Silver wire or tiny bubbles on surface of injection molded items.
Resin Text/Mitel only milan When plastic is perturbed by gas during filling process, silvery streaks or tiny bubbles often appear on surface of product, or bubbles form in thick wall of product. The source of these gases is mainly...
Research and development of Sun Tzu "The Art of War" materials: good people are good too, are you most brilliant person?
The main content of third chapter of Sun Tzu's The Art of War, "Conspiracy," is how to formulate campaign strategies and goals, which is a synergistic relationship with second chapter, "The Battle." The main content of second chap...
Summary of Methods for Preparation of Inorganic Nanopolymers
Nanopolymers refer to organic/inorganic nanocomposites in which inorganic fillers are dispersed in a nanometer-sized organic polymer matrix. Below we summarize methods for obtaining nanopolymers. 1. Intercalation compound method ...
Five thousand words of wisdom, emotion and truth
Original / Wisdom and Love Don't you dare be first to lead, but not to send, higher is good, lower is long. The three auspicious treasures appear freely, while Tao, on contrary, moves in a circle. 1. Definition of Taoism Chapter...
1.2 Basis of polymer casting process: physical and chemical changes during casting process
1.2.5 Physical and chemical changes during molding A. Physical changes in polymer during molding (a) Polymer crystallization (1) The concept of crystallization There are two main types of polymers: crystalline polymers and amorpho...
Analysis of TPV injection molding case: no material and flash (overflow, burr)
Text|Meite Polymer Nova Those who are a little familiar with injection molding should know that when there is not enough material in injection molding, it means that material is not filled and, as a rule, there will be no flash (o...
What is an N95 mask? What is GB2626 standard?
Text/Mite Polymer milan only Recently, as epidemic continues to intensify, there are fewer and fewer N95 masks. I bought several masks and found that they passed GB2626. So what is relationship between GB2626 and N95? 1. Introduc...
1.2 Fundamentals of polymer molding and processing: an introduction to polymer structure, processing characteristics and manufacturability.
Serialization of Practical Guide to Rubber and Plastics Technology 1.2 Fundamentals of Polymer Molding and Processing For professionals involved in polymer materials, it is necessary to understand basics of forming and processing ...
Method of polymerization of polypropylene (PP)
At present, polypropylene production process can be divided into five categories according to type of polymerization: solution method, suspension method, volumetric method and gas phase method, as well as combined process of volum...
Development of polyvinyl chloride (PVC) modification technology and implementation of polymerization method
3.1 Overview 3.1.1 Development of modification technology Since 1838, French physicist and chemist Henri Victor and German Eugen Baumann accidentally discovered vinyl chloride in 1872, research began on PVC, but due to its hardnes...