CN103665557A - Low-temperature-resistant reinforced modified PP composite material and preparation method thereof - Google Patents

Low-temperature-resistant reinforced modified PP composite material and preparation method thereof Download PDF

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Publication number
CN103665557A
CN103665557A CN201310657908.5A CN201310657908A CN103665557A CN 103665557 A CN103665557 A CN 103665557A CN 201310657908 A CN201310657908 A CN 201310657908A CN 103665557 A CN103665557 A CN 103665557A
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CN
China
Prior art keywords
matrix material
low temperature
temperature resistant
enhancing modified
preparation
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Pending
Application number
CN201310657908.5A
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Chinese (zh)
Inventor
赵成方
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QINGDAO DADU NEW MATERIAL SCIENCE & TECHNOLOGY Co Ltd
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QINGDAO DADU NEW MATERIAL SCIENCE & TECHNOLOGY Co Ltd
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Priority to CN201310657908.5A priority Critical patent/CN103665557A/en
Publication of CN103665557A publication Critical patent/CN103665557A/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
    • C08L23/14—Copolymers of propene
    • 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
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • 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
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

The invention belongs to the technical field of plastic modification, and especially relates to a low-temperature-resistant reinforced modified PP composite material and a preparation method thereof. The PP composite material is composed of the following compositions in percent by mass: 25%-40% of homopolymerized PP, 30%-49% of copolymerized PP, 15%-25% of talcum powder, 10%-20% of a cold-resistant agent and the balance processing auxiliary agents which comprise an anti-oxidant, a lubricant and/or a coupling agent. The preparation method comprises blending, extrusion and granulation. The composite material provided by the invention is capable of possessing good toughness under a low-temperature condition and satisfies the usage requirements of PP composite materials at a relatively low temperature.

Description

A kind of low temperature resistant enhancing modified PP matrix material and preparation method thereof
Technical field
The invention belongs to modifying plastics technical field, particularly relate to a kind of low temperature resistant enhancing modified PP matrix material and preparation method thereof.
Background technology
Polypropylene (PP) is a kind of versatility Plastic Resin of originating wide, cheap, has purposes very widely.Its degree of crystallinity is high, compound with regular structure, thereby there is good mechanical property.The absolute value of Mechanical Properties of PP is higher than polyethylene, but in plastic material, still belongs to kind on the low side, and its tensile strength only can reach 30 MPa or slightly high level.The polypropylene that isotactic index is larger has higher tensile strength, but with the raising of isotactic index, the shock strength of material declines to some extent, but no longer changes after dropping to a certain numerical value.
Temperature and loading rate are very large to polyacrylic Toughness.When temperature is during higher than second-order transition temperature, impact fracture is ductile rupture, lower than second-order transition temperature, is brittle rupture, and impact value significantly declines.Improve loading rate, can make the temperature that ductile rupture changes to brittle rupture increase.
Polypropylene has excellent counter-bending fatigability, its goods bent 106 times and do not damage at normal temperatures.
But under room temperature and low temperature, because the molecular structure regularity of itself is high, so resistance to impact shock is poor, therefore limited its use.
The polypropylene composite of using in automobile at present generally adopts mineral fillers such as adding talcum powder to increase its rigidity and thermotolerance, adds toughness and lower temperature resistance that rubber improves material simultaneously; In recent years, there is the development that some are new in the mechanism that PP is toughness reinforcing and method, as by adding beta nucleater, PP is carried out to morphology Control modification, and then change its crystal formation, thereby reach the object that increases toughness, for the development of the toughening technology of PP matrix material provides new possibility, the novel method > > of a < < toughness reinforcing enhancing PP matrix material of announcing as Chinese invention patent application specification sheets CN 102070826;
But aforesaid method of the prior art all can not meet service requirements, the collision bumper on automobile, dashboard parts all particularly, shock resistance to material under low temperature is had relatively high expectations, therefore study formula and the preparation of low temperature resistant enhancing PP matrix material, for the performance that improves product, have great importance with the range of application that expands product.
Summary of the invention
For addressing the above problem, the object of the present invention is to provide a kind of low temperature resistant enhancing modified PP matrix material, make it under cold condition, still can keep good toughness, meet the service requirements at a lower temperature of PP matrix material; Another object of the present invention is to provide the preparation method of this PP matrix material.
Technical scheme provided by the invention is: a kind of low temperature resistant enhancing modified PP matrix material, and its component by following mass percent forms: homopolymerization PP 25%-40%, copolymerization PP 30%-49%, talcum powder 15%-25%, cold-resistant agent 10%-20%, processing aid is surplus; Wherein said processing aid is oxidation inhibitor, lubricant and/or coupling agent.
Optimize, described homopolymerization PP adopts T30S.
Optimize, described copolymerization PP adopts F800E.
Optimize, described cold-resistant agent adopts hexanodioic acid dibutyl ester, diisodecyl adipate, dioctyl azelate or dioctyl sebacate.
Optimize, oxidation inhibitor adopts four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester.
The preparation method of above-mentioned low temperature resistant enhancing modified PP matrix material provided by the invention, comprise the steps: first each component according to mass percent homogenizer stirring and evenly mixing, then proceed in twin screw extruder and melt extrude, cooling, last granulation can make product.
Optimize, raw material stirs 5-10min in homogenizer.
Optimize, finally by granulation, make cylindrical pellet product.
Optimize, while extruding, the barrel temperature of twin screw extruder is: back segment 200-210 ℃, stage casing 210-220 ℃, leading portion 220-225 ℃, head temperature 225-230 ℃.
Beneficial effect of the present invention is:
1, matrix material provided by the invention has excellent lower temperature resistance, at-40 ℃, still can show good toughness
2, matrix material provided by the invention combined by homopolymerization PP and copolymerization PP, coordinate suitable additive, time it has had mobility, impact and three kinds of high-performance of intensity concurrently, and obtain good balance.
3, matrix material provided by the invention can be used on the strict trolley part of low temperature requirement or family expenses parts, has met the service requirements to material, has expanded its range of application.
Embodiment
Below by embodiment, further illustrate the present invention.
The technical scheme that present embodiment provides is: a kind of low temperature resistant enhancing modified PP matrix material, its component by following mass percent forms: homopolymerization PP 25%-40%, copolymerization PP 30%-49%, talcum powder 15%-25%, cold-resistant agent 10%-20%, processing aid is surplus; Wherein said processing aid is oxidation inhibitor, lubricant and/or coupling agent.
Wherein, described homopolymerization PP adopts T30S.
Wherein, described copolymerization PP adopts F800E.
Wherein, described cold-resistant agent adopts hexanodioic acid dibutyl ester, diisodecyl adipate, dioctyl azelate or dioctyl sebacate.
Wherein, oxidation inhibitor adopts four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester.
The preparation method of the above-mentioned low temperature resistant enhancing modified PP matrix material that present embodiment provides, comprise the steps: first each component according to mass percent homogenizer stirring and evenly mixing, then proceed in twin screw extruder and melt extrude, cooling, last granulation can make product.
Wherein, raw material stirs 5-10min in homogenizer.
Wherein, finally by granulation, make cylindrical pellet product.
Wherein, while extruding, the barrel temperature of twin screw extruder is: back segment 200-210 ℃, stage casing 210-220 ℃, leading portion 220-225 ℃, head temperature 225-230 ℃.
For further illustrating the present invention, present embodiment provides three samples, is designated as sample 1-3, and concrete component, mass percent be in Table 1, and three embodiment have been carried out to the multiaxis shock test under differing temps, by outcome record in table 2.
Table 1
? Sample 1 Sample 2 Sample 3
Homopolymerization PP T30S 25% 34% 40%
Copolymerization PP F800E 49% 40% 34%
Talcum powder 15% 15% 15%
Hexanodioic acid dibutyl ester 10% 10% 10%
Antioxidant 1010 0.3% 0.3% 0.3%
Lubricant 0.3% 0.3% 0.3%
Coupling agent 0.4% 0.4% 0.4%
Table 2
Multiaxis impacts Sample 1 Sample 2 Sample 3
23℃ Ductile rupture Ductile rupture Ductile rupture
0℃ Ductile rupture Ductile rupture Ductile rupture
-40℃ Ductile rupture Ductile rupture Ductile rupture
Known by upper table contrast, the PP matrix material that present embodiment provides all can keep good toughness in room temperature to the environment of low temperature, and temperature is minimum is low to moderate-40 ℃.
In sum, the feature of present embodiment is:
The matrix material that present embodiment provides has excellent lower temperature resistance, at-40 ℃, still can show good toughness
The matrix material that present embodiment provides is combined by homopolymerization PP and copolymerization PP, coordinate suitable additive, time it has had mobility, impact and three kinds of high-performance of intensity concurrently, and obtain good balance.
The matrix material that present embodiment provides can be used in low temperature is required, on strict trolley part or family expenses parts, to have met the service requirements to material, has expanded its range of application.

Claims (9)

1. a low temperature resistant enhancing modified PP matrix material, is characterized in that: its component by following mass percent forms: homopolymerization PP 25%-40%, and copolymerization PP 30%-49%, talcum powder 15%-25%, cold-resistant agent 10%-20%, processing aid is surplus; Wherein said processing aid is oxidation inhibitor, lubricant and/or coupling agent.
2. low temperature resistant enhancing modified PP matrix material according to claim 1, is characterized in that: described homopolymerization PP adopts T30S.
3. low temperature resistant enhancing modified PP matrix material according to claim 2, is characterized in that: described copolymerization PP adopts F800E.
4. low temperature resistant enhancing modified PP matrix material according to claim 3, is characterized in that: described cold-resistant agent adopts hexanodioic acid dibutyl ester, diisodecyl adipate, dioctyl azelate or dioctyl sebacate.
5. low temperature resistant enhancing modified PP matrix material according to claim 4, is characterized in that: oxidation inhibitor adopts four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester.
6. according to the preparation method of the low temperature resistant enhancing modified PP matrix material described in claim 1-5 any one, it is characterized in that: comprise the steps: first each component according to mass percent homogenizer stirring and evenly mixing, then proceed in twin screw extruder and melt extrude, cooling, last granulation can make product.
7. the preparation method of low temperature resistant enhancing modified PP matrix material according to claim 6, is characterized in that: raw material stirs 5-10min in homogenizer.
8. the preparation method of low temperature resistant enhancing modified PP matrix material according to claim 7, is characterized in that: finally by granulation, make cylindrical pellet product.
9. according to the preparation method of the low temperature resistant enhancing modified PP matrix material described in claim 7-8 any one, it is characterized in that: while extruding, the barrel temperature of twin screw extruder is: back segment 200-210 ℃, stage casing 210-220 ℃, leading portion 220-225 ℃, head temperature 225-230 ℃.
CN201310657908.5A 2013-12-09 2013-12-09 Low-temperature-resistant reinforced modified PP composite material and preparation method thereof Pending CN103665557A (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104086882A (en) * 2014-07-03 2014-10-08 合肥杰事杰新材料股份有限公司 Application of needle-like wollastonite served as polypropylene cold-resistant agent and cold-resistant polypropylene material containing needle-like wollastonite
CN108864563A (en) * 2018-05-24 2018-11-23 杨传平 A kind of high intensity increasing tougheness MODIFIED PP plastics and preparation process

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104086882A (en) * 2014-07-03 2014-10-08 合肥杰事杰新材料股份有限公司 Application of needle-like wollastonite served as polypropylene cold-resistant agent and cold-resistant polypropylene material containing needle-like wollastonite
CN104086882B (en) * 2014-07-03 2019-03-29 合肥杰事杰新材料股份有限公司 A kind of cold-resistant polypropylene material of the acicular wollastonite as the purposes of Polypropylene cold-resistant agent and containing the acicular wollastonite
CN108864563A (en) * 2018-05-24 2018-11-23 杨传平 A kind of high intensity increasing tougheness MODIFIED PP plastics and preparation process

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