1、Polyvinyl Acetate
PVA, or polyvinyl acetate, is a colorless, odorless, and water-soluble synthetic polymer synthesized from the polymerization of vinyl acetate, which is later converted to polyvinyl alcohol. It is widely used as a thickener in various applications, including papermaking, packaging, and in the medical and pharmaceutical industries.
2、Uses and Toxicity of Poly (vinyl acetate)
Poly (vinyl acetate) is used as a gum chew and does not enter the human body and is non-toxic. It cannot be absorbed by the body as it is a polymer substance that is insoluble in water and oil.
3、Polyvinyl Acetate
Polyvinyl acetate includes all homopolymers and copolymers where the vinyl acetate content is at least 50%. About 80% of total consumption is used in wood, construction and paper adhesives, and architectural coatings.
Polyvinyl Acetate_化工百科
Polyvinyl Acetate - 简介 聚醋酸乙烯酯，也被称为聚乙烯酸乙酯，是一种聚合物材料。 性质： 1. 聚醋酸乙烯酯是无色至微黄色的固体，在常温下呈现为高透明度和玻璃状的外观。 2. 具有良好的耐化学性，耐溶剂性和耐热性。 3. 高度可塑，可用于制成各种 ...
Poly (Vinyl Acetate) Paints: A Literature Review of Material
This review paper presents the most relevant published information on poly (vinyl acetate) paint materials to help inform subsequent research and to provide information on the risks related to the surface cleaning treatment of poly (vinyl acetate) paint or poly (vinyl acetate)-painted works of art.
Polyvinyl acetate production methods and production process, what are
In this article, we will introduce in detail the production methods and production process of polyvinyl acetate, what are the commonly used raw materials, and understand the raw materials involved in the various manufacturing methods of polyvinyl acetate.
Polyvinyl Acetate (PVAc)
Explore the properties, production, applications, and safety aspects of Polyvinyl Acetate (PVAc), a widely used synthetic polymer.
Polyvinyl Acetate
Description Polyvinyl Acetate occurs as colorless to light yellow granules or glassy lumps. Identification Dissolve about 1 g of Polyvinyl Acetate in 5 ml of toluene, and proceed as directed under the Thin Film Method in Infrared Spectrophotometry.
(PDF) Poly(Vinyl Acetate) Paints: A Literature Review of Material
Since their development in the 1950s, poly (vinyl acetate) [PVAc] paints (also known as vinyl) have been used by many artists, most notably in countries such as Spain, Portugal, and the...
Application and toxicological study of polyvinyl acetate (PVAc) coating
The objective of the present study is to examine how different concentrations of polyvinyl acetate (PVAc) coating (2.5%, 5.0%, 7.5%, 10.0%, and 12.5%) affect the quality of lemons during storage at (27 ± 2)°C, with the aim of extending their shelf life.
Polyvinyl acetate (PVA) is a critical chemical material widely utilized across various industrial fields. Due to its unique physical and chemical properties, PVA finds extensive applications in coatings, adhesives, textile treatment, paper manufacturing, and agriculture.
Applications of Polyvinyl Acetate
1. Coatings and Adhesives
PVA serves as a primary raw material for manufacturing coatings and adhesives. Its excellent film-forming and adhesive properties enable durable and stable coatings. It is extensively used in industries such as automotive, furniture, construction, and packaging for coatings and tape products.
2. Textile Treatment
PVA plays a vital role in textile processing. It enhances fabric softness, waterproofing, and durability. Additionally, PVA is commonly employed in the production of printed patterns on textiles and papers, offering aesthetic appeal, longevity, and eco-friendly characteristics.
3. Paper Industry
In paper manufacturing, PVA acts as a reinforcing agent, significantly improving paper strength and water resistance. It is incorporated into pulp formulations to increase thickness and strength while maintaining flexibility and transparency.
4. Agricultural Applications
PVA is widely used in agriculture, particularly for seed coating and soil conditioning. As a seed coating material, it boosts germination rates and survival rates. PVA functions as a soil conditioner by improving soil structure, thereby enhancing crop yield and quality.
Usage and Dosage of Polyvinyl Acetate
Usage:
- Coatings and Adhesives: Dissolve PVA in water and mix with appropriate additives to formulate coatings or adhesives.
- Textile Treatment: Dissolve PVA in water, apply to textiles, and dry before further processing.
- Paper Industry: Dissolve PVA in water and combine with other chemicals to prepare pulp.
- Agricultural Applications: Dissolve PVA in water and blend with seeds or plant materials to create seed coats or soil conditioners.
Dosage:
- Coatings and Adhesives: Adjust PVA concentration based on performance requirements. Formulations are typically optimized through experimentation to achieve optimal results.
- Textile Treatment: Determine PVA dosage according to fabric type and purpose. Lower concentrations are often sufficient, but adequate levels must be maintained for desired performance.
- Paper Industry: Dosage depends on paper type and intended use. Higher PVA quantities are typically required to ensure sufficient strength and water resistance.
- Agricultural Applications: Adjust PVA dosage based on seed or plant material types. Lower concentrations are common, but sufficient levels are critical for effectiveness.
As a versatile material, PVA is indispensable across numerous industrial sectors. Understanding its usage and dosage is crucial for ensuring product quality and performance. By optimizing formulations and controlling dosages, the full potential of PVA can be leveraged to meet diverse industry needs.
