CN107345025A - A kind of preparation method of powder of straw filling PP composites - Google Patents

A kind of preparation method of powder of straw filling PP composites Download PDF

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Publication number
CN107345025A
CN107345025A CN201610294471.7A CN201610294471A CN107345025A CN 107345025 A CN107345025 A CN 107345025A CN 201610294471 A CN201610294471 A CN 201610294471A CN 107345025 A CN107345025 A CN 107345025A
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China
Prior art keywords
powder
straw
parts
polypropylene
composites
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CN201610294471.7A
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Chinese (zh)
Inventor
党智斌
宫克难
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Sichuan Xinda Enterprise Group Co Ltd
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Sichuan Xinda Enterprise Group Co Ltd
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Priority to CN201610294471.7A priority Critical patent/CN107345025A/en
Publication of CN107345025A publication Critical patent/CN107345025A/en
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • 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
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
    • C08L2205/16—Fibres; Fibrils

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses a kind of preparation method of powder of straw PP composites, and PP is filled by blended melting extrusion molding using powder of straw, prepares powder of straw filling PP composites, and inserts fraction by weight is calculated as：65 75 parts of polypropylene, 25 35 parts of powder of straw, 0 12 parts of compatilizer, 03 parts of coupling agent, 36 parts of atoleine.Production method is that material is blended using double screw extruder, by the material strip of extrusion through cooling down water cooling, drying, pelletizing, packaging.The present invention fills PP using powder of straw by extrusion by melting, and then obtains a kind of powder of straw filling PP composite.

Description

A kind of preparation method of powder of straw filling PP composites
Technical field
The invention belongs to PP biological plastics field, relates to the use of powder of straw filling PP, so as to obtain a kind of powder of straw filling PP composites.
Background technology
China is a large agricultural country, in northern China, peasant's a large amount of crop straw burnings every year, cause serious environmental problems and The huge waste of resource.Crop straw burning holds fire hazardous, damages and loses to the people's lives and property.And develop stalk For the regrown material technology of raw material, it is one of effective way for solving this problem that stalk, which recycle, can also be increased Farmers' income.
The approach that agricultural crop straw utilizes has a lot, can do chopping and returning, bio-fuel, cultivated mushroom, pulping and paper-making, dynamic Thing feed etc..Degradable biological material can also be fabricated to, with powder of straw filled polypropylene, can not only be improved polyacrylic Mechanical property, cost can also be reduced.
The patent recycled on powder of straw, extruding pelletization typically is carried out using the double extruders of taper, can not be used normal Parallel double-screw extruder carries out extruding pelletization, occurs that powder of straw is not easy blanking using parallel double-screw extruder, blocks up The firmly phenomenon of extruder charge door.
Powder of straw filled polypropylene of the present invention, extruding pelletization is carried out using parallel double-screw extruder, it is dry by pre-processing There is powder of straw and are not easy blanking in dry powder of straw, and adding assistant atoleine, basic improvement, block showing for extruder charge door As.
The content of the invention
The purpose of the present invention is exactly to be filled PP by changing powder of straw species, poly- so as to provide a kind of powder of straw filling The preparation method of propylene.
A kind of powder of straw filled polypropylene, is made up by weight of following components：
65-75 parts polypropylene, 3-6 parts atoleine, 25-35 parts powder of straw, 2-3 parts compatilizer, coupling agent 0-3 parts；As excellent Choosing, atoleine viscosity is 30-40mm 2/s；Viscosity is too small, is not easy to adhere to powder of straw；Viscosity is too big, is not easy to flow, and can cause Adhere to uneven.
Described powder of straw particle diameter is not less than 80 mesh, powder of straw pretreatment, 80 degrees Celsius of 4 hours of drying.Now stalk Powder filled polypropylene function admirable.
Described powder of straw moisture content is not more than 4%, and moisture content is too high, easily causes the tie rod of powder of straw filled polypropylene During easily there is broken strip phenomenon；Described compatilizer is selected from maleic anhydride inoculated polypropylene.
A kind of preparation method of powder of straw filled polypropylene, is comprised the steps of：
（1）65-75 parts polypropylene, 3-6 part atoleines are weighed, adds high mixer, the mixed 1-2min of height；
（2）Powder of straw pre-processes, 80 degrees Celsius of 4 hours of drying.25-35 part powder of straw is weighed, adds step（1）Described height In mixed machine, the mixed 2-3min of height；2-3 parts compatilizer, coupling agent 0-3 parts are continuously added, the mixed 2-3min of height, is taken out standby；
（3）The material that finishes will be mixed and add double screw extruder, 8 sections of warm area temperature of extruder fuselage be followed successively by 175 DEG C, 180 DEG C, 180 DEG C, 180 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 190 DEG C of head temperature.Screw speed is 250 ~ 290r/min, Main feeding frequency is 7 ~ 9, carries out extruding pelletization under the process conditions of side feeding frequency 0, prepares powder of straw of the present invention and fill out Fill PP composites.
Step（1）Polypropylene particles surface can be allowed to stick atoleine；Step（2）Powder of straw can be adhered to poly- third Alkene particle surface, " adhesive " for connecting polypropylene and powder of straw is exactly atoleine.
Polypropylene and powder of straw are added extruder by prior art together, can cause the easy blanking of polypropylene, powder of straw is not The phenomenon of easy blanking, blocks extruder feed port.
And pass through step（1）With（2）What is obtained sticks the polypropylene material grain of powder of straw, can with much smoother be added to extrusion Machine, be not in the phenomenon that powder of straw is not easy blanking, will not more block the spout of extruder.
The preparation method of powder of straw filled polypropylene of the present invention, there is advantages below：
（1）There is no particular/special requirement to extruder, it is not necessary to the double extruders of cone, can enter using common parallel double-screw extruder Row extruding pelletization；
（2）Acted on by " gluing " of atoleine, solve powder of straw and be not easy blanking, or even block showing for extruder charge door As.
Embodiment
Raw material used in embodiment, unless otherwise specified, each component is all parts by weight in embodiment.
Embodiment 1
（1）75 parts of polypropylene, 5 parts of atoleines are weighed, add high mixer, the mixed 2min of height；
（2）Powder of straw pre-processes, 80 degrees Celsius of 4 hours of drying.25 parts of powder of straw is weighed, adds step（1）Described height mixes In machine, the mixed 3min of height；2 parts of 3 parts of compatilizers, coupling agent are continuously added, the mixed 3min of height, is taken out standby；
（3）The material that finishes will be mixed and add double screw extruder, 8 sections of warm area temperature of extruder fuselage be followed successively by 175 DEG C, 180 DEG C, 180 DEG C, 180 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 190 DEG C of head temperature.Screw speed is 250 ~ 290r/min, Main feeding frequency is 7 ~ 9, carries out extruding pelletization under the process conditions of side feeding frequency 0, prepares powder of straw of the present invention and fill out Fill PP composites.
Testing result is as follows：
Simply supported beam notch impact strength（KJ/m2）【ISO 179-1:2010】：26；
Simply supported beam unnotched impact strength（KJ/m2）【ISO 179-1:2010】：3.7；
Cantilever beam unnotched impact strength（KJ/m2）【ISO 180:2010】：29.5；
Tensile strength Mpa【 ISO 527-2:2012】：33.7；
Bending strength Mpa【 ISO 178:2010】：43.5；
Bending modulus Mpa【 ISO 178:2010】：1512.
Embodiment 2
（1）70 parts of polypropylene, 5 parts of atoleines are weighed, add high mixer, the mixed 2min of height；
（2）Powder of straw pre-processes, 80 degrees Celsius of 4 hours of drying.30 parts of powder of straw are weighed, add step（1）Described height mixes In machine, the mixed 3min of height；2 parts of 3 parts of compatilizers, coupling agent are continuously added, the mixed 3min of height, is taken out standby；
（3）The material that finishes will be mixed and add double screw extruder, 8 sections of warm area temperature of extruder fuselage be followed successively by 175 DEG C, 180 DEG C, 180 DEG C, 180 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 190 DEG C of head temperature.Screw speed is 250 ~ 290r/min, Main feeding frequency is 7 ~ 9, carries out extruding pelletization under the process conditions of side feeding frequency 0, prepares powder of straw of the present invention and fill out Fill PP composites.
Testing result is as follows：
Simply supported beam notch impact strength（KJ/m2）【ISO 179-1:2010】：17.8；
Simply supported beam unnotched impact strength（KJ/m2）【ISO 179-1:2010】：2.6；
Cantilever beam unnotched impact strength（KJ/m2）【ISO 180:2010】：25.8；
Tensile strength Mpa【 ISO 527-2:2012】：30.4；
Bending strength Mpa【 ISO 178:2010】：50.7；
Bending modulus Mpa【 ISO 178:2010】：1643.
Embodiment 3
（1）65 parts of polypropylene, 5 parts of atoleines are weighed, add high mixer, the mixed 2min of height；
（2）Powder of straw pre-processes, 80 degrees Celsius of 4 hours of drying.35 parts of powder of straw is weighed, adds step（1）Described height mixes In machine, the mixed 3min of height；2 parts of 3 parts of compatilizers, coupling agent are continuously added, the mixed 3min of height, is taken out standby；
（3）The material that finishes will be mixed and add double screw extruder, 8 sections of warm area temperature of extruder fuselage be followed successively by 175 DEG C, 180 DEG C, 180 DEG C, 180 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 190 DEG C of head temperature.Screw speed is 250 ~ 290r/min, Main feeding frequency is 7 ~ 9, carries out extruding pelletization under the process conditions of side feeding frequency 0, prepares powder of straw of the present invention and fill out Fill PP composites.
Testing result is as follows：
Simply supported beam notch impact strength（KJ/m2）【ISO 179-1:2010】：14.5；
Simply supported beam unnotched impact strength（KJ/m2）【ISO 179-1:2010】：2.3；
Cantilever beam unnotched impact strength（KJ/m2）【ISO 180:2010】：15.8；
Tensile strength Mpa【 ISO 527-2:2012】：28.2；
Bending strength Mpa【 ISO 178:2010】：54.5；
Bending modulus Mpa【 ISO 178:2010】：1895.

Claims (7)

1. a kind of preparation method of powder of straw filling PP composites, it is characterised in that pass through melting extrusion legal system using powder of straw For powder of straw filling PP composites are gone out, by weight, formula is as follows for its raw material components：
Polypropylene 65-75 parts, powder of straw 25-35 parts, compatilizer 0-12 parts, coupling agent 0-3 parts, atoleine 3-6 parts.
2. powder of straw filled polypropylene as claimed in claim 1, it is characterised in that：Described powder of straw particle diameter is not less than 80 Mesh, moisture content are not more than 4%.
3. the polypropylene of powder of straw filling as claimed in claim 1, it is characterised in that：The viscosity of described atoleine is 30-40mm2/s.
(4. examination criteria ISO3104,40 DEG C of temperature).
5. powder of straw filled polypropylene as claimed in claim 1, it is characterised in that：Described compatilizer is using grafting Malaysia Acid anhydrides.
6. powder of straw filled polypropylene as claimed in claim 1, it is characterised in that：Described coupling agent is selected from silane coupled One or more in agent, titanate coupling agent and phosphate coupling agent.
7. the preparation method of any one of a kind of claim 1-5 powder of straw filled polypropylenes, it is characterised in that including following Step：
（1）65-75 parts polypropylene, 3-6 part atoleines are weighed, adds high mixer, the mixed 1-2min of height；
（2）The pretreatment of powder of straw, 80 degrees Celsius of 4 hours of drying, 25-35 part powder of straw is weighed, add step（1）Described In high mixer, the mixed 2-4min of height；Compatilizer 2-3 parts, coupling agent 0-3 parts are continuously added, the mixed 2-4min of height, is taken out standby；
（3）The material that finishes will be mixed and add double screw extruder, 8 sections of warm area temperature of extruder fuselage be followed successively by 175 DEG C, 180 DEG C, 180 DEG C, 180 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 190 DEG C of head temperature, screw speed is 250 ~ 290r/min, Main feeding frequency is 7 ~ 9, carries out extruding pelletization under the process conditions of side feeding frequency 0, prepares powder of straw of the present invention and fill out Fill PP composites.
CN201610294471.7A 2016-05-06 2016-05-06 A kind of preparation method of powder of straw filling PP composites Pending CN107345025A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108164820A (en) * 2017-12-27 2018-06-15 四川鑫达企业集团有限公司 A kind of plant fiber/PP composite materials and preparation method thereof
CN108727703A (en) * 2018-06-29 2018-11-02 济南大学 A kind of preparation method and products obtained therefrom of cross-linking modified stalk fibre/PP wood plastic composites
CN110054834A (en) * 2019-03-22 2019-07-26 浙江工业大学 A kind of stalk PP composite material and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101230167A (en) * 2007-12-27 2008-07-30 上海金发科技发展有限公司 Partially-degrable PP/straw powder compound and preparation method thereof
CN103756147A (en) * 2014-01-08 2014-04-30 合肥杰事杰新材料股份有限公司 Modified polypropylene of straw powder and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101230167A (en) * 2007-12-27 2008-07-30 上海金发科技发展有限公司 Partially-degrable PP/straw powder compound and preparation method thereof
CN103756147A (en) * 2014-01-08 2014-04-30 合肥杰事杰新材料股份有限公司 Modified polypropylene of straw powder and preparation method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108164820A (en) * 2017-12-27 2018-06-15 四川鑫达企业集团有限公司 A kind of plant fiber/PP composite materials and preparation method thereof
CN108727703A (en) * 2018-06-29 2018-11-02 济南大学 A kind of preparation method and products obtained therefrom of cross-linking modified stalk fibre/PP wood plastic composites
CN108727703B (en) * 2018-06-29 2020-08-11 济南大学 Preparation method of crosslinked modified straw fiber/PP wood-plastic composite material and obtained product
CN110054834A (en) * 2019-03-22 2019-07-26 浙江工业大学 A kind of stalk PP composite material and preparation method thereof

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Application publication date: 20171114