CN104858959A - Wood preservation flame retardant reinforcement modification production method - Google Patents

Abstract

The invention discloses a wood preservation flame retardant reinforcement modification production method, including five steps of wood pretreatment, wood modification agent preparation, wood modification liquid preparation, dipping treatment and post-drying treatment; and a wood modification agent comprises tetraethoxysilane (TEOS), polyethylene glycol (PEG), phosphoric acid, water, sodium octaborate, carbendazim, zinc borate, ammonium molybdate and sodium dodecyl benzene sulfonate. The beneficial effects are that th wood preservation flame retardant reinforcement modification production method has the advantages of simple treatment process, high efficiency, low cost, strong permeability, and the like, the tetraethoxysilane is used as a precursor for formation of titanium dioxide, the titanium dioxide has reinforcement, and toughening, synergistic flame retardant and other effects, and corrosion resistance, flame resistance, surface hardness, wear resistance, bending resistance, bend elastic modulus, processing good properties, dimension stability, and the like of the processed wood are greatly improved.

Description

The production method of the fire-retardant enhancing modification of a kind of wood preservation

Technical field

The present invention relates to wood producing technical field, the production method of the fire-retardant enhancing modification of specifically a kind of wood preservation.

Background technology

Timber as a kind of resource of natural reproducible, and has beautiful texture, color and luster is natural, texture is comfortable, plasticity is good, be easy to the advantages such as processing, thus by the ideal material as construction and decoration and Furniture manufacture.But timber is owing to contacting with oxygen, light, moisture for a long time, easy expand with wet and contract with dry, poor dimensional stability, and easy to change, cracking, wearing and tearing and dampen, also easily burning and easily by entomogenous fungi moth erosion etc.So, extensive concern is subject to for a long time to the modification of timber always.Tradition mainly contains heat treatment and chemical treatment two kinds to the method for modifying of timber.Heat treated mode safety non-toxic, but can make the component of timber that degraded in various degree and structure change occur, reduce the mechanical strength of timber, deepen the wood color of timber simultaneously, affect its aesthetic appearance of timber.Chemical treatment adopts the method for the treatment of agent, and its cost is low, technique simple, but the heavy metal ion such as copper, chromium, arsenic contained in most pharmaceutical agents and the compound such as chlorine, phenolic aldehyde have potential harm to environment and people and animals.Therefore, develop a kind of non-toxic and safe and have the wood producing method that antiseptic fire-retardation strengthens modification concurrently, will have important practical significance and promotion prospect.

Summary of the invention

The object of the present invention is to provide that a kind of technique is simple, process is efficient, the production method of the fire-retardant enhancing modification of wood preservation of environmental protection.

The technical solution adopted for the present invention to solve the technical problems is: the production method of the fire-retardant enhancing modification of a kind of wood preservation, comprises the following steps:

(1), timber pretreatment: removed the peel by log, cut after saw cuts open into the specification of required size, dry 8 ~ 24h under the condition of 50 DEG C ~ 80 DEG C, the moisture content controlling timber reaches 8% ~ 25%, then microwave treatment 10 ~ 30min;

(2), Wood modifier is prepared: add ethyl orthosilicate 20 ~ 30 mass parts, polyethylene glycol 50 ~ 80 mass parts, phosphatase 11 ~ 2 mass parts successively to reaction vessel, stir, then water 300 ~ 450 mass parts is added, add eight Boratex 10 ~ 15 mass parts, carbendazim 8 ~ 12 mass parts, Firebrake ZB 6 ~ 10 mass parts, ammonium molybdate 1 ~ 4 mass parts, neopelex 1 ~ 2 mass parts again, make to stir 20 ~ 40min together, after dispersed, Wood modifier namely obtained used;

(3), preparation Wooden modifying liquid: the Wood modifier that step (2) is obtained is diluted with water to the aaerosol solution that mass percent concentration is 15% ~ 30%, obtains required Wooden modifying liquid;

(4), impregnation process: the timber that step (1) obtains is put into airtight impregnation process tank, vacuumize and to make in tank vacuum at-0.08 ~-0.1MPa, keep 30 ~ 60min, Wooden modifying liquid step (3) prepared again injects impregnation process tank, and make to flood timber completely, then remove vacuum, in process tank, apply 0.6 ~ 1.5MPa air pressure, keep 1 ~ 4h;

(5), rear drying process: pressure relief, discharge remaining modification liquid, taking-up timber is washed, air-dry residual without obvious water mark to surface, move to dry kiln again to dry, baking temperature 90 DEG C ~ 115 DEG C, drying time 12 ~ 36h, then be cooled to room temperature, namely obtain the improved wood that moisture content is 5% ~ 15%.

The invention has the beneficial effects as follows, the present invention has the advantages such as treatment process is simple, efficient, cost is low, permeability is strong, and be that presoma forms silica and has the effects such as toughened and reinforced, synergistic is fire-retardant with ethyl orthosilicate, timber after treatment is all largely increased in anticorrosion, fire-retardant, case hardness, wearability, bending strength, Deflection Modulus of Elasticity, processing superperformance, dimensional stability etc.

Detailed description of the invention

Technical scheme of the present invention is further illustrated below in conjunction with concrete preferred embodiment.

A production method for the fire-retardant enhancing modification of wood preservation, comprises the following steps:

(1), timber pretreatment: removed the peel by log, cut after saw cuts open into the specification of required size, dry 8 ~ 24h under the condition of 50 DEG C ~ 80 DEG C, the moisture content controlling timber reaches 8% ~ 25%, then microwave treatment 10 ~ 30min;

(2), Wood modifier is prepared: add ethyl orthosilicate 20 ~ 30 mass parts, polyethylene glycol 50 ~ 80 mass parts, phosphatase 11 ~ 2 mass parts successively to reaction vessel, stir, then water 300 ~ 450 mass parts is added, add eight Boratex 10 ~ 15 mass parts, carbendazim 8 ~ 12 mass parts, Firebrake ZB 6 ~ 10 mass parts, ammonium molybdate 1 ~ 4 mass parts, neopelex 1 ~ 2 mass parts again, make to stir 20 ~ 40min together, after dispersed, Wood modifier namely obtained used;

(3), preparation Wooden modifying liquid: the Wood modifier that step (2) is obtained is diluted with water to the aaerosol solution that mass percent concentration is 15% ~ 30%, obtains required Wooden modifying liquid;

(4), impregnation process: the timber that step (1) obtains is put into airtight impregnation process tank, vacuumize and to make in tank vacuum at-0.08 ~-0.1MPa, keep 30 ~ 60min, Wooden modifying liquid step (3) prepared again injects impregnation process tank, and make to flood timber completely, then remove vacuum, in process tank, apply 0.6 ~ 1.5MPa air pressure, keep 1 ~ 4h;

(5), rear drying process: pressure relief, discharge remaining modification liquid, taking-up timber is washed, air-dry residual without obvious water mark to surface, move to dry kiln again to dry, baking temperature 90 DEG C ~ 115 DEG C, drying time 12 ~ 36h, then be cooled to room temperature, namely obtain the improved wood that moisture content is 5% ~ 15%.

Claims (1)

1. a production method for the fire-retardant enhancing modification of wood preservation, is characterized in that, comprise the following steps:

(1), timber pretreatment: removed the peel by log, cut after saw cuts open into the specification of required size, dry 8 ~ 24h under the condition of 50 DEG C ~ 80 DEG C, the moisture content controlling timber reaches 8% ~ 25%, then microwave treatment 10 ~ 30min;

(2), Wood modifier is prepared: add ethyl orthosilicate 20 ~ 30 mass parts, polyethylene glycol 50 ~ 80 mass parts, phosphatase 11 ~ 2 mass parts successively to reaction vessel, stir, then water 300 ~ 450 mass parts is added, add eight Boratex 10 ~ 15 mass parts, carbendazim 8 ~ 12 mass parts, Firebrake ZB 6 ~ 10 mass parts, ammonium molybdate 1 ~ 4 mass parts, neopelex 1 ~ 2 mass parts again, make to stir 20 ~ 40min together, after dispersed, Wood modifier namely obtained used;

(3), preparation Wooden modifying liquid: the Wood modifier that step (2) is obtained is diluted with water to the aaerosol solution that mass percent concentration is 15% ~ 30%, obtains required Wooden modifying liquid;

(4), impregnation process: the timber that step (1) obtains is put into airtight impregnation process tank, vacuumize and to make in tank vacuum at-0.08 ~-0.1MPa, keep 30 ~ 60min, Wooden modifying liquid step (3) prepared again injects impregnation process tank, and make to flood timber completely, then remove vacuum, in process tank, apply 0.6 ~ 1.5MPa air pressure, keep 1 ~ 4h;

(5), rear drying process: pressure relief, discharge remaining modification liquid, taking-up timber is washed, air-dry residual without obvious water mark to surface, move to dry kiln again to dry, baking temperature 90 DEG C ~ 115 DEG C, drying time 12 ~ 36h, then be cooled to room temperature, namely obtain the improved wood that moisture content is 5% ~ 15%.