CN102267149A - Chemical modifier for improving property of wood (bamboo) material - Google Patents

Abstract

The invention provides a chemical modifier for improving the property of a wood (bamboo) material, which is applied to the field of wood (bamboo) material modification and is a new invention obtained by an inventor after ten years of researches and improvements on the basis of the original confidential patent. A novel drug which is a new generation chemical modifier integrated with preservative, fire retardant and dimension stabilizer has the advantages of largely enhanced seepage force, wider application range and simpler, more convenient and more environment friendly process; good dimension stability and corrosion resistance of an old drug are kept and the fire retardant property is also improved. Compared with the old drug, the novel drug is applicable to red woods and bamboo materials with ratio of more than 1 while the old drug is only applicable to a small number of fast growing woods; the novel drug only needs normal temperature treatment while the old drug needs high temperature curing; the novel drug can also be dried by solar energy to realize environment friendliness; the novel drug obtains a flat board surface while the old drug obtains an uneven wood surface due to weak seepage force of the drug so that the wood utilization rate is largely increased (the volume is generally increased by about 5%; and the novel drug obtains clearer wood grains and more beautiful surface while the old drug obtains darkened wood due to high temperature curing.

Description

A kind of chemical modifier that improves wood (bamboo) material property

One, technical field:

Timber has very consequence in national economy, people's lives be unable to do without timber, but in use also there is some everybody shortcoming of knowing in timber itself: expand with wet and contract with dry, strain cracking is met fire burns, and is rotten easily.This invention is exactly the problem that solves this field.

Two, background technology:

For solving these shortcomings, timber preservative, wood fire retardant, dimensionally stable agent have solved the many problems in production, the life really.But these medicaments are imperfection also.As: anticorrisive agent is poisonous, even wood color is changed, and becomes not attractive in appearance; Most medicament penetrations are not strong, can not soak into timber; Some processing also needs pyroprocess, and timber is become fragile.For solving Wood Dimensional Stability; since last century the '30s; developed countries such as the U.S. are very abundant in the research aspect theoretical; find timber and just have good anti-corrosive properties as long as handle the timber of (promptly replacing the moisture in the cell membrane to make timber be in swelling state) with chemicals through inflation; and work out the method for various stable timber sizes; as: handle timber, handle with thermosetting resin with polyethylene glycol (PEG); wood acetylation or the like; but all because of some shortcoming of self, use face is restricted these methods." carbonization wood " heat that China rises is in recent years used high-temperature process timber, but timber deepening embrittlement may also be difficult to promote.Present technique inventor is in the method for the nineties invention and acquisition secret patent (ZL92109429.9), product is used for the Beijing Great Hall of the People, truly have good dimensional stability, but also because of the poor permeability of medicine to timber, medicine needs the shortcoming of hot setting, cause applicable surface narrow, had a strong impact on promoting the use of of technology.At present; the a lot of timber products of China are output big country in the world but are not to make power; as: annual national floorboards of wood output just reached 3.6 hundred million square meters in 2009; numeral is very surprising; and the timber window; wood furniture; product yields such as wooden glued board are more surprising; but meanwhile; China's wood industry lacks famous brand name; as solid wooden floor board, one to carry be exactly Germany, and national timber circulation association advises that we do not sell foreign country this technology; to this technology make national famous brand by us; and wish that we hold in close confidence, offer high prices for medicament in the future, with protection domestic enterprise.If this technology can be widely used in wood industry, can not only significantly increase the timber products quality, significantly increase the timber products surcharge, significantly increase timber products service life, and can also save a large amount of timber for country, simultaneously, can also reduce greenhouse gas emission in a large number, promote the realization of China's target for energy-saving and emission-reduction effectively.

Three, summary of the invention:

" a kind of chemical modifier that improves wood (bamboo) material property ", trade name " strong wood is precious " Wood modifier, maximum characteristics are that the medicament penetration is very strong, the family expenses pithos is water-tight, but medicament can infiltrate from casing wall, proportion is greater than the redwood of " 1 ", and bamboo wood also can use this medicament to handle; Next is to use this chemicals treatment, technology is very easy, timber is after the aqueous solution impregnation process of medicament, no longer need high-temperature process, dry and to use with the sun, then can adopt the solar heat pump dry technology that timber is carried out drying in factory, accomplish, realize the low-carbon economy function mode without steam, without fuel.Timber after the modification is clean mark not only, and the plate face is attractive in appearance, has good dimensional stability, fire-retardant, corrosion-resistant effect simultaneously, makes this modifier become the medicament of reliable size stabilizing agent worthy of the name, outstanding fire retardant, three doses of unifications of non-toxic anticorrosion agent.Because " strong wood precious " Wooden modifying agent molecule has good inflation effect to timber, to handle the back volume and generally increase, wood shrinkage rate generally commonly used is many reduces to below 5% from 10%, has also improved timber utilization rate greatly.(minority seeds volume can increase about 15%, some breathing values itself is arranged certainly with regard to little timber, and volume can only increase 1-2%)

Certainly, we also want acutely aware, and timber variety is various, and are extremely complicated, always also can run into some special cases.As: the timber distortion that has is owing to inner remaining growth stress in the arboreal growth process causes; Some timber such as pine contain a large amount of turpentine oil, need carry out drying to the timber that flooded medicine under hot and humid condition, and grease is excluded; And some timber itself just has good dimensional stability, be soaked in the water not absorb water substantially, as: " Chinese yew ", " East Africa rosewood " proportion is greater than " 1 ", soaks in the water 30 days, and water absorption rate has only 1%, and size is constant substantially, need not to handle.We will specifically treat in processing as the case may be in a word.

Our invention is carried out on original invention basis, so the present invention is improvement, the upgrading of former invention.The inventor puts into practice by years of researches, discovery adds some material in original formulation after, not but still the effect that can keep performance inflation wood cell wall stable dimensions, but also improved the penetration of medicament greatly to timber, make the timber Chinese traditional medicine permeate more evenly, can not infiltrate the timber of poplar limit heartwood intersection as original prescription, timber fails to obtain inflation herein, deep groove appears in wood surface after causing hot setting, cause timber utilization rate to descend, and after adding these materials, groove no longer occurs.The medicine solidifying and setting also no longer needs high temperature after adding these materials, can form highly stable state in the air drying condition, can not ooze out from timber.And because the adding of these materials, also make the fire-retarding of wood desired difficult combustion grade B1 level (can only not reach the B2 level before adding) that can be up to state standards.The adding of these materials makes this technology qualitative leap occur, and this narrates in the above.Actually these materials what are, preparation technique and principle thereof, we will deliver the personnel of inquirying on the protection of secrets of Patent Office and accept examination after receiving Patent Office's examination as to substances notice.

Four, the specific embodiment:

Below, the process control condition of narration " strong wood precious " Wood modifier improved wood respectively, and the performance test results of timber after the modification.

(1) process control condition of modifier modification timber.

Production technology was divided into for two steps, at first, used the soup impregnated timber, and the timber that will absorb medicament then carries out drying.

1, with medicament dipping timber

Elder generation is soluble in water with modifier, is configured to the solution of debita spissitudo, then impregnated timber under normal pressure or high pressure.

1. normal pressure technology

Timber variety is various, and density, material are different, and the quantity of their absorbent solution is different, and the concentration of the modifier solution that dispose depends on the degree of absorption of timber.The uptake of Wood modifier is controlled at 10-20% and can meets the demands.Proportion gets final product about 5% greater than 1 timber absorption pharmaceutical quantities.

2. high-pressure process

In the high-pressure impregnation jar, flood.At first take out the air in the timber, then modifier solution is pumped in the impregnating autoclave, pressurization makes modifier solution clamp-on timber, and pressure, time are depended on the material of timber.The uptake of Wood modifier is identical with normal pressure technology.

2, the dry processing

Timber is with behind the soup dipping, dries under the sun or can use with the solar heat pump kiln dried.Timber after the processing promptly has not yielding, does not ftracture, fire-retardant, corrosion-resistant function.

(2) wood performance detects after the modification.

Because the improvement that new method is old method, perfect, raising, its original performance only can improve (as fire resistance) and can not reduce, but applicable surface is wider.Performance Detection can be published in " forest-science " the 33rd volume the 6th phase (in November, 1997) " utilize that chemical modifier improves that timber size is stable, corrosion resistant and fire resistance " literary composition referring to the inventor.

1, the timber mechanics performance test results shows that the every physical and mechanical property behind the Wooden modifying remains unchanged substantially.Wood color is constant substantially, but texture is clear more attractive in appearance.

2, dimensional stability detects

Timber is after modification is handled, because moisture is present in the caused inflation phenomenon of cell membrane in the medicament replacing wood cell membrane, timber all has in various degree increase than untreated control part volume.Most commonly used timber measurement value addeds between 5-10%, minority timber even up to 15%, bamboo wood generally can increase 3-5%.Handle the most timber anti-shrinkage efficiencys commonly used in back between 50-70%, the bamboo wood anti-shrinkage efficiency is more than 70%.

3, antiseptic property detects

1. indoor domestomycetes inoculation test in three months

To brown rot fungus:

Handling back timber rate of weight loss is 1.8%

The unseasoned timber rate of weight loss is 16.5%

To whiterot fungi:

Handling back timber rate of weight loss is 0.4%

The back timber rate of weight loss that is untreated is 15.8%.

2. open-air pile anchoring test

On Hubei, Beijing and other places masson pine, poplar made the open-air pile anchoring check experiment in 3 years by a definite date.All proof is handled back foxiness degree and is significantly less than unseasoned timber.

4, fire resistance test

Through Ministry of Public Security's Tianjin fire house (national fixed fire extinguishing system and fire retarding component quality monitoring test center) test of many times, fire resistance reaches the GB8624-B1 level, belongs to nonflammable material.

5, product toxicity test

Product detects through Enviroment Hygiene and Hygiene Engineering Inst., China Preventive Medical Scien, product to its mouse oral LD greater than 21.5g/Kg, with reference to the nontoxic level in the true border of acute toxicity (LD50) grade scale.

Claims (3)

1. new invention " chemical modifier of a kind of raising wood (bamboo) material property " is the upgrading on former secret patent " a kind of method that improves wood dimensional stability " (patent No. ZL92109429.9) basis, is a kind of chemical modifier of new generation that integrates three doses of anticorrosion, fire-retardant, dimensionally stables.The inventor solemnly declares at this: former patentee does not only give any award of inventor, on the contrary superior unit is appropriated to inventor's research funding and divert to other purpose, and do not use up patentee's responsibility, do not pay annual fee for many years, in the patent right of in fact having abandoned already former invention.The present invention goes through research acquisition at one's own expense in 10 years after inventor's retirement, had no relation with former patentee, even when the inventor wants to support for former patentee in the hope of some to new invention all not with response, the inventor is not able in Zhejiang, two places, Guangdong factory carries out industrial experimentation to new invention and succeed, and all put into serial production two places.In order to make the present invention really become social productive forces; promote technological progress, inventor Beijing strong wooden precious scientific and technological development Co., Ltd that has to oneself establish the company applies for a patent; obtaining state guarantee, the patentee of this invention is Beijing strong wooden precious scientific and technological development Co., Ltd.

2. the prescription of new invention " chemical modifier of a kind of raising wood (bamboo) material property " and its preparation method key link that is know-how.Any entity or individual must not use " a kind of chemical modifier that improves wood (bamboo) material property " prescription and its preparation method to produce wood (bamboo) modifier under without the situation of prior licensing from the patentee.As under without the situation of prior licensing from the patentee, using this prescription and its preparation method producing and selling wood (bamboo) modifier to be considered as infringement.

3. the low-temperature production process of new invention " chemical modifier of a kind of raising wood (bamboo) material property " innovation wood (bamboo) material is the important component part of know-how.Any entity or individual must not use the prescription of " a kind of chemical modifier that improves wood (bamboo) material property " and its low-temperature production process to produce wood (bamboo) modified product under without the situation of prior licensing from the patentee.As under without the situation of prior licensing from the patentee, using this prescription and its low-temperature production process producing and selling wood (bamboo) modified product to be considered as infringement.