A kind of anti-acid and alkali finishing agent and its preparation method and application

Abstract

The invention discloses an acid and alkali resisting finishing agent and the preparing method and application thereof. The finishing agent is prepared from, by weight concentration, 80-120 g / L waterproof and oilproof finishing agent, 30-60 g / L reinforcing agent, and 10-20 g / L film formation catalyst. The waterproof and oilproof finishing agent is prepared from perluorooctyl acrylate, octadecyl acrylate, hydroxymethyl acrylamide, vinylidene chloride, an emulgator, a cosolvent, an initiator and water. Oxidized polyethlene wax emulsion serves as the reinforcing agent. The film formation catalyst is prepared from isocyanate trimer, end methyl polyethylene glycol, a sealing agent, an organic solvent and water. The acid and alkali resisting finishing agent is high in film-forming property and compression strength, can not be wetted or permeated by acid liquid, alkali liquid and various chemical substances, can resist strong acid, strong alkali and strong oxidants and has the advantages of being breathable, comfortable, soft, portable, easy to wash and the like.

Description

technical field [0001] The invention belongs to the technical field of printing and dyeing auxiliaries, and in particular relates to an acid and alkali resistant finishing agent and its preparation method and application. Background technique [0002] Workers may cause burns caused by chemical substances such as strong acid, strong alkali, phosphorus and hydrofluoric acid when they are engaged in production, transportation, dumping, adjusting acid and alkali, repairing or cleaning chemical equipment, etc. Chemical protective clothing can effectively block harmful chemical substances such as inorganic acids and alkalis, so that they cannot come into contact with the skin, and can protect the personal safety of operators to the greatest extent. [0003] Traditional anti-acid and alkali work clothes are coated with a layer of impermeable rubber or plastic coating agent on the base fabric to prevent the penetration of acid and alkali. This acid-proof fabric is bulky, airtight, ...

AI Technical Summary

Problems solved by technology

This kind of acid-proof fabric is bulky, airtight, impervious to moisture, and the whole garment is bulky and inconvenient, and the comfort is extremely poor

Workers wearing acid and alkali-proof work clothes are already operating in a relatively harsh working environment. This kind of protective clothing with extremely poor comfort is obviously very detrimental to the health and work efficiency of the operator.

There are also breathable anti-acid and alkali clothing on the market, but due to poor protection performance, they can only be applied to occasions with low acid strength and discontinuous work, not suitable for continuous work under strong acid and strong alkali

[0004] Chinese patent application CN103694484A discloses a water-based fluorocarbon fabric three-proof finishing agent, which includes monomers (perfluoroacrylate, laurate acrylate, methylol acrylamide, etc.), initiators, softeners and crosslinking curing agents , the cross-linking curing agent is disclosed in the Chinese patent application CN103668957A by bishydroxyfluoroether (HO-R f -OH) reacted with diisocyanate monomer under the blocking agent, the finishing agent is water-resistant, oil-resistant, and washable, but its acid and alkali resistance is poor

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