CN106243650A - A kind of ageing-resistant polylactic acid wood plastic composite - Google Patents
A kind of ageing-resistant polylactic acid wood plastic composite Download PDFInfo
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- CN106243650A CN106243650A CN201610610778.3A CN201610610778A CN106243650A CN 106243650 A CN106243650 A CN 106243650A CN 201610610778 A CN201610610778 A CN 201610610778A CN 106243650 A CN106243650 A CN 106243650A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
- B29B7/005—Methods for mixing in batches
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
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- Compositions Of Macromolecular Compounds (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
The invention discloses the preparation method of a kind of ageing-resistant polylactic acid wood plastic composite: the preparation of (1) Plant fiber: take cocoanut fiber, sugarcane bagasse, pine powder, mix homogeneously；(2) Plant fiber's enzyme modification: mixed plant fiber is put into according to the ratio of weight ratio 1:30 and is modified in enzymatic solution processing；Modified, use clear water rinsed clean, 60 DEG C of drying；(3) raw material is blended: the raw material having configured dried according to following parts by weight: modified plant fibers 38 56 parts, polylactic acid 100 120 parts, nano-calcium carbonate 0.8 part；After being melted the most completely by the polylactic acid pellet weighed, being uniformly added into modified plant fibers, after mix homogeneously, add other all raw materials, adjustment rotating speed is 30r/min, and then stirring is blended 5 6min, makes raw material be sufficiently mixed uniformly；(4) precompressed；(5) hot-forming.
Description
Technical field
The present invention relates to a kind of ageing-resistant polylactic acid wood plastic composite, belong to wood and mould manufacture field.
Background technology
The nearly more than ten years, Wood Plastics Composite Product gradually moves towards market, but some Wood-plastic material performances are the most undesirable, such as punching
Hit intensity, bending modulus are relatively low.Raising wood powder content may result in wood plastic composite impact property and drastically declines, as loading surpasses
After 40% time, impact property reduces by more than 50%;In addition wood powder content improves and exacerbates the inflammability that wood is moulded, and good anti-flammability
It can be one of the important performance of construction material.Therefore, improve mechanical property and fire resistance is that raising wood plastic composite is extensive
The key of application.
Wood plastic composite (WPC) is the organic combination of Plant fiber and plastics, has taken into account Plant fiber and plastics
Double grading, existing timber and the premium properties of plastics, overcome again timber and plastics some shortcomings inherently simultaneously.Though
So WPC has more advantage, but it also has the respective shortcoming of bi-material: as plastic material is susceptible to degradation with aging,
The wood fiber is susceptible to rotten etc..The most a lot of WPC products are all used for outdoor, thus to the aging of WPC and antiseptic property
Research tool is of great significance.
Comparing Traditional Wood plastic composite materials, polylactic acid (PLA) wood plastic composite is due to its good biodegradability
And have more preferable using value.
It is desirable to provide a kind of ageing-resistant polylactic acid wood plastic composite, its existing good biodegradability,
There is again good ageing-resistant performance.
Summary of the invention
The shortcoming that the present invention is directed to polylactic acid wood plastic material of the prior art, it is provided that a kind of ageing-resistant polylactic acid wood is moulded multiple
Condensation material, its existing good biodegradability, there is again good ageing-resistant performance.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of ageing-resistant polylactic acid wood plastic composite, it is prepared via a method which to obtain:
(1) preparation of Plant fiber:
According to following parts by weight, take cocoanut fiber 20-30 part, sugarcane bagasse 5-9 part, pine powder 8-12 part, mix homogeneously；
(2) Plant fiber's enzyme modification:
According to following parts by weight, take lignin peroxidase 0.3-0.5 part, laccase 0.5-1 part, polyphenol oxidase 0.3 part,
100 parts of water, is prepared as enzymatic solution；
Mixed plant fiber is put in enzymatic solution according to the ratio of weight ratio 1:30, keeps constant temperature 25 DEG C to process 30min, then
Being warming up to 38 DEG C and process 30-40min, finally heated to 80 DEG C process 50min；
Modified, use clear water rinsed clean, 60 DEG C of drying；
(3) raw material is blended:
The raw material having configured dried according to following parts by weight: modified plant fibers 38-56 part, polylactic acid 100-120 part, receives
Rice calcium carbonate 0.8 part；
After being melted the most completely by the polylactic acid pellet weighed, it is uniformly added into modified plant fibers, after mix homogeneously, then
Adding other all raw materials, adjustment rotating speed is 30r/min, and then stirring is blended 5-6min, makes raw material be sufficiently mixed uniformly；
(4) precompressed:
Blend after mill is pressed into the most in advance the thick sheet material of 8mm, standby；
(5) hot-forming:
By above-mentioned precompressed blend preheated 10min on vulcanizing press, pressure release PB 3min repeatedly, remove compound
Bubble in material melt, cools down molding, prepares ageing-resistant polylactic acid wood plastic composite after pressurize 10min.
The invention have benefit that:
The invention provides a kind of ageing-resistant polylactic acid wood plastic composite, its raw material is natural, existing good biodegradable
Property, there is again good ageing-resistant performance.
Detailed description of the invention
Embodiment 1:
A kind of ageing-resistant polylactic acid wood plastic composite, it is prepared via a method which to obtain:
(1) preparation of Plant fiber:
According to following parts by weight, take cocoanut fiber 20 parts, sugarcane bagasse 9 parts, pine powder 8 parts, mix homogeneously；
(2) Plant fiber's enzyme modification:
According to following parts by weight, take lignin peroxidase 0.5 part, laccase 0.5 part, polyphenol oxidase 0.3 part, water 100
Part, it is prepared as enzymatic solution；
Mixed plant fiber is put in enzymatic solution according to the ratio of weight ratio 1:30, keeps constant temperature 25 DEG C to process 30min, then
Being warming up to 38 DEG C and process 40min, finally heated to 80 DEG C process 50min；
Modified, use clear water rinsed clean, 60 DEG C of drying；
(3) raw material is blended:
The raw material having configured dried according to following parts by weight: modified plant fibers 38 parts, polylactic acid 120 parts, nano-calcium carbonate
Calcium 0.8 part；
After being melted the most completely by the polylactic acid pellet weighed, it is uniformly added into modified plant fibers, after mix homogeneously, then
Adding other all raw materials, adjustment rotating speed is 30r/min, and then stirring is blended 5min, makes raw material be sufficiently mixed uniformly；
(4) precompressed:
Blend after mill is pressed into the most in advance the thick sheet material of 8mm, standby；
(5) hot-forming:
By above-mentioned precompressed blend preheated 10min on vulcanizing press, pressure release PB 3min repeatedly, remove compound
Bubble in material melt, cools down molding, prepares ageing-resistant polylactic acid wood plastic composite after pressurize 10min.Prepare size
For the composite board of 180mm × 100mm × 1mm, forming temperature is 185 DEG C, and pressure is 12MPa.
Ageing-resistant performance: ultraviolet ageing is according to standard ASTM G154-06, and color kept constant, always in aging 3000 hours
Change 1800 hours degree of crystallinity and keep constant.
Embodiment 2:
A kind of ageing-resistant polylactic acid wood plastic composite, it is prepared via a method which to obtain:
(1) preparation of Plant fiber:
According to following parts by weight, take cocoanut fiber 30 parts, sugarcane bagasse 5 parts, pine powder 12 parts, mix homogeneously；
(2) Plant fiber's enzyme modification:
According to following parts by weight, take lignin peroxidase 0.3 part, laccase 1 part, polyphenol oxidase 0.3 part, 100 parts of water,
It is prepared as enzymatic solution；
Mixed plant fiber is put in enzymatic solution according to the ratio of weight ratio 1:30, keeps constant temperature 25 DEG C to process 30min, then
Being warming up to 38 DEG C and process 30min, finally heated to 80 DEG C process 50min；
Modified, use clear water rinsed clean, 60 DEG C of drying；
(3) raw material is blended:
The raw material having configured dried according to following parts by weight: modified plant fibers 56 parts, polylactic acid 100 parts, nano-calcium carbonate
Calcium 0.8 part；
After being melted the most completely by the polylactic acid pellet weighed, it is uniformly added into modified plant fibers, after mix homogeneously, then
Adding other all raw materials, adjustment rotating speed is 30r/min, and then stirring is blended 6min, makes raw material be sufficiently mixed uniformly；
(4) precompressed:
Blend after mill is pressed into the most in advance the thick sheet material of 8mm, standby；
(5) hot-forming:
By above-mentioned precompressed blend preheated 10min on vulcanizing press, pressure release PB 3min repeatedly, remove compound
Bubble in material melt, cools down molding, prepares ageing-resistant polylactic acid wood plastic composite after pressurize 10min.Prepare size
For the composite board of 180mm × 100mm × 1mm, forming temperature is 185 DEG C, and pressure is 12MPa.
Ageing-resistant performance: ultraviolet ageing is according to standard ASTM G154-06, and color kept constant, always in aging 2000 hours
Change 2600 hours degree of crystallinity and keep constant.
Embodiment 3:
A kind of ageing-resistant polylactic acid wood plastic composite, it is prepared via a method which to obtain:
(1) preparation of Plant fiber:
According to following parts by weight, take cocoanut fiber 21 parts, sugarcane bagasse 8 parts, pine powder 9 parts, mix homogeneously；
(2) Plant fiber's enzyme modification:
According to following parts by weight, take lignin peroxidase 0.4 part, laccase 0.6 part, polyphenol oxidase 0.3 part, water 100
Part, it is prepared as enzymatic solution；
Mixed plant fiber is put in enzymatic solution according to the ratio of weight ratio 1:30, keeps constant temperature 25 DEG C to process 30min, then
Being warming up to 38 DEG C and process 39min, finally heated to 80 DEG C process 50min；
Modified, use clear water rinsed clean, 60 DEG C of drying；
(3) raw material is blended:
The raw material having configured dried according to following parts by weight: modified plant fibers 40 parts, polylactic acid 110 parts, nano-calcium carbonate
Calcium 0.8 part；
After being melted the most completely by the polylactic acid pellet weighed, it is uniformly added into modified plant fibers, after mix homogeneously, then
Adding other all raw materials, adjustment rotating speed is 30r/min, and then stirring is blended 5min, makes raw material be sufficiently mixed uniformly；
(4) precompressed:
Blend after mill is pressed into the most in advance the thick sheet material of 8mm, standby；
(5) hot-forming:
By above-mentioned precompressed blend preheated 10min on vulcanizing press, pressure release PB 3min repeatedly, remove compound
Bubble in material melt, cools down molding, prepares ageing-resistant polylactic acid wood plastic composite after pressurize 10min.Prepare size
For the composite board of 180mm × 100mm × 1mm, forming temperature is 185 DEG C, and pressure is 12MPa.
Ageing-resistant performance: ultraviolet ageing is according to standard ASTM G154-06, and color kept constant, always in aging 2014 hours
Change 2000 hours degree of crystallinity and keep constant.
Embodiment 4:
A kind of ageing-resistant polylactic acid wood plastic composite, it is prepared via a method which to obtain:
(1) preparation of Plant fiber:
According to following parts by weight, take cocoanut fiber 29 parts, sugarcane bagasse 6 parts, pine powder 11 parts, mix homogeneously；
(2) Plant fiber's enzyme modification:
According to following parts by weight, take lignin peroxidase 0.3 part, laccase 0.9 part, polyphenol oxidase 0.3 part, water 100
Part, it is prepared as enzymatic solution；
Mixed plant fiber is put in enzymatic solution according to the ratio of weight ratio 1:30, keeps constant temperature 25 DEG C to process 30min, then
Being warming up to 38 DEG C and process 31min, finally heated to 80 DEG C process 50min；
Modified, use clear water rinsed clean, 60 DEG C of drying；
(3) raw material is blended:
The raw material having configured dried according to following parts by weight: modified plant fibers 55 parts, polylactic acid 105 parts, nano-calcium carbonate
Calcium 0.8 part；
After being melted the most completely by the polylactic acid pellet weighed, it is uniformly added into modified plant fibers, after mix homogeneously, then
Adding other all raw materials, adjustment rotating speed is 30r/min, and then stirring is blended 6min, makes raw material be sufficiently mixed uniformly；
(4) precompressed:
Blend after mill is pressed into the most in advance the thick sheet material of 8mm, standby；
(5) hot-forming:
By above-mentioned precompressed blend preheated 10min on vulcanizing press, pressure release PB 3min repeatedly, remove compound
Bubble in material melt, cools down molding, prepares ageing-resistant polylactic acid wood plastic composite after pressurize 10min.Prepare size
For the composite board of 180mm × 100mm × 1mm, forming temperature is 185 DEG C, and pressure is 12MPa.
Ageing-resistant performance: ultraviolet ageing is according to standard ASTM G154-06, and color kept constant, always in aging 2756 hours
Change 1900 hours degree of crystallinity and keep constant.
Embodiment 5:
A kind of ageing-resistant polylactic acid wood plastic composite, it is prepared via a method which to obtain:
(1) preparation of Plant fiber:
According to following parts by weight, take cocoanut fiber 25 parts, sugarcane bagasse 7 parts, pine powder 10 parts, mix homogeneously；
(2) Plant fiber's enzyme modification:
According to following parts by weight, take lignin peroxidase 0.5 part, laccase 0.7 part, polyphenol oxidase 0.3 part, water 100
Part, it is prepared as enzymatic solution；
Mixed plant fiber is put in enzymatic solution according to the ratio of weight ratio 1:30, keeps constant temperature 25 DEG C to process 30min, then
Being warming up to 38 DEG C and process 35min, finally heated to 80 DEG C process 50min；
Modified, use clear water rinsed clean, 60 DEG C of drying；
(3) raw material is blended:
The raw material having configured dried according to following parts by weight: modified plant fibers 48 parts, polylactic acid 115 parts, nano-calcium carbonate
Calcium 0.8 part；
After being melted the most completely by the polylactic acid pellet weighed, it is uniformly added into modified plant fibers, after mix homogeneously, then
Adding other all raw materials, adjustment rotating speed is 30r/min, and then stirring is blended 5min, makes raw material be sufficiently mixed uniformly；
(4) precompressed:
Blend after mill is pressed into the most in advance the thick sheet material of 8mm, standby；
(5) hot-forming:
By above-mentioned precompressed blend preheated 10min on vulcanizing press, pressure release PB 3min repeatedly, remove compound
Bubble in material melt, cools down molding, prepares ageing-resistant polylactic acid wood plastic composite after pressurize 10min.Prepare size
For the composite board of 180mm × 100mm × 1mm, forming temperature is 185 DEG C, and pressure is 12MPa.
Ageing-resistant performance: ultraviolet ageing is according to standard ASTM G154-06, and color kept constant, always in aging 2344 hours
Change 2300 hours degree of crystallinity and keep constant.
As can be seen here, the invention provides a kind of ageing-resistant polylactic acid wood plastic composite, its raw material is natural, existing well
Biodegradability, there is again good ageing-resistant performance, there is market potential very much.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope that the invention discloses, according to technical scheme and
Inventive concept equivalent or change in addition, all should contain within protection scope of the present invention.
Claims (3)
1. a preparation method for ageing-resistant polylactic acid wood plastic composite, its step is as follows:
(1) preparation of Plant fiber:
Take cocoanut fiber, sugarcane bagasse, pine powder, mix homogeneously；
(2) Plant fiber's enzyme modification:
According to following parts by weight, take lignin peroxidase 0.3-0.5 part, laccase 0.5-1 part, polyphenol oxidase 0.3 part,
100 parts of water, is prepared as enzymatic solution；
Mixed plant fiber is put in enzymatic solution according to the ratio of weight ratio 1:30, keeps constant temperature 25 DEG C to process 30min, then
Being warming up to 38 DEG C and process 30-40min, finally heated to 80 DEG C process 50min；
Modified, use clear water rinsed clean, 60 DEG C of drying；
(3) raw material is blended:
The raw material having configured dried according to following parts by weight: modified plant fibers 38-56 part, polylactic acid 100-120 part, receives
Rice calcium carbonate 0.8 part；
After being melted the most completely by the polylactic acid pellet weighed, it is uniformly added into modified plant fibers, after mix homogeneously, then
Adding other all raw materials, adjustment rotating speed is 30r/min, and then stirring is blended 5-6min, makes raw material be sufficiently mixed uniformly；
(4) precompressed:
Blend after mill is pressed into the most in advance the thick sheet material of 8mm, standby；
(5) hot-forming:
By above-mentioned precompressed blend preheated 10min on vulcanizing press, pressure release PB 3min repeatedly, remove compound
Bubble in material melt, cools down molding, prepares ageing-resistant polylactic acid wood plastic composite after pressurize 10min.
2. the preparation method described in claim 1, it is characterised in that:
Described step (1) is: according to following parts by weight, takes cocoanut fiber 20-30 part, sugarcane bagasse 5-9 part, pine powder 8-12
Part, mix homogeneously.
3. the ageing-resistant polylactic acid wood plastic composite that the preparation method described in claim 1 or 2 obtains.
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| CN201610610778.3A CN106243650B (en) | 2016-07-29 | 2016-07-29 | A kind of ageing-resistant polylactic acid wood plastic composite |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109610034A (en) * | 2018-10-16 | 2019-04-12 | 山东金冠网具有限公司 | A kind of degradable blinding dust-suppression net and preparation method thereof |
| CN111138881A (en) * | 2019-12-28 | 2020-05-12 | 杨永根 | Novel wood board capable of effectively preventing deformation and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2189489A1 (en) * | 2008-11-18 | 2010-05-26 | Kompetenzzentrum Holz GmbH | Lignocellulosic fiberboards made with tannin and phenol-oxidizing enzyme |
| CN101760037A (en) * | 2008-12-23 | 2010-06-30 | 金发科技股份有限公司 | Completely degraded plant powder modified thermoplastics composite material and preparation method thereof |
| CN104963206A (en) * | 2014-12-11 | 2015-10-07 | 华东理工常熟研究院有限公司 | Enzyme modified paper pulp fiber, wood-plastic composite material and preparation method thereof |
-
2016
- 2016-07-29 CN CN201610610778.3A patent/CN106243650B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2189489A1 (en) * | 2008-11-18 | 2010-05-26 | Kompetenzzentrum Holz GmbH | Lignocellulosic fiberboards made with tannin and phenol-oxidizing enzyme |
| CN101760037A (en) * | 2008-12-23 | 2010-06-30 | 金发科技股份有限公司 | Completely degraded plant powder modified thermoplastics composite material and preparation method thereof |
| CN104963206A (en) * | 2014-12-11 | 2015-10-07 | 华东理工常熟研究院有限公司 | Enzyme modified paper pulp fiber, wood-plastic composite material and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109610034A (en) * | 2018-10-16 | 2019-04-12 | 山东金冠网具有限公司 | A kind of degradable blinding dust-suppression net and preparation method thereof |
| CN111138881A (en) * | 2019-12-28 | 2020-05-12 | 杨永根 | Novel wood board capable of effectively preventing deformation and preparation method thereof |
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| CN106243650B (en) | 2018-06-29 |
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