CN105153729A - High-density polyethylene composite and preparation method thereof - Google Patents
High-density polyethylene composite and preparation method thereof Download PDFInfo
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- CN105153729A CN105153729A CN201510679759.1A CN201510679759A CN105153729A CN 105153729 A CN105153729 A CN 105153729A CN 201510679759 A CN201510679759 A CN 201510679759A CN 105153729 A CN105153729 A CN 105153729A
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- density polyethylene
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- 229920001903 high density polyethylene Polymers 0.000 title claims abstract description 62
- 239000004700 high-density polyethylene Substances 0.000 title claims abstract description 62
- 239000002131 composite material Substances 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 55
- 239000002023 wood Substances 0.000 claims abstract description 30
- 229920001912 maleic anhydride grafted polyethylene Polymers 0.000 claims abstract description 22
- 229920001587 Wood-plastic composite Polymers 0.000 claims abstract description 15
- 239000011155 wood-plastic composite Substances 0.000 claims abstract description 15
- 239000004698 Polyethylene Substances 0.000 claims abstract description 9
- 239000012188 paraffin wax Substances 0.000 claims abstract description 9
- -1 polyethylene Polymers 0.000 claims abstract description 9
- 229920000573 polyethylene Polymers 0.000 claims abstract description 9
- 239000001993 wax Substances 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 241000544657 Larix gmelinii Species 0.000 claims description 38
- 239000002994 raw material Substances 0.000 claims description 12
- 238000001125 extrusion Methods 0.000 claims description 11
- 238000005469 granulation Methods 0.000 claims description 6
- 230000003179 granulation Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 241000218652 Larix Species 0.000 abstract description 5
- 235000005590 Larix decidua Nutrition 0.000 abstract description 5
- 239000011159 matrix material Substances 0.000 abstract description 4
- 239000000945 filler Substances 0.000 abstract description 3
- 238000010924 continuous production Methods 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 238000005303 weighing Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 6
- 239000003292 glue Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000000197 pyrolysis Methods 0.000 description 3
- 238000004513 sizing Methods 0.000 description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 241000218653 Larix laricina Species 0.000 description 2
- 235000008119 Larix laricina Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 238000010186 staining Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002916 wood waste Substances 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 229920002770 condensed tannin Polymers 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 235000018192 pine bark supplement Nutrition 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- 235000013824 polyphenols Nutrition 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000001054 red pigment Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920003987 resole Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229920001864 tannin Polymers 0.000 description 1
- 235000018553 tannin Nutrition 0.000 description 1
- 239000001648 tannin Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
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- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a high-density polyethylene composite and a preparation method thereof, belonging to the field of wood-plastic composites. A wood-plastic composite is prepared in a double-screw extruding way by taking larch bark powder partially or completely replacing wood powder as filler and high-density polyethylene as a matrix, so that not only can the production costs of woods and plastics be reduced, but also continuous production is easily realized, and an approach for utilizing the larch bark powder is provided. The composite disclosed by the invention is prepared from the larch bark powder, the wood powder, high-density polyethylene, maleic anhydride grafted polyethylene, paraffin and polyethylene wax. The preparation method comprises the steps of firstly, weighing, stirring at high speed, and mixing; secondly, pouring the mixture into a double-screw extruder to pelletize; and thirdly, smashing, placing the smashed product into a single-screw extruder, and extruding the wood-plastic composite when the temperature of the single-screw extruder reaches to the set temperature and the rotating speed of a single screw is 10r/min. The high-density polyethylene composite is used for preparing floors or guardrails, foot margins and the like.
Description
Technical field
The invention belongs to wood plastic composite field, the some or all of alternative wood powder of Cortex Pini powder manufactures bark of dahurian larch/wood powder/high-density polyethylene composite material.
Background technology
Wood plastic composite obtains as the material of excellent property and develops fast.Timber is as integral part important in wood plastic composite, and the demand of timber is also growing with each passing day.The forest reserves of China are limited, along with the enforcement of China's Natural Forest Protection Project, the supply of timber is reducing year by year, price is in continuous increase, and the production cost of Mu Su manufacturing enterprise is also increasing, so, substitute Wood flour filled thermoplastic resin in whole or in part with wooden or non-wood industrial wood waste and produce wood plastic composite, become ideal chose, be not only enterprise and reduce production cost, also for these industrial wood wastes have found the approach of utilization.
Tamarack is one of seeds that China's accumulation is larger, and sawmill and plywood factory all remain a large amount of barks every year, and except a small amount of for making except tannin extract or tackiness agent weighting material, all the other major parts are all thrown away or burnt.About the utilization of bark of dahurian larch, there is the following aspects:
Wood-based plate aspect.The people such as Wang Ge are used for wood-based plate aspect to bark of dahurian larch and have done preliminary exploratory development.Bi Kexin etc. by the macromolecular material such as bark of dahurian larch and polystyrene composite manufacturing lagging material, and reach the requirement of heat-insulating property, but the add-on of bark of dahurian larch is limited, and it is excessive to add, and can affect the heat-insulating property of material and increase the weight of goods.The people such as Ao Yujia are with urea-formaldehyde glue as sizing agent, and compacting tamarack shaving board, MOR is lower, can not be used as the use of load-bearing.Liu Yinan etc. adopt phenolic resin adhesive, have prepared bark plate of larch.Directly use bark of dahurian larch pressed sheet, mechanical property does not reach actual operation requirements.When adding a certain amount of Timber residuals, adopt phenolic glue pressed sheet, mechanical property just can reach the requirement of relevant criterion product, and cost advantage is just not remarkable.
Glue aspect, Yan Zhen etc., by bark of dahurian larch is carried out pyrolysis, obtain pyrolysis oil, replace phenol to prepare Pyrolytic tar-PF resin sizing agent pyrolysis oil part, but stability are not as resol.The people such as Teng Yuhui, by Larch Bark Powder Modified Phenol-Formaldehyde Resin sizing agent, can reduce glue cost 40%.But because adhesive-preparing technology is too loaded down with trivial details, need perfect further.
Other aspects.The supplementary meanss such as people's ultrasonic wave such as Liu Ye extract the pycnogenols in bark of dahurian larch, and extraction rate reached is to 1.0512%.Bark of dahurian larch is prepared biomass oil absorption material by modified method by the people such as Huang Hurun, and this biological material can reuse.The people such as Du Xiao extract bark of dahurian larch with aqueous ethanol, have prepared alcohol soluble red pigment, have higher physicochemical stability and tint permanence well.Can waste residue be produced after but bark of dahurian larch has been extracted effective constituent, can not make full use of.
Bark of dahurian larch is used for wood plastic composite and is not yet seen in report especially for the research of extrusion wood plastic composite.
Summary of the invention
Bark of dahurian larch powder is partly or entirely substituted wood powder as filler by the present invention, take high density polyethylene(HDPE) as matrix, wood plastic composite is prepared by twin-screw extrusion mode, not only can reduce wood mould manufacturing cost but also be easy to realize continuous seepage, the utilization for bark of dahurian larch powder provides a kind of approach.
In the present invention, a kind of high-density polyethylene composite material is by bark of dahurian larch powder, wood powder, high density polyethylene(HDPE) (HDPE), maleic anhydride grafted polyethylene (MAPE), paraffin and polyethylene wax are made, wherein every 100 raw material are by 60 ~ 10 parts of bark of dahurian larch powder, 0 ~ 50 part of wood powder, 36 parts of high density polyethylene(HDPE)s (HDPE), 4 parts of maleic anhydride grafted polyethylene (MAPE) compositions, paraffin accounts for bark of dahurian larch powder, wood powder, 1% of high density polyethylene(HDPE) and maleic anhydride grafted polyethylene gross weight, polyethylene wax accounts for bark of dahurian larch powder, wood powder, 1% of high density polyethylene(HDPE) and maleic anhydride grafted polyethylene gross weight, its preparation method carries out in the steps below:
Step one, take bark of dahurian larch powder, wood powder, high density polyethylene(HDPE) (HDPE), maleic anhydride grafted polyethylene (MAPE), paraffin and polyethylene wax respectively after pour in high-speed mixer, high-speed mixing 3 minutes (raw material is mixed) at temperature is 86 DEG C;
Step 2, then pour granulation in twin screw extruder into;
After step 3, granulation are complete, pulverize, be then placed in single screw extrusion machine after cooling, when single screw extrusion machine arrives the temperature of setting, singe screw rotating speed is 10r/min, extrudes wood plastic composite.
Step 2 prilling temperature sets 7 humidity provinces, and the temperature in 1 district of district to 7 is respectively 145 DEG C, 150 DEG C, 160 DEG C, 168 DEG C, 168 DEG C, 160 DEG C, 150 DEG C, rate of feeding 12 revs/min, twin screw rotating speed 60 revs/min
The temperature of step 3 single screw extrusion machine is set as: 1st district: 145 DEG C, 2nd district: 155 DEG C, 3rd district: 168 DEG C, 4th district: 168 DEG C; Head temperature: 5th district (on): 165 DEG C, 6th district (left side): 165 DEG C, 7th district (under): 165 DEG C, 8th district (right side): 165 DEG C (5,6,7 and 8 districts are all head temperatures).
Use in the present invention paraffin and polyethylene wax increase melt in an extruder lubrication increase the water-repellancy of material simultaneously.
Bark of dahurian larch powder is partly or entirely substituted wood powder as filler by the present invention, and the high-density polyethylene composite material obtaining the mechanical property of product and wood powder is close.
The present invention uses discarded bark of dahurian larch for raw material, turns waste into wealth, is greatly reduced by cost simultaneously; The commercially available price of wood powder is approximately 1000 yuan/ton, and the commercially available price of bark of dahurian larch powder is approximately 700 yuan/ton.
The color of wood plastic composite is more single, needs by adding the staining agent such as iron oxide red or carbon black and make it demonstrate redness or black presenting decorative effect.Bark of dahurian larch powder itself takes on a red color, and employs bark of dahurian larch powder in raw material of the present invention, and after pyroprocess process in expressing technique, high-density polyethylene composite material color is close to the even darker color of rust.Because not using staining agent, therefore cost reduction also add decorative effect simultaneously.
Preparation method of the present invention has easy and simple to handle, and product easy-formation, has continuous prodution, the higher advantage of efficiency.
Embodiment
Embodiment one: the preparation method of present embodiment medium high density polyethylene matrix material carries out in the steps below:
Step one, take bark of dahurian larch powder, wood powder, high density polyethylene(HDPE) (HDPE), maleic anhydride grafted polyethylene (MAPE), paraffin and polyethylene wax respectively after pour in high-speed mixer, high-speed mixing 3 minutes at temperature is 86 DEG C;
Step 2, then pour granulation in twin screw extruder into;
After step 3, granulation are complete, after the grain cooling of having made, in pulverizer, powder becomes small-particle again, is then placed in single screw extrusion machine, and when single screw extrusion machine arrives the temperature of setting, singe screw rotating speed is 10r/min, extrudes wood plastic composite.
Formula is in table 1:
Table 1 composite-material formula (weight part)
Step 2 prilling temperature section is set as follows:
Twin screw rotating speed is: 60r/min
Rate of feeding is: 12r/min
The temperature of step 3 single screw extrusion machine is set as: 1st district: 145 DEG C, 2nd district: 155 DEG C, 3rd district: 168 DEG C, 4th district: 168 DEG C, head temperature: 5th district (on): 165 DEG C, 6th district (left side): 165 DEG C, 7th district (under): 165 DEG C, 8th district (right side): 165 DEG C.
Composite materials property comparison, in table 2:
Table 2 is formula mechanical property table respectively:
| Formula number | Bending strength | Shock strength | Tensile strength | Modulus in flexure |
| 1# | 68.04Mpa | 5.86KJ/㎡ | 45.69Mpa | 4.40Mpa |
| 2# | 65.58Mpa | 5.23KJ/㎡ | 45.04Mpa | 4.40Mpa |
| 3# | 61.04Mpa | 4.83KJ/㎡ | 41.21Mpa | 3.95Mpa |
| 4# | 56.14Mpa | 3.77KJ/㎡ | 37.69Mpa | 3.65Mpa |
| 5# | 52.33Mpa | 3.65KJ/㎡ | 34.12Mpa | 3.35Mpa |
| 6# | 48.62Mpa | 3.61KJ/㎡ | 30.85Mpa | 2.89Mpa |
| 7# | 44.41Mpa | 3.28KJ/㎡ | 27.35Mpa | 2.60Mpa |
Table 1 is the ratio of each raw material of matrix material, and formula 1 is comparison formula (not adding bark of dahurian larch powder), formula 2,3,4, in 5, wood powder is by after bark of dahurian larch powder Some substitute, material mechanical performance meets the requirement of load-bearing class wood plastic composite substantially, such as floor or guardrail.Formula 6,7 mechanical properties are relatively low, can be used for doing baseboard, excellent decoration effect.
Claims (10)
1. a high-density polyethylene composite material, it is characterized in that a kind of high-density polyethylene composite material is by bark of dahurian larch powder, wood powder, high density polyethylene(HDPE), maleic anhydride grafted polyethylene, paraffin and polyethylene wax are made, wherein every 100 raw material are by 60 ~ 10 parts of bark of dahurian larch powder, 0 ~ 50 part of wood powder, 36 parts of high density polyethylene(HDPE)s, 4 parts of maleic anhydride grafted polyethylene compositions, paraffin accounts for bark of dahurian larch powder, wood powder, 1% of high density polyethylene(HDPE) and maleic anhydride grafted polyethylene gross weight, polyethylene wax accounts for bark of dahurian larch powder, wood powder, 1% of high density polyethylene(HDPE) and maleic anhydride grafted polyethylene gross weight.
2. a kind of high-density polyethylene composite material according to claim 1, is characterized in that every 100 raw material are made up of 10 parts of bark of dahurian larch powder, 50 parts of wood powders, 36 parts of high density polyethylene(HDPE)s, 4 parts of maleic anhydride grafted polyethylenes.
3. a kind of high-density polyethylene composite material according to claim 1, is characterized in that every 100 raw material are made up of 20 parts of bark of dahurian larch powder, 40 parts of wood powders, 36 parts of high density polyethylene(HDPE)s, 4 parts of maleic anhydride grafted polyethylenes.
4. a kind of high-density polyethylene composite material according to claim 1, is characterized in that every 100 raw material are made up of 30 parts of bark of dahurian larch powder, 30 parts of wood powders, 36 parts of high density polyethylene(HDPE)s, 4 parts of maleic anhydride grafted polyethylenes.
5. a kind of high-density polyethylene composite material according to claim 1, is characterized in that every 100 raw material are made up of 40 parts of bark of dahurian larch powder, 20 parts of wood powders, 36 parts of high density polyethylene(HDPE)s, 4 parts of maleic anhydride grafted polyethylenes.
6. a kind of high-density polyethylene composite material according to claim 1, is characterized in that every 100 raw material are made up of 50 parts of bark of dahurian larch powder, 10 parts of wood powders, 36 parts of high density polyethylene(HDPE)s, 4 parts of maleic anhydride grafted polyethylenes.
7. a kind of high-density polyethylene composite material according to claim 1, is characterized in that every 100 raw material are made up of 60 parts of bark of dahurian larch powder, 36 parts of high density polyethylene(HDPE)s, 4 parts of maleic anhydride grafted polyethylenes.
8., as the preparation method of a kind of high-density polyethylene composite material as described in any one claim in claim 1-7, it is characterized in that aforesaid preparation method carries out in the steps below:
Step one, take bark of dahurian larch powder, wood powder, high density polyethylene(HDPE), maleic anhydride grafted polyethylene, paraffin and polyethylene wax respectively after pour in high-speed mixer, high-speed mixing 3 minutes at temperature is 86 DEG C;
Step 2, then pour granulation in twin screw extruder into;
After step 3, granulation are complete, pulverize, be then placed in single screw extrusion machine after cooling, when single screw extrusion machine arrives the temperature of setting, singe screw rotating speed is 10rpm, extrudes wood plastic composite.
9. the preparation method of a kind of high-density polyethylene composite material as claimed in claim 8, it is characterized in that step 2 prilling temperature sets 7 humidity provinces, the temperature in 1 district of district to 7 is respectively 145 DEG C, 150 DEG C, 160 DEG C, 168 DEG C, 168 DEG C, 160 DEG C, 150 DEG C, rate of feeding 12 revs/min, twin screw rotating speed 60 revs/min.
10. the preparation method of a kind of high-density polyethylene composite material as claimed in claim 8, it is characterized in that the temperature of step 3 single screw extrusion machine is set as: 1st district: 145 DEG C, 2nd district: 155 DEG C, 3rd district: 168 DEG C, 4th district: 168 DEG C, head temperature: in 5th district: 165 DEG C, 6th district are left: 165 DEG C, under 7th district: 165 DEG C, 8th district are right: 165 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510679759.1A CN105153729A (en) | 2015-10-19 | 2015-10-19 | High-density polyethylene composite and preparation method thereof |
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| CN201510679759.1A CN105153729A (en) | 2015-10-19 | 2015-10-19 | High-density polyethylene composite and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108912709A (en) * | 2018-05-14 | 2018-11-30 | 广西民族大学 | A kind of polyethylene/Eucalyptus powder composite material and preparation method thereof |
| CN109206713A (en) * | 2018-08-30 | 2019-01-15 | 天津职业技术师范大学 | A kind of preparation method and application of the Recycled HDPE composite material containing Poplar Powder |
| CN116606492A (en) * | 2023-05-22 | 2023-08-18 | 华南农业大学 | Litchi wood/resin composite material, preparation method and profile |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108912709A (en) * | 2018-05-14 | 2018-11-30 | 广西民族大学 | A kind of polyethylene/Eucalyptus powder composite material and preparation method thereof |
| CN109206713A (en) * | 2018-08-30 | 2019-01-15 | 天津职业技术师范大学 | A kind of preparation method and application of the Recycled HDPE composite material containing Poplar Powder |
| CN116606492A (en) * | 2023-05-22 | 2023-08-18 | 华南农业大学 | Litchi wood/resin composite material, preparation method and profile |
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Application publication date: 20151216 |