CN103396598A - Macromolecule modified flax-plastic composite material sheet and preparation method thereof - Google Patents

Macromolecule modified flax-plastic composite material sheet and preparation method thereof Download PDF

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Publication number
CN103396598A
CN103396598A CN2013103658723A CN201310365872A CN103396598A CN 103396598 A CN103396598 A CN 103396598A CN 2013103658723 A CN2013103658723 A CN 2013103658723A CN 201310365872 A CN201310365872 A CN 201310365872A CN 103396598 A CN103396598 A CN 103396598A
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China
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plastic
maleic anhydride
plastic composite
macromolecule modified
plastic pellet
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CN2013103658723A
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Chinese (zh)
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雷文
司鹏
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南京林业大学
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Priority to CN2013103658723A priority Critical patent/CN103396598A/en
Publication of CN103396598A publication Critical patent/CN103396598A/en

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Abstract

The invention relates to a macromolecule modified flax-plastic composite material sheet and a preparation method thereof. The macromolecule modified flax-plastic composite material sheet is prepared by plastic particles, modified fibrilia, maleic anhydride grafted plastic particles, terpene resin, a stearate and chlorinated polyethylene. The preparation method comprises: dissolving a polyvinyl chloride powder with 1, 2-dichloroethane, adding fibrilia, after immersion modifying, uniformly mixing with the plastic particles, the maleic anhydride grafted plastic particles, terpene resin, the stearate and chlorinated polyethylene, performing compression molding to obtain the sheet. The macromolecule modified flax-plastic composite material sheet has the advantages of convenient production and manufacture, higher mechanization degree in the production process and low production cost. Compared with conventional plastic sheets, the macromolecule modified flax-plastic composite material sheet is less in plastic usage amount, friendly to environment, high in modulus, high in rigidity, better in creep resistance; and compared with wood-plastic composite materials and other flax-plastic composite materials, the macromolecule modified flax-plastic composite material sheet is higher in strength, not easy to deform, more excellent in comprehensive performances, and wider in application scope.

Description

A kind of macromolecule modified flax and plastic composite board and preparation method thereof

Technical field

The present invention relates to a kind of kenaf-plastics composite, particularly relate to a kind of macromolecule modified flax and plastic composite board and preparation method thereof.

Background technology

In recent years, along with the enhancing of people's environmental protection consciousness, raw material sources extensively, environmental friendliness, kenaf-plastics composite renewable, that can be recycled more and more be subject to people's attention.Kenaf-plastics composite can be used as the wrapping material such as pallet, tr, the storage materials such as bed board, paving beam, finishing, the finishing material such as house, floor, building template, the leisure materials such as the outdoor tables and chairs that the occasions such as park, court, street are used, stool, the in-built decoration materials that the vehicles such as automobile, aircraft use, dividing plate, door-plate etc.Kenaf-plastics composite has material homogeneous, size and stablizes, is difficult for cracking than timber and without defects such as timber knot, twills; Processibility with thermoplastics, extrude, the technique such as injection moulding, mold pressing all can be used to moulding, and equipment attrition is little; Goods can be pressed into the beginning of rabbet-shaped, solid pattern and other requirement, need not to carry out complicated secondary processing; By adding the techniques such as tinting material, japanning or overlay film to can be made into various goods lucuriant in design; Production energy consumption is little; Easy to process, can saw, plane and bonding, or with nail, bolt, fix, use wood working tool to complete, and nail-holding ability obviously is better than other synthetic materialss; Need not utilize toxic chemical substance to process, not contain formaldehyde; The outward appearance that timber is arranged, than plastics and high intensity and the hardness of wood plastic product; Reusable and recycling after discarded, be conducive to the plurality of advantages such as environmental protection.But also come with some shortcomings, as relatively low in absolute strength, in use therefore can occur bending and deformation etc., thereby limit to its use range and life-span.So, invent a kind of modified flax and plastic matrix material, make it have higher intensity, in use be difficult for deforming just very necessary.

Summary of the invention

The objective of the invention is provides a kind of macromolecule modified flax and plastic composite board and preparation method thereof for above-mentioned weak point.

The objective of the invention is to be achieved through the following technical solutions:

A kind of macromolecule modified flax and plastic composite board is prepared from by the raw material that comprises following parts by weight:

A kind of macromolecule modified flax and plastic composite board of the present invention, wherein said plastic pellet adopt a kind of in polyethylene, polypropylene, polystyrene.

A kind of macromolecule modified flax and plastic composite board of the present invention, wherein said maleic anhydride graft plastic pellet is a kind of in maleic anhydride grafted polyethylene, maleic anhydride inoculated polypropylene, maleic anhydride grafted polystyrene, it selects corresponding with plastic pellet, be that plastic pellet is while being polyethylene, select maleic anhydride grafted polyethylene, when plastic pellet is polypropylene, select maleic anhydride inoculated polypropylene, when plastic pellet is polystyrene, select maleic anhydride grafted polystyrene.

A kind of macromolecule modified flax and plastic composite board of the present invention, wherein said modification flaxen fiber length 2-7mm, coat processing by flaxen fiber through polyvinyl chloride and form; Described flaxen fiber is a kind of in hemp, flax and ramie.

A kind of macromolecule modified flax and plastic composite board of the present invention, wherein said stearate are a kind of in calcium stearate or Zinic stearas.

A kind of macromolecule modified flax and plastic composite board of the present invention, in wherein said chlorinatedpolyethylene, cl content is 28-36%.

The production method of a kind of macromolecule modified flax and plastic matrix material of the present invention, it comprises the following steps:

1. take 1 of 100 weight parts, the 2-ethylene dichloride, insert in container, is heated to 80 ℃, adds the powder material of polyvinyl chloride of 0.8-1.2 weight part under the condition that constantly stirs, and is stirred to powder material of polyvinyl chloride and dissolves fully, is cooled to room temperature;

2. the flaxen fiber of 100 weight parts is joined in above-mentioned solution, take out after immersion 15-25min., extract, put into the baking oven of 80 ℃, disperse oven dry 2-2.4h, then naturally cool to room temperature, obtain the modification flaxen fiber;

3. take each raw material by formula ratio;

4. open twin-screw extruder, design temperature is 150-180 ℃, with plastic pellet, the maleic anhydride graft plastic pellet, terpine resin, stearate and chlorinatedpolyethylene are put between two rollers of rubber mixing machine, then be warming up to design temperature, insulation, until the complete melting of all raw materials and while sticking to equably on roller, add the modification flaxen fiber, make flaxen fiber and plastic pellet, the maleic anhydride graft plastic pellet, terpine resin, stearate and chlorinatedpolyethylene mix obtain compound fully, then stop twin-screw extruder, with blade, compound is taken off from two rollers, after being cooled to room temperature, pulverize,

5. the compound that will pulverize is put into mould, mould is moved between the bolster of press, matched moulds gently, the maintenance molding pressure is 0MPa, starts to be forced into 10-12MPa after 30-40min., and under this pressure pressurize 30-60min., while then being cooled to gradually 30 ℃, die sinking, take out sheet material, namely completes.

A kind of macromolecule modified flax and plastic composite board of the present invention, it is convenient to manufacture, and in production process, mechanization degree is higher, and required labor force is less, and production cost is low.The macromolecule modified flax and plastic composite board is compared with common plastics sheet material, and amount of plastic used is few, and is more friendly to environment, modulus is higher, and rigidity is larger, more creep resistance, can take full advantage of this common crops of flaxen fiber simultaneously, reduce the products material cost; The macromolecule modified flax and plastic composite board is compared with wood plastic composite and other kenaf-plastics composite, and intensity is higher, and more not yielding, over-all properties is more excellent, and use range is wider.

Embodiment

Below adopt embodiment to illustrate a kind of macromolecule modified flax and plastic composite board of the present invention and preparation method thereof.

Embodiment 1

1. take 1 of 100kg, the 2-ethylene dichloride, insert in container, is heated to 80 ℃, adds the powder material of polyvinyl chloride of 1kg under the condition that constantly stirs, and is stirred to powder material of polyvinyl chloride and dissolves fully, is cooled to room temperature;

2. the flaxen fiber of 100kg is joined in above-mentioned solution, take out after immersion 20min., extract, put into the baking oven of 80 ℃, disperse oven dry 2.2h, then naturally cool to room temperature, obtain the modification flaxen fiber;

3. take each raw material by formula ratio;

4. open twin-screw extruder, design temperature is 165 ℃, with plastic pellet, the maleic anhydride graft plastic pellet, terpine resin, stearate and chlorinatedpolyethylene are put between two rollers of rubber mixing machine, then be warming up to design temperature, insulation, until the complete melting of all raw materials and while sticking to equably on roller, add the modification flaxen fiber, make flaxen fiber and plastic pellet, the maleic anhydride graft plastic pellet, terpine resin, stearate and chlorinatedpolyethylene mix obtain compound fully, then stop twin-screw extruder, with blade, compound is taken off from two rollers, after being cooled to room temperature, pulverize,

5. the compound that will pulverize is put into mould, mould moved between the bolster of press, and matched moulds gently, the maintenance molding pressure is 0MPa, 35min. after start to be forced into 11MPa, and under this pressure pressurize 45min., while then being cooled to gradually 30 ℃, die sinking, take out sheet material, namely completes.

After testing, above-mentioned macromolecule modified flax and plastic composite board tensile strength: 30.4MPa, flexural strength: 48.6MPa.

Embodiment 2

1. take 1 of 100kg, the 2-ethylene dichloride, insert in container, is heated to 80 ℃, adds the powder material of polyvinyl chloride of 0.8kg under the condition that constantly stirs, and is stirred to powder material of polyvinyl chloride and dissolves fully, is cooled to room temperature;

2. the flaxen fiber of 100kg is joined in above-mentioned solution, take out after immersion 15min., extract, put into the baking oven of 80 ℃, disperse oven dry 2h, then naturally cool to room temperature, obtain the modification flaxen fiber;

3. take each raw material by formula ratio;

4. open twin-screw extruder, design temperature is 165 ℃, with plastic pellet, the maleic anhydride graft plastic pellet, terpine resin, stearate and chlorinatedpolyethylene are put between two rollers of rubber mixing machine, then be warming up to design temperature, insulation, until the complete melting of all raw materials and while sticking to equably on roller, add the modification flaxen fiber, make flaxen fiber and plastic pellet, the maleic anhydride graft plastic pellet, terpine resin, stearate and chlorinatedpolyethylene mix obtain compound fully, then stop twin-screw extruder, with blade, compound is taken off from two rollers, after being cooled to room temperature, pulverize,

5. the compound that will pulverize is put into mould, mould moved between the bolster of press, and matched moulds gently, the maintenance molding pressure is 0MPa, 30min. after start to be forced into 10MPa, and under this pressure pressurize 30min., while then being cooled to gradually 30 ℃, die sinking, take out sheet material, namely completes.

After testing, above-mentioned macromolecule modified flax and plastic composite board tensile strength: 32.5MPa, flexural strength: 50.2MPa.

Embodiment 3

1. take 1 of 100kg, the 2-ethylene dichloride, insert in container, is heated to 80 ℃, adds the powder material of polyvinyl chloride of 1.2kg under the condition that constantly stirs, and is stirred to powder material of polyvinyl chloride and dissolves fully, is cooled to room temperature;

2. the flaxen fiber of 100kg is joined in above-mentioned solution, take out after immersion 25min., extract, put into the baking oven of 80 ℃, disperse oven dry 2.4h, then naturally cool to room temperature, obtain the modification flaxen fiber;

3. take each raw material by formula ratio;

4. open twin-screw extruder, design temperature is 180 ℃, with plastic pellet, the maleic anhydride graft plastic pellet, terpine resin, stearate and chlorinatedpolyethylene are put between two rollers of rubber mixing machine, then be warming up to design temperature, insulation, until the complete melting of all raw materials and while sticking to equably on roller, add the modification flaxen fiber, make flaxen fiber and plastic pellet, the maleic anhydride graft plastic pellet, terpine resin, stearate and chlorinatedpolyethylene mix obtain compound fully, then stop twin-screw extruder, with blade, compound is taken off from two rollers, after being cooled to room temperature, pulverize,

5. the compound that will pulverize is put into mould, mould moved between the bolster of press, and matched moulds gently, the maintenance molding pressure is 0MPa, 40min. after start to be forced into 12MPa, and under this pressure pressurize 60min., while then being cooled to gradually 30 ℃, die sinking, take out sheet material, namely completes.

After testing, above-mentioned macromolecule modified flax and plastic composite board tensile strength: 34.1MPa, flexural strength: 44.8MPa.

Embodiment 4

1. take 1 of 100kg, the 2-ethylene dichloride, insert in container, is heated to 80 ℃, adds the powder material of polyvinyl chloride of 1.2kg under the condition that constantly stirs, and is stirred to powder material of polyvinyl chloride and dissolves fully, is cooled to room temperature;

2. the flaxen fiber of 100kg is joined in above-mentioned solution, take out after immersion 20min., extract, put into the baking oven of 80 ℃, disperse oven dry 2h, then naturally cool to room temperature, obtain the modification flaxen fiber;

3. take each raw material by formula ratio;

4. open twin-screw extruder, design temperature is 150 ℃, with plastic pellet, the maleic anhydride graft plastic pellet, terpine resin, stearate and chlorinatedpolyethylene are put between two rollers of rubber mixing machine, then be warming up to design temperature, insulation, until the complete melting of all raw materials and while sticking to equably on roller, add the modification flaxen fiber, make flaxen fiber and plastic pellet, the maleic anhydride graft plastic pellet, terpine resin, stearate and chlorinatedpolyethylene mix obtain compound fully, then stop twin-screw extruder, with blade, compound is taken off from two rollers, after being cooled to room temperature, pulverize,

5. the compound that will pulverize is put into mould, mould moved between the bolster of press, and matched moulds gently, the maintenance molding pressure is 0MPa, 35min. after start to be forced into 12MPa, and under this pressure pressurize 45min., while then being cooled to gradually 30 ℃, die sinking, take out sheet material, namely completes.

After testing, above-mentioned macromolecule modified flax and plastic composite board tensile strength: 32.8MPa, flexural strength: 43.6MPa.

Embodiment 5

1. take 1 of 100kg, the 2-ethylene dichloride, insert in container, is heated to 80 ℃, adds the powder material of polyvinyl chloride of 0.8kg under the condition that constantly stirs, and is stirred to powder material of polyvinyl chloride and dissolves fully, is cooled to room temperature;

2. the flaxen fiber of 100kg is joined in above-mentioned solution, take out after immersion 15min., extract, put into the baking oven of 80 ℃, disperse oven dry 2.4h, then naturally cool to room temperature, obtain the modification flaxen fiber;

3. take each raw material by formula ratio;

4. open twin-screw extruder, design temperature is 180 ℃, with plastic pellet, the maleic anhydride graft plastic pellet, terpine resin, stearate and chlorinatedpolyethylene are put between two rollers of rubber mixing machine, then be warming up to design temperature, insulation, until the complete melting of all raw materials and while sticking to equably on roller, add the modification flaxen fiber, make flaxen fiber and plastic pellet, the maleic anhydride graft plastic pellet, terpine resin, stearate and chlorinatedpolyethylene mix obtain compound fully, then stop twin-screw extruder, with blade, compound is taken off from two rollers, after being cooled to room temperature, pulverize,

5. the compound that will pulverize is put into mould, mould moved between the bolster of press, and matched moulds gently, the maintenance molding pressure is 0MPa, 30min. after start to be forced into 11MPa, and under this pressure pressurize 60min., while then being cooled to gradually 30 ℃, die sinking, take out sheet material, namely completes.

After testing, above-mentioned macromolecule modified flax and plastic composite board tensile strength: 36.9MPa, flexural strength: 49.6MPa.

Embodiment 6

1. take 1 of 100kg, the 2-ethylene dichloride, insert in container, is heated to 80 ℃, adds the powder material of polyvinyl chloride of 0.9kg under the condition that constantly stirs, and is stirred to powder material of polyvinyl chloride and dissolves fully, is cooled to room temperature;

2. the flaxen fiber of 100kg is joined in above-mentioned solution, take out after immersion 18min., extract, put into the baking oven of 80 ℃, disperse oven dry 2.3h, then naturally cool to room temperature, obtain the modification flaxen fiber;

3. take each raw material by formula ratio;

4. open twin-screw extruder, design temperature is 178 ℃, with plastic pellet, the maleic anhydride graft plastic pellet, terpine resin, stearate and chlorinatedpolyethylene are put between two rollers of rubber mixing machine, then be warming up to design temperature, insulation, until the complete melting of all raw materials and while sticking to equably on roller, add the modification flaxen fiber, make flaxen fiber and plastic pellet, the maleic anhydride graft plastic pellet, terpine resin, stearate and chlorinatedpolyethylene mix obtain compound fully, then stop twin-screw extruder, with blade, compound is taken off from two rollers, after being cooled to room temperature, pulverize,

5. the compound that will pulverize is put into mould, mould moved between the bolster of press, and matched moulds gently, the maintenance molding pressure is 0MPa, 37min. after start to be forced into 11.5MPa, and under this pressure pressurize 50min., while then being cooled to gradually 30 ℃, die sinking, take out sheet material, namely completes.

After testing, above-mentioned macromolecule modified flax and plastic composite board tensile strength: 37.8MPa, flexural strength: 52.3MPa.

Claims (7)

1. macromolecule modified flax and plastic composite board is prepared from by the raw material of following parts by weight:
2. a kind of macromolecule modified flax and plastic composite board according to claim 1, is characterized in that described plastic pellet adopts a kind of in polyethylene, polypropylene, polystyrene.
3. a kind of macromolecule modified flax and plastic composite board according to claim 1, it is characterized in that described maleic anhydride graft plastic pellet is a kind of in maleic anhydride grafted polyethylene, maleic anhydride inoculated polypropylene, maleic anhydride grafted polystyrene, it selects corresponding with plastic pellet, be that plastic pellet is while being polyethylene, select maleic anhydride grafted polyethylene, when plastic pellet is polypropylene, select maleic anhydride inoculated polypropylene, when plastic pellet is polystyrene, select maleic anhydride grafted polystyrene.
4. a kind of macromolecule modified flax and plastic composite board according to claim 1, is characterized in that described modification flaxen fiber length 2-7mm, coated to process through polyvinyl chloride by flaxen fiber to form; Described flaxen fiber is a kind of in hemp, flax and ramie.
5. a kind of macromolecule modified flax and plastic composite board according to claim 1, is characterized in that described stearate is a kind of in calcium stearate or Zinic stearas.
6. a kind of macromolecule modified flax and plastic composite board according to claim 1, is characterized in that cl content 28-36% in described chlorinatedpolyethylene.
7. the preparation method of a kind of macromolecule modified flax and plastic composite board according to claim 1 is characterized in that its production method comprises the following steps:
1. take 1 of 100 weight parts, the 2-ethylene dichloride, insert in container, is heated to 80 ℃, adds the powder material of polyvinyl chloride of 0.8-1.2 weight part under the condition that constantly stirs, and is stirred to powder material of polyvinyl chloride and dissolves fully, is cooled to room temperature;
2. the flaxen fiber of 100 weight parts is joined in above-mentioned solution, take out after immersion 15-25min., extract, put into the baking oven of 80 ℃, disperse oven dry 2-2.4h, then naturally cool to room temperature, obtain the modification flaxen fiber;
3. take each raw material by formula ratio;
4. open twin-screw extruder, design temperature is 150-180 ℃, with plastic pellet, the maleic anhydride graft plastic pellet, terpine resin, stearate and chlorinatedpolyethylene are put between two rollers of rubber mixing machine, then be warming up to design temperature, insulation, until the complete melting of all raw materials and while sticking to equably on roller, add the modification flaxen fiber, make flaxen fiber and plastic pellet, the maleic anhydride graft plastic pellet, terpine resin, stearate and chlorinatedpolyethylene mix obtain compound fully, then stop twin-screw extruder, with blade, compound is taken off from two rollers, after being cooled to room temperature, pulverize,
5. the compound that will pulverize is put into mould, mould is moved between the bolster of press, matched moulds gently, the maintenance molding pressure is 0MPa, starts to be forced into 10-12MPa after 30-40min., and under this pressure pressurize 30-60min., while then being cooled to gradually 30 ℃, die sinking, take out sheet material, namely completes.
CN2013103658723A 2013-08-21 2013-08-21 Macromolecule modified flax-plastic composite material sheet and preparation method thereof CN103396598A (en)

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Publication number Priority date Publication date Assignee Title
CN104877233A (en) * 2015-06-09 2015-09-02 苏州德翔装饰工程有限公司 Wood-plastic composite material for floorboard and preparing method thereof
CN107674285A (en) * 2017-10-25 2018-02-09 湖南工业大学 A kind of sisal fiber polyolefin composite foam material for coating processing and preparation method thereof
CN109852093A (en) * 2017-11-30 2019-06-07 天津市川浩塑料制品有限公司 A kind of regenerating and modifying plastic grain

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104877233A (en) * 2015-06-09 2015-09-02 苏州德翔装饰工程有限公司 Wood-plastic composite material for floorboard and preparing method thereof
CN107674285A (en) * 2017-10-25 2018-02-09 湖南工业大学 A kind of sisal fiber polyolefin composite foam material for coating processing and preparation method thereof
CN107674285B (en) * 2017-10-25 2020-06-19 湖南工业大学 Coated sisal fiber polyolefin composite foam material and preparation method thereof
CN109852093A (en) * 2017-11-30 2019-06-07 天津市川浩塑料制品有限公司 A kind of regenerating and modifying plastic grain

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