January 10, 2022 Longchang Chemical

Making latex gloves by blending nitrile and PVC

1. The production process of PVC gloves: ingredients→standstill→vacuum degassing→primary dipping→primary plasticization→secondary dipping→secondary plasticization→baking→cooling→rolling lip→automatic demoulding→inspection→automatic packaging→ Product storage.

The main raw materials of PVC gloves: PVC powder, Plasticizer, viscosity reducer, zinc calcium stabilizer, polyurethane, pigment.

2. Production process of nitrile gloves: mold cleaning→brush cleaning→drying→soaking in hot water→dipping in coagulant→drying→primary dipping→primary drying→secondary dipping→secondary drying→soaking in hot water →Drying→Demoulding→Inspection→Packing and warehousing.

The main raw materials of nitrile gloves: nitrile latex, potassium hydroxide, liquid calcium carbonate, color paste, calcium nitrate, mold release machine, mold washing liquid, titanium dioxide.

 

Nitrile gloves and PVC gloves are two kinds of labor protection gloves that are not suitable for performance purposes. Both materials are nitrile rubber and PVC, both of which are rubber. However, after the two materials are mixed, the performance of the synthetic blend is better. Superior, with good oil resistance, high strength, abrasion resistance, aging resistance, easy forming and processing, etc. The performance of the made nitrile gloves (blended gloves) is more remarkable.

Nitrile is an organic compound, a colorless liquid with a pungent odor. Slightly soluble in water, soluble in ethanol or ether. It is a flammable liquid and is toxic. The ammonium soap made from butyric acid is then dehydrated. Used in organic synthesis.

Polyvinyl chloride, abbreviated as PVC (Polyvinyl chloride) in English, is a vinyl chloride monomer (VCM) in peroxides, azo compounds and other initiators; or under the action of light and heat according to the free radical polymerization reaction mechanism Polymers formed by polymerization. Vinyl chloride homopolymer and vinyl chloride copolymer are collectively referred to as vinyl chloride resin.

When blending two materials, the selection of nitrile rubber should be considered first. NBR with higher acrylonitrile content has better compatibility with PVC, but lower cold resistance. Considering compatibility and cold resistance comprehensively, nitrile rubber-26 can be used. PVC can choose ordinary suspension resin. In the production, the ratio of nitrile butadiene rubber to PVC is usually based on nitrile butadiene rubber, and the amount of PVC is generally less than that of nitrile butadiene rubber. This blending system uses PVC modified nitrile rubber, and the nitrile rubber needs to be vulcanized as usual.

The additives commonly used in rubber, such as reinforcing agents (carbon black, white carbon black), active agents (zinc oxide, magnesium oxide), antioxidants, etc., can all be used in NBR/PVC blends. In order to prevent PVC degradation, PVC heat stabilizers, such as barium stearate, cadmium stearate, and zinc stearate, should be added to the formula. Add an appropriate amount of plasticizer to the formula to plasticize PVC and soften NBR. Aluminum ceiling

The nitrile gloves made of nitrile as the main material, mixed with PVC, have the common advantages of nitrile and PVC. It is a new type of glove that needs market verification.

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