CN101168622B - Plant straw enhancement polyolefin composite material and manufacturing method thereof - Google Patents
Plant straw enhancement polyolefin composite material and manufacturing method thereof Download PDFInfo
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- CN101168622B CN101168622B CN2007100191009A CN200710019100A CN101168622B CN 101168622 B CN101168622 B CN 101168622B CN 2007100191009 A CN2007100191009 A CN 2007100191009A CN 200710019100 A CN200710019100 A CN 200710019100A CN 101168622 B CN101168622 B CN 101168622B
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Abstract
The invention relates to plant straw reinforced polyolefin composite material and the preparation method thereof. The composite material consists of natural plant straw, polyolefine plastic and processing ingredient, wherein, the plant straw are 50 to 70 percent, the polyolefine plastic is 30 to50 percent, the total is 100 percent, the processing ingredient is 2 to 5 percent of the total weight of the natural plant straw and the recycled polyolefine plastic. Wheat straw or vegetable straw or the mixture of the wheat straw and the vegetable straw are chosen as the plant straw; recycled waste polyvinyl chloride or polyethylene is chosen as the polyolefine plastic; the mixture of any two or three of coupling agent, compatiblizing agent, lubricating agent is chosen as the processing ingredient. The invention has the preparation method that the plant straw is smashed, dried and then mixed with the processing ingredient, then the plant straw is blended and granulated, and then is extruded, cooled to be molded, drawn and cut into wood plastic material with a certain specification. The composite material prepared by the invention has the appearance of a wooden product and the processing characteristic of the wood plastic material, thus the applicable range is wide.
Description
Technical field
The invention belongs to the manufacture technology of composite material field, relate to a kind of biomass Wood plastic composite, be specifically related to a kind of straw and strengthen composite polyolefine material, also relate to the manufacture method of this kind matrix material with straw and waste polyolefine plastics preparation.
Background technology
Wood plastic composite is a kind of novel material, has the performance of timber and plastics concurrently, receives increasing concern.Wood plastic composite can repeat to reclaim processing, has certain biological degradability, is a kind of novel environmental friendly materials.
The timber resources poorness of China, and the agricultural crop straw annual production of China is more than 400,000,000 tons.Agricultural crop straw relates to as Wood plastic composite is existing, but mainly concentrate on rice husk, bamboo, cotton stalk etc., be the also rarely seen report of Wood plastic composite of material with wheat straw stalk and vegetable seed stalk.Wheat straw stalk and vegetable seed stalk are grain-producing area and oil producing area one overall situation problem, and the recycling approach of wheat straw stalk and vegetable seed stalk is few, and major part is all burned, and causes the pollution of environment.Waste or used plastics use in daily life also more and more widely, the white pollution that causes is startling especially.This abundant agricultural resource advantage and a large amount of waste or used plastics provide abundant raw material sources for the development of Wood plastic composite, and therefore the raw material of making Wood plastic composite with wheat straw stalk and vegetable seed stalk and waste or used plastics has important economic benefit and environment protection significance.
Summary of the invention
The purpose of this invention is to provide a kind of straw and strengthen composite polyolefine material, solved the environmental pollution that a large amount of wastes that the straw underutilization causes and burning cause, and waste polyolefine plastics causes the problem of white pollution to environment.
Another object of the present invention provides the preparation method of above-mentioned matrix material, and it is big to solve the manufacturing process difficulty, the problem that production cost is high.
Technical scheme of the present invention is, a kind of straw strengthens composite polyolefine material, polyolefin plastics, processing aid by straw, recovery are formed, according to weight percent, straw is 50%～70%, the polyolefin plastics that reclaims is 30%～50%, and the polyolefin plastics of straw and recovery adds up to 100%, processing aid be straw and recovery the polyolefin plastics gross weight 2%～5%.
Straw is selected the mixture of wheat straw stalk, vegetable seed bar or wheat straw stalk and vegetable seed bar for use.
The polyolefin plastics that reclaims is selected waste polyvinyl chloride, the waste polyethylene of recovery for use, or the mixture of waste polyvinyl chloride and waste polyethylene.
Processing aid is made up of any two or three mixing of coupling agent, compatilizer, lubricant, according to 2～3: 1～2: 1 weight percent weighing preparation.
Coupling agent is selected Tetra hydro Phthalic anhydride for use.
Compatilizer is selected poly-second chloroflo for use.
Lubricant is selected stearic acid for use.
Another technical scheme of the present invention is, the preparation method of this kind of plant straw enhancement polyolefin composite material implements according to following steps,
Step 1: straw is crushed to 20 order powder, dry for standby then; To reclaim polyolefin plastics and sort, fragmentation, cleaning, dry for standby then, each raw material water ratio is less than 5%;
Step 2: according to weight percent weighing straw pellet is 50%～70%, polyolefin plastics is 30%～50%, adding up to weight percent is 100%, in addition again the weighing processing aid that will add be straw and recovery the polyolefin plastics gross weight 2%～5%;
Step 3: with the plant straw powder premix of the processing aid coupling agent Tetra hydro Phthalic anhydride of step 2 weighing, compatilizer poly-second chloroflo, lubricant stearic acid and weighing 20 minutes, add step 2 weighing then and reclaim polyolefin plastics pellet continuation mixing 30 minutes, temperature remains on 30 ℃～50 ℃;
Step 4: the compound that step 3 is obtained carries out granulation, and processing temperature is 120 ℃～160 ℃;
Step 5: mould wood aggregate with what step 4 obtained, extrude according to desired section bar, extrusion temperature is 140 ℃～180 ℃, and the cooling and shaping while extruding draws cutting to the section bar of extruding, promptly simultaneously.
The invention has the beneficial effects as follows; substitute timber with wheat straw stalk and vegetable seed stalk; replace new plastic with the waste or used plastics that reclaims; help saving the protection of timber resources and environment; having solved straw burns atmospheric pollution and waste or used plastics problem of environment pollution caused; described preparation method has simplified manufacturing process, has reduced production cost.
The Wood plastic composite that the present invention makes has the outward appearance and the processing characteristics of timber product, dimensional stabilizing has biological degradability, can prevent damaging by worms, protection against rodents, be applicable to garden landscape, fence, floor, leisure chaise longue, waste bin etc., also can be used for motorway intermediary division board.
Embodiment
The present invention is described in detail below in conjunction with embodiment.
Wood plastic composite of the present invention substitutes timber with wheat straw stalk and vegetable seed stalk, replaces new plastic with the waste or used plastics that reclaims, and has the outward appearance and the processing characteristics of timber product, dimensional stabilizing.
Embodiment 1:
Step 1: the wheat straw bar is crushed to 20 purpose wheat straw bar powder in pulverizer, puts into the drying plant dry for standby then; To reclaim polyvinyl chloride and sort, and be broken into plastic granule, cleaning, dry for standby with plastic breaker then, the water ratio that makes wheat straw bar powder and plastic granule is less than 5%;
Step 2: according to weight percent weighing wheat straw bar is 70%, the polyvinyl chloride that reclaims is 30%, adding up to weight percent is 100%, in addition again the weighing processing aid Tetra hydro Phthalic anhydride that will add be straw and recovery the polyolefin plastics gross weight 3%, stearic acid is 1%;
Step 3; With the wheat straw bar powder of 3% processing aid Tetra hydro Phthalic anhydride of step 2 weighing, 1% stearic acid and weighing premix 20 minutes in high-speed mixer, the recovery polyvinyl chloride granules that adds step 2 weighing then continues to mix 30 minutes, the mixing machine rotating speed is at 400rpm, and temperature remains on 50 ℃;
Step 4: the compound that step 3 is obtained carries out granulation with dual-screw pelletizer, and processing temperature is 120 ℃～130 ℃;
Step 5: mould wood aggregate with what step 4 obtained, extrude, make building keel with twin screw extruder according to desired section bar, go out four simultaneously, extrusion temperature is 140 ℃～150 ℃, and the water-cooled cooling and shaping while extruding draws cutting promptly to the section bar of extruding simultaneously.
The Performance Detection of the plastic-wood material that present embodiment makes is: bending elastic modulus/GPa:3.7; Crooked breaking strength/MPa:49; Tension set/%:3.9; Flexural strength/MPa:32; Shock strength/KJm
-2: 40.5; Screw withdrawal force/kg:209; Water-intake rate (24h)/%:1.1.
Embodiment 2:
Implement according to following steps and concrete parameter,
Step 1: the vegetable seed bar is crushed to 20 purpose vegetable seed bar powder in pulverizer, puts into the drying plant dry for standby then; To reclaim polyethylene and sort, and be broken for plastic granule, cleaning, dry for standby with plastic breaker then, the water ratio that makes vegetable seed bar powder and vinyon pellet is less than 5%;
Step 2: according to weight percent weighing vegetable seed bar is 50%, the polyethylene that reclaims is 50%, adding up to weight percent is 100%, in addition again 1% of the weighing poly-second chloroflo of processing aid that will the add polyethylene gross weight that is vegetable seed bar and recovery, and stearic acid is 1%;
Step 3: with the vegetable seed bar powder of 1% poly-second chloroflo of step 2 weighing, 1% stearic acid and weighing premix 20 minutes in high-speed mixer, the recovery polyethylene pellet that adds step 2 weighing then continues to mix 30 minutes, the mixing machine rotating speed is at 400rpm, and temperature remains on 40 ℃;
Step 4: the compound that step 3 is obtained carries out granulation with dual-screw pelletizer, and processing temperature is 130 ℃～140 ℃;
Step 5: mould wood aggregate with what step 4 obtained, extrude according to desired section bar, be extruded into the plastic-wood floor base material with twin screw extruder, extrusion temperature is 150 ℃～160 ℃, and the water-cooled cooling and shaping while extruding draws cutting promptly to the section bar of extruding simultaneously.
The performance of the plastic-wood material that present embodiment makes: bending elastic modulus/GPa:1.78; Crooked breaking strength/MPa:36.7; Tension set/%:2.80; Flexural strength/MPa:22.3; Shock strength/KJm
-2: 26.8; Screw withdrawal force/kg:190; Water-intake rate (24h)/%:0.7.
Embodiment 3:
Step 1: vegetable seed bar and wheat straw bar are crushed to 20 purpose vegetable seed bars and wheat straw bar powder in pulverizer, put into the drying plant dry for standby then; Reclaim polyethylene and sort, be broken for plastic granule, cleaning, dry for standby with plastic breaker then, make vegetable seed bar and wheat straw bar powder and plastic granule water ratio less than 5%;
Step 2: according to weight percent weighing vegetable seed bar is 30%, the wheat straw bar is 30%, and the polyethylene of recovery is 40%, and adding up to weight percent is 100%, in addition again the weighing Tetra hydro Phthalic anhydride that will add be straw and recovery the polyolefin plastics gross weight 2%, poly-second chloroflo is 1%;
Step 3: with the Tetra hydro Phthalic anhydride of 1% poly-second chloroflo of step 2 weighing and 2% and weighing vegetable seed bar powder and wheat straw bar powder premix 20 minutes in high-speed mixer, the recovery polyethylene pellet that adds step 2 weighing then continues to mix 30 minutes, the mixing machine rotating speed is at 420rpm, and temperature remains on 30 ℃;
Step 4: the compound that step 3 is obtained carries out granulation with dual-screw pelletizer, and processing temperature is 140 ℃～150 ℃;
Step 5: mould wood aggregate with what step 4 obtained, extrude according to desired section bar, be extruded into the plastic-wood floor base material with twin screw extruder, extrusion temperature is 160 ℃～170 ℃, and the water-cooled cooling and shaping while extruding draws cutting promptly to the section bar of extruding simultaneously.
The performance of the plastic-wood material that present embodiment makes: bending elastic modulus/GPa:2.4; Crooked breaking strength/MPa:43.0; Tension set/%:3.6; Flexural strength/MPa:28.9; Shock strength/KJm
-2: 34.8; Screw withdrawal force/kg:198; Water-intake rate (24h)/%:0.67.
Embodiment 4
Step 1: vegetable seed bar and wheat straw bar are crushed to 20 purpose vegetable seed bars and wheat straw bar powder in pulverizer, put into the drying plant dry for standby then; To reclaim polyvinyl chloride and sort, and be broken for plastic granule, cleaning, dry for standby with plastic breaker then, the water ratio that makes vegetable seed bar and wheat straw bar powder and plastic granule is less than 5%;
Step 2: according to weight percent weighing vegetable seed bar is 25%, the wheat straw bar is 25%, the polyvinyl chloride that reclaims is 50%, adding up to weight percent is 100%, in addition again the weighing Tetra hydro Phthalic anhydride that will add be straw and recovery the polyolefin plastics gross weight 3%, poly-second chloroflo is 1.5%, and stearic acid is 1.5%;
Step 3: with the vegetable seed bar powder of the Tetra hydro Phthalic anhydride of 1.5% poly-second chloroflo of step 2 weighing, 1.5% stearic acid and 3% and weighing and wheat straw bar powder premix 20 minutes in high-speed mixer, the recovery polyethylene pellet that adds step 2 weighing then continues to mix 30 minutes, the mixing machine rotating speed is at 430rpm, and temperature remains on 35 ℃;
Step 4: the compound that step 3 is obtained carries out granulation with dual-screw pelletizer, and processing temperature is 150 ℃～160 ℃;
Step 5: mould wood aggregate with what step 4 obtained, extrude, make building keel with twin screw extruder according to desired section bar, go out four simultaneously, extrusion temperature is 170 ℃～180 ℃, and the water-cooled cooling and shaping while extruding draws cutting promptly to the section bar of extruding simultaneously.
The performance of the plastic-wood material that the embodiment of the invention makes: bending elastic modulus/GPa:2.7; Crooked breaking strength/MPa:42.5; Tension set/%:3.5; Flexural strength/MPa:28.5; Shock strength/KJm
-2: 33.3; Screw withdrawal force/kg:195; Water-intake rate (24h)/%:0.69.
Embodiment 5
Step 1: the vegetable seed bar is crushed to 20 purpose vegetable seed bar powder in pulverizer, puts into the drying plant dry for standby then; The polyethylene and the polyvinyl chloride that reclaim are sorted, be broken for plastic granule, cleaning, dry for standby with plastic breaker then, the water ratio that makes vegetable seed bar powder and plastic granule is less than 5%;
Step 2: according to weight percent weighing vegetable seed bar is 60%, the polyethylene and the polyvinyl chloride that reclaim respectively are 20%, adding up to weight percent is 100%, in addition again 2% of the weighing poly-second chloroflo of processing aid that will the add polyolefin plastics gross weight that is straw and recovery, and stearic acid is 1%;
Step 3: with the vegetable seed bar powder of the poly-second chloroflo of 2% processing aid of step 2 weighing, 1% stearic acid and weighing premix 20 minutes in high-speed mixer, the recovery polyethylene pellet that adds step 2 weighing then continues to mix 30 minutes, the mixing machine rotating speed is at 420rpm, and temperature remains on 45 ℃;
Step 4: the compound that step 3 is obtained carries out granulation with dual-screw pelletizer, and processing temperature is 130 ℃～140 ℃;
Step 5: mould wood aggregate with what step 4 obtained, extrude according to desired section bar, be extruded into the plastic-wood floor base material with twin screw extruder, extrusion temperature is 140 ℃～150 ℃, and the water-cooled cooling and shaping while extruding draws cutting promptly to the section bar of extruding simultaneously.
The performance of the plastic-wood material that present embodiment makes: bending elastic modulus/GPa:2.3; Crooked breaking strength/MPa:42.9; Tension set/%:3.4; Flexural strength/, MPa:28.2; Shock strength/KJm
-2: 33.2; Screw withdrawal force/kg:196; Water-intake rate (24h)/%:0.66.
Embodiment 6
Step 1: vegetable seed bar and wheat straw bar are crushed to 20 purpose vegetable seed bars and wheat straw bar powder in pulverizer, put into the drying plant dry for standby then; The polyethylene and the polyvinyl chloride that reclaim are sorted, be broken for plastic granule, cleaning, dry for standby with plastic breaker then, the water ratio that makes vegetable seed bar and wheat straw bar powder and plastic granule is less than 5%;
Step 2: according to weight percent weighing vegetable seed bar is 35%, the wheat straw bar is 35%, the polyethylene and the polyvinyl chloride that reclaim respectively are 15%, adding up to weight percent is 100%, in addition again the weighing Tetra hydro Phthalic anhydride that will add be straw and recovery the polyolefin plastics gross weight 1%, poly-second chloroflo is 0.5%, and stearic acid is 0.5%;
Step 3: with the vegetable seed bar powder of the Tetra hydro Phthalic anhydride of 0.5% poly-second chloroflo of step 2 weighing, 0.5% stearic acid and 1% and weighing and wheat straw bar powder premix 20 minutes in high-speed mixer, the recovery polyethylene pellet that adds step 2 weighing then continues to mix 30 minutes, the mixing machine rotating speed is at 400rpm, and temperature remains on 40 ℃;
Step 4: the compound that step 3 is obtained carries out granulation with dual-screw pelletizer, and processing temperature is 150 ℃～160 ℃;
Step 5: mould wood aggregate with what step 4 obtained, extrude according to desired section bar, be extruded into the plastic-wood floor base material with twin screw extruder, extrusion temperature is 150 ℃～160 ℃, and the water-cooled cooling and shaping while extruding draws cutting promptly to the section bar of extruding simultaneously.
The performance of the plastic-wood material that present embodiment makes: bending elastic modulus/GPa:2.5; Crooked breaking strength/MPa:42.5; Tension set/%:3.5; Flexural strength/MPa:28.5; Shock strength/KJm
-2: 34.6; Screw withdrawal force/kg:192; Water-intake rate (24h)/%:0.71.
The reference standard of above bending elastic modulus, crooked breaking strength, tension set is ASRMD790-92, the reference standard GB/T17657-1999 of flexural strength, shock strength, water-intake rate (24h), the reference standard of screw withdrawal force is FT1, all within desired numerical range.
In sum; matrix material of the present invention and manufacture method thereof; have the outward appearance of timber product and the processing characteristics of plastic-wood material; be applicable to garden landscape, fence, floor, leisure chaise longue, waste bin etc.; also can be used for motorway intermediary division board; help wood protection, solved kind grain district crop straw burning to problems such as atmospheric pollution and waste or used plastics contaminate environment, production cost is low.
Claims (2)
1. a straw strengthens composite polyolefine material, it is characterized in that:
Polyolefin plastics, processing aid by straw, recovery are formed, according to weight percent, straw is 50%～70%, the polyolefin plastics that reclaims is 30%～50%, the polyolefin plastics of straw and recovery adds up to 100%, processing aid be straw and recovery the polyolefin plastics gross weight 2%～5%; Described straw is selected the mixture of wheat straw stalk, vegetable seed bar or wheat straw stalk and vegetable seed bar for use; The polyolefin plastics of described recovery is selected polyvinyl chloride or polyethylene for use, or the polyvinyl chloride and the poly mixture that reclaim; Described processing aid is prepared according to 3: 1 weight percent by Tetra hydro Phthalic anhydride, stearic acid.
2. the preparation method of the described matrix material of claim 1 is characterized in that: implements according to following steps,
Step 1: straw is crushed to 20 order powder, dry for standby; The polyolefin plastics that reclaims is sorted, fragmentation, cleaning, dry for standby then, each raw material water ratio is less than 5%;
Step is 50%～70% according to weight percent weighing straw pellet, polyolefin plastics is 30%～50%, add up to 100%, in addition again the weighing processing aid that will add be straw and recovery the polyolefin plastics gross weight 2%～5%, processing aid is by the weight percent preparation according to 3: 1 of Tetra hydro Phthalic anhydride, stearic acid;
Step 3: with the processing aid of step 2 weighing and plant straw powder premix 20 minutes, add step 2 weighing and reclaim the polyolefin plastics pellet and continue to mix 30 minutes, temperature remains on 30 ℃～50 ℃;
Step 4: the compound that step 3 is obtained carries out granulation, and processing temperature is 120 ℃～160 ℃;
Step 5: mould wood aggregate with what step 4 obtained, section bar is as requested extruded, and extrusion temperature is 140 ℃～180 ℃, and the cooling and shaping while extruding draws cutting promptly to the section bar of extruding.
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| CN2007100191009A CN101168622B (en) | 2007-11-19 | 2007-11-19 | Plant straw enhancement polyolefin composite material and manufacturing method thereof |
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| CN2007100191009A CN101168622B (en) | 2007-11-19 | 2007-11-19 | Plant straw enhancement polyolefin composite material and manufacturing method thereof |
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| CN101168622B true CN101168622B (en) | 2010-07-14 |
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| CN102153801A (en) * | 2011-02-28 | 2011-08-17 | 殷正福 | Straw plastic and production method thereof |
| CN102863809A (en) * | 2011-07-07 | 2013-01-09 | 深圳市格林美高新技术股份有限公司 | Plastic wood material and preparation method thereof |
| CN102924940A (en) * | 2011-08-08 | 2013-02-13 | 深圳市格林美高新技术股份有限公司 | Anti-aging plastic wood composite material and preparation method thereof |
| CN103331803B (en) * | 2013-06-18 | 2015-11-25 | 泗阳蓝阳托盘设备科技有限公司 | There is waterproof top layer string extruded product and extruder |
| CN103923370A (en) * | 2014-03-27 | 2014-07-16 | 安徽华兴金属有限责任公司 | Sectional material and preparation method thereof |
| CN105295403A (en) * | 2014-06-06 | 2016-02-03 | 天水天宝塑业有限责任公司 | Synthesized panel based on waste plastic and plant straws |
| CN104497380B (en) * | 2014-12-20 | 2016-03-30 | 山东绿森塑木复合材料有限公司 | A kind of straw, recycled plastic, regenerated rubber compound stool face |
| CN106117857A (en) * | 2016-07-21 | 2016-11-16 | 芜湖昊轩环保新材料有限公司 | A kind of aging resistance antistatic wood plastic composite board and preparation method thereof |
| CN106317937A (en) * | 2016-09-30 | 2017-01-11 | 湖南师范大学 | High-intensity weather-proof PE microcrystalline wood composite material and preparation method thereof |
| CN110256817A (en) * | 2019-07-19 | 2019-09-20 | 齐齐哈尔大学 | Public transit facility stalk/polymer composites and its preparation method and application |
| CN113736276A (en) * | 2021-08-30 | 2021-12-03 | 上海纤苏新材料科技有限公司 | Fiber-plastic keel and preparation method thereof |
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