CN107012587A - A kind of natural environmental-protective type flaxen fiber enhancing degradable polyalcohol group felt material and its composite board and preparation method - Google Patents
A kind of natural environmental-protective type flaxen fiber enhancing degradable polyalcohol group felt material and its composite board and preparation method Download PDFInfo
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- CN107012587A CN107012587A CN201710337465.XA CN201710337465A CN107012587A CN 107012587 A CN107012587 A CN 107012587A CN 201710337465 A CN201710337465 A CN 201710337465A CN 107012587 A CN107012587 A CN 107012587A
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B15/00—Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
- D06B3/02—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fibres, slivers or rovings
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
- D06M13/203—Unsaturated carboxylic acids; Anhydrides, halides or salts thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/395—Isocyanates
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms
- D06M13/51—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond
- D06M13/513—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond with at least one carbon-silicon bond
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/002—Panels; Plates; Sheets
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
Abstract
Strengthen degradable polyalcohol group felt material the invention provides a kind of natural environmental-protective type flaxen fiber, it is mixed by natural ramie fiber and biodegradable polymer fiber, wherein natural ramie fiber must carry out degumming and modification, and wherein base material can be the degradable polymers such as PLA, carbon dioxide polymer.Degumming process is carried out to the technique that natural fiber is combined using deep cooling and machinery, then by graft modification, mixed with polymer-based fibers, by combing lapping process, felt material is prepared.Using the felt material, by duplex forging technique, composite board is prepared.The composite board prepared by the present invention, improve the interfacial combined function of natural fiber and polymeric matrix, and then the comprehensive mechanical property of composite board is improved, it is a kind of environmentally friendly, degradable, low VOC, high-performance, the new type natural fibre reinforced composites of thin-walled property.
Description
Technical field
The invention belongs to automobile decoration field of material technology.
Background technology
With the progress and the enhancing of people's environmental consciousness of science and technology, some materials of early stage are such as：Glass fiber compound material,
The problem of due to there is pollution and high cost, just gradually replaced by natural ramie fiber composite.Natural ramie fiber composite wood
Material has the advantages that inexpensive lightweight, environmental protection, density is low, specific strength is high, degradable renewable, moisture pick-up properties is good, its production
Amount is gradually lifted, and is widely used in various fields such as Aero-Space, automobile, furniture, decoration, electrical equipment.In addition,
China is hemp resource most abundant country in the world, has other country to be difficult to the resources advantage reached.There are flax, Nan Youjian in north
Fiber crops, east have hemp, west have bluish dogbane, in have ramie, most area has mestha, the general layout of jute.Flaxen fiber has higher
The characteristic such as intensity and modulus, less density, heat-resisting, wear-resisting, moisture absorption moisture-inhibiting, ventilative.Moreover, fibre of flax for textile material is easily planted, it is not required to
Chemical fertilizer is wanted, harvest time is short, yield is high.Therefore, flaxen fiber has potential industrial application value, and at home and abroad market has wide
Prospect.
But, during processing and using natural ramie fiber, due to the influence of the factors such as temperature, illumination, humidity, day
Right fibrous composite can produce volatile small organic molecule (VOC), such as：Formaldehyde, acetaldehyde, benzene, toluene, styrene etc..
In the environment of relative closure, with the contact of people directly or indirectly, the health of user will be endangered, this is largely restricted
The application and development of natural ramie fiber composite.In addition, it is increasingly strict with automobile environment-protection regulation, auto parts and components
Recuperability will be that major auto parts and components manufacturers must problems faced.Therefore, low VOC, degradable high-performance is produced to answer
Plywood material, the problem of into current urgent need to resolve.
The content of the invention
Above-mentioned in order to overcome the shortcomings of, the present invention provides a kind of natural environmental-protective type flaxen fiber enhancing degradable polyalcohol group felt
The preparation method of material and its composite board.
Using natural ramie fiber and biodegradable polymer fiber as raw material, the compound fibre of individual layer is obtained through shredding, mixing, combing
Thin net is tieed up, 6~10 layers of thin net of composite fibre of lapping simultaneously make fiber obtain felt material after linking by needling treatment；Natural fiber crops in felt material
The weight percentage of fiber is 30~70%, after the felt material is handled through enclosed compound Die Forging again, biodegradable polymer fiber
Solidification obtains composite board.
The natural ramie fiber is the mixing of 1~4 kind of china-hemp fibers, tossa, flax fiber, ramee or more
Thing.Degradable polymer is PLA (PLA is also polylactide), carbon dioxide polymer or PLA and carbon dioxide polymer
The mixture of the two.
Preparation method is comprised the following steps that：
1) natural ramie fiber 30wt%~70wt% is pressed, degradable polymer 70wt%~30wt% ratio weighs original
Material；
2) natural ramie fiber washing is removed after impurity and drying, it is fine to natural fiber crops using quick deep cooling degumming process method
Dimension carries out degumming process；
3) flaxen fiber after degumming process is impregnated into 30min~4h in surface conditioning agent, through repeatedly washing after taking-up, put
6~12h is dried in 80~100 DEG C of baking ovens, surface is obtained and is modified flaxen fiber；
4) by dry biodegradable polymer fiber with being modified flaxen fiber shredding with being well mixed, it is combined by combing
The thin net of fiber layer, 6~10 layers of staggered form laying, needle felting material；
5) felt material is full of impression, transfers them to releasing agent after felt material is heated into softening with vulcanizing press and uniformly apply
The metal of lower surface is spread in mould, first with the 10m/min quick matched moulds of speed during matched moulds, when matched molds are at a distance of 8~10cm,
It is changed to the speed matched moulds with 3m/min；10~20min is kept after matched moulds at a temperature of 50~80MPa pressure and 175~195 DEG C；
A kind of natural environmental-protective type flaxen fiber enhancing degradable polyalcohol group composite board is obtained after the demoulding.
Step 2) in quick deep cooling degumming process method it is specific as follows：Flaxen fiber is placed in deep freeze refrigeration plant, makes flaxen fiber
- 100 DEG C~-190 DEG C are cooled fast to, subzero treatment, cooling time 30min~12h is carried out.Then with 0.1~10 DEG C/min
Speed be warming up to normal temperature, stand 30min~5h.Then 40~60min of mechanical beating degumming.And use pH>At 13 alkaline solutions
Manage 20~40min, washing drying.
Step 3) in surface conditioning agent be the maleic anhydride aqueous solution, the silane coupler aqueous solution or diisocyanate-the third
The ketone aqueous solution.
Beneficial effects of the present invention：
One aspect of the present invention is to remove pectin, lignin and hemicellulose by degumming process, and effectively VOC is reduced with this
Volatilization.On the other hand it is to use enclosed compound Die Forging technique, improves stock utilization；Pass through high Stress control composite wood
The porosity of material, improves the interfacial combined function of natural fiber and polymeric matrix, improves the comprehensive mechanical property of composite board,
Obtain thin-walled property composite board.
Brief description of the drawings
Fig. 1 is that natural environmental-protective type flaxen fiber strengthens degradable polyalcohol group felt material schematic diagram；
Fig. 2 is that natural environmental-protective type flaxen fiber strengthens degradable polyalcohol group composite board schematic diagram；
Fig. 3 enclosed compound Die Forging process schematic representations.
In accompanying drawing：1- formers, 2- formpistons, 3- felts material, 4- temperature measuring points, 5- natural ramie fibers and biodegradable polymer fiber
The thin net of composite fibre.
Embodiment
Technical solution of the present invention is further explained and illustrated in the way of specific embodiment below.
Embodiment 1
1) china-hemp fibers are washed to remove the impurity in fiber first, the china-hemp fibers after drying is placed in deep cooling
In equipment, china-hemp fibers is cooled fast to -190 DEG C, carry out subzero treatment, cooling time is 5h；Then with 9 DEG C/min speed
Degree is warming up to normal temperature, and stands 2h；Mechanical degluing processing is carried out to the china-hemp fibers after subzero treatment using mechanical degluing equipment
40min；Alkali lye washing is carried out to the china-hemp fibers that mechanical degluing is treated, the sodium hydroxide liquid reclaimed water for being placed in 6g/L is washed
20min, removes the impurity of the non-cellulose of the china-hemp fibers remained on surface after mechanical degluing.Residual gum content is 1% after drying is combed
Below.
2) maleic anhydride is dissolved into the transparent 1wt% maleic anhydride aqueous solution, Chinese fiber crops and the bath raio of solution at 60 DEG C
For 1:50, degumming china-hemp fibers obtained by step (1) are put into this solution and handle 4h, repeatedly washing, is placed in 80 DEG C of baking ovens
8h is dried, it is standby；Carbon dioxide polymer is dried in vacuo 10h at 30~35 DEG C, to remove moisture.
3) by step 2) gained is modified china-hemp fibers and carbon dioxide polymer compares 4 according to weight:6 carry out shredding and uniform
Mixing, will be combed into the thin net being made up of composite fibre by preliminary shredding with the fibrous raw material mixed.Carding machine is exported
Staggered form laying method laying into the net is crossed into certain thickness web by thin Netcom.To ensure the uniformity of web, selection
7 layers of lapping.Then needle felting.
4) size of felt material is calculated according to the volume of impression in mould, suitable shape and size is cut out.Use flat board
Felt material is heated to softening by vulcanizer, is put into releasing agent and is uniformly smeared the metal of upper and lower surface in mould, being quickly first during matched moulds
10m/min, when matched molds are at a distance of 10cm, it is 3m/min at a slow speed to change.175 DEG C are heated to, 75MPa is pressurized to, the dwell time is
11min, curing molding, release is cooled to after room temperature and is stripped.
Embodiment 2
1) tossa is washed to remove the impurity in fiber first, the tossa after drying is placed in deep cooling
In equipment, tossa is cooled fast to -150 DEG C, carry out subzero treatment, cooling time is 3h；Then with 8 DEG C/min speed
Degree is warming up to normal temperature, and stands 3h；Mechanical degluing processing is carried out to the tossa after subzero treatment using mechanical degluing equipment
50min；Alkali lye washing is carried out to the tossa that mechanical degluing is treated, the sodium hydroxide liquid reclaimed water for being placed in 6g/L is washed
30min, removes the impurity of the non-cellulose of the tossa remained on surface after mechanical degluing.Residual gum content is 1% after drying is combed
Below.
2) it is 1 Silane coupling agent KH550 to be dissolved in into volume ratio:In 1 ethanol/water mixed solvent, configuration obtains quality point
(usage amount is according to 3% that the quality of silane coupler is pretreatment jute quality for the KH550 silane coupler solutions that number is 1%
Calculate), with second acid for adjusting pH value to 4, surface treatment liquid is obtained after stirring, by step 1) gained degumming tossa immersion
In the good surface treatment liquid of above-mentioned configuration, take out, rinsed repeatedly to neutrality after dipping 2h, be placed in 80 DEG C of baking ovens and dry 12h, it is standby
With.
3) by step 2) gained is modified tossa and PLA fibers compare 4 according to weight:6 progress shreddings are uniformly mixed, will be through
Cross fibrous raw material of the preliminary shredding with mixing and be combed into the single thin layer net being made up of two kinds of fibers.The thin Netcom that carding machine is exported
Staggered form laying method laying into the net is crossed into certain thickness web.To ensure the uniformity of web, lapping 8 is selected
Layer.Then needle felting.
4) size of felt material is calculated according to the volume of impression in mould, suitable shape and size is cut out.Use flat board
Felt material is heated to softening by vulcanizer, is put into releasing agent and is uniformly smeared the metal of upper and lower surface in mould, being quickly first during matched moulds
10m/min, when matched molds are at a distance of 10cm, it is 3m/min at a slow speed to change.195 DEG C are heated to, 70MPa is pressurized to, the dwell time is
17min, curing molding, release is cooled to after room temperature and is stripped.
Embodiment 3
1) flax fiber is washed to remove the impurity in fiber first, the flax fiber after drying is placed in deep cooling
In equipment, flax fiber is cooled fast to -130 DEG C, carry out subzero treatment, cooling time is 5h；Then with 6 DEG C/min speed
Degree is warming up to normal temperature, and stands 4h；Mechanical degluing processing is carried out to the flax fiber after subzero treatment using mechanical degluing equipment
50min；Alkali lye washing is carried out to the flax fiber that mechanical degluing is treated, the sodium hydroxide liquid reclaimed water for being placed in 6g/L is washed
40min, removes the impurity of the non-cellulose of the flax fiber remained on surface after mechanical degluing.Residual gum content is 1% after drying is combed
Below.
2) by step 1) gained degumming flax fiber, by bath raio 1:25, it is added in 5wt% aqueous acetone solution, then add
Enter diisocyanate, the amount ratio of diisocyanate and flax compares 1 for weight:1, the concentrated sulfuric acid, which is added dropwise, makes pH to 2.5~3, water-bath
65 DEG C of heating, impregnates 6h.Repeatedly after washing, it is placed in 80 DEG C of baking ovens and dries 7h, it is standby.
3) by step 2) the modified flax fiber of gained with PLA fibers according to 6:4 are uniformly mixed, and will pass through preliminary shredding
The single thin layer net being made up of two kinds of fibers is combed into the fibrous raw material mixed.Staggered form paving is crossed by the thin Netcom that carding machine is exported
Method laying into the net is folded into certain thickness web.To ensure the uniformity of web, 7 layers of lapping is selected.Then acupuncture
Into felt.
4) size of felt material is calculated according to the volume of impression in mould, suitable shape and size is cut out.Use flat board
Felt material is heated to softening by vulcanizer, is put into releasing agent and is uniformly smeared the metal of upper and lower surface in mould, being quickly first during matched moulds
10m/min, when matched molds are at a distance of 10cm, it is 3m/min at a slow speed to change.180 DEG C are heated to, 60MPa is pressurized to, the dwell time is
14min, curing molding, release is cooled to after room temperature and is stripped.
Embodiment 4
1) ramee is washed to remove the impurity in fiber first, the ramee after drying is placed in deep cooling
In equipment, ramee is cooled fast to -100 DEG C, carry out subzero treatment, cooling time is 12h；Then with 4 DEG C/min's
Speed is warming up to normal temperature, and stands 5h；The ramee after subzero treatment is carried out at mechanical degluing using mechanical degluing equipment
Manage 60min；Alkali lye washing is carried out to the ramee that mechanical degluing is treated, the sodium hydroxide liquid reclaimed water for being placed in 6g/L is washed
30min, removes the impurity of the non-cellulose of the ramee remained on surface after mechanical degluing.Residual gum content is 1% after drying is combed
Below.
2) silane coupling A 151 is dissolved in volume ratio 3:In 2 ethanol/water mixed solvent, configuration quality fraction is 1%
Silane coupler solution, with second acid for adjusting pH to 3~3.5, the bath raio of ramie and silane coupler solution is 1:50, stirring is equal
After even, and by step 1) gained degummed ramie fiber immerses in the good silane coupler solution of above-mentioned configuration, taken after dipping 30min
Go out, rinse repeatedly to neutrality, be put into 100 DEG C of baking ovens and dry 8h, it is standby.By carbon dioxide polymer at 30~35 DEG C vacuum
10h is dried, to remove moisture.
3) by step 2) mixture of gained modified ramie and PLA fibers and carbon dioxide polymer is according to 6:4 enter
The uniform mixing of row, will be combed into the single thin layer net being made up of three kinds of fibers by preliminary shredding with the fibrous raw material mixed.Will comb
Staggered form laying method laying into the net is crossed into certain thickness web by the thin Netcom of reason machine output.To ensure the equal of web
Evenness, selects 8 layers of lapping, then needle felting.
4) size of felt material is calculated according to the volume of impression in mould, suitable shape and size is cut out.Use flat board
Felt material is heated to softening by vulcanizer, is put into releasing agent and is uniformly smeared the metal of upper and lower surface in mould, being quickly first during matched moulds
10m/min, when matched molds are at a distance of 10cm, it is 3m/min at a slow speed to change.180 DEG C are heated to, 50MPa is pressurized to, the dwell time is
19min, curing molding, release is cooled to after room temperature and is stripped.
Beneficial effects of the present invention are illustrated below by way of experimental example.
The composite board obtained in embodiment 1,2,3,4 is uniformly cut into 5 battens, and 120 are polished into sampling machine
× 10 × 2mm specification, this specification is used as bending property test sample.Using universal testing machine, enter according to ISO527-1 standards
Row test, using three-point bending method, rate of bending is 5mm/min, and span is 95mm；By the batten system of 120 × 10 × 2mm specifications
Into dumbbell shape, two ends size is 120 × 10 × 2mm, and intermediate sizes are 120 × 5 × 2mm, are used as Tensile test specimens.Using ten thousand
Can testing machine, tested, draw speed is 5mm/min, clamped away from for 100mm according to ISO178 standards；By 120 × 10 × 2mm
The batten of specification with sampling machine in the sample between make the V word grooves of 0.2 times of thickness, be used as notch shock test sample, use
Universal testing machine, is tested according to ISO179 standards, and impact velocity is 5mm/min, and acquired results are made into table 1.
Table 1
Claims (8)
1. a kind of natural environmental-protective type flaxen fiber strengthens degradable polyalcohol group felt material, it is characterised in that the felt material is by 6~10 layers
The thin Netcom of composite fibre crosses fiber and links to form felt body, and the thin net of composite fibre is fine by natural ramie fiber and degradable polymer
Dimension mixing is interwoven；The natural ramie fiber is china-hemp fibers, tossa, flax fiber, ramee or more 1~4
The mixture planted；Degradable polymer is both PLA, carbon dioxide polymer or PLA and carbon dioxide polymer
Mixture.
2. natural environmental-protective type flaxen fiber according to claim 1 strengthens degradable polyalcohol group felt material, it is characterised in that felt
The weight percentage of natural ramie fiber is 30~70% in material.
3. a kind of natural environmental-protective type flaxen fiber strengthens degradable polyalcohol group composite board, it is characterised in that the sheet material is by natural
Flaxen fiber and biodegradable polymer fiber are mutually mixed, fiber interweaving and by polymer fiber solidification form；The natural fiber crops are fine
Tie up the mixture for 1~4 kind of china-hemp fibers, tossa, flax fiber, ramee or more；Degradable polymer is poly-
The mixture of both lactic acid, carbon dioxide polymer or PLA and carbon dioxide polymer.
4. natural environmental-protective type flaxen fiber according to claim 3 strengthens degradable polyalcohol group composite board, its feature exists
In the weight percentage of natural ramie fiber is 30~70% in the composite board.
5. a kind of natural environmental-protective type flaxen fiber strengthens the preparation method of degradable polyalcohol group felt material, comprise the following steps that：
1) natural ramie fiber 30wt%~70wt% is pressed, degradable polymer 70wt%~30wt% ratio weighs raw material；
2) natural ramie fiber washing is removed after impurity and drying, natural ramie fiber entered using quick deep cooling degumming process method
Row degumming process；
3) flaxen fiber after degumming process is impregnated into 30min~4h in surface conditioning agent, through repeatedly washing after taking-up, is placed in 80
6~12h is dried in~100 DEG C of baking ovens, surface is obtained and is modified flaxen fiber；
4) by dry biodegradable polymer fiber with being modified flaxen fiber shredding with being well mixed, composite fibre is obtained by combing
Single thin layer net, 6~10 layers of staggered form laying, needle felting material；
Step 3) in surface conditioning agent be the maleic anhydride aqueous solution, the silane coupler aqueous solution or diisocyanate-acetone water
Solution.
6. natural environmental-protective type flaxen fiber according to claim 5 strengthens the preparation method of degradable polyalcohol group felt material, its
Be characterised by, step 2) in quick deep cooling degumming process method it is specific as follows：
Flaxen fiber is placed in deep freeze refrigeration plant, flaxen fiber is cooled fast to -100 DEG C~-190 DEG C, subzero treatment, freezing is carried out
Time 30min~12h；Then normal temperature is warming up to 0.1~10 DEG C/min speed, stands 30min~5h；Then mechanical beating
40~60min of degumming；And use pH>13 alkaline solutions handle 20~40min, washing drying.
7. a kind of natural environmental-protective type flaxen fiber strengthens the preparation method of degradable polyalcohol group felt material, it is characterised in that
1) natural ramie fiber 30wt%~70wt% is pressed, degradable polymer 70wt%~30wt% ratio weighs raw material；
2) natural ramie fiber washing is removed after impurity and drying, natural ramie fiber entered using quick deep cooling degumming process method
Row degumming process；
3) flaxen fiber after degumming process is impregnated into 30min~4h in surface conditioning agent, through repeatedly washing after taking-up, is placed in 80
6~12h is dried in~100 DEG C of baking ovens, surface is obtained and is modified flaxen fiber；
4) by dry biodegradable polymer fiber with being modified flaxen fiber shredding with being well mixed, composite fibre is obtained by combing
Single thin layer net, 6~10 layers of staggered form laying, needle felting material；
5) by felt material be full of impression, with vulcanizing press by felt material be heated to softening after transfer them to releasing agent uniformly apply spread
The metal of lower surface during matched moulds with the 10m/min quick matched moulds of speed in mould, first when matched molds are at a distance of 8~10cm, being changed to
With 3m/min speed matched moulds；10~20min is kept after matched moulds at a temperature of 50~80MPa pressure and 175~195 DEG C；The demoulding
After obtain a kind of natural environmental-protective type flaxen fiber enhancing degradable polyalcohol group composite board.
8. natural environmental-protective type flaxen fiber according to claim 5 strengthens the preparation method of degradable polyalcohol group felt material, its
Be characterised by, step 2) in quick deep cooling degumming process method it is specific as follows：
Flaxen fiber is placed in deep freeze refrigeration plant, flaxen fiber is cooled fast to -100 DEG C~-190 DEG C, subzero treatment, freezing is carried out
Time 30min~12h；Then normal temperature is warming up to 0.1~10 DEG C/min speed, stands 30min~5h；Then mechanical beating
40~60min of degumming；And use pH>13 alkaline solutions handle 20~40min, washing drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710337465.XA CN107012587A (en) | 2017-05-15 | 2017-05-15 | A kind of natural environmental-protective type flaxen fiber enhancing degradable polyalcohol group felt material and its composite board and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710337465.XA CN107012587A (en) | 2017-05-15 | 2017-05-15 | A kind of natural environmental-protective type flaxen fiber enhancing degradable polyalcohol group felt material and its composite board and preparation method |
Publications (1)
| Publication Number | Publication Date |
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| CN107012587A true CN107012587A (en) | 2017-08-04 |
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| CN108248145A (en) * | 2018-01-05 | 2018-07-06 | 长春博超汽车零部件股份有限公司 | A kind of natural ramie fiber enhancing polymer matrix composite board of formaldehydeless and acetaldehyde release and preparation method thereof |
| CN109796611A (en) * | 2019-01-10 | 2019-05-24 | 吉林大学 | A kind of in-stiu coating subzero treatment basalt fibre mixes flaxen fiber reinforced resin based composites preparation method |
| CN112981708A (en) * | 2021-05-11 | 2021-06-18 | 宁波霓科新材料有限公司 | Degradable hybrid fiber breathable felt, preparation method and drying method thereof |
| CN113045867A (en) * | 2021-03-15 | 2021-06-29 | 哈尔滨工业大学 | Preparation method of degradable composite material based on modified hemp fibers |
| CN113927968A (en) * | 2021-11-23 | 2022-01-14 | 郴州湘南麻业有限公司 | Jute environment-friendly non-woven composite cloth for packaging and preparation method thereof |
| WO2022157728A1 (en) * | 2021-01-25 | 2022-07-28 | King Abdullah University Of Science And Technology | Wax-coated jute fabric and method |
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| WO2022157728A1 (en) * | 2021-01-25 | 2022-07-28 | King Abdullah University Of Science And Technology | Wax-coated jute fabric and method |
| CN113045867A (en) * | 2021-03-15 | 2021-06-29 | 哈尔滨工业大学 | Preparation method of degradable composite material based on modified hemp fibers |
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