Rubber Processing Additive Processing Additive technology is a science and art for the selection and use of materials. The general purpose of the Rubber Processing Additive formula is three: the first is to make the Rubber Processing Additive products with practical properties; followed by the existing processing equipment can be a good processing operations; Finally, the lowest possible cost of ingredients to meet customer requirements of the physical level. In other words, the design of the Rubber Processing Additive formula to consider the three elements for the ingredients of the physical properties, processing and cost, and make the three get an appropriate balance, that is, the formula design is the most important work.
Ingredients commonly used in recipes can be classified into ten main ingredients:
Rubber Processing Additive raw Rubber Processing Additive
Rubber Processing Additive formula design The first step is also the most important step is to choose Rubber Processing Additive substrate or raw material glue. Rubber Processing Additive is a kind of engineering material, regardless of its composition, with some common basic characteristics. All Rubber Processing Additive with elasticity, flexibility, toughness, easy to permeable and through the air and other properties. In addition to these common characteristics, each Rubber Processing Additive due to the composition of the different, each with its own nature.
The purpose of adding a vulcanizing agent is to cause the chemical reaction of the ingredients to produce a cross linking between the Rubber Processing Additive molecules and to change the physical properties of the Rubber Processing Additive. Chemical bridging makes the Rubber Processing Additive ingredients from the soft, hot plastic with a sticky body into a tough heat solid, this time by the impact of less temperature. So far, sulfur is still the most widely used sulfur fixation agent. Other sulfur donors such as TMTD (TUEX) of thiophanate disulfide are sometimes used as a formulation for all or a partially substituted elemental sulfur in a low sulfur or sulfur-free sulfur system to improve the heat resistance of the product. The second most important work of the recipe designer is the choice for the batching vulcanization system, the vulcanizing agent and the accelerator.
In the production and processing of plastic products to add a small amount of plasticizer. The plasticizer is usually a solid or liquid organic compound having a less volatile molecular weight.
Mainly for the lipid and ketones, commonly used with dioctyl phthalate, dioctyl phosphate, xylene resin, adipic acid, benzophenone and so on. For example, the addition of dibutyl phthalate to polyvinyl chloride resin makes the plastic soft and flexible, but studies have shown that,
It can be on the reproductive organs of experimental animals, blood, kidneys, lungs, liver and other organs damage, especially pregnant women and developmental children are very sensitive to its toxic effects.
For many Rubber Processing Additive extrusion products, the customer is acceptable, the surface appearance plays an important role. The following experimental ideas can improve the appearance of the extruded product. Note: These experimental ideas do not necessarily work in all cases. In order to improve the surface of the extruded products made changes may also improve other aspects of the performance, may also reduce other aspects of performance. Do not elaborate on the impact of other performance here.