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What's the difference between plastic and rubber?
Plastic has good insulation for electricity, heat and sound: electrical insulation, arc resistance, heat preservation, sound insulation, sound absorption, vibration absorption, noise elimination, and excellent performanceAnd rubberRubber (Rubber): highly elastic polymeric material with reversible deformation. It is elastic at room temperature and can produce great deformation under very little external force. It can be restored to original state after removing external force. Rubber is completely amorphous polymer, its glass transition temperature (T, g) is low, the molecular weight is often large, more than hundreds of thousands. ,Relatively direct, that is, plastic hard, rubber soft (not exactly, there are many exceptions, but most of them are)
How can rubber and mould not be bonded when producing rubber products?
When rubber products are made, rubber and mould can not be bonded:1, abrasives to be polished, coating treatment, to achieve the most smooth surface and high temperature corrosion resistance requirements!2, formula design, less use of sticky, easy to corrosive materials;3, curing process should meet the requirements of formula design!
Is there any poison in the processing and testing of rubber products? What about the salary?
There will be some flavor at the time of processing, as well as some fillers, oil will be a little toxic, and some crosslinking agents may be toxic. But now the mixer extruder is mostly closed, so it is common to pay attention to respiratory protection.A mechanical test is usually less toxic, and a glove is enough.If you do thermal testing, such as TGA, DMA, DSC and so on, it will degrade and release small molecules, especially if the aromatic oil is filled, be sure to pay attention to.
What is rubber made of?
High elastic polymer compound. It is divided into two kinds: natural rubber and synthetic rubber. Natural rubber is made from rubber, tree, rubber, grass and other plants. The synthetic rubber is obtained by polymerization of various monomers. Rubber products are widely used in industry or in all fields of life.
What is the difference between silicone rubber and silicone rubber?
The word language belongs to the chaos of the silica gel in above, there is no accurate way, and the types of silica can be divided into organic and inorganic silica gel, we in the life of common orthopedic medical cosmetic is divided into inorganic silica gel is a kind of amorphous chemicals into different pore structures which belongs to a liquid form of silica gel. It can be used in human tissue because it is non-toxic, no stimulation, no response to any material, has good stability, in addition to the medical industry in other industries can effectively use the strong adsorptive force so as beer silica gel, silica gel desiccant, viscose and so on
What about rubber molding, foaming and layering?
Foaming1 vulcanization is not sufficient, the temperature is too low or time is too short, so that the volatile compounds produced during curing have not been cleaned out;2, under the pressure of vulcanization, the trapped gas and sulfur volatile matter can not be discharged in time3, there is air or moisture in the glue;4, curing temperature is too high, the surface of the gum material premature vulcanization, hindered the glue material in the steam, air free precipitation5 vulcanization speed of material is too fast
What are the causes of fracture in rubber products?
Rubber products appear broken phenomenon, mainly for the following reasons:1, rubber products for a long time led to the phenomenon of fracture;2, too tired lead to rubber products broken;3, long-term exposure to ultraviolet light will cause rubber products broken;4, in the production of the use of chemical additives and materials conflict, resulting in incompatible and broken;5, the production process, the release of time is not appropriate, resulting in fracture (such as scratches);6, abrasive structure is irrational, lead to fracture;7, the use of materials is irrational, leading to fracture is also common;8, materials placed too long, in use, resulting in broken products, resulting in waste.
Can rubber products be injection molded and plastic injection functions?
Rubber is an elastic polymer. Rubber can be obtained from the plant sap, can also be man-made, both have many applications and products, such as tires, washers, etc., has become an important economic crop. The cultivation of rubber is mainly concentrated in Southeast Asia, such as Thailand, Malaysia and Indonesia.