CN102532706B - Preparation method of polypropylene composite material with high strength and high toughness - Google Patents

Preparation method of polypropylene composite material with high strength and high toughness Download PDF

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CN102532706B
CN102532706B CN2011104423641A CN201110442364A CN102532706B CN 102532706 B CN102532706 B CN 102532706B CN 2011104423641 A CN2011104423641 A CN 2011104423641A CN 201110442364 A CN201110442364 A CN 201110442364A CN 102532706 B CN102532706 B CN 102532706B
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polypropylene
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CN102532706A (en
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李玲
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Changchun Dali Nano Technology Development Co.,Ltd.
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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
    • B29C48/25—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
    • 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
    • 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
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
    • 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
    • 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
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92885—Screw or gear
    • 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
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895—Barrel or housing

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

A preparation method of a polypropylene composite material with high strength and high toughness belongs to the fields of chemical engineering and fine chemical industry. The preparation method comprises the following steps: weighing components according to the following mass percents: 10-45% of homopolymerized polypropylene, 10-25% of copolymerized polypropylene, 15-40% of copolymerized polypropylene, 9-16% of POE, 5-35% of polypropylene reinforcing toughening modifiers, 0.15-0.4% of nucleating agents, 0.25-0.55% of anti-oxidants, and 0.2-0.5% of lubricants; adding the weighed materials into a high-speed mixer, fully mixing at a speed of 1000 r/min for two minutes, releasing the materials; adding the mixed materials into a hopper of a double screw extruder, extruding the materials according to technological parameters to obtain the composite material particles. According to the polypropylene composite material of the invention, the crystallization state of polypropylene is changed by components of the polypropylene reinforcing toughening modifier, the ethane-octylene copolymer, the nucleating agent and the like, and thus mechanical properties such as strength and toughness of the composite material are changed.

Description

A kind of preparation method of high-intensity high-tenacity polypropylene composite material
Technical field
The invention belongs to chemical engineering, field of fine chemical, particularly relate to a kind of preparation for processing that high-intensity high-tenacity adopts the matrix material that high polymeric compound produces that has.
Background technology
All the time, polypropylene is subjected to plastic working industry practitioner's great attention owing to having excellent mechanical property in the prior art, and the plastics based on polypropylene more and more present in the life thereby make.Polyacrylic major advantage is that density is low, intensity height, good toughness, heat-drawn wire height.But itself also has certain defective, and is poor such as lower temperature resistance, and notched Izod impact strength is low, and ageing resistance is poor, and shrinking percentage is big, and these shortcomings have restricted its application in life, production.Along with continuous progress in science and technology in recent years, it is found that much polypropylene has been carried out the method that modification improves its shortcoming, brings into play its advantage.Method to polypropylene toughening is mainly the interpolation interpolymer at present, multipolymer as ethene and propylene, toughner, as terpolymer EP rubber (EPDM), ethylene-octene copolymer (POE), ethylene-propylene rubber(EPR) (EPR), styrene-butadiene-styrene block copolymer elastomericss such as (SBS), lost its intensity when being added in the toughness of significant raising goods but these are elastomeric, its intensity is descended significantly, simultaneously because the elastomerics price all compares expensive, institute is so that the rising of its cost, bring pressure to manufacturing enterprise, so in recent years, people consider to adopt the mode of mineral filler to improve polyacrylic intensity and toughness, but find by a large amount of reports, the general mineral filler of adopting or be the thicker talcum powder of particle or calcium carbonate, or be exactly the very thin nanometer inorganic filler of particle, these two kinds of addition manners have its corresponding disadvantage, first kind, though with low cost, can't bring into play its enhancing, toughness reinforcing effect is no advantage to the performance of goods; Second kind, because its particle particle is too thin, agglomeration often takes place, so can't bring into play the effect of its nano material, often need to find suitable dispersion agent to make nano-calcium carbonate to be scattered in the superpolymer uniformly.
Summary of the invention
The present invention is intended to be used to prepare a kind of impact-resistant polypropylene composite material by a kind of polypropylene reinforced plasticized modifier based on nano-calcium carbonate and other toughner etc.
A kind of preparation method of high-intensity high-tenacity polypropylene composite material is characterized in that may further comprise the steps:
Step 1, with following eight kinds of material component weighings by mass percentage, homo-polypropylene T30S is 10%～45%, Co-polypropylene K8303 is 10%～25%, Co-polypropylene 7726 is 15%～40%, ethylene-octene copolymer POE is 8%～16%, polypropylene strengthens, plasticized modifier is 5%～35%, the antioxidant 1010 pentaerythritol ester is 0.25%～0.55%, the lubricant oxidation polyethylene wax is 0.2%～0.5%, nucleator SKC-Y5988 dibenzal sorbitol derivative is 0.15%～0.4%, the material that weighing finishes is put into high-speed mixer, speed with 1000r/min is fully mixed, discharge material after two minutes, stand-by;
Step 2, will discharge the material that mixes from high-speed mixer and put into the twin screw extruder hopper, according to following processing parameter material will be extruded into composite material granular;
One section 200 ℃ of machine barrels, two sections 210 ℃ of machine barrels, three sections 216 ℃ of machine barrels, four sections 218 ℃ of machine barrels, five sections 220 ℃ of machine barrels, one section 215 ℃ of heads, engine speed are that 18r/min, feeding rotating speed are 12r/min.
According to the composite material granular of processing parameter extrusion moulding, then this composite material granular is injection molded into the detection exemplar of standard in the described step 2, temperature is that 23 degree humidity are to place after 24 hours in 50 percent the standard environment to detect mechanical property.
Beneficial effect: polypropylene composite material of the present invention, change polyacrylic crystalline state by components such as polypropylene reinforced plasticized modifier, ethylene-octene copolymer (POE), nucleators, thus mechanical properties such as the intensity of change matrix material, toughness.Composite by several homopolymerizations and Co-polypropylene, and in acrylic resin, add polypropylene reinforced plasticized modifier, remedied because the strength degradation that the adding of ethylene-octene copolymer (POE) causes, tensile toughness and the tough of goods have significantly been improved simultaneously, the adding of nucleator has changed polyacrylic crystalline state, can shorten the shaping cycle of material, reduce shrinking percentage, thereby obtain a kind of polypropylene composite material of high-intensity high-tenacity.The advantage of this material mechanical performance can make it be widely used in household electrical appliances, automobile and other industries.The mechanical property of its goods reaches fully or surpasses regulation in the respective country standard.
Embodiment
The more excellent mass percent of eight kinds of material components of the present invention is as follows: homo-polypropylene T30S is 20%, Co-polypropylene K8303 is 20%, Co-polypropylene 7726 is 30%, ethylene-octene copolymer (POE) is 14%, the DLTC-PP-100 polypropylene strengthens, plasticized modifier is 15%, antioxidant 1010 is 0.3%, lubricant is 0.35%, nucleator SKC-Y5988 is 0.35%, wherein oxidation inhibitor is pentaerythritol ester, lubricant is oxidized polyethlene wax, and nucleator is the dibenzal sorbitol derivative.
The preparation method of polypropylene composite material of the present invention may further comprise the steps:
(1) above-mentioned listed various materials are put into high-speed mixer after the weighing in proportion, fully mix with the speed of 1000r/min, discharge material after two minutes, stand-by;
(2) material that mixes is put in the twin screw extruder hopper, according to listed processing parameter material is extruded into composite material granular.
The expressing technique parameter of polypropylene composite material of the present invention sees Table 1.
Table 1
Embodiment 1:
(1) homo-polypropylene (T30S) 0.42Kg, Co-polypropylene (K8303) 0.21Kg, Co-polypropylene (7726) 0.21Kg, ethylene-octene copolymer (POE) 0.10Kg, polypropylene reinforced plasticized modifier 0.05Kg, nucleator (SKC-Y5988) 2g, oxidation inhibitor (1010) 5g, oxidized polyethlene wax 3g put into high-speed mixer, speed with 1000r/min is fully mixed, discharge material after two minutes, stand-by;
(2) material that mixes is put in the twin screw extruder hopper, according to above-mentioned processing parameter material is extruded into composite material granular, then this material is injection molded into the detection exemplar of standard, 23/50 standard environment (the 23/50th, the code name of state specified standards environment, expression temperature 23 degree, humidity 50) place after 24 hours in and detect mechanical property, its mechanical property the results are shown in Table 2.
Embodiment 2:
(1) homo-polypropylene (T30S) 0.35Kg, Co-polypropylene (K8303) 0.25Kg, Co-polypropylene (7726) 0.17Kg, ethylene-octene copolymer (POE) 0.12Kg, polypropylene reinforced plasticized modifier 0.10Kg, nucleator (SKC-Y5988) 2.5g, oxidation inhibitor (1010) 4.5g, oxidized polyethlene wax 3g put into high-speed mixer, speed with 1000r/min is fully mixed, discharge material after two minutes, stand-by;
(2) material that mixes is put in the twin screw extruder hopper, according to above-mentioned processing parameter material is extruded into composite material granular, then this material is injection molded into the detection exemplar of standard, 23/50 standard environment (the 23/50th, the code name of state specified standards environment, expression temperature 23 degree, humidity 50) place after 24 hours in and detect mechanical property, its mechanical property the results are shown in Table 2.
Embodiment 3:
(1) homo-polypropylene (T30S) 0.2Kg, Co-polypropylene (K8303) 0.2Kg, Co-polypropylene (7726) 0.3Kg, ethylene-octene copolymer (POE) 0.14Kg, polypropylene reinforced plasticized modifier 0.15Kg, nucleator (SKC-Y5988) 3g, oxidation inhibitor (1010) 3.5g, oxidized polyethlene wax 3.5g put into high-speed mixer, speed with 1000r/min is fully mixed, discharge material after two minutes, stand-by;
(2) material that mixes is put in the twin screw extruder hopper, according to above-mentioned processing parameter material is extruded into composite material granular, then this material is injection molded into the detection exemplar of standard, 23/50 standard environment (the 23/50th, the code name of state specified standards environment, expression temperature 23 degree, humidity 50) place after 24 hours in and detect mechanical property, its mechanical property the results are shown in Table 2.
Embodiment 4:
(1) homo-polypropylene (T30S) 0.10Kg, Co-polypropylene (K8303) 0.14Kg, Co-polypropylene (7726) 0.35Kg, ethylene-octene copolymer (POE) 0.15Kg, polypropylene reinforced plasticized modifier 0.25Kg, nucleator (SKC-Y5988) 3.5g, oxidation inhibitor (1010) 3g, oxidized polyethlene wax 3.5g put into high-speed mixer, speed with 1000r/min is fully mixed, discharge material after two minutes, stand-by;
(2) material that mixes is put in the twin screw extruder hopper, according to above-mentioned processing parameter material is extruded into composite material granular, then this material is injection molded into the detection exemplar of standard, 23/50 standard environment (the 23/50th, the code name of state specified standards environment, expression temperature 23 degree, humidity 50) place after 24 hours in and detect mechanical property, its mechanical property the results are shown in Table 2.
Figure GDA0000138927580000041

Claims (2)

1. the preparation method of a high-intensity high-tenacity polypropylene composite material is characterized in that may further comprise the steps:
Step 1, with following eight kinds of material component weighings by mass percentage, homo-polypropylene T30S is 10%～45%, Co-polypropylene K8303 is 10%～25%, Co-polypropylene 7726 is 15%～40%, ethylene-octene copolymer POE is 8%～16%, polypropylene strengthens, plasticized modifier is 5%～35%, the antioxidant 1010 pentaerythritol ester is 0.25%～0.55%, the lubricant oxidation polyethylene wax is 0.2%～0.5%, nucleator SKC-Y5988 dibenzal sorbitol derivative is 0.15%～0.4%, the material that weighing finishes is put into high-speed mixer, speed with 1000r/min is fully mixed, discharge material after two minutes, stand-by;
Step 2, will discharge the material that mixes from high-speed mixer and put into the twin screw extruder hopper, according to following processing parameter material will be extruded into composite material granular;
One section 200 ℃ of machine barrels, two sections 210 ℃ of machine barrels, three sections 216 ℃ of machine barrels, four sections 218 ℃ of machine barrels, five sections 220 ℃ of machine barrels, one section 215 ℃ of heads, engine speed are that 18r/min, feeding rotating speed are 12r/min.
2. the preparation method of a kind of high-intensity high-tenacity polypropylene composite material according to claim 1, it is characterized in that: in the described step 2 according to the composite material granular of processing parameter extrusion moulding, then this composite material granular is injection molded into the detection exemplar of standard, temperature is that 23 degree humidity are to place after 24 hours in 50 percent the standard environment to detect mechanical property.
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CN104788872A (en) * 2014-01-17 2015-07-22 汉达精密电子(昆山)有限公司 Polypropylene resin composition and product thereof
CN106693518A (en) * 2016-12-26 2017-05-24 浙江金鸟压滤机有限公司 Filter plate and production technology thereof
CN109370058A (en) * 2018-11-12 2019-02-22 天津柯文实业股份有限公司 A kind of polypropylene modified material and preparation method thereof
CN110128748A (en) * 2019-05-16 2019-08-16 苏州博利迈新材料科技有限公司 A kind of high-toughness polypropylene material and preparation method thereof
CN114621525A (en) * 2022-04-19 2022-06-14 北鸿科(天津)科技有限公司 Halogen-free flame-retardant reinforced polypropylene, preparation method and application in new energy field

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CN101693777B (en) * 2009-09-18 2011-08-24 苏州禾盛新型材料股份有限公司 Material for vehicle bumper and preparation method thereof

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