CN1900131A - Method for bamboo liquifying substance phenolic glue - Google Patents

Method for bamboo liquifying substance phenolic glue Download PDF

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Publication number
CN1900131A
CN1900131A CN 200610052421 CN200610052421A CN1900131A CN 1900131 A CN1900131 A CN 1900131A CN 200610052421 CN200610052421 CN 200610052421 CN 200610052421 A CN200610052421 A CN 200610052421A CN 1900131 A CN1900131 A CN 1900131A
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China
Prior art keywords
bamboo
liquifying
phenolic glue
substance
glue
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CN 200610052421
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Chinese (zh)
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CN100432117C (en
Inventor
傅深渊
刘力
程书娜
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Zhejiang A&F University ZAFU
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Zhejiang Forestry College
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Priority to CNB2006100524214A priority Critical patent/CN100432117C/en
Publication of CN1900131A publication Critical patent/CN1900131A/en
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Publication of CN100432117C publication Critical patent/CN100432117C/en
Expired - Fee Related legal-status Critical Current
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  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Phenolic Resins Or Amino Resins (AREA)

Abstract

The bamboo liquefying phenolic glue is prepared through heating phenol compound in 50-200 weight portions to 90-140 deg.c inside a reactor; adding acid catalyst in 10 -20 weight portions and bamboo powder in 50-150 weight portions through stirring to react to obtain liquid matter; cooling to 55 deg.c, regulating pH value with alkali to 8-12, adding water and aldehyde to react for 1 hr, heating to 80-100 deg.c and reacting for 1 hr; cooling and discharging. The bamboo liquefying phenolic glue is used as adhesive for bamboo and wood product. The present invention has low cost, and the produced bamboo liquefying phenolic glue has high plasticity.

Description

Method for bamboo liquifying substance phenolic glue
Technical field
The present invention relates to bamboo wood pulverizing back and under acidic conditions, produce the liquefaction thing, under alkaline condition, carry out addition polycondensation again and react the method that generates phenolic glue with aldehydes with the phenolic material reaction.
Background technology
In the later stage in last century, Wood liquefied research is set about by states such as Japan, and timber is in phenol or polyalcohol organic solvent, with making glue again behind an acidic catalyst reacting by heating generation timber liquefied matter.
CN1554724A discloses Chinese Academy Of Forestry Research Institute Of Wood Industry " preparation method of the wooden modified phenolic adhesive that liquefies " patented technology, increase the polarity small molecules and make solvent, with the mode of phenol with mixed solvent, under an acidic catalyst condition, react with wood powder, after producing timber liquefied matter, use and the wooden modified phenolic adhesive of Japan's essentially identical method production liquefaction.
Prior art is all made main raw material with timber and is come glue in a word, timber is long because of the arboreal growth cycle, raw material is in short supply day by day, higher, the difficult decomposition of the xylon polymerization degree, liquefaction condition requires higher, timber does not contain or seldom contains wax, lacks the advantage that the dewaxing meeting improves the liquefier flowability, thereby can not have the reaction of dewaxing and aldehydes matter to generate the advantage that alkylphenol improves liquefaction thing plasticity substantially.
Summary of the invention
At the above-mentioned deficiency of prior art, the purpose of this invention is to provide a kind of is the method for bamboo liquifying substance phenolic glue of main raw material with the bamboo powder.Its design philosophy is to utilize the growth cycle of bamboo short, abundant raw material; The polymerization degree of bamboo fibers and its xylogen is low, and hemicellulose components is many, decomposes easily, and liquefaction condition requires relatively low; Wax is rich on the bamboo wood surface, dewaxing, the flowability that help improve liquefier little in liquefaction reaction because of its surface tension, moreover bamboo fibers is than xylon porous, infiltration absorption is fast, therefore needn't add polarity small molecules solvent; Can generate alkylphenol with the phenols reaction after the natural wax fusing in the bamboo powder, liquefaction thing plasticity is improved; Bamboo fibers is more perfectly straight than xylon, and few distortion is pulverized easily, and powder process is convenient.Therefore say, select for use the bamboo powder to make main raw material by its many internal factor decision.
Purpose of the present invention can realize by following measure: production technique divides two steps to carry out:
(1) preparation of bamboo phenol liquified object: the phenolic compound that in reactor, adds the 50-200 weight part, heating, stirring, be warmed up to 90-140 ℃, add 10-20 weight part an acidic catalyst, add 50-150 weight part bamboo powder again, stir, insulation reaction 2h estimates no particulate matter, then liquefaction reaction is finished, be cooled to 40-70 ℃ standby.
(2) production of bamboo liquefaction substance phenolic glue: in the reactor that the bamboo phenol liquified object that is cooled to 40-70 ℃ is housed, add basic catalyst and transfer PH8-12, add entry, aldehydes, three's weight ratio is a bamboo liquefaction thing: water: aldehydes=1: 0.8-1.2: 0.8-1.2, insulation reaction 25-115min, be warming up to 80-100 ℃ in normal pressure, reaction 15-100min is when reaching the viscosity of setting, the addition polycondensation reaction is finished, cooling, blowing.
Purpose of the present invention can also be come perfect by following measure: the bamboo powder of 50-150 weight part is divided into 2-3 adding; Phenolic compound is at least a in phenol, cresols, xylenol, alkylphenol, the Resorcinol; The tart catalyzer is at least a in oxalic acid, phosphoric acid, hydrochloric acid, sulfuric acid, the acetate; Said aldehydes adds at twice; Said aldehydes is at least a in formaldehyde, acetaldehyde, the furfural; Said basic catalyst is NaoH, KOH, ammoniacal liquor, Ba (oH) 2In at least a.
Embodiment
The present invention is set forth below in conjunction with embodiment: among the present invention, 50-150 part bamboo powder can 1 property join reactor, fully stirs, also can divide and add for 2-3 time, treating that the bamboo powder that adds first liquefies fully promptly adds bamboo powder next time, whenever adds once the about 5-20 of insulation reaction minute.If reacted the slow acid that then adds.Whole liquefaction can be at normal pressure or is slightly carried out in the pressurization.In the glue step, aldehydes also can once add or add at twice, adds 2/3 of total amount first, and secondary adds 1/3 of remainder, and notices that pH value should maintain 8-12, and deficiency should be added.
Embodiment 1:
200 weight part phenol are poured in the reactor stir, be warmed up to 120 ℃, adding 15 weight part concentrated hydrochloric acids, adding granularity again is 200 purpose bamboo powder, 150 weight parts, fully stir, insulation reaction 1.5h bamboo phenol liquified object, to be cooled during to 50 ℃, add NaoH and transfer PH=9, by weight be bamboo phenol liquified object: water: the amount of formaldehyde=1: 1: 1 is with water, formaldehyde adding reactor, insulation reaction 1h heats up 90 ℃ under normal pressure, reacts 1h again, reaction is finished, cooling, blowing.
Embodiment 2:
150 weight part cresols are poured in the reactor, stirred, be warmed up to 90 ℃, add the 20 weight part vitriol oils, add 100 weight parts, 200 purpose bamboo powder again, fully stir insulation reaction 20min, add 50 weight part bamboo powder again, stir, insulation reaction 2h bamboo phenol liquified object.Follow-up one-tenth glue step is identical with embodiment 1, and catalyzer changes KOH into, and furfural adds at twice.
Embodiment 3:
200 weight part xylenols are poured in the reactor, stir, be warmed up to 140 ℃, add 20 weight part phosphoric acid, add 50 weight parts, 200 order bamboo powder again, fully stir, insulation reaction 15min adds 50 weight part bamboo powder again, fully stir, insulation reaction 15min adds 50 weight part bamboo powder for the third time again, fully stirs insulation reaction 2.5h again.Follow-up one-tenth glue step is identical with embodiment 1, and catalyzer changes Ba (OH) into 2Acetaldehyde adds at twice.
Above-mentioned three embodiment are preferred with embodiment 1.After total reaction times of three examples finished, the viscosity of its phenolic glue all reached the setting requirement.
Selected an acidic catalyst, basic catalyst, phenolic material and aldehydes consider that mainly the quality and the purposes of raw materials cost, source, speed of response, liquefaction thing and phenolic glue select.
Bamboo that the present invention makes liquefaction substance phenolic glue, outward appearance is the brown jelly, PH=0-12, solid content 45-55%, storage period>90 day, bonding strength>1.0Mpa.
It is low that the present invention has the raw material of selecting for use glue cost more reasonable, that make compared to existing technology, during the preparation bamboo phenol liquified object, do not need the polarity small molecules to make secondary solvent, can utilize this a kind of natural mode wax of bamboo wax to obtain alkylphenol, thereby increase advantage such as plasticity.

Claims (7)

1, a kind of method for bamboo liquifying substance phenolic glue is characterized in that two steps of branch carry out:
(1) preparation of bamboo phenol liquified object: the phenolic compound that in reactor, adds the 50-200 weight part, heating, stirring, be warmed up to 90-140 ℃, add 10-20 weight part an acidic catalyst, add 50-150 weight part bamboo powder again, stir, insulation reaction 2h estimates no particulate matter, then liquefaction reaction is finished, be cooled to 40-70 ℃ standby.
(2) production of bamboo liquefaction substance phenolic glue: in the reactor that the bamboo phenol liquified object that is cooled to 40-70 ℃ is housed, add basic catalyst and transfer PH8-12, add entry, aldehydes, three's weight ratio is a bamboo phenol liquified object: water: aldehydes=1: 0.8-1.2: 0.8-1.2, insulation reaction 25-115min, be warming up to 80-100 ℃ in normal pressure, reaction 15-100min is when reaching the viscosity of setting, the addition polycondensation reaction is finished, cooling, blowing.
2, method for bamboo liquifying substance phenolic glue as claimed in claim 1 is characterized in that the bamboo powder of 50-150 weight part is divided into 2-3 adding in the bamboo phenol liquified object preparation.
3, method for bamboo liquifying substance phenolic glue as claimed in claim 1 is characterized in that phenolic compound is at least a in phenol, cresols, xylenol, alkylphenol, the Resorcinol in the said bamboo phenol liquified object preparation.
4, method for bamboo liquifying substance phenolic glue as claimed in claim 1 is characterized in that an acidic catalyst is at least a in oxalic acid, phosphoric acid, hydrochloric acid, sulfuric acid, the acetate in the said bamboo phenol liquified object preparation.
5, method for bamboo liquifying substance phenolic glue as claimed in claim 1 is characterized in that said aldehydes adds at twice.
6, method for bamboo liquifying substance phenolic glue as claimed in claim 1 is characterized in that said aldehydes is at least a in formaldehyde, acetaldehyde, the furfural.
7, method for bamboo liquifying substance phenolic glue as claimed in claim 1 is characterized in that said basic catalyst is NaoH, KOH, ammoniacal liquor, Ba (oH) 2In at least a.
CNB2006100524214A 2006-07-12 2006-07-12 Method for bamboo liquifying substance phenolic glue Expired - Fee Related CN100432117C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2006100524214A CN100432117C (en) 2006-07-12 2006-07-12 Method for bamboo liquifying substance phenolic glue

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Application Number Priority Date Filing Date Title
CNB2006100524214A CN100432117C (en) 2006-07-12 2006-07-12 Method for bamboo liquifying substance phenolic glue

Publications (2)

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CN1900131A true CN1900131A (en) 2007-01-24
CN100432117C CN100432117C (en) 2008-11-12

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101619547B (en) * 2009-07-27 2012-04-04 黄山学院 Method of high-value comprehensive utilization of bamboo remainders
CN102504275A (en) * 2011-11-21 2012-06-20 浙江省林业科学研究院 Production method of bamboo phenolic alcohol liquefied products
CN102643399A (en) * 2012-05-11 2012-08-22 南通新洋环保板业有限公司 Preparation method of modified phenolic resin for bamboo container flooring
CN103289310A (en) * 2013-06-13 2013-09-11 北京林业大学 Wood liquefied substance foamed material and preparation method thereof
CN105111981A (en) * 2015-09-21 2015-12-02 福建农林大学 Application of bamboo powder
CN105754059A (en) * 2016-05-18 2016-07-13 浙江大学 Thermoplastic phenolic resin synthesized by liquefied bamboo waste as well as preparation method and application of thermoplastic phenolic resin

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0666155B1 (en) * 1994-01-28 1998-04-08 Forestry And Forest Products Research Institute Wood piled with split and disrupted pieces and its manufacturing method and manufacturing apparatus
CN1554724A (en) * 2003-12-23 2004-12-15 中国林业科学研究院木材工业研究所 Process for preparing liquefied wood phenolic adhesive

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101619547B (en) * 2009-07-27 2012-04-04 黄山学院 Method of high-value comprehensive utilization of bamboo remainders
CN102504275A (en) * 2011-11-21 2012-06-20 浙江省林业科学研究院 Production method of bamboo phenolic alcohol liquefied products
CN102643399A (en) * 2012-05-11 2012-08-22 南通新洋环保板业有限公司 Preparation method of modified phenolic resin for bamboo container flooring
CN103289310A (en) * 2013-06-13 2013-09-11 北京林业大学 Wood liquefied substance foamed material and preparation method thereof
CN103289310B (en) * 2013-06-13 2015-04-15 北京林业大学 Wood liquefied substance foamed material and preparation method thereof
CN105111981A (en) * 2015-09-21 2015-12-02 福建农林大学 Application of bamboo powder
CN105111981B (en) * 2015-09-21 2017-08-01 福建农林大学 A kind of application of bamboo powder
CN105754059A (en) * 2016-05-18 2016-07-13 浙江大学 Thermoplastic phenolic resin synthesized by liquefied bamboo waste as well as preparation method and application of thermoplastic phenolic resin
CN105754059B (en) * 2016-05-18 2018-05-04 浙江大学 A kind of thermoplastic phenolic resin synthesized by bamboo wood scrap material liquefied substance and preparation method and application

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Granted publication date: 20081112

Termination date: 20110712