The vulcanizing agent can make the rubber molecular chain react and make the linear molecules form a three-dimensional network structure. So what is the vulcanizing agent and what are its functions?

What is the vulcanizing agent

1. In natural rubber, the combination of vulcanizing agent and sulfur can prevent vulcanization from returning to the original, improve heat resistance, reduce heat generation and aging resistance, and improve the adhesive force between rubber and cord and the modulus of vulcanized rubber. It is mainly used in the shoulder rubber of tire, buffer layer and other rubber, which can solve the problem of shoulder space of bias truck tire, and also can be used for large-sized thick products of natural rubber and various rubber sundries.

2. Vulcanizing agents can be divided into two categories: inorganic and organic. Inorganic vulcanizing agents mainly include sulfur, sulfur monochloride, selenium and tellurium. Organic curing agents include accelerator TMTD, organic peroxides such as benzoyl peroxide, quinoxime compounds, etc. Rubber vulcanizing agents include elemental sulfur, selenium, tellurium, sulfur-containing compounds, peroxides, quinone compounds, amine compounds, resin compounds, metal oxides and isocyanates.

What are the functions of vulcanizing agent

1. All substances in the rubber that can accelerate the curing reaction speed, shorten the curing time, reduce the curing temperature, reduce the amount of curing agent, and improve or improve the physical and mechanical properties of the vulcanizate are collectively referred to as curing accelerators, or accelerators for short. The accelerator can also improve the vulcanization production efficiency and the quality of vulcanizate, make the vulcanization degree of thick products uniform, and reduce the product cost.

2. In the special rubber such as chloroprene rubber, chlorosulfonated polyethylene rubber, styrene butadiene rubber, nitrile rubber, isoprene rubber, butyl rubber, brominated butyl rubber, acrylate rubber, silicone rubber and rubber plastic composite rubber, as an auxiliary vulcanizing agent, it can significantly improve the correlation performance and improve the heat resistance. It is suitable for the high-temperature vulcanization system, and it can reduce the compression set obviously, and also reduce the amount of peroxide, Prevent scorching of the rubber during processing, and improve adhesive strength of the rubber with the cord and metal.

3. The anti scorching agent is a sulfur-free vulcanizing agent, mainly used for cable rubber. It can replace all sulfur-containing vulcanizing agents such as thiazoles and thiuram, and can solve the problem of copper wires and copper appliances being stained with copper sulfide due to contact with sulfur-containing vulcanizing agents.

Is the vulcanizing agent toxic

Sulfurizing agent is toxic and has a bitter taste. If the human body inhales too much sulfurizing agent, it will cause pneumoconiosis and cause great harm to the human body.