A kind of microemulsion wood and bamboo antifungal agent, its preparation method and application

Abstract

The invention relates to a micro-emulsion-type wood and bamboo mould-proof agent, as well as a preparation method and application thereof. The micro-emulsion-type wood and bamboo mould-proof agent comprises the following components in parts by weight: 1 to 200 parts of isothiazolinone original medicaments, 1 to 1,000 parts of ester solvents, 1 to 500 parts of alcohol or ester cosolvents, 1 to 1,500 parts of polyoxyethylene non-ionic surfactants, 1 to 150 parts of succinate or polyoxyethylene ether salt non-ionic surfactants, 1 to 100 parts of long-chain carboxylic acid additives, and 1 to 1,000,000 parts of water. The micro-emulsion-type wood and bamboo mould-proof agent disclosed by the invention has the advantages that the chemical agents meet the requirements on environment friendliness and no toxicity; the preparation process is simple; the crystallization degree is low; the stability is high; the particle size is small; the permeability and the mould-proof performance are high; the volume expansibility of the processed bamboo and wood is reduced and the like; the micro-emulsion-type wood and bamboo mould-proof agent is stable, effective and environmentally-friendly, and is much better than that in the prior art.

Description

technical field [0001] The invention relates to the field of wood or bamboo antifungal agents, in particular to a microemulsion type wood and bamboo antifungal agent, as well as its preparation method and application. Background technique [0002] Wood and bamboo are natural renewable, recyclable, and degradable biomaterials with beautiful texture, high strength-to-weight ratio, excellent environmental characteristics and processability, and are loved by people, so they are widely used in production and life . However, untreated wood and bamboo wood is susceptible to mildew, discoloration and other defects caused by molds such as Trichoderma, Aspergillus, Penicillium and Mucor, which seriously reduces its use value. Moreover, the resistance of fungi to wood and bamboo protective agents is also higher than that of decay fungi, so the anti-mold of wood and bamboo and related products have important research significance and application value. [0003] At present, the commonl...

AI Technical Summary

Problems solved by technology

However, the existing water-borne wood protective agents have the following disadvantages: firstly, highly volatile and highly toxic substances are still used as the main organic solvents in the formula, such as toluene and xylene; secondly, most patents disclose only formula components There is no comprehensive evaluation on the stability of emulsion-type or microemulsion-type wood and bamboo protectants, and the performance and effect of treating wood and bamboo are not supported by experimental results, so it is difficult to popularize and apply

Chinese patent application CN1498535 discloses a method for preparing a stable water-insoluble isothiazolinone derivative microemulsion, but the microemulsion of this formula is used in papermaking, industrial water treatment, coatings, etc., and the focus is on the water treatment process Effectively strip off sludge, kill bacteria, fungi, algae, etc.; although the patent application lists the theoretically usable solvents and surfactants in the disclosed composition, it actually only provides a specific formula ( Its example 1), the specific bactericidal effect of this formula is also unknown (it only shows that it can be stored for a long time at 50°C and has low degradability)

Moreover, in the prior art, most of the microemulsion protective agents use cationic surface adsorbents, phosphate esters or disubstituted long-chain alkylamides to solve the problem of crystallization, but the effects are not very satisfactory.

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