The Technical Specifications of PVC Resin SG5 K67: A Deep Dive for Manufacturers
For manufacturers working with industrial polymers, a thorough understanding of technical specifications is non-negotiable. PVC Resin SG5 K67, a widely utilized grade of polyvinyl chloride, boasts a set of critical parameters that dictate its performance in various applications, from pipes and cables to footwear. This article provides a detailed look at the technical specifications of PVC Resin SG5 K67, offering insights for manufacturers to optimize its application and ensure product excellence.
At the forefront of PVC resin classification is the K-value, a measure of the average molecular weight or degree of polymerization. For PVC Resin SG5, the K-value typically falls within the range of 66-68. This specific K-value signifies a moderate molecular weight, which translates into a beneficial balance of properties. It provides sufficient rigidity and strength for applications like pipes and profiles, while still maintaining good processability, making it suitable for extrusion and molding processes.
Another key parameter is the viscosity number, often expressed in ml/g. For SG5 grade PVC resin, the viscosity number typically ranges from 118 to 107 ml/g. This measurement is directly correlated with the molecular weight and provides an indication of the resin's behavior in solution or melt state. A consistent viscosity number is essential for predictable processing and achieving uniform product characteristics.
The appearance of PVC Resin SG5 K67 is consistently described as a white powder. This physical characteristic is standard for suspension-grade PVC resins and indicates the material's purity and homogeneity. The fine powder form allows for efficient mixing with various additives, such as plasticizers, stabilizers, and fillers, which are crucial for tailoring the final properties of the PVC compound.
Beyond these primary metrics, other technical specifications are equally important for manufacturers. These include:
* Volatile Matter: Typically less than 0.4%, this indicates the low moisture content, which is important for preventing processing issues and ensuring product quality.
* Apparent Density: Usually above 0.48 g/ml, this property affects handling and storage, as well as the volume of material processed.
* Impurity Particles: A low number of impurity particles (often ≤ 20) ensures a cleaner final product and prevents defects.
* Plasticizer Absorption: The amount of plasticizer the resin can absorb (e.g., 19 g per 100g of resin for SG5) is critical for formulating flexible PVC products.
* Whiteness: Measured after heating (e.g., ≥ 75% at 160°C for 10 min), this indicates the thermal stability and color of the resin.
Manufacturers utilizing PVC Resin SG5 K67 for applications like pipes, cables, or footwear must pay close attention to these specifications. For instance, in pipe manufacturing, the combination of K-value and viscosity influences the extrusion behavior and the mechanical strength of the finished pipe. For cable insulation, thermal stability and low volatile matter are paramount for safety and performance.
When sourcing PVC Resin SG5 K67, consulting detailed technical data sheets provided by suppliers is highly recommended. Understanding these specifications enables manufacturers to select the most appropriate grade, optimize processing parameters, and ultimately produce high-quality products that meet market demands. Partnering with reputable PVC resin manufacturers in China ensures access to materials that consistently meet these rigorous technical requirements.
At the forefront of PVC resin classification is the K-value, a measure of the average molecular weight or degree of polymerization. For PVC Resin SG5, the K-value typically falls within the range of 66-68. This specific K-value signifies a moderate molecular weight, which translates into a beneficial balance of properties. It provides sufficient rigidity and strength for applications like pipes and profiles, while still maintaining good processability, making it suitable for extrusion and molding processes.
Another key parameter is the viscosity number, often expressed in ml/g. For SG5 grade PVC resin, the viscosity number typically ranges from 118 to 107 ml/g. This measurement is directly correlated with the molecular weight and provides an indication of the resin's behavior in solution or melt state. A consistent viscosity number is essential for predictable processing and achieving uniform product characteristics.
The appearance of PVC Resin SG5 K67 is consistently described as a white powder. This physical characteristic is standard for suspension-grade PVC resins and indicates the material's purity and homogeneity. The fine powder form allows for efficient mixing with various additives, such as plasticizers, stabilizers, and fillers, which are crucial for tailoring the final properties of the PVC compound.
Beyond these primary metrics, other technical specifications are equally important for manufacturers. These include:
* Volatile Matter: Typically less than 0.4%, this indicates the low moisture content, which is important for preventing processing issues and ensuring product quality.
* Apparent Density: Usually above 0.48 g/ml, this property affects handling and storage, as well as the volume of material processed.
* Impurity Particles: A low number of impurity particles (often ≤ 20) ensures a cleaner final product and prevents defects.
* Plasticizer Absorption: The amount of plasticizer the resin can absorb (e.g., 19 g per 100g of resin for SG5) is critical for formulating flexible PVC products.
* Whiteness: Measured after heating (e.g., ≥ 75% at 160°C for 10 min), this indicates the thermal stability and color of the resin.
Manufacturers utilizing PVC Resin SG5 K67 for applications like pipes, cables, or footwear must pay close attention to these specifications. For instance, in pipe manufacturing, the combination of K-value and viscosity influences the extrusion behavior and the mechanical strength of the finished pipe. For cable insulation, thermal stability and low volatile matter are paramount for safety and performance.
When sourcing PVC Resin SG5 K67, consulting detailed technical data sheets provided by suppliers is highly recommended. Understanding these specifications enables manufacturers to select the most appropriate grade, optimize processing parameters, and ultimately produce high-quality products that meet market demands. Partnering with reputable PVC resin manufacturers in China ensures access to materials that consistently meet these rigorous technical requirements.
Perspectives & Insights
Molecule Vision 7
“It provides sufficient rigidity and strength for applications like pipes and profiles, while still maintaining good processability, making it suitable for extrusion and molding processes.”
Alpha Origin 24
“For SG5 grade PVC resin, the viscosity number typically ranges from 118 to 107 ml/g.”
Future Analyst X
“This measurement is directly correlated with the molecular weight and provides an indication of the resin's behavior in solution or melt state.”