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FAQ
- Excuse me, is PU one kind of silicone? Or what is the connection between the two?
- First of all, PU does not belong to silica gel, and PU refers to polyurethane. It is a kind of macromolecule material which is made up of organic diisocyanate or polyisocyanate and two hydroxyl or polyhydroxy compound. And silica gel is a common organic silica gel. The basic structure of organic silica gel is made up of silicon oxygen link, and the side chain is connected with other organic groups through silicon atom. So, these are two very different materials that make up the system. But because of the wide application of the two, they intersect in some application fields.
- Is work in rubber products harmful to health?
- The raw material of rubber products is rubber compound, and the rubber compound has five components:Main rubber. Rubber main glue is not toxic.Reinforcing agent. Most of the reinforcing agents are not toxic.Softener. Is the most emollient mineral oils, high temperature volatile hazardous substances.Antioxidant. Some poisonous.Vulcanizing agent. The vulcanizing agent is generally sulfur, sulfur will release a high temperature sulfur dioxide, sulfur dioxide, sulfur dioxide, hydrogen sulfide gas three.
- Are there formaldehyde in rubber products, too?
- Outstanding performance: headache, dizziness, fatigue, nausea, vomiting, chest tightness, eye pain, sore throat, poor appetite, palpitations, insomnia, weight loss, memory loss and autonomic nerve disorder; long-term inhalation of pregnant women may result in fetal deformity, even death, men's long-term inhalation can cause male sperm deformity and death.
- What are the forming methods of rubber products?
- In rubber products, the main molding technologies are molding, forming, transfer, forming, wrapping, molding and injection molding.
- What is the role of softening plasticizers in rubber? How are they classified?
- The plasticizer used in the production process should meet the following conditions: good plasticizing effect, low dosage, quick absorption, good compatibility with rubber, low volatility, no migration, cold resistance, water resistance, oil and solvent resistance, heat resistance, light resistance, good insulation, good flame resistance resistant bacteria, colorless, non-toxic, cheap and so on.But in fact, it is impossible to fully satisfy the above-mentioned conditions of plasticizers. Therefore, in actual use, more than two or more kinds of plasticizers mixed use, in order to make up for each other, where the amount of commonly known as the main plasticizer, and the other called auxiliary plasticizer.
- What is food grade natural rubber?
- Standard rubber, natural rubber latex concentrate only and solid and liquid substances is concentrated latex by high-speed centrifuge after processing, required special barrel plus fresh, dry rubber content is 60%; the standard is a standard solid rubber rubber good solidification, machining, drying, packaging, which according to the impurity content to several levels and it has international standards, countries also have the corresponding standard.
- What is the specific gravity of natural rubber?
- Natural rubber is elastic high polymer compound natural rubber tree cultivation, by cutting off the latex prepared by the steps of dilution, filtration, condensation, rolling and drying, commonly known as raw rubber or rubber. According to different preparation methods, there are wrinkle sheet gum, tobacco sheet glue and so on.
- What are the causes of cracks in vulcanized rubber products?
- The curing temperature is too high, pocket, self adhesive rubber products of poor liquidity
