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titanium dioxide crystal system
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High-Density Polyethylene (HDPE) is a type of thermoplastic polymer renowned for its high strength-to-density ratio, making it ideal for a variety of applications, from water bottles to piping. Nonetheless, HDPE in its pure form lacks the elasticity found in materials classified as elastomers, which are polymers with the ability to return to their original shape after being stretched or deformed. To incorporate elastomeric properties into HDPE, the material can be modified through blending with elastomeric components, or through copolymerization processes that introduce elastic segments into the polymer chain. These modifications can enhance the flexibility, impact resistance, and overall toughness of HDPE, expanding its application range to include areas where some degree of elasticity is beneficial, such as in flexible containers, durable bags, and impact-resistant goods. The specific properties of the resulting HDPE elastomer will depend on the type and amount of modification done to the original polymer.
China is a global hub for manufacturing, especially for injection molding machines, including those with a capacity of 1000 tons. Key suppliers in this segment include Haitian International, Chen Hsong Group, and Yizumi. Haitian International, headquartered in Ningbo, is known for its Mars Series, which is highly sought after for its energy efficiency and precision. Chen Hsong Group, based in Hong Kong, offers a range of robust machines under its Jetmaster Series. Yizumi, located in Guangdong, is another leading provider, known for its precision and innovation in injection molding technology. When sourcing a 1000ton injection molding machine from China, it's crucial to consider factors like machine quality, after-sales support, and the supplier's track record in the industry. Also, visiting the manufacturer or conducting a thorough remote assessment can ensure that the machine meets your specific production requirements.
The Degree of Polymerization (DP) refers to the number of repeating units in a polymer molecule. For polypropylene, you can calculate this by dividing the molecular weight of the polymer by the molecular weight of the repeating unit (propylene). Specifically, polypropylene's repeating unit is C3H6, which has a molecular weight of about 42 g/mol. Therefore, DP = Molecular Weight of Polypropylene / 42 g/mol. You'll need the specific molecular weight of the polypropylene sample, which can vary depending on its synthesis and processing conditions.
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