What does a rubber vulcanizing agent do and how much do you know about it?
At first glance, vulcanizing agents appear to be chemicals used in our industrial production or in certain specific situations, but we should never underestimate the role and use of our vulcanizing agents. It has been playing a great role and efficacy in our industrial production process, which can change the chemical structure of many chemical components and produce different chemical changes. In addition, rubber vulcanizing agent not only plays a great role in industrial production, but also has many uses in the production of many chemical components in daily life. So today I will give you a closer look at the use of vulcanizing agents.
The use of rubber vulcanizing agent
In natural rubber, combined with sulfur can prevent the return of vulcanization, improve heat resistance, reduce heat generation, aging resistance, improve the adhesion of rubber and cord and the modulus of vulcanized rubber. It can be used for the shoulder rubber of loaded tires, cushion ply and other rubbers, which can solve the problem of shoulder gap of slanted loaded tires, and can also be used for large thick products of natural rubber and various rubber miscellaneous products.
For example, when used in combination with sulfur, accelerator MPMCZ, or TMTD as an initiator, vulcanized diene rubber (natural rubber, styrene-butadiene rubber, butadiene-acrylated rubber, synthetic isoprene rubber) has extended coking time, reduced calorific value, high tensile strength, and excellent resistance to regeneration. At the same time can also increase the H extraction, suitable for high-temperature vulcanization of rubber (183), the dosage of 2-3. As a vulcanization accelerator for neoprene rubber, can significantly improve the anti-scorch performance of the rubber mixing, suitable for the southern high-temperature season processing neoprene rubber.
1.Auxiliary vulcanizing agent
As an auxiliary vulcanizing agent for peroxide vulcanization of various rubbers, especially in the process of peroxide vulcanization of NBR, ethylene-propylene rubber and rubber blends, it can be used as a rubber with small compression deformation, fast vulcanization speed and heat-air aging resistance.
For example, in NBR, when the dosage is 1.5phr, the compression deformation is only 3-8%, which is unattainable by other vulcanization aids. As an auxiliary vulcanizing agent, rubber vulcanizing agent can significantly improve the relevant performance and heat resistance, suitable for high temperature vulcanization system. It can significantly reduce the compression deformation, reduce the amount of peroxide, prevent the rubber from scorching during processing, and improve the rubber, cord and cord.
When used in chlorosulfonated polyethylene rubber, it can be used as anti-scorch agent together with magnesium oxide and bis(pentamethylene)thiuram tetrasulfide(TRA).
3.Improvement of compression deformation
With calcium hydroxide to form a maleimide curing system, the amount of 2-4phr, can greatly reduce compression deformation, improve temperature resistance.
4.Improve bonding strength
Improve the adhesive strength between rubber and polyamide fabric, rubber and metal, applicable to direct bonding system.
Environmental protection. Avoid workshop dust pollution, protect workers' health.
Rubber additives are chemicals that bring high added value to rubber products and can reduce costs. However, the traditional rubber additives not only produce a lot of dust and toxic and harmful gases when used,
A rubber vulcanizing agent is a substance that induces a vulcanizing reaction in rubber. Vulcanization is the process by which rubber undergoes a chemical reaction to form a cross-linked structure, increasing elasticity and wear resistance. In industrial production, rubber vulcanizing agent is widely used in automobile tires, rubber hoses, flooring, cables and other fields.
Rubber vulcanizing agent manufacturers tell you that the activation temperature is low, the curing speed is fast, and the crosslinking degree is high. However, it is easy to burn, poor flatness, improper vulcanization operation, easy to cause insufficient sulfur or too much sulfur. It is suitable for fast vulcanizing thin products of butyl rubber and EPDM rubber, room temperature vulcanizing products, latex products and vulcanizing products.
Rubber vulcanizing agent is a substance that enables natural rubber and synthetic rubber to cross-link at high temperatures, thus improving rubber properties. Rubber vulcanizing agent has the following advantages:
At first glance, vulcanizing agents appear to be chemicals used in our industrial production or in certain specific situations, but we should never underestimate the role and use of our vulcanizing agents.