Plasticizer - an overview | ScienceDirect Topics
Plasticizers are used to convert PVC, a rigid plastic, into a soft, flexible, and elastic material. A plasticizer that is compatible with PVC and exhibits low volatility, good permanence, and high efficiency is referred to as a primary plasticizer. A secondary plasticizer has the opposite characteristics of a primary plasticizer.
Plasticizers: Types, Uses, Classification, Selection & Regulation
Still the world’s most widely used PVC plasticizer DINP, DIDP: High molecular weight ortho-phthalates Aliphatic dibasic acid Esters – These include chemicals such as glutarates, adipates, azelates and sebacates. They are made from aliphatic dibasic acids such as adipic acid and alcohols.
Antioxidants Stabilizers Selection for Polyolefins (PP, PE)
Processing Stability of PP Extrusion & Molding Grades The sterically hindered phenolic antioxidant AO1 (Pentaerythritol Tetrakis (3- (3,5-d-tert-butyl-4-hydroxyphenyl)propionate) is particularly effective for the melt processing of polypropylene.
Natural-based plasticizers and biopolymer films: A review
Besides, considering the plasticization efficiency and storage stability for chitosan films, GLY and PEG showed to be more suitable than EG and PG. Furthermore, a plasticizer concentration of 20% (w/w) with GLY or PEG was sufficient to obtain flexible chitosan film, exhibiting good stability for 5 months of storage.
Dimensional Stability After Molding: Part 1 | Plastics Technology
For thin-walled parts molded in amorphous materials, the wait time may be as little as 15 min and even parts with wall thickness of 0.125 to 0.140 in. will be stable in half an hour. Most molded parts are stable within an hour. But there are maddening exceptions. First, part size is important. Mold shrinkage is a percentage of the as-molded
- How do stabilizers protect plastic?
- Stabilizers protect plastic by absorbing or reflecting ultraviolet light, as well as by absorbing or neutralizing acidic substances. Common stabilizers include UV inhibitors, antioxidants, light stabilizers, and heat stabilizers. UV-resistant additives for plastics are a common type of plastic additive.
- What is a polymer stabilizer?
- Stabilizers Polymer stabilizers are chemical substances that prevent plastic from deteriorating, aging, or breaking during processing, use, and storage due to factors such as heat and light. Stabilizers protect plastic by absorbing or reflecting ultraviolet light, as well as by absorbing or neutralizing acidic substances.
- What are the different types of plastic stabilizers?
- Here are the key stabilizer categories and their significance in the plastic industry. Heat stabilizers are instrumental in safeguarding plastics from the harmful effects of heat exposure during processing and end-use applications. Common heat stabilizers include metal soaps, organotin compounds, and organic phosphites.
- What is a plasticizer chemistry?
- Plasticizers are the most used additives in the plastics industry. They are generally available as non-volatile, colorless liquids. They improve the properties of the polymer. With several plasticizer chemistries available in the market choosing the right one can be daunting. In this guide, you will read more about:
- How can plasticizers be used to make polymers soft and flexible?
- By adding plasticizers to compatible polymers, the materials can be modified in such a way that they become soft and flexible by decreasing their glass transition temperature. Plasticizers are classified according to their molecular structure into monomeric or polymeric types.
- What are plasticizers used for?
- Over the years, plasticizers have played a major role in the plastic industry as it is used as additives in polymers such as poly (vinyl chloride). Generally, unplasticized PVC has limited ap-plications like pipes, window profiles and siding. This is due to its hard and brittle nature caused by the presence of the Cl-Cl bond.
