Mold prevention solution for cement-based joint sealant: Solving the problem of mold growth in joints from the source of the formula
Adhesive sealant is the key material for filling the gaps after tile laying, directly affecting the overall decoration effect and service life. Cement-based adhesive sealant (filling agent) has advantages such as convenient construction, cost-effectiveness, and high bonding strength, and is one of the mainstream choices in the market. However, the porous structure and hygroscopic property of cement-based materials make them prone to mold growth in damp environments such as kitchens and bathrooms - black mold, spread of mold stains, and penetration of stains, which directly affect the appearance and hygiene, and this is also the most common after-sales pain point of adhesive sealant.
Adding a special anti-mold agent to the formula from the material source to give adhesive sealant a lasting anti-mold performance is a mature technical path for the industry to solve this pain point.
Dalian Tianwei has launched a special dry powder anti-mold solution for the cement-based adhesive sealant system, with broad-spectrum efficiency, alkali resistance, and system compatibility as the core advantages. It is adapted to the dry powder mixing production process to help upgrade the quality of adhesive sealant products.
01 Why does cement-based adhesive sealant need a special anti-mold agent
The causes of mold growth in cement-based adhesive sealant
Cement-based adhesive sealant faces multiple microbial threats in damp environments:
Porous structure absorbs moisture: Cement-based materials have a microporous structure, which easily adsorbs moisture in high-humidity environments such as kitchens and bathrooms, providing humidity conditions for mold growth. Experimental results show that ordinary cement-based filling agents can rapidly reproduce surface mold in a relative humidity of 85% or above.
Organic components provide nutrient sources: Organic additives such as cellulose ether and re-dispersible latex powder in the formula become carbon sources for mold reproduction in humid conditions.
Accumulation of surface dirt: The surface of adhesive sealant is often in contact with oil stains, water stains, and dust. If it lacks anti-mold function, dirt and mold will accumulate, causing the gap to turn black and be difficult to clean.
Consequences without anti-mold agent
Appearance deterioration: Black spots and mold stains appear in the gap, seriously affecting the overall decoration effect and living experience of the tiles
Cleaning difficulty: Mold stains penetrate the micro pores of the material, making surface cleaning ineffective and only able to be removed and redone
Health hazard: Mold spores released may affect indoor air quality and pose health risks to sensitive individuals
High after-sales complaint rate: Mold in adhesive sealant is one of the most common quality problems after decoration, directly affecting brand reputation and repeat purchase rate
Limitations of traditional solutions
The traditional cement-based filling agent formula of some manufacturers relies on adding borax and other additives to provide some anti-mold effect, or directly uses ordinary white cement and talcum powder components, with extremely limited anti-mold effect - prone to discoloration and yellowing due to mold growth. The patent technology indicates that by adding a special anti-mold powder and optimizing the formula, a good anti-mold effect can be achieved.
02 Core advantages of Dalian Tianwei products
Dalian Tianwei has launched a special dry powder anti-mold solution for the cement-based adhesive sealant system - with broad-spectrum efficiency, alkali resistance, and system compatibility as core advantages.
Broad-spectrum efficiency, anti-mold grade up to 0 level
Dalian Tianwei preservatives has obvious inhibitory effects on black aspergillus, yellow aspergillus, color-changing aspergillus, wood mold, mold, ball-shaped mold, green mold, golden staphylococcus, Bacillus subtilis, Candida albicans, white candida, etc. species of mold and bacteria. It is suitable for building mortar, putty powder, tile filling agent, adhesive sealant, gypsum board, etc., and can prevent mold growth in damp environments (basements, kitchens, food factory workshops, etc.).
The dry film anti-mold agent of Dalian Tianwei is also applicable to sealants, grout, etc., with broad-spectrum anti-mold effect, with no mold growth after 4 days of cultivation at a 0.5% dosage.
