CN102069517A - Long-acting wood preservative - Google Patents

Abstract

The invention provides a long-acting wood preservative. The preservative comprises the following components: copper sulfate, potassium dichromate, 25 percent ammonia water, methylene bisthiocyanate, dehydroacetic acid, kieselguhr, lignin and water. The long-acting wood preservative has the characteristics of long-term efficiency, uniform effect, no trace on the surface of wood, no influence on quality, low cost of raw materials and a process, and the like.

Description

Long-acting timber preservative

Technical field

The invention belongs to the wood preservation field, a kind of long-acting lasting timber preservative is provided.

Technical background

Timber is natural biologic material, is applied to various occasions such as structural material, civil engineering material etc., is the important source material that promotes economic development.Timber has tangible biological characteristics, thereby very easily be subjected to the harm of bacterium, insect and microorganism and cause variable color, rotten and damage by worms, have a strong impact on the use of timber, particularly outdoor serviceability, reduce the life-span, increase consumption, not only waste resource, also limited the application of timber, thereby bring enormous economic loss.Be directed to the preservation of timber against decay,, also should use anticorrisive agent with strong points with pollution and the infringement of control domestomycetes, insect and microorganism to timber except strengthening from the former administration of health of expecting product processing.About the development of timber preservative, many inventors provide solution.

Providing a kind of as Chinese patent " CN1413467 timber preservative " is solvent with nitrogen water, and with copper compound, the alkylammonium thing is the mixture that effective ingredient is formed, and has characteristics of high efficiency and low toxicity.Chinese patent " preparation method of CN1459466 chitin metal salt wood preservative and application thereof " provides the preparation method of a kind of shitosan, slaine and diluted acid timber preservative, has better chemical stability and resistance leachability.Chinese patent " CN1235515 mixes the timber preservative in the adhesive " the present invention relates to adopt adhesive or the mixture of compositions such as bonding agent and heteroaryl compound and Imidacloprid, the efficiently anti-ant worm of mildew-resistant that produces glued board and wooden material.

Above technology has all obtained certain progress at aspects such as improving effect, reduction pollution, but also exists not enough.Mainly show as: 1, the medicine tack is poor, easily loses with current, and anticorrosion short-term is effective, and chronic frustration is particularly under the high environment of bacterial content and not good to timber long term storage effectiveness in the rainwater; 2, medicament residue is big, especially under the big situation of consumption, easily wood surface is polluted, and influences timber outward appearance and quality; 3, raw material sources are narrow, and manufacturing process is loaded down with trivial details, the cost height.

Summary of the invention

Based on above understanding, the purpose of this invention is to provide a kind of long-acting timber preservative, this anticorrisive agent has long-term efficient, and even action leaves no trace at wood surface, does not influence quality, the characteristics that raw material and technology are with low cost.

For reaching above-mentioned purpose, for achieving the above object, the present invention is based on following technical scheme: 1, adopting copper sulphate, potassium bichromate, ammoniacal liquor, dithiocyano-methane and dehydroacetic acid is effective ingredient, and antiseptic effect is extremely strong, and effect is lasting; 2, adopt lignin and diatomite, significantly improve medicine degree of adhering to, make effective ingredient be difficult for running off, do not cause environmental pollution, lignin makes up sturdy frame, and effective ingredient is evenly discharged enduringly; 3, adopt common raw material, cheap, and manufacturing process is simple.

The mass fraction of each component is among the present invention:

Copper sulphate 0.2～0.6%

Potassium bichromate 0.15～0.4%

Ammoniacal liquor (25%) 2～8%

Dithiocyano-methane 0.15～0.3%

Dehydroacetic acid 0.10～0.45%

Diatomite 2～5%

Lignin 3～10%

Water 78～92%

The specific embodiment

Below be a kind of specific embodiment of the present invention, each constituent mass mark is

Copper sulphate 0.4%

Potassium bichromate 0.25%

Ammoniacal liquor (25%) 4%

Dithiocyano-methane 0.2%

Dehydroacetic acid 0.3%

Diatomite 5%

Lignin 8%

Water 81.85%

Compound method is: earlier copper sulphate, potassium bichromate, ammoniacal liquor, dithiocyano-methane, dehydroacetic acid are evenly mixed in 55 ℃, gains are evenly mixed in 65 ℃ with diatomite, lignin again, the back adds enough water and stirs, and is cooled to normal temperature promptly.

Claims (2)

1. a long-acting timber preservative is characterized in that, each component materials and mass fraction thereof are:

Copper sulphate 0.2～0.6%

Potassium bichromate 0.15～0.4%

Ammoniacal liquor (25%) 2～8%

Dithiocyano-methane 0.15～0.3%

Dehydroacetic acid 0.10～0.45%

Diatomite 2～5%

Lignin 3～10%

Water 78～92%

2. textile mould inhibitor as claimed in claim 1 is characterized in that, its component materials and mass fraction thereof are:

Copper sulphate 0.4%

Potassium bichromate 0.25%

Ammoniacal liquor (25%) 4%

Dithiocyano-methane 0.2%

Dehydroacetic acid 0.3%

Diatomite 5%

Lignin 8%

Water 81.85%