1、POLY (VINYL ACETATE)

The degree of polymerization of polyvinyl acetate typically is 100 to 5000. The ester groups of the polyvinyl acetate are sensitive to base hydrolysis and will slowly convert PVAc into polyvinyl alcohol and acetic acid.

2、Melting Point of Polymers and Plastics

Explore a comprehensive table of melting point values for different polymers and plastics in both degrees Celsius and degrees Fahrenheit.

3、Polyvinyl acetate melting point

Many accelerators are available as dust free dispersions, preferably in an ethylene-propylene diene terpolymer / polyvinyl acetate blend. These have the dual advantage of zero loss as dust when the pellets are crashed as they are mixed, and rapid incorporation into the compound due to their low melting point.

4、Polyvinyl Acetate

PVAc is a solid that ranges in color from clear to light yellow. PVAc has a melting range of 30–50°C, with softening points ranging from 43°C to 41°C, depending on the molecular weight. PVAc has a refractive index of 1.4669 and 1.4665 at 20°C. It has specific gravities of 1.19, 1.177, and 1.18 at 15°C.

5、Basic Physical Properties of PVOH Resin

As for the PVOH samples used for the measurement, pyrolysis may occur before reaching the melting point of PVOH in the temperature rising process if impurities such as sodium acetate are mixed, and thus the accurate melting point may not be measured.

What is the melting point of polyvinyl acetate?

PVAc softens as its temperature is raised above room temperature, and it is less resistant to moisture and humidity than thermosetting resins. For this reason, PVAc adhesives are used in interior applications.

PVAc Polymer Mechanic

See a comprehensive list of electrical, mechanical, physical and thermal properties for PVAc (Polyvinyl Acetate) below: A detailed overview of the polymer PVAc (Polyvinyl Acetate), including applications & 50+ atomic, electrical, mechanical, physical & thermal properties.

Polyvinyl Acetate (PVA)

The following table provides a comprehensive list of polyvinyl acetate (PVA) properties in both SI and US customary/Imperial units at normal temperature and pressure (NTP). Click on the button to switch between Metric and Imperial units.

9003

9003-20-7 (POLY (VINYL ACETATE)) Product Description 9003-20-7 CAS No. 9003-20-7 Chemical Name: POLY (VINYL ACETATE)

Vinyl Acetate

The following table provides a comprehensive list of vinyl acetate properties in both SI and US customary/Imperial units at normal temperature and pressure (NTP).

Polyvinyl acetate (PVAc) is a high-molecular-weight material widely used in textiles, papermaking, and packaging industries. It is renowned for its excellent film-forming properties, adhesion, and transparency. the physical properties of this material, particularly its melting temperature, are critical for industrial production and practical applications. Understanding the melting characteristics of PVAc at different temperatures not only helps optimize manufacturing processes but also enhances product performance and quality.

1. Physical Properties of Polyvinyl Acetate

Polyvinyl acetate is a thermoplastic polymer whose molecular structure allows it to melt upon heating. This process typically involves volume expansion and viscosity reduction. Due to its unique chemical structure, PVAc has a relatively higher melting point compared to other thermoplastics, offering distinct research value for studying its melting behavior at specific temperatures.

2. Melting Temperature and Applications

The melting point of PVAc generally ranges from 150°C to 180°C, which determines its applicable temperature window in industrial settings. Within this range, PVAc exhibits good fluidity, making it suitable for manufacturing films, foams, adhesives, and other products. excessively high or low temperatures may degrade material properties, such as increased viscosity or reduced mechanical strength. precise control of melting temperature is crucial for ensuring product quality.

3. Impact of Temperature on the Melting Process

When heated to a molten state, the intermolecular forces within PVAc weaken, allowing molecular chains to move freely. This fluidity is essential for material processing and serves as a key indicator of complete melting. In practice, observing the transition from solid to liquid can provide preliminary insight into whether the material has reached an ideal molten state.

4. Experimental Methods and Data Analysis

To accurately determine the melting temperature of PVAc, researchers commonly use differential scanning calorimetry (DSC) to measure heat absorption or release peaks. Additionally, analyzing the heat of fusion at varying heating rates can further elucidate the material’s melting behavior.

5. Practical Considerations

While PVAc maintains adequate fluidity at lower temperatures, excessive heat may cause performance degradation. Thus, selecting appropriate processing temperatures based on specific applications and strictly controlling thermal conditions during production are vital for optimizing material properties.

6. Future Research Directions and Prospects

Advances in technology have led to the development of modified PVAc materials, such as those enhanced via blending or grafting techniques. These innovations improve mechanical properties and heat resistance. Future research will likely focus on adjusting polymerization processes and incorporating functional fillers to further enhance PVAc’s performance, meeting diverse market demands.

PVAc, as an important thermoplastic polymer, exhibits significant melting characteristics that directly impact its applications. By深入研究its physical properties and melting behavior, both production processes and新材料research can be optimized. With ongoing technological progress, PVAc is poised to play an even larger role in industrial applications.