Application Charactoristics of PVAc-Ethyl Acetate system to produce white latex

Application charactoristcs of using polyvinyl acetate solid resin PVAC – ethyl acetate to produce white latex. Dissolve polyvinyl acetate solid resin (PVAC powder) into ethyl acetate to make the even liquid, then add some light stone powder into it to form pvac emulsion.

1. Preparation of high-performance adhesives

Application scenarios: woodworking glue, packaging glue, building sealantcile organic solvent to accelerate solvent evaporation and shorten curing time by 2.
Enhance filling properties: Lightweight stone powder (such as talc powder, calcium carbonate) is used as a filler to increase volume, reduce costs, and improve the thixotropy and anti settling properties of colloids.
Mechanical performance optimization: Polyvinyl acetate provides basic bonding strength, fillers reduce shrinkage stress, and improve the crack resistance of the adhesive layer.
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2. Development of special coatings
Application scenarios: fast drying primer, putty, anti-corrosion coating.
• Key functions:
Advantages of solvent based system: Compared with water-based latex paint, the ethyl acetate system is more resistant to humid environments and suitable for coating metal or high humidity substrates.
O Synergistic effect of fillers: Lightweight stone powder enhances the polishing performance and pore filling ability of coatings, and reduces the amount of expensive pigments such as titanium dioxide powder (as mentioned in the search for the role of calcium carbonate and talc powder in latex paint formulations).
Film formation control: By adjusting the resin concentration and filler ratio, matte or matte effects can be designed.
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3. Composite material modified base material
Application scenarios: Building putty, gypsum board joint agent, ceramic repair paste.
• Technical points:
Adjustment of rheological properties: Lightweight stone powder increases system viscosity, prevents construction sagging, and is suitable for vertical surface construction.
Cost effectiveness: The proportion of fillers can reach 30% -50%, significantly reducing raw material costs (refer to the contribution of fillers to costs in latex paint).
Stability guarantee: The solvent system avoids water sensitivity and is suitable for substrates that are prone to moisture deformation.
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Process precautions
1. Solvent selection: The purity of ethyl acetate should be strictly controlled to avoid impurities affecting resin dissolution or causing gelation.
2. Filler pretreatment: light stone powder shall be dried in advance to prevent the stability of lotion from dropping due to moisture.
3. Environmental Protection and Safety: Solvent based systems should pay attention to VOC emissions, and it is recommended to operate in a ventilated environment and match protective measures.