At the same vulcanisation speed, general purpose rubber is fastest with natural rubber, followed by isoprene rubber, butadiene rubber, latex polybutadiene rubber and styrene butadiene rubber. Slow vulcanising rubbers using reduced sulphur and increased accelerators can be matched to natural rubber at the same vulcanising speed. In general, for the same vulcanisation speed, natural rubber is a high sulphur low accelerator, SBR is a low sulphur high accelerator and butadiene rubber is in between. The difference in vulcanisation speed of rubber is highly relevant to its molecular structure.
The different vulcanisation systems of natural rubber and chloroprene and butyl rubber are used together. Although the processing performance of the system can be improved, the performance of the vulcanised rubber obtained is below the average due to insufficient co-vulcanisation performance and satisfactory performance cannot be obtained. Co-vulcanisation with natural rubber can be improved by halogenating or increasing the unsaturation of butyl rubber. Suitable curing agents for natural rubber and neoprene are aldehydes, and the properties vary in a linear fashion. From the actual production, and with rubber co-vulcanization and dispersion inseparable.
The more uniform the dispersion between the materials of rubber fenders, the better the physical properties of vulcanisation, but most of the rubber is not uniformly dispersed, due to the different degrees of vulcanisation between the two phases, the interface between different rubber can cross-link, grafting and other factors, will have a decisive impact on the physical properties of vulcanised rubber. The reason for the deviation in the degree of vulcanisation between the two phases of the joint rubber is the solubility of the vulcanised rubber, which is added to the conventional formulation in greenhouse conditions in a dose close to the over-conserved or conserved state. In the vulcanisation temperature range, the degree of vulcanisation is not uniform between the two phases of the rubber due to the difference in solubility between the two phases, the uneven distribution of the vulcanising agent between the two phases, or the concentration difference.
How to improve the wear resistance of D-type rubber fender?December 16, 2024The method to improve the wear resistance of Type D rubber fender is as follows:a. Choose polyurethane rubber, natural rubber, butadiene rubber, styrene butadiene rubber, neoprene rubber, nitrile rubb...view
Diffusivity of vulcanising agents in rubber fendersDecember 16, 2024Rubber fenders in the vulcanising agent diffusion due to the solubility of rubber, so in and between the two phases of the system, the vulcanising agent diffusion occurs migration, at a certain temper...view
W-type rubber fender performance advantagesDecember 16, 2024W-type rubber fender application: usually fixed on the steel structure shock-proof board with bolts and nuts, there are exceptions, it is directly fixed on the cement wall of the wharf, shock-proof wo...view
How to measure rubber fender?December 16, 2024A rubber fender is a shock absorber installed on a quay to absorb the berthing energy of a ship to cushion the impact. In the the past, before rubber fenders that could effectively absorb mooring ener...view
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