Views: 200 Author: Site Editor Publish Time: 2023-03-27 Origin: Site
Gusiie’s Nitrile Gloves are mainly made by Acrylonitrile-butadiene rubber.
General description
Acrylonitrile-butadiene rubber is usually only referred to as nitrile rubber. Synthetic rubber is the co-polymer of acrylonitrile, the nitrile of acrylic acid (2-propenenitrile) and the doubly unsaturated hydrocarbon 1,3-butadiene, as shown in the following diagram, which does not take the steric conditions into account.
Processing and application
Nitrile rubber comes very close to natural rubber in terms of its technical properties and is, therefore, one of the essential surrogates for this natural product, which has long been unable to meet world demand.
The majority of the nitrile rubber produced worldwide is consumed by the automotive supply industry, primarily for pneumatic tires, oil and fuel lines and compressed air hoses, but also for dirt traps and sound-absorbing mats, sealing elements and corrosion-reducing coatings for metal surfaces. Another major customer for synthetic rubber is the shoe industry, where it is used as a basic material for laboratory and surgical gloves and for chemical-resistant textile finishes. Finally, nitrile rubber hoses are universally applicable in laboratories and technical plants as flexible media lines for liquids and gases. They are offered in many dimensions and technical designs.
Chemical formula NBR
The technical abbreviation NBR for this synthetic rubber is derived from the English name Nitrile Butadiene Rubber and should not be confused with the technical abbreviation NR, which stands for Natural Rubber.
The proportions of both monomeric components in the macromolecule, which are marked in the above diagram with the indices k for acrylonitrile and m for 1,3-butadiene, largely determine the technical properties of the synthetic rubber. The acrylonitrile content is usually between 18 and 51 mass %. By varying the proportions of the two starting monomers and by selecting the other synthesis parameters, mainly the polymerization temperature, the desired properties of the end product can be preset very precisely.
By mixing different types of NBR, blending NBR with other elastomers to form blends, such as polyvinyl chloride (PVC) or styrene-butadiene rubber (SBR), and incorporating fillers, its properties can be further modified and optimally adapted to the intended application.
Technical data
Due to the different compositions and structures of acrylic butadiene rubber (nitrile rubber), general technical data cannot be given. The values given here are based on parameters of different nitrile rubber qualities from Reichelt Chemietechnik. However, they are only rough guide values for orientation purposes; the actual values of a product may differ considerably from these values.
The proportions of both monomeric components in the macromolecule, which are marked in the above diagram with the indices k for acrylonitrile and m for 1,3-butadiene, largely determine the technical properties of the synthetic rubber. The acrylonitrile content is usually between 18 and 51 mass %. By varying the proportions of the two starting monomers and by selecting the other synthesis parameters, mainly the polymerization temperature, the desired properties of the end product can be preset very precisely.
By mixing different types of NBR, blending NBR with other elastomers to form blends, such as polyvinyl chloride (PVC) or styrene-butadiene rubber (SBR), and incorporating fillers, its properties can be further modified and optimally adapted to the intended application.
