CN105773778A - Preparation method of free-glue floor - Google Patents

Preparation method of free-glue floor Download PDF

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Publication number
CN105773778A
CN105773778A CN201610267265.7A CN201610267265A CN105773778A CN 105773778 A CN105773778 A CN 105773778A CN 201610267265 A CN201610267265 A CN 201610267265A CN 105773778 A CN105773778 A CN 105773778A
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China
Prior art keywords
reactor
filtering residue
floor
particle
successively
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Application number
CN201610267265.7A
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Chinese (zh)
Inventor
吴迪
许博伟
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Individual
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Individual
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Priority to CN201610267265.7A priority Critical patent/CN105773778A/en
Publication of CN105773778A publication Critical patent/CN105773778A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
    • B27M3/04—Manufacture or reconditioning of specific semi-finished or finished articles of flooring elements, e.g. parqueting blocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/10—Moulding of mats
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/02—Pretreatment of the raw materials by chemical or physical means
    • D21B1/021—Pretreatment of the raw materials by chemical or physical means by chemical means
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Biochemistry (AREA)
  • Microbiology (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

The invention discloses a preparation method of a free-glue floor and belongs to the field of indoor decorating materials. The preparation method includes the steps that sugarcane residues, cotton stalks, wheat straw and maize straw which are widely available are adopted as raw materials; processed broken materials are placed in a closed container and subjected to pressure treatment with saturated steam, so that acetyl contained in cellulose of the broken materials generates acetic acid through hydrolyzation; pressure drops fast, so that fibers of the broken materials expand and crack instantly; the cellulose generates monomer fibers and fiber bundles, and the fiber surface characteristics are improved by utilizing cellulase for catalysis; and the cellulose and hemicellulose are made to generate more low-molecular carbohydrates through further hydrolyzation, xylan generated through decomposition is made to deposit by adding zinc sulfate so that the tensile strength and the bonding strength of the floor can be improved, and finally the needed free-glue floor is obtained through cutting. In the production process, final bonding is achieved through viscidity between degradation products of the raw materials, no organic adhesives are added, and harmful substances like formaldehyde cannot be released during later use.

Description

A kind of preparation method exempting from adhesive floor
Technical field
The invention discloses a kind of preparation method exempting from adhesive floor, belong to house decorative material field.
Background technology
At present, the composite floor board overwhelming majority produced both at home and abroad uses urea aldehyde or phenolic resin gluing to form.In order to reduce flooring material burst size of methanal, currently mainly approach has: modified adhesive, adhesive adds formaldehyde catching agent or the sheet material of later stage molding is carried out heat treatment, ammonia treatment, urea liquid sprinkling process etc., these measures are extensive use in the industrial production, but the burst size reducing composite floor board Free-formaldehyde that all can only be temporary transient, due to the release of formaldehyde be one long-term, process slowly and repeatedly, along with composite floor board uses time lengthening, Organic adhesive in sheet material is progressively degraded, produce formaldehyde endlessly, and it is discharged in room air, the serious infringement people's is healthy.
Bagasse grades carbohydrate containing abundant free sugar, when certain temperature and pressure, the polymer with good glued effect can be converted to, and containing abundant cellulose, hemicellulose and lignin in agricultural crop straw, individual fibers and fibre bundle that degraded produces can fortifying fibre plasticity, the small molecular sugar class that hemicellulose degradation produces can be combined formation viscose rayon with the lignin after activation, can realize the bonding naturally of material through heat pressing process.
Summary of the invention
nullThe technical problem that present invention mainly solves: for existing composite floor board in process of production，Adhesive used is slowly degraded in later stage use procedure and discharges free formaldehyde，The problem polluting indoor air environment，Provide a kind of preparation method exempting from adhesive floor，The present invention adopts the bagasse of wide material sources、Cotton stalk、Straw and corn straw are raw material，Through peeling process，After screening out suitable size，Gained disintegrating slag is soaked activation with rare sodium hydroxide solution，Improve particle interfacial characteristics，Promote that the later stage is glued，Particle after processing is put in hermetic container，Utilize saturated vapor pressurized treatments，Make the acetyl group hydrolysis generation acetic acid contained by cellulose in particle，When sour environment，In material, cellulose and hemicellulose are decomposed，Then blood pressure lowering rapidly，Particle fiber instantaneous expansion is made to break，Cellulose generates individual fibers and fibre bundle，The plasticity of fortifying fibre，Hemicellulose resolves into the saccharide of molecular weight，Recycling cellulase catalytic，Improve fiber surface characteristic，Make cellulose and hemicellulose be hydrolyzed the more small molecular sugar classes of generation further simultaneously，Add the xylan precipitation that zinc sulfate makes decomposition produce，Improve tensile strength and the bond strength on floor，In last hot pressing，Adjust suitable technological parameter，The lignin that cellulose and hemicellulose decompose saccharide and the activation produced is made to form viscose rayon，Promote the bonding of raw material particle，After cleaved，Adhesive floor is exempted from needed for finally preparing，The viscosity each other utilizing the catabolite of raw material own in the production process of the present invention realizes final bonding，Do not add any Organic adhesive，In later stage use procedure，The harmful substances such as formaldehyde will not be discharged.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is:
(1) 1～2kg bagasse is weighed successively, 1～2kg cotton stalk, 2.0～2.5kg straw, 3.0～3.5kg corn straw, puts in wood chipping equipment, carries out process of chipping, filter out and be of a size of: long 5～8cm, wide 0.5～2.0cm, the particle of thick 1～5mm, it is in 1～3%NaOH solution that gained particle is put into 7～10L mass concentration, under 500～700r/min rotating speed, after stirring 3～5h, filter, obtain filtering residue；
(2) above-mentioned gained filtering residue is added in closed reactor, set speed of agitator as 600～800r/min, saturated vapor is passed in reactor, until reacting kettle inner pressure reaches 1.8～2.0MPa, keep pressure 10～15min, open reactor bottom valve, make material in reactor spray in reception container；
(3) after the material in container to be received naturally cools to room temperature, proceed in the reactor filling 1～3L deionized water, set reactor speed of agitator as 400～600r/min, weigh 30～50g cellulase, 40～60gZnSO successively4Powder, under stirring, adds reactor, reacts 3～4h, filter, obtain filtering residue；
(4) above-mentioned gained filtering residue is dried naturally, until moisture content is 10～15% in filtering residue, obtain dry particle, be added in spreading machine, adjusting pavement thickness is 8～10cm, the material paved is proceeded to hot press, and regulating hot pressing temperature successively is 150～200 DEG C, and hot pressing pressure is 4.5～5.0MPa, hot-pressing processing 1～2min under these conditions, the demoulding, cuts into 80 × 12cm sheet material, must exempt from adhesive floor.
The concrete application process of the present invention: after the room door and window closedown on required paving floor is processed 6～8h, use room air detector detection formaldehyde content in indoor air, and record, repave the invention gained that loses money in a business and exempt from adhesive floor, after paving completes, after room door and window closedown is processed 24～48h, use room air monitor detection formaldehyde content in indoor air, and contrast before paving, both data consistents, gained of the present invention is exempted from adhesive floor and is not discharged any formaldehyde.
The invention has the beneficial effects as follows:
(1) utilizing abundant agricultural crop straw and bagasse is raw material, greatly reduces the environmental pollution that crop straw burning brings；
(2) gained of the present invention exempts from adhesive floor without any Organic adhesive, fundamentally solves a release tech difficult problem for composite floor board free formaldehyde.
Detailed description of the invention
Weigh 1～2kg bagasse, 1～2kg cotton stalk, 2.0～2.5kg straw successively, 3.0～3.5kg corn straw, puts in wood chipping equipment, carries out process of chipping, filter out and be of a size of: long 5～8cm, wide 0.5～2.0cm, the particle of thick 1～5mm, it is in 1～3%NaOH solution that gained particle is put into 7～10L mass concentration, under 500～700r/min rotating speed, after stirring 3～5h, filter, obtain filtering residue；Above-mentioned gained filtering residue is added in closed reactor, set speed of agitator as 600～800r/min, saturated vapor is passed in reactor, until reacting kettle inner pressure reaches 1.8～2.0MPa, keep pressure 10～15min, open reactor bottom valve, make material in reactor spray in reception container；After material in container to be received naturally cools to room temperature, proceed in the reactor filling 1～3L deionized water, set reactor speed of agitator as 400～600r/min, weigh 30～50g cellulase, 40～60gZnSO successively4Powder, under stirring, adds reactor, reacts 3～4h, filter, obtain filtering residue；Above-mentioned gained filtering residue is dried naturally, until moisture content is 10～15% in filtering residue, obtain dry particle, be added in spreading machine, adjusting pavement thickness is 8～10cm, the material paved is proceeded to hot press, and regulating hot pressing temperature successively is 150～200 DEG C, and hot pressing pressure is 4.5～5.0MPa, hot-pressing processing 1～2min under these conditions, the demoulding, cuts into 80 × 12cm sheet material, must exempt from adhesive floor.
Example 1
Weigh 1kg bagasse, 1kg cotton stalk, 2kg straw successively, 3kg corn straw, puts in wood chipping equipment, carries out process of chipping, filter out and be of a size of: long 5cm, wide 0.5cm, the particle of thick 1mm, it is in 1%NaOH solution that gained particle is put into 7L mass concentration, under 500r/min rotating speed, after stirring 3h, filter, obtain filtering residue；Above-mentioned gained filtering residue is added in closed reactor, sets speed of agitator as 600r/min, in reactor, pass into saturated vapor, until reacting kettle inner pressure reaches 1.8MPa, keep pressure 10min, open reactor bottom valve, make material in reactor spray in reception container；After material in container to be received naturally cools to room temperature, proceed in the reactor filling 1L deionized water, set reactor speed of agitator as 400r/min, weigh 30g cellulase, 40gZnSO successively4Powder, under stirring, adds reactor, reacts 3h, filter, obtain filtering residue；Above-mentioned gained filtering residue is dried naturally, until moisture content is 10% in filtering residue, obtain dry particle, be added in spreading machine, adjusting pavement thickness is 8cm, the material paved is proceeded to hot press, and regulating hot pressing temperature successively is 150 DEG C, and hot pressing pressure is 4.5MPa, hot-pressing processing 1min under these conditions, the demoulding, cuts into 80 × 12cm sheet material, must exempt from adhesive floor.
The concrete application process of the present invention: after the room door and window closedown on required paving floor is processed 6h, use room air detector detection formaldehyde content in indoor air, and record, repave the invention gained that loses money in a business and exempt from adhesive floor, after paving completes, after room door and window closedown is processed 24h, use room air monitor detection formaldehyde content in indoor air, and contrast before paving, both data consistents, gained of the present invention is exempted from adhesive floor and is not discharged any formaldehyde.
Example 2
Weigh 1.5kg bagasse, 1.5kg cotton stalk, 2.2kg straw successively, 3.2kg corn straw, puts in wood chipping equipment, carries out process of chipping, filter out and be of a size of: long 6cm, wide 1cm, the particle of thick 3mm, it is in 2%NaOH solution that gained particle is put into 8L mass concentration, under 600r/min rotating speed, after stirring 4h, filter, obtain filtering residue；Above-mentioned gained filtering residue is added in closed reactor, sets speed of agitator as 700r/min, in reactor, pass into saturated vapor, until reacting kettle inner pressure reaches 1.9MPa, keep pressure 12min, open reactor bottom valve, make material in reactor spray in reception container；After material in container to be received naturally cools to room temperature, proceed in the reactor filling 2L deionized water, set reactor speed of agitator as 500r/min, weigh 40g cellulase, 50gZnSO successively4Powder, under stirring, adds reactor, reacts 3.5h, filter, obtain filtering residue；Above-mentioned gained filtering residue is dried naturally, until moisture content is 12% in filtering residue, obtain dry particle, be added in spreading machine, adjusting pavement thickness is 9cm, the material paved is proceeded to hot press, and regulating hot pressing temperature successively is 180 DEG C, and hot pressing pressure is 4.8MPa, hot-pressing processing 1.5min under these conditions, the demoulding, cuts into 80 × 12cm sheet material, must exempt from adhesive floor.
The concrete application process of the present invention: after the room door and window closedown on required paving floor is processed 7h, use room air detector detection formaldehyde content in indoor air, and record, repave the invention gained that loses money in a business and exempt from adhesive floor, after paving completes, after room door and window closedown is processed 36h, use room air monitor detection formaldehyde content in indoor air, and contrast before paving, both data consistents, gained of the present invention is exempted from adhesive floor and is not discharged any formaldehyde.
Example 3
Weigh 2kg bagasse, 2kg cotton stalk, 2.5kg straw successively, 3.5kg corn straw, puts in wood chipping equipment, carries out process of chipping, filter out and be of a size of: long 8cm, wide 2.0cm, the particle of thick 5mm, it is in 3%NaOH solution that gained particle is put into 10L mass concentration, under 700r/min rotating speed, after stirring 5h, filter, obtain filtering residue；Above-mentioned gained filtering residue is added in closed reactor, sets speed of agitator as 800r/min, in reactor, pass into saturated vapor, until reacting kettle inner pressure reaches 2.0MPa, keep pressure 15min, open reactor bottom valve, make material in reactor spray in reception container；After material in container to be received naturally cools to room temperature, proceed in the reactor filling 3L deionized water, set reactor speed of agitator as 600r/min, weigh 50g cellulase, 60gZnSO successively4Powder, under stirring, adds reactor, reacts 4h, filter, obtain filtering residue；Above-mentioned gained filtering residue is dried naturally, until moisture content is 115% in filtering residue, obtain dry particle, be added in spreading machine, adjusting pavement thickness is 10cm, the material paved is proceeded to hot press, and regulating hot pressing temperature successively is 200 DEG C, and hot pressing pressure is 5.0MPa, hot-pressing processing 2min under these conditions, the demoulding, cuts into 80 × 12cm sheet material, must exempt from adhesive floor.
The concrete application process of the present invention: after the room door and window closedown on required paving floor is processed 8h, use room air detector detection formaldehyde content in indoor air, and record, repave the invention gained that loses money in a business and exempt from adhesive floor, after paving completes, after room door and window closedown is processed 48h, use room air monitor detection formaldehyde content in indoor air, and contrast before paving, both data consistents, gained of the present invention is exempted from adhesive floor and is not discharged any formaldehyde.

Claims (1)

1. the preparation method exempting from adhesive floor, it is characterised in that concrete preparation process is:
(1) 1～2kg bagasse is weighed successively, 1～2kg cotton stalk, 2.0～2.5kg straw, 3.0～3.5kg corn straw, puts in wood chipping equipment, carries out process of chipping, filter out and be of a size of: long 5～8cm, wide 0.5～2.0cm, the particle of thick 1～5mm, it is in 1～3%NaOH solution that gained particle is put into 7～10L mass concentration, under 500～700r/min rotating speed, after stirring 3～5h, filter, obtain filtering residue；
(2) above-mentioned gained filtering residue is added in closed reactor, set speed of agitator as 600～800r/min, saturated vapor is passed in reactor, until reacting kettle inner pressure reaches 1.8～2.0MPa, keep pressure 10～15min, open reactor bottom valve, make material in reactor spray in reception container；
(3) after the material in container to be received naturally cools to room temperature, proceed in the reactor filling 1～3L deionized water, set reactor speed of agitator as 400～600r/min, weigh 30～50g cellulase, 40～60gZnSO successively4Powder, under stirring, adds reactor, reacts 3～4h, filter, obtain filtering residue；
(4) above-mentioned gained filtering residue is dried naturally, until moisture content is 10～15% in filtering residue, obtain dry particle, be added in spreading machine, adjusting pavement thickness is 8～10cm, the material paved is proceeded to hot press, and regulating hot pressing temperature successively is 150～200 DEG C, and hot pressing pressure is 4.5～5.0MPa, hot-pressing processing 1～2min under these conditions, the demoulding, cuts into 80 × 12cm sheet material, must exempt from adhesive floor.
CN201610267265.7A 2016-04-27 2016-04-27 Preparation method of free-glue floor Withdrawn CN105773778A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610267265.7A CN105773778A (en) 2016-04-27 2016-04-27 Preparation method of free-glue floor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610267265.7A CN105773778A (en) 2016-04-27 2016-04-27 Preparation method of free-glue floor

Publications (1)

Publication Number Publication Date
CN105773778A true CN105773778A (en) 2016-07-20

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CN201610267265.7A Withdrawn CN105773778A (en) 2016-04-27 2016-04-27 Preparation method of free-glue floor

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106182312A (en) * 2016-07-26 2016-12-07 安徽香杨林业有限公司 A kind of straw reclaims system training technique
CN107254791A (en) * 2017-06-07 2017-10-17 常州中翔科技有限公司 A kind of method of waste crop straws recycling
CN107283590A (en) * 2017-06-27 2017-10-24 常州西夏墅东方工具有限公司 A kind of antiknock template glue-free artificial board

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106182312A (en) * 2016-07-26 2016-12-07 安徽香杨林业有限公司 A kind of straw reclaims system training technique
CN107254791A (en) * 2017-06-07 2017-10-17 常州中翔科技有限公司 A kind of method of waste crop straws recycling
CN107254791B (en) * 2017-06-07 2019-05-14 潞城市创蓝生物科技有限公司 A kind of method of waste crop straws resource utilization
CN107283590A (en) * 2017-06-27 2017-10-24 常州西夏墅东方工具有限公司 A kind of antiknock template glue-free artificial board

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Application publication date: 20160720