surfaces of two solid substances and bond closely. There are many kinds of adhesives, and there are many classification methods. The commonly used ones are:

1. According to the chemical composition, they can be divided into organic adhesives and inorganic adhesives. Organic adhesives are divided into synthetic adhesives and natural adhesives. Synthetic adhesives include resin type, rubber type, composite type, etc; Natural adhesives include animal, plant, mineral, natural rubber and other adhesives. Inorganic adhesives include phosphate, silicate, sulfate, borate, etc. according to their chemical components

2. Classification by form: it can be divided into liquid adhesives and solid adhesives. There are solution type, lotion type, paste, film, tape, powder, rubber particle, rubber stick, etc

3. Classification by use: it can be divided into structural adhesives, non structural adhesives and special adhesives (such as high temperature resistance, ultra-low temperature, conductivity, heat conduction, magnetic conductivity, sealing, water adhesion, etc.)

4. According to the application method, there are room temperature curing, thermosetting, hot melting, pressure-sensitive, rewetting and other adhesives

II. Precautions for choosing adhesives

1. Try to choose adhesives in building materials supermarkets with a certain scale. Generally, large building materials supermarkets have strict purchase system

2. Famous brand products of well-known enterprises should be selected. These enterprises have good quality management system and guaranteed quality

3. It is not suitable to choose commodities with rough outer packaging, skewed container shape, and blurred text printing such as instructions for use

4. Check the production date indicated on the outer package of the adhesive. The quality of the adhesive may decline after the storage period

5. If the barrel is opened for inspection, the colloid of the adhesive should be uniform, without stratification and sedimentation, and there is no pungent smell when the container is opened

6. Pay attention to whether the product use description is consistent with the selection requirements

III. according to the standard (GB18580 (80-88) - 2001), The limit requirements for harmful substances of relevant materials are:

interior wall coating standard:

harmful volatile VOC ≤ 200g/l

free formaldehyde ≤ 0.1g/kg

soluble lead ≤ 90mg/kg

soluble chromium ≤ 60mg/kg

soluble cadmium ≤ 75mg/kg

soluble mercury ≤ 60mg/kg

polyester paint standard:

harmful volatile VOC (bright) ≤ 600g/L

harmful volatile VOC (matte, semi dumb) ≤ 700g/L

benzene ≤ 0.5%

toluene + xylene ≤ 40%

Free TDL ≤ 0.7%

soluble lead ≤ 90mg/kg

soluble chromium ≤ 60mg/kg

soluble cadmium ≤ 75mg/kg

soluble mercury ≤ 60mg/kg. In addition, according to the national code for indoor environmental pollution control of civil construction engineering, the standard of indoor radon in new houses is < 100bq/m3, the old house is < 200bq/m3, formaldehyde ≤ 0.08mg/m3, benzene ≤ 0.09mg/m3, ammonia ≤ 0.2mg/m3, TVOC ≤ 0.5mg/m3, exceeding this limit will cause harm to human body

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