06

2024

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02

Five different dips

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1, natural rubber

Natural rubber is a kind of natural polymer compound with high elasticity collected from rubber trees and mainly composed of cis-1 and 4-polyisoprene. Usually referred to as natural rubber refers to the natural latex collected from the Brazilian rubber tree, after solidification, drying and other processing processes and made of elastic solid.

Its advantages are high cost performance, good physical properties, good anti-cutting performance and flexibility; The disadvantage is that the protection against fats and organic compounds is poor, there is a potential risk of allergy, easy decomposition and aging.

2, nitrile rubber

Nitrile butadiene rubber (NBR), a common chemical material, is a copolymer of acrylonitrile and butadiene monomer, which is mainly produced by low temperature emulsion polymerization.

Nitrile rubber has excellent oil resistance, good abrasion resistance, cutting resistance, puncture resistance, good flexibility and high cost performance; Its disadvantage is that it has poor low temperature resistance and poor protection against many ketones, aromatic chemicals and moderate polar compounds.

3. PVC

Polyvinyl chloride (PVC), referred to as PVC, is a polymer of vinyl chloride monomer (VCM) in peroxide, azo compounds and other initiators or under the action of light and heat polymerization of free radical polymerization reaction mechanism.

PVC has better physical properties and the lowest risk of allergies, but organic solvents easily wash away plasticizers in PVC, resulting in rapid penetration of chemicals.

4, PU polyurethane

PU Polyurethane is the abbreviation of polyurethane. PU products are polyurethane polyol and isocyanate plus various additives to adjust foam density, tensile force, wear resistance, elasticity and other indicators, and then fully stirred by PU machine and injected into the mold to expand the chain cross-chain reaction. It is a new synthetic material between plastic and rubber.

PU material has certain puncture resistance, anti-cutting, anti-tear function, good flexibility, cost-effective, but thin glue, wear resistance is relatively poor.

5. Neoprene

Neoprene rubber is a synthetic rubber produced by α-polymerization of chloroprene (2-chloro-1, 3-butadiene) as the main raw material.

Good protection, excellent resistance to oily substances, acids (nitric and sulfuric acid), bases, a wide range of solvents (such as phenol, aniline, ethylene glycol), ketones, refrigerants, cleaning agents, medium physical properties. However, the resistance to hooking, cutting, piercing and wear resistance of this material is not as good as that of nitrile rubber or natural rubber, and the price is higher.

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