Q:What is the relationship between the hardness and tensile strength of rubber pad?

The molecular weight increases, increasing the fan Edward force, the chain segment is not easy to slip, the equivalent of molecules formed between physical crosslinking points with the molecular weight increased, the tensile strength increased to a certain extent reached equilibrium; the microstructure of the molecule, such as the effect of CIS and trans type structure; crystallization and orientation.

Q:Why should the tire be made of rubber?

Rubber not only has excellent wear resistance, long service life, but also has good elasticity. As a tire, it can absorb a lot of vibration energy, which is conducive to the smooth running of the car. So rubber will be used as a tyre for cars.

Q:How does rubber mobile phone cover change yellow?

Now there is no good solution to this phenomenon, rubber oxidation caused, it is recommended to replace the new mobile phone sets. Rubber products gradually appear, become yellow, harden and become brittle, with the increase of service time. This is an irreversible process.

Q:What are the hazards of waste rubber and how can they be used for regeneration?

The disposal of waste rubber is one of the serious problems facing people today. In order to meet the requirements of materials to improve the performance of rubber, towards high strength, wear resistance, stability and aging resistance of the direction of development, but also caused a long period of rubber not biodegradable waste after a large number of waste rubber, causing than plastic pollution (white pollution) more difficult to deal with the black pollution. On the other hand, precious rubber resources are wasted.

Q:Is rubber flame retardant?

Rubber itself is flammable, in the production process can be filled with some flame retardant material, it can reduce its flammability, but at the same time reduce its inherent good performance, such as abrasion resistance, elasticity, etc..

Q:What is food grade natural rubber?

Natural rubber obtained from natural rubber juice in a rubber tree and processed according to food safety requirements. It is used to process rubber products in contact with food products.

Q:The silica gel of the kettle is the white one that is waterproof and leaked out

Polybutadiene rubber (BR) is a cis structure by polymerization of butadiene rubber. The utility model has the advantages of good elasticity and wear resistance, good aging resistance, excellent low-temperature resistance, small heat generation under dynamic load and easy metal bonding. The disadvantage is low strength, poor tearing resistance, poor processability and self adhesion. Temperature range: about 60 + 100 DEG C. Usually used in combination with natural rubber or styrene butadiene rubber. It mainly produces tyres, tread, conveyor belts and special cold resistant products.

Q:Rubber products are not allowed to touch oil products, but why can rubber gloves be contacted daily? What's the point?

Contact every day is not every day inside the bubble, the contact time is short, the impact on rubber is very small.Raw rubber rubber products are: natural rubber, isoprene rubber, nitrile rubber, EPDM rubber, polybutadiene rubber, styrene butadiene rubber, polyurethane rubber, chloroprene rubber, silica gel etc.

Q:How are rubber wires processed?

Extrusion processExtrusion process is through extrusion machine, barrel, cylinder wall and screw member role, so that the plastic to achieve extrusion and preliminary shape purposes, extrusion process, also known as extrusion process.Extrusion process is the main equipment extruder.Extrusion characteristics of several rubber: natural rubber extrusion speed, shrinkage of semi-finished products is small. The body temperature 50-60, head of 70-80 C, 80-90 type C; styrene butadiene rubber extrusion speed, compression deformation, surface roughness, body temperature 50-70, the temperature of 70-80 DEG C, die temperature is 100-105 DEG C; chloroprene rubber extrusion without sufficient thermal refining, body temperature of 50 DEG C, nose, mouth and 70 DEG C; ethylene propylene rubber extrusion speed, small shrinkage, body temperature 60-70, the temperature of 80-130 DEG C, C type 90-140. Acrylonitrile butadiene rubber extrusion performance is poor, extrusion should be fully hot refining. The body temperature is 50-60 degrees, and the nose temperature is 70-80 degrees centigrade.

Q:What plastic rubber will not be subjected to oil (such as transformer oil) by quality (e.g., aging, dissolution)?

The most essential difference between plastics and rubber is plastic deformation when plastic deformation occurs, while rubber is an elastic deformation. In other words, it's not easy to restore the original state after plastic deformation, and rubber is relatively easy. Plastic elasticity is very small, usually less than 100, while rubber can reach 1000 or more. Most of the molding process of plastics is finished