CN103360775A - PE wood plastic composite and processing and forming methods thereof - Google Patents
PE wood plastic composite and processing and forming methods thereof Download PDFInfo
- Publication number
- CN103360775A CN103360775A CN2013103210007A CN201310321000A CN103360775A CN 103360775 A CN103360775 A CN 103360775A CN 2013103210007 A CN2013103210007 A CN 2013103210007A CN 201310321000 A CN201310321000 A CN 201310321000A CN 103360775 A CN103360775 A CN 103360775A
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- CN
- China
- Prior art keywords
- wood plastic
- plastic composite
- lubricant
- vegetable fibre
- aging agent
- 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.)
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Classifications
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
Abstract
The invention provides a PE wood plastic composite, the composite comprises following components in weight percentage: 52 to 58% of vegetable fiber, 28 to 32% of PE, 8 to 12% of powdered steatile, 2 to 2.5% of lubricant, 0.4 to 2.8% of coloring agent, and 0.1 to 0.3% of aging agent. The PE wood plastic composite improves the mechanical properties and has better roughness.
Description
Technical field
The present invention relates to wood plastic composite, be specifically related to a kind of vegetable fibre with PE plastics, powdery prepare high performance wood plastic composite with and processing molding method.
Background technology
Wood plastic composite refers to the material of vegetable fibre and the composite molding of plastics mix and match.Wherein, vegetable fibre is from woody material or draft material etc., woody material such as sawdust, wood shavings, wood chip, coconut husk and bamboo bits etc., draft material such as wheat straw, straw, waste of flax, chaff shell, cotton straw and bagasse etc., the plant resources that these are discarded, after the art breading such as screening, pulverizing, abrasive dust, namely become the wooden Industrial materials that wood is moulded.
Wood plastic composite possesses cost and the feature performance benefit of timber and plastics simultaneously, and this material has corrosion-resistant, the closely similar advantage of warpage, easy to maintenance, outward appearance and timber not.At present, wood plastic composite keeps rapid growth in worldwide application.
Because vegetable material has more intense water-absorbent after being processed into the vegetable fibre of powdery; And thermoplastics generally has hydrophobicity, the consistency extreme difference between vegetable fibre and the thermoplastics, and the cohesive force at interface is smaller, so usually need to add suitable auxiliary agent to improve the interface affinity of vegetable material and plastics; And; the vegetable fibre of the powdery of high filler loading capacity dispersion effect in the thermoplastics of melting is poor, often can exist with the form of certain state of aggregation, so that fluidity of molten is poor; affected moulding, this also needs to add auxiliary agent and improves liquidity and be beneficial to forming materials.Simultaneously, plastic substrate also needs to add the use properties that various auxiliary agents improve processing characteristics and finished product thereof, is used for improving the vegetable fibre of powdery and the mechanical property of the bonding force between the plastics and reinforced composite material.
Summary of the invention
The invention provides a kind of PE wood plastic composite, improved the mechanical property of wood plastic composite, toughness is better.
The invention provides a kind of PE wood plastic composite, comprise composition by weight percentage:
Vegetable fibre: 52～58%;
PE：28～32%；
Talcum powder: 8～12%;
Lubricant: 2～2.5%;
Tinting material: 0.4～2.8%;
Aging agent: 0.1～0.3%.
Further, the summation of the weight percent of described vegetable fibre, described PE, described talcum powder, described lubricant, described tinting material, described aging agent is absolutely.
Further, described plastics are that melting index is 0.2～0.45kg/10min, and ash content is less than 1% polyethylene.
Further, the length-to-diameter ratio of described vegetable fibre is 5～10:1.
Further, described talcous particle diameter is 800 orders～3000 orders.
Further, described aging agent is antioxidant 1010 and 168.
The present invention also provides a kind of processing molding method of PE Wood plastic boards, adopts following processing step to be prepared:
(1) will comprise the mixture blend of following component,
Vegetable fibre: 52～58%;
PE：28～32%；
Talcum powder: 8～12%;
Lubricant: 2～2.5%;
Tinting material: 0.4～2.8%;
Aging agent: 0.1～0.3%;
(2) first vegetable fibre, plastics and talcum powder are added high-speed mixer and stir, be warming up to 80～100 ℃, mix 8～15min, fully discharge moisture content; Add the auxiliary agents such as lubricant, tinting material and aging agent, mix 4～6min; Again with the material discharging to low speed mixer, mix and blend cooling;
(3) by the parallel double-screw extruder extruding pelletization, melt pressure is 4～7MPa;
(4) material particles that will make adds conical double-screw machine forcing machine to be extruded, and cuts into the length of regulation after the cooling again, makes Wood plastic boards.
With respect to prior art, wood plastic composite of the present invention has the following advantages: because talcum powder has natural lipophilicity, therefore can be used as the good filler of hydrophobic nature plastics, replace matrix with it, can improve intensity and rigidity.Comprise some mixtures in the talcum powder, can cause batching that degraded and oxidation occur in processing and use procedure, impact is to improve its modulus to talcum powder the most significantly on plastics, compares with pearl filler commonly used, and talcum powder can be larger on flexural strength and the modulus in flexure impact of plastics.The talcum powder particle diameter is comparatively obvious to the polyolefine Effect on Mechanical Properties.Talcum powder has the maintenance effect to the bending property after in the wood plastic composite long-term exposure water, also can reduce warpage and creep property simultaneously.
Embodiment
Embodiment given below is to concrete description of the present invention, can not be interpreted as the restriction to protection scope of the present invention, and those of ordinary skill in the art still belongs to protection scope of the present invention to some nonessential improvement and adjustment that the present invention makes.
The first embodiment
(A) raw material mixes
Take by weighing recycled plastic powder polyethylene 32 weight parts according to weight proportion, the melting index of this recycled plastic powder is 0.3kg/10min, and ash content is less than 1%; With drying good, particle diameter is 80 purposes, 55 weight part wood powders (common hardwood flour, water content are lower than 3% weight percentage) 8:1; Be 8 with weight part, particle diameter is 800 purpose talcum powder, and is commercially available; Weight part is A-COptiPak100 lubricant 2, that Honeywell company produces; With weight part be 2.7 tinting material; With weight part be 0.3 antioxidant 1010 and 168.
(B) batch mixing
Mixing equipment comprises high-speed mixer and low speed mixer.
The said mixture material is dropped among the high-speed mixer in batches, and (1) adds high-speed mixer with vegetable fibre, PE plastics and talcum powder first and stirs, be warming up to 100 ℃, mixes 10min, fully discharges moisture content; (2) add the auxiliary agents such as lubricant, tinting material and aging agent, at 100 ℃, mix 5min; (3) with the material discharging to low speed mixer, mix and blend is cooled to 40 ℃.
(C) granulation
Utilize vacuum feeder to be evacuated to the tablets press funnel, by parallel double-screw extruder high temperature extruding pelletization, the temperature process condition of granulating extruder is as shown in table 1, and melt pressure is 5MPa, and the pelletizing rotating speed is 150r/min, then send cooling rear encapsulation by force 3 wind.
The temperature process condition of table 1 granulating extruder
| Heating zone | Machine barrel 1 district | Machine barrel 2 districts | Machine barrel 3 districts | Machine barrel 4 districts | Machine barrel 5 districts | Die head |
| Temperature/℃ | 90～165 | 155～175 | 130～165 | 130～160 | 140～160 | 80～160 |
(D) extrude
The material particles of making is added conical double-screw machine forcing machine, and high temperature is extruded, and the temperature process condition of moulding forcing machine is as shown in table 2, and by cutting into the length of regulation after the water quench, the sheet material of gained is Wood plastic boards.
The temperature process condition of table 2 moulding forcing machine
The second embodiment
Raw material mixes
Take by weighing recycled plastic powder polyethylene 28 weight parts according to weight proportion, the melting index of this recycled plastic powder is 0.3kg/10min, and ash content is less than 1%; With drying good, particle diameter is 80 purposes, 55 weight part wood powders (common hardwood flour, water content are lower than 3% weight percentage); Be 1600 purpose talcum powder with 12 weight part particle diameters, commercially available; Weight part is A-COptiPak100 lubricant 2, that Honeywell company produces; With weight part be 2.8 tinting material; With weight part be 0.2 antioxidant 1010 and 168.
Batch mixing, granulation and the processing parameter extruded can carry out rational, trickle adjusting according to those of ordinary skill in the art's simple experience and knowledge with reference to the processing parameter of the first embodiment.
The 3rd embodiment
Take by weighing recycled plastic powder polyethylene 30 weight parts according to weight proportion, the melting index of this recycled plastic powder is 0.3kg/10min, and ash content is less than 1%; With drying good, particle diameter is 120 purposes, 55 weight part wood powders (common hardwood flour, water content are lower than 3% weight percentage); Be 3000 purpose talcum powder with 10 weight part particle diameters, commercially available; Weight part is A-COptiPak100 lubricant 2, that Honeywell company produces; With weight part be 2.7 tinting material; With weight part be 0.3 antioxidant 1010 and 168.
Batch mixing, granulation and the processing parameter extruded can carry out rational, trickle adjusting according to those of ordinary skill in the art's simple experience and knowledge with reference to the processing parameter of the first embodiment.
The first Comparative Examples
The raw material of regular convention formula mixes
Take by weighing recycled plastic powder polyethylene 33 weight parts according to weight proportion, the melting index of this recycled plastic powder is 0.3kg/10min, and ash content is less than 1%; With drying good, particle diameter is 80 purposes, 52 weight part wood powders (common hardwood flour, water content are lower than 3% weight percentage); Be 1200 purpose calcium carbonate with 10 weight part particle diameters, commercially available; Weight part is A-COptiPak100 lubricant 2.2, that Honeywell company produces; With weight part be 2.5 tinting material; With weight part be 0.3 antioxidant 1010 and 168.
Batch mixing, granulation and the processing parameter of extruding with reference to the first embodiment, carry out rational, trickle adjusting according to those of ordinary skill in the art's simple experience and knowledge.
The second Comparative Examples
The raw material of regular convention formula mixes
Take by weighing recycled plastic powder polyethylene 35 weight parts according to weight proportion, the melting index of this recycled plastic powder is 0.3kg/10min, and ash content is less than 1%; With drying good, particle diameter is 80 purposes, 51 weight part wood powders (common hardwood flour, water content are lower than 3% weight percentage); Be 3000 purpose calcium carbonate with 9 weight part particle diameters, commercially available; Weight part is A-COptiPak100 lubricant 2.2, that Honeywell company produces; With weight part be 2.5 tinting material; With weight part be 0.3 antioxidant 1010 and 168.
Batch mixing, granulation and the processing parameter of extruding with reference to the first embodiment, carry out rational, trickle adjusting according to those of ordinary skill in the art's simple experience and knowledge.
Carry out performance measurement by the Wood plastic boards that above-mentioned different composition of raw materials manufacturing is obtained, obtain the result as shown in the table:
Table 3 performance perameter contrast table
| Project | Ultimate load/N | Flexural strength/MPa | Modulus in flexure/MPa |
| The first Comparative Examples | 3683 | 18.6 | 2650 |
| The second Comparative Examples | 3698 | 19.3 | 2721 |
| The first embodiment | 6473 | 29.6 | 4021 |
| The second embodiment | 6658 | 31.4 | 3520 |
| The 3rd embodiment | 7673 | 36.37 | 3515 |
Claims (8)
1. a PE wood plastic composite is characterized in that, comprises composition by weight percentage:
Vegetable fibre: 52～58%;
PE：28～32%；
Talcum powder: 8～12%;
Lubricant: 2～2.5%;
Tinting material: 0.4～2.8%;
Aging agent: 0.1～0.3%.
2. PE wood plastic composite as claimed in claim 1 is characterized in that, the summation of the weight percent of described vegetable fibre, described PE, described talcum powder, described lubricant, described tinting material, described aging agent is absolutely.
3. PE wood plastic composite as claimed in claim 1 is characterized in that, described plastics are that melting index is 0.2～0.45kg/10min, and ash content is less than 1% polyethylene.
4. PE wood plastic composite as claimed in claim 1 is characterized in that, the length-to-diameter ratio of described vegetable fibre is 5～10:1.
5. PE wood plastic composite as claimed in claim 1 is characterized in that, described talcous particle diameter is 800 orders～3000 orders.
6. PE wood plastic composite as claimed in claim 1 is characterized in that, described aging agent is antioxidant 1010 and 168.
7. the processing molding method of a PE Wood plastic boards is characterized in that, adopts following processing step to be prepared:
(1) will comprise the mixture blend of following component,
Vegetable fibre: 52～58%;
PE：28～32%；
Talcum powder: 8～12%;
Lubricant: 2～2.5%;
Tinting material: 0.4～2.8%;
Aging agent: 0.1～0.3%;
(2) first vegetable fibre, plastics and talcum powder are added high-speed mixer and stir, be warming up to 80～100 ℃, mix 8～15min, fully discharge moisture content; Add the auxiliary agents such as lubricant, tinting material and aging agent, mix 4～6min; Again with the material discharging to low speed mixer, mix and blend cooling;
(3) by the parallel double-screw extruder extruding pelletization, melt pressure is 4～7MPa;
(4) material particles that will make adds conical double-screw machine forcing machine to be extruded, and cuts into the length of regulation after the water cooling again, makes Wood plastic boards.
8. the processing molding method of PE Wood plastic boards as claimed in claim 1 is characterized in that, the summation of the weight percent of described vegetable fibre, described PE, described talcum powder, described lubricant, described tinting material, described aging agent is absolutely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103210007A CN103360775A (en) | 2013-07-26 | 2013-07-26 | PE wood plastic composite and processing and forming methods thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013103210007A CN103360775A (en) | 2013-07-26 | 2013-07-26 | PE wood plastic composite and processing and forming methods thereof |
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| CN103360775A true CN103360775A (en) | 2013-10-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107118421A (en) * | 2017-06-13 | 2017-09-01 | 芜湖桑健电子科技有限公司 | A kind of high temperature resistant wood plastic composite and preparation method thereof |
| CN107932943A (en) * | 2017-12-04 | 2018-04-20 | 广西巨林木业科技有限公司 | The production technology of oyster row |
| EP3194489B1 (en) | 2014-09-17 | 2019-07-10 | Imertech Sas | Polymeric compositions |
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2013
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3194489B1 (en) | 2014-09-17 | 2019-07-10 | Imertech Sas | Polymeric compositions |
| CN107118421A (en) * | 2017-06-13 | 2017-09-01 | 芜湖桑健电子科技有限公司 | A kind of high temperature resistant wood plastic composite and preparation method thereof |
| CN107932943A (en) * | 2017-12-04 | 2018-04-20 | 广西巨林木业科技有限公司 | The production technology of oyster row |
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Application publication date: 20131023 |