CN1257890A - Moulding material of wood powder reinforced polypropylene and its preparing method - Google Patents
Moulding material of wood powder reinforced polypropylene and its preparing method Download PDFInfo
- Publication number
- CN1257890A CN1257890A CN 99117293 CN99117293A CN1257890A CN 1257890 A CN1257890 A CN 1257890A CN 99117293 CN99117293 CN 99117293 CN 99117293 A CN99117293 A CN 99117293A CN 1257890 A CN1257890 A CN 1257890A
- Authority
- CN
- China
- Prior art keywords
- wood powder
- parts
- forcing machine
- coupling agent
- polypropylene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000843 powder Substances 0.000 title claims abstract description 64
- 239000002023 wood Substances 0.000 title claims abstract description 63
- -1 polypropylene Polymers 0.000 title claims abstract description 37
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 30
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 30
- 239000000463 material Substances 0.000 title claims abstract description 19
- 238000000465 moulding Methods 0.000 title claims description 13
- 238000000034 method Methods 0.000 title claims description 9
- 239000007822 coupling agent Substances 0.000 claims abstract description 22
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 239000000206 moulding compound Substances 0.000 claims description 20
- 239000006057 Non-nutritive feed additive Substances 0.000 claims description 11
- 229920000178 Acrylic resin Polymers 0.000 claims description 9
- 239000004925 Acrylic resin Substances 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 239000004698 Polyethylene Substances 0.000 claims description 8
- 229920000573 polyethylene Polymers 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000005453 pelletization Methods 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000004709 Chlorinated polyethylene Substances 0.000 claims description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical group C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 2
- 125000003647 acryloyl group Chemical group O=C([*])C([H])=C([H])[H] 0.000 claims description 2
- 150000008064 anhydrides Chemical class 0.000 claims description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 2
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000000178 monomer Substances 0.000 claims description 2
- 150000007524 organic acids Chemical class 0.000 claims description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 2
- 229920005653 propylene-ethylene copolymer Polymers 0.000 claims description 2
- 238000010298 pulverizing process Methods 0.000 claims description 2
- 238000012546 transfer Methods 0.000 claims description 2
- 238000003754 machining Methods 0.000 abstract 1
- 230000035939 shock Effects 0.000 description 10
- 239000011347 resin Substances 0.000 description 9
- 229920005989 resin Polymers 0.000 description 9
- 239000000945 filler Substances 0.000 description 8
- 238000001746 injection moulding Methods 0.000 description 7
- 239000002253 acid Substances 0.000 description 4
- 239000012752 auxiliary agent Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 239000004594 Masterbatch (MB) Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A wood powder reinforced polypropylene mouding material is prepared from polypropylene, wood powder, macro-molecular coupling agent and assistant through dual-screw extruding out. Its advantages are high tension modulus, tension strength and impact strength increased respectively by 100-180%, 16-38% and 15%, and better machining performance. It can be shaped by injection or die press.
Description
The present invention relates to a kind of moulding material of wood powder reinforced polypropylene (or claiming the polypropylene/wood powder moulding compound) and preparation method thereof.
Wood powder is a kind of material cheap and easy to get, and the filler as plastics comes into one's own.For a long time, wood powder is widely used in the thermosetting resin such as phenolaldehyde moulding compound, as reducing cost and adjusting mobile filler.Existing in recent years report is used as the filler of thermoplastics with wood powder, but mainly is to use as a kind of increment filler, and the enhancing potentiality end of wood powder can obtain excavating and embodying.
The purpose of this invention is to provide a kind of moulding material of wood powder reinforced polypropylene that can demonstrate fully Mierocrystalline cellulose enhancing ability in the wood powder and preparation method thereof.
Measure of the present invention is by rationally selecting the macromole auxiliary agent for use, utilize the action of coupling agents of these auxiliary agents, promptly promote wood powder and the cohesive action of polyolefine interface, and the macromole auxiliary agent promotes fillers dispersed and the effect of the energy that improves liquidity, and prepares and demonstrates fully this powder Reinforced Polypropylene moulding compound with excellent mechanical performances and over-all properties that wood powder strengthens ability.
Wood powder of the present invention strengthens the poly-third poly-moulding compound and is made up of 100 parts (by weight, as follows) poly-third poly-resin, 1～15 part of macromolecular coupling agent, 5～130 parts of wood powders.One-tenth commonly used is grouped into by weight and is: 100 parts of acrylic resins, 30～90 parts of wood powders, macromolecular coupling agent is 2～5% of a wood powder amount.Used macromolecular coupling agent is to be selected from the multipolymer of ethene or propylene and acryloyl class monomer, maleic anhydride or toxilic acid (its molecular weight is 2000～100000, acid number is 15～67), and in organic acid or the anhydride modified polyolefine one or more; When using more than one, can be arbitrary proportion between them.
The used acrylic resin of the present invention is preferably the alfon or the propylene-ethylene copolymers of injection stage or extrusion grade, can be new resin or the resin that reclaims from the waste and old polypropylene goods.Used wood powder can be 80, the 100 or 120 order wood powders that use in the existing phenolaldehyde moulding compound, also can be 20,40,60,80, the 100 order wood powders that general wood shavings (as the sawdust that reclaims from Furniture Factory) obtains after screening.
(commonly used is 2～5 parts can also to increase by 0.5～15 part during the one-tenth of the invention described above moulding compound is grouped into again, processing aid by weight), disperseing and improve liquidity with further promotion filler (wood powder) can, make product have the better processability energy, with the method moulding of injection moulding and mold pressing, obtain outward appearance and well behaved goods easily.Used processing aid is to be selected from polyethylene wax, chlorinatedpolyethylene, oxidic polyethylene, its chlorinated polypropylene, the clorafin one or more; When using more than one, can be arbitrary proportion between them.
The preparation method of the moulding material of wood powder reinforced polypropylene of the invention described above comprises that the following step poly-:
(1), exsiccant polypropylene, wood powder, macromolecular coupling agent and processing aid are mixed into the dried thing that mixes by required proportioning; Can adopt high-speed mixer, kneader or ribbon mixer, or manual mixing at normal temperatures;
(2), do to mix the batch hopper that thing adds twin screw extruder, carry to the charging opening metering of forcing machine, transfer rate is not more than the Solid Conveying and Melting speed of forcing machine transportation section with above-mentioned;
(3), the material that enters forcing machine through a solid conveying section, one or more compression section, one or more mixing section, finally be that 3～15 metering zone and compression ratio are not less than a mouth mould of 2 and leave forcing machine through a length-to-diameter ratio;
That is to say that it is 3～15 metering zone that used forcing machine has a solid conveying section, one or more compression section, one or more mixing section, length-to-diameter ratio, its mouthful mould compression ratio is not less than 2;
(4), the material that comes out from forcing machine with air or water cooling to it below softening temperature, pelletizing or pulverizing, classification then, drying promptly get required moulding material of wood powder reinforced polypropylene.
Generally.The length-to-diameter ratio of the forcing machine that the invention described above method is used is 25～45, and forcing machine charging opening temperature is 80～220 ℃, and screw speed is 20～300 rev/mins, and head temperature is 150～260 ℃, and vacuum port pressure is that 8kPa is to normal pressure.
In the aforesaid method, the said proportioning components of mixing thing of doing is generally by weight: 100 parts of the poly-third poly-resins, 1～15 part of macromole coupling connection agent, 0～15 part of processing aid, 5～130 parts of wood powders.
According to the moulding material of wood powder reinforced polypropylene that mentioned component of the present invention is formed and method prepares, its melt flow rate (MFR) is 0.8～22g/10min, make standard test specimen or be injection molded into area through injection molding and be not less than 120cm
2, thickness is 3.2 or the plate-shaped products of 6mm, again with car, method such as mill and be processed into sample, the performance that records according to the ASTM standard is: tensile modulus E=1.5～3.0GPa; Tensile strength σ=18～38MPa; Izod notched Izod impact strength S
I=20～90J/m (23 ℃); Under the room temperature under 1.38m/s and the plane strain condition energy-to-break rate of release be G
c=1.5～2.5kJ/m
2, fracture toughness is K
α=0.9～2.7MPa
According to the present invention, generally speaking, fill wood powder material modulus is increased.Because the use of macromolecular coupling agent makes tensile strength and shock strength that considerable increase all be arranged, it is identical but do not contain the moulding material of wood powder reinforced polypropylene of coupling agent that fracture toughness can double wood powder content usually; If do not use macromolecular coupling agent, tensile strength increases and significantly reduces along with wood powder content, and shock strength also descends to some extent.When using identical resin and wood powder content constant substantially, in coupling agent amount ranges involved in the present invention, tensile modulus and shock resistance all increase with macromolecular coupling agent content.In addition, in the scope that the present invention relates to, modulus, tensile strength, shock strength and Gc and Kc all increase and increase along with the filler particles length-to-diameter ratio, meet the universal law of fibre composite.
Fig. 1 is by tensile modulus, tensile strength and the shock strength of the moulding material of wood powder reinforced polypropylene of the embodiment of the invention 4 preparation dependent synoptic diagram to wood powder content, illustrates that whether macromolecular coupling agent (propylene-copolymer-maleic anhydride) exists the wood powder reinforced polypropylene Effect on Performance under the various filler contents.Wherein (a) is for containing the situation of macromolecular coupling agent, (b) for not containing the situation of macromolecular coupling agent; E
r, σ
rAnd S
I, r represents the ratio of tensile modulus, tensile strength and the shock strength of wood powder/polypropylene system and corresponding matrix resin respectively.From Fig. 1 as seen, when wood powder content have more practical significance 20% and when above, the existence of propylene-copolymer-maleic anhydride makes the tensile modulus of wood powder/acrylic plastering be higher than the plastics that do not contain this coupling component.Fig. 1 shows that also whether the use of propylene-copolymer-maleic anhydride component to be, and is more outstanding to the influence of tensile strength and shock strength: when not using this auxiliary agent, and σ
r, S
I, r all increases with wood powder content and descends, and the decline of static tensile strength is very remarkable; But the wood powder/acrylic plastering that comprises propylene-copolymer-maleic anhydride, σ
r, S
I, r increases with wood powder content, has demonstrated fully this coupling component to improving the effect of wood powder enhancing efficient.
The invention will be further described by the following examples.Component content among each embodiment is all by weight calculating.
Embodiment 1
100 parts of the extrusion grade acrylic resins (melt flow rate (MFR) 1.8g/10min) that drying is crossed, 25 parts of the 100 order wood powders, the propylene-copolymer-maleic anhydride (acid number 47 that are used for phenolaldehyde moulding compound, molecular weight is near 10,000) 2.5 parts be made into to do and mix thing, with Φ 34mm parallel dual-screw extruding machine, by water cooling traction pelletizing and drying, become injection molding pellet.The twin screw extruder length-to-diameter ratio is 42, and operational condition is 150 ℃ of charging opening temperature, and head temperature is 190 ℃, 160 rev/mins of engine speeds, and pressure is 20kPa between metering zone and last mixing section.This polypropylene/wood powder molded pellets is made the ASTM standard test specimen respectively and is of a size of 80 * 160 * 6mm through injection molding
3, 80 * 200 * 3mm
3Two kinds of plates, it is brown that goods are, any surface finish does not have macroscopic skin-cored structure.The performance index that record according to ASTM are: E=2.19 ± 0.17GPa; σ=30.39 ± 0.04MPa, S
I=80.76 ± 0.31J/m.Compare when being zero with propylene-copolymer-maleic anhydride content, the modulus no change, tensile strength and shock strength have increased 23% and 42% respectively.
Embodiment 2
10 parts of propylene-copolymer-maleic anhydride content, all the other are identical with embodiment 1, and outward appearance is similar to the product among the embodiment 1, and modulus, tensile strength, shock strength increase 23%, 31%, 56% respectively with respect to no propylene-copolymer-maleic anhydride system.
Embodiment 3
According to embodiment 1, dried mixing in the thing additionally contains 2.5 parts of polyethylene waxs, and it is yellow that moulding compound that obtains and injection-molded item are, and character approaches embodiment 1.
Embodiment 4
According to implementing 3, replace propylene-copolymer-maleic anhydride with ethylene-acrylic acid copolymer (acid number 30, molecular weight about 14000), product property and outward appearance are close with embodiment 3, and the surface is more glossy.
Embodiment 5
100 parts of dried injection grade acrylic resins (melt flow rate (MFR) 8.2g/10min), 120 parts of the 20 order wood powders that obtain from the screening of furniture factory sawdust, propylene-copolymer-maleic anhydride in the precedent (acid number 47, molecular weight is near 10,000) 10 parts, later expect (powder) 10 parts, according to embodiment 1 similar methods compounding, extrude, extrudate with air cooling after pelletizing, be used for injection moulding after crossing 8 mesh sieves, screenings drops into to do as material metering later and mixes in the raw material.Can allocate the acrylic resin of different ratios during injection moulding into, make that the wood powder weight content is 5～40% in the end article.So the moulding compound of configuration is easy to injection moulding under common polypropylene condition of molding, and 3.2mm that obtains and 6mm plate are brownish black, surfacing.The wood powder weight content was not less than 20% o'clock, machinery as worker's character near timber.After resin properties normalization method, the tensile modulus of this polypropylene/wood powder moulding compound, tensile strength and shock strength to the dependency of wood powder content shown in Fig. 1 (a); Result when coupling agent content is zero is shown in Fig. 1 (b).
Embodiment 6 is according to embodiment 4, and dried mixing additionally contains totally 10 parts of processing aids (each 5 parts of polyethylene wax, clorafins) in the thing, and moulding compound that obtains and injection-molded item are pale brown look, the whole and glossy mechanical workout that is easy to of injection-molded item outward appearance.The wood powder weight content is 40% this polypropylene/wood powder moulding compound, and its character is: melt flow rate (MFR) 2.2g/10min; Tensile modulus 2.9GPa; Tensile strength 37MPa; Elongation at break 4%; Izod notched Izod impact strength S
I=23.3J/m.
Embodiment 7
According to implementing 1, but do to mix additionally to contain in the thing and reclaim 100 parts of polypropylene, totally 10 parts of processing aids (3 parts of polyethylene waxs, 3 parts of oxidic polyethylenes, 4 parts of chlorinatedpolyethylenees), wood powder content is 200 parts, coupling agent propylene-copolymer-maleic anhydride content is 10 parts, the moulding compound masterbatch melt flow rate (MFR) 1.0g/10min that obtains.With addition of an amount of injection grade resin, making the wood powder weight content is 40%, and at typical polypropylene injecting condition compacted under, injection-molded item is pale brown look, and injection-molded item flat appearance and glossy is easy to mechanical workout.This polypropylene/wood powder moulding compound, its character is: tensile modulus 2.9GPa; Tensile strength 37MPa; Elongation at break 4%; Izod notched Izod impact strength S
I=23.3J/m.
Embodiment 8
According to embodiment 7, wherein contained recovery polypropylene is 200 parts, and wood powder is 300 parts, and coupling agent is 15 parts, and the moulding compound masterbatch melt flow rate (MFR) that obtains is 2.2g/10min.Other is identical with embodiment 7.
Claims (8)
1, a kind of moulding material of wood powder reinforced polypropylene is characterized in that being grouped into and comprising by weight its one-tenth: 100 parts of acrylic resins, 1～15 part of macromolecular coupling agent, 5～130 parts of wood powders; Said macromolecular coupling agent is the multipolymer that is selected from ethene or propylene and acryloyl class monomer, maleic anhydride or toxilic acid, and in organic acid or the anhydride modified polyolefine one or more.
2, according to the described moulding compound of claim 1, it is characterized in that being grouped into and comprising by weight its one-tenth: 100 parts of acrylic resins, 30～90 parts of wood powders, macromolecular coupling agent are 2～5% of wood powder amount.
3,, it is characterized in that alfon or the propylene-ethylene copolymers of said acrylic resin for injection or extrusion grade according to claim 1 or 2 described moulding compounds.
4, according to claim 1 or 2 described moulding compounds, also contain 0.5～15 part of processing aid in it is characterized in that becoming to be grouped into by weight, this processing aid is to be selected from polyethylene wax, chlorinatedpolyethylene, oxidic polyethylene, its chlorinated polypropylene, the clorafin one or more.
According to the described moulding compound of claim 4, it is characterized in that by weight that 5, the processing aid that contains in becoming to be grouped into is 2～5 parts.
6, a kind of preparation method of moulding material of wood powder reinforced polypropylene, it goes on foot to gather and is:
(1), exsiccant polypropylene, wood powder, macromolecular coupling agent and processing aid are mixed into the dried thing that mixes by required proportioning;
(2), do to mix the batch hopper that thing adds twin screw extruder, carry to the charging opening metering of forcing machine, transfer rate is not more than the Solid Conveying and Melting speed of forcing machine transportation section with above-mentioned;
(3), the material that enters forcing machine through a solid conveying section, one or more compression section, one or more mixing section, finally be that 3～15 metering zone and compression ratio are not less than a mouth mould of 2 and leave forcing machine through a length-to-diameter ratio;
(4), the material that leaves forcing machine with air or water cooling to it below softening temperature, pelletizing or pulverizing, classification then, drying promptly get required moulding compound.
7, in accordance with the method for claim 4, the length-to-diameter ratio that it is characterized in that used forcing machine is 25～45, and forcing machine charging opening temperature is 80～220 ℃, and screw speed is 20～300 rev/mins, head temperature is 150～260 ℃, and vacuum port pressure is that 8kPa is to normal pressure.
8,, it is characterized in that the said composition proportion of mixing thing of doing is by weight: 100 parts of acrylic resins, 1～15 part of macromolecular coupling agent, 0～15 part of processing aid, 5～130 parts of wood powders according to claim 4 or 5 described methods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99117293 CN1257890A (en) | 1999-12-17 | 1999-12-17 | Moulding material of wood powder reinforced polypropylene and its preparing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99117293 CN1257890A (en) | 1999-12-17 | 1999-12-17 | Moulding material of wood powder reinforced polypropylene and its preparing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1257890A true CN1257890A (en) | 2000-06-28 |
Family
ID=5279929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99117293 Pending CN1257890A (en) | 1999-12-17 | 1999-12-17 | Moulding material of wood powder reinforced polypropylene and its preparing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1257890A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002010272A1 (en) * | 2000-07-31 | 2002-02-07 | Commonwealth Scientific And Industrial Research Organisation | Cellulose reinforced composite composition |
| CN1309751C (en) * | 2003-11-28 | 2007-04-11 | 中国石油天然气股份有限公司 | Preparation method and application of modified coupling agent |
| CN1823130B (en) * | 2003-06-11 | 2010-06-09 | 3M创新有限公司 | Compositions and method for improving the processing of polymer composites |
| US8236874B2 (en) | 2003-06-11 | 2012-08-07 | 3M Innovative Properties Company | Compositions and method for improving the processing of polymer composites |
| CN101747639B (en) * | 2008-12-12 | 2012-12-12 | 比亚迪股份有限公司 | Wood plastic composite composition, wood plastic composite and preparation method thereof |
| CN103275399A (en) * | 2013-06-21 | 2013-09-04 | 苏州新区特氟龙塑料制品厂 | Low-cost transparent plastic |
| US8557898B2 (en) | 2008-02-29 | 2013-10-15 | Adeka Corporation | Woody synthetic resin composition having improved weather resistance and molded body thereof |
| CN108752737A (en) * | 2018-05-18 | 2018-11-06 | 浙江谷之源生物科技有限公司 | Fire-retardant biomass PP composite material of novel toughening and preparation method thereof |
| CN112873443A (en) * | 2021-01-28 | 2021-06-01 | 南京林业大学 | Method for preparing plywood by adopting waste medical mask and plywood |
-
1999
- 1999-12-17 CN CN 99117293 patent/CN1257890A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002010272A1 (en) * | 2000-07-31 | 2002-02-07 | Commonwealth Scientific And Industrial Research Organisation | Cellulose reinforced composite composition |
| CN1823130B (en) * | 2003-06-11 | 2010-06-09 | 3M创新有限公司 | Compositions and method for improving the processing of polymer composites |
| US8236874B2 (en) | 2003-06-11 | 2012-08-07 | 3M Innovative Properties Company | Compositions and method for improving the processing of polymer composites |
| CN1309751C (en) * | 2003-11-28 | 2007-04-11 | 中国石油天然气股份有限公司 | Preparation method and application of modified coupling agent |
| US8557898B2 (en) | 2008-02-29 | 2013-10-15 | Adeka Corporation | Woody synthetic resin composition having improved weather resistance and molded body thereof |
| CN101959962B (en) * | 2008-02-29 | 2014-11-05 | 株式会社Adeka | Woody synthetic resin composition having improved weather resistance and molded body thereof |
| CN101747639B (en) * | 2008-12-12 | 2012-12-12 | 比亚迪股份有限公司 | Wood plastic composite composition, wood plastic composite and preparation method thereof |
| CN103275399A (en) * | 2013-06-21 | 2013-09-04 | 苏州新区特氟龙塑料制品厂 | Low-cost transparent plastic |
| CN108752737A (en) * | 2018-05-18 | 2018-11-06 | 浙江谷之源生物科技有限公司 | Fire-retardant biomass PP composite material of novel toughening and preparation method thereof |
| CN112873443A (en) * | 2021-01-28 | 2021-06-01 | 南京林业大学 | Method for preparing plywood by adopting waste medical mask and plywood |
| CN112873443B (en) * | 2021-01-28 | 2022-06-28 | 南京林业大学 | Method for preparing plywood by adopting waste medical mask and plywood |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8546470B2 (en) | Cellulosic inclusion thermoplastic composition and molding thereof | |
| EP0319589B1 (en) | Thermoplastic composite material reinforced with hemp fibers | |
| CN100463939C (en) | Wood plastic micro foaming composite material and its processing shaping method | |
| US5194461A (en) | Structural materials from recycled high density polyethylene and herbaceous fibers, and method for production | |
| US5264174A (en) | Process for producing compositely reinforced polypropylene resin composition | |
| US20030125399A1 (en) | Composite plastic materials produced from waste materials and method of producing same | |
| CN1688428A (en) | Articles comprising a fiber-reinforced thermoplastic polymer composition | |
| CN106515156A (en) | Extruded sandwich structure wood-plastic composite material and manufacturing method thereof | |
| CN102174270A (en) | Plasticized and toughened wood flour/polypropylene composite and method for preparing same | |
| CN106967250B (en) | Composition of long fiber reinforced thermoplastic molding material and use method thereof | |
| CN102604404A (en) | Wood powder filled polypropylene and polyethylene composite material and preparation method for same | |
| CN1257890A (en) | Moulding material of wood powder reinforced polypropylene and its preparing method | |
| US4288570A (en) | Thermoplastic compositions of epichlorohydrin rubber and poly(alkyl methacrylate) resin | |
| KR20210096363A (en) | Method for manufacturing waste plastic recycled molding with excellent hardness and strength | |
| EP0566149B1 (en) | Molding composite composition and method for preparing the same | |
| CN106515150A (en) | Hot-pressed wood-plastic composite with sandwich structure and manufacturing method thereof | |
| KR101187193B1 (en) | Recycled polypropylene material with improved impact strength and thermoplastic molded article comprising the same. | |
| US3773705A (en) | Thermoplastic moulding compositions reinforced with a mixture of glass and asbestos fibers | |
| CN114605849B (en) | Manufacturing method of wood-plastic granules and composite material with ultrahigh wood fiber content | |
| KR0139884B1 (en) | Waste-crosslink-polyethylene resin composition | |
| DE4139257A1 (en) | Recycled plastic moulding material - contains recycled polyolefin or polystyrene, recycled fibre-reinforced thermoset and opt. acid or ester gp.-contg. ethylene@] copolymer etc. | |
| CN102391396B (en) | Interfacial compatilizer, preparation method of interfacial compatilizer and application method of interfacial compatilizer to wood plastic composite | |
| Zaini et al. | Application of oil palm wood flour as fillers in polypropylene | |
| CN1613904A (en) | Plant fibre-polypropylene composite material and preparation thereof | |
| CN114395195B (en) | Low-odor good-appearance polypropylene material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |