CN104004271A - Low-temperature-resistant polypropylene special material - Google Patents

Low-temperature-resistant polypropylene special material Download PDF

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Publication number
CN104004271A
CN104004271A CN201410238178.XA CN201410238178A CN104004271A CN 104004271 A CN104004271 A CN 104004271A CN 201410238178 A CN201410238178 A CN 201410238178A CN 104004271 A CN104004271 A CN 104004271A
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polypropylene
dedicated
obc
octene
compatilizer
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CN104004271B (en
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朱东升
张宝善
韩丹
孟富新
顾浦中
刘凤
徐贤安
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Jiangsu Kai Li Polymer Science And Technology Ltd
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Jiangsu Kai Li Polymer Science And Technology Ltd
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions 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
    • C08L23/10Homopolymers or copolymers of propene
    • C08L23/14Copolymers of propene
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00Making granules
    • B29B9/02Making granules by dividing preformed material
    • B29B9/06Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/92Measuring, controlling or regulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/9258Velocity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/92704Temperature
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/08Stabilised against heat, light or radiation or oxydation
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/08Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/24Crystallisation aids
    • C08L2205/242Beta spherulite nucleating agents

Abstract

The invention relates to a low-temperature-resistant polypropylene special material. The special material comprises the following components in percentage by weight: 60%-90% of co-polypropylene base material, 5%-20% of olefin block copolymer (OBC), 1%-6% of polypropylene heat-resistant toughening master batch, 2%-10% of compatilizer, 2%-4% of light screening agent, 0.2%-0.4% of antioxidant and 0.1%-0.2% of light stabilizer. According to the low-temperature-resistant polypropylene special material, a special polypropylene base material, a novel toughening agent and a special additive are taken as the materials, the ratio of the materials is reasonably adjusted, and a blending modification process is used, so that the polypropylene special material has excellent low-temperature applicability on the basis of meeting the German standard.

Description

A kind of low temperature resistant polypropylene dedicated material
Technical field
The present invention relates to a kind of polypropylene dedicated material, relate in particular to a kind of novel low temperature resistant anti-corrosion pipeline polypropylene dedicated material and preparation method thereof, belong to polymer composite preparation and manufacture field.
Background technology
Flourish along with China's oil chemical industry and Gas Industry, has all been used oil pipeline and gas pipe line both at home and abroad widely, for buried steel pipeline, first must solve the problem of protection and corrosion.The eighties in last century state extrapolated Layer polyethylene system preservative coat, three-decker consists of bottom epoxy powder, middle level sizing agent, outer polyolefine.In the mid-90, the long oil and gas pipeline of China has also adopted 3PE corrosion protection coating structure.Along with bearing the needs of various project constructions, people started gradually understanding and used 3PP corrosion protection coating in recent years.Because PP and PE processing characteristics are approximate, use 3PE service line can produce 3PP coating completely, do not need separately to build special 3PP coating line.And the advantage of 3PP coating in some performance, the field that it can not can be used as in 3PE coating plays a significant role, as the desert area higher in surface temperature, the sunshine duration is longer, high-pressure delivery field and complex-terrain geomorphic province etc.Patent CN1563171A discloses a kind of external antirot substance made from white polypropylene for steel tube buried under ground, and this patented material has significantly improved the temperature tolerance of preservative coat, can be applicable to high-temperature medium anti-corrosion pipeline.Patent CN1247684C discloses a kind of preparation method of white polypropylene anti-corrosion pipeline PP Pipe Compound, and its feature is also that polypropylene anti-corrosive material has resistance to elevated temperatures.Patent CN101717544A discloses a kind of black polypropylene anti-corrosive material and preparation method thereof, is characterized in that this black polypropylene anti-corrosive material has higher-dimension card and high rigidity.Although patent and technology that polypropylene anti-corrosive material is relevant are more, these polypropylene anti-corrosive materials all exist the suitability problem under low temperature environment.Therefore, limited 3PP anti-corrosion pipeline under low temperature environment and the large regional application of day and night temperature.Therefore, a kind of new technical scheme of exigence solves above-mentioned technical problem.
Summary of the invention
The present invention, just for the technical problem existing in prior art, provides a kind of low temperature resistant polypropylene dedicated material, and this PP Pipe Compound melt flow rate (MFR) is larger, and product has better processing characteristics.
To achieve these goals, the technical solution used in the present invention is as follows, and a kind of low temperature resistant polypropylene dedicated material, is characterized in that, described PP Pipe Compound comprises following feed composition and weight percent:
Co-polypropylene base-material 60%-90%
Olefin block copolymers (OBC) 5%-20%
The heat-resisting toughened master batch 1%-6% of polypropylene
Compatilizer 2%-10%
Photomask agent 2%-4%
Antioxidant 0.2%-0.4%
Photostabilizer 0.1%-0.2%.
As a modification of the present invention, described compatilizer is one or more the mixture in ethylene-octene thermoplastic elastomer grafted maleic anhydride (POE-g-MAH), ethylene-octene segmented copolymer grafted maleic anhydride (OBC-g-MAH).In this technical scheme, increased compatilizer, it is more tiny and even that the introducing of described compatilizer makes that olefin block copolymers disperses in acrylic resin, the brittle-ductile transition temperature that is conducive to improve the impact property of material and reduces material, also can keep the rigidity of material, the rigidity-toughness balanced of material is improved simultaneously.
As a modification of the present invention, described Co-polypropylene base-material is comprised of Co-polypropylene A and Co-polypropylene B, the ratio of described Co-polypropylene A and Co-polypropylene B is 5:4-5:1, polypropylene A is tubing level or the extrusion grade Co-polypropylene that melt flow rate (MFR) is less than 1.0g/min, and polypropylene B is the Co-polypropylene that melt flow rate (MFR) is less than 10.0g/min.In this technical scheme, two kinds of special Co-polypropylene have been selected, polypropylene A is tubing level or extrusion grade Co-polypropylene, can make polypropylene dedicated material meet existing German < < steel pipeline polypropylene coating > > standard, polypropylene B has higher melt flow rate (MFR) and low temperature impact properties, has guaranteed processing characteristics and low temperature suitability that PP Pipe Compound has had.
As a modification of the present invention, described olefin block copolymers (OBC) is ethylene-octene segmented copolymer, there are many block structures, soft section is the amorphous segment of high octene content, hard section is the few high crystalline segment of octene content, in described soft section, high octene content is 27%mol-28%mol, and described hard section of octene content is 1.4%mol-1.5%mol.In this technical scheme, add olefin block copolymers (OBC), make PP Pipe Compound there is better low temperature anti-impact toughness, there is resistance to elevated temperatures simultaneously, and processing characteristics is excellent.The cooperation of polypropylene B and olefin block copolymers can effectively improve the low-temperature flexibility of polypropylene dedicated material, makes polypropylene dedicated material meet the usability under cold condition.Simultaneously can be by regulating the proportioning of polypropylene A and polypropylene B to regulate the specific performance index of polypropylene dedicated material, as melt flow rate (MFR), tensile strength, elongation at break etc., thereby make the processing characteristics of polypropylene dedicated material and mechanical property reach optimization; By regulating the proportioning of polypropylene A, polypropylene B, olefin block copolymers, can make polypropylene dedicated material obtain good processing characteristics and low-temperature impact performance simultaneously.
As a modification of the present invention, the heat-resisting toughened master batch of described polypropylene is that to take polypropylene be the concentrated masterbatch that WBG-II is made as carrier adds rare-earth beta nucleator.Add the heat-resisting toughened master batch of polypropylene not only can further improve toughness and the heat-drawn wire of polypropylene dedicated material, reduce the rigidity loss of material simultaneously and reduce costs.
As a modification of the present invention, described photomask agent is one or more mixtures in nano zine oxide or nano titanium oxide or carbon black.Make PP Pipe Compound there is more excellent anti-ultraviolet function.
As a modification of the present invention, described antioxidant system comprises one or more composite in antioxidant 1010, antioxidant 1076, irgasfos 168, oxidation inhibitor DLTDP.Antioxidant system is selected from one or more the mixture in hindered amines, phosphorous acid esters, monothioester class, and as 1010,1076,168, DLTDP etc., antioxidant system has guaranteed that polypropylene dedicated material has satisfactory stability in processing use procedure.
As a modification of the present invention, described photostabilizer comprises one or more the mixture in photostabilizer 622, photostabilizer 944, photostabilizer 770, further guarantees the stability of PP Pipe Compound.
A low temperature resistant polypropylene dedicated material, is characterized in that, described PP Pipe Compound comprises following feed composition and weight percent:
Co-polypropylene base-material 50%-70%
Olefin block copolymers (OBC) 10%-20%
The heat-resisting toughened master batch 2%-5% of polypropylene
Compatilizer 6%-10%
Photomask agent 2%-6%
Antioxidant system 0.2%-0.3%
Photostabilizer 0.1%-0.2%.
As a modification of the present invention, described compatilizer is one or more the mixture in ethylene-octene thermoplastic elastomer grafted maleic anhydride (POE-g-MAH), ethylene-octene segmented copolymer grafted maleic anhydride (OBC-g-MAH).In this technical scheme, increased compatilizer, it is more tiny and even that the introducing of described compatilizer makes that olefin block copolymers disperses in acrylic resin, the brittle-ductile transition temperature that is conducive to improve the impact property of material and reduces material, also can keep the rigidity of material, the rigidity-toughness balanced of material is improved simultaneously.
As a modification of the present invention, described Co-polypropylene base-material is comprised of Co-polypropylene A and Co-polypropylene B, the ratio of described Co-polypropylene A and Co-polypropylene B is 5:4-5:1, polypropylene A is tubing level or the extrusion grade Co-polypropylene that melt flow rate (MFR) is less than 1.0g/min, and polypropylene B is the Co-polypropylene that melt flow rate (MFR) is less than 10.0g/min.In this technical scheme, two kinds of special Co-polypropylene have been selected, polypropylene A is tubing level or extrusion grade Co-polypropylene, can make polypropylene dedicated material meet existing German < < steel pipeline polypropylene coating > > standard, polypropylene B has higher melt flow rate (MFR) and low temperature impact properties, has guaranteed processing characteristics and low temperature suitability that PP Pipe Compound has had.
A preparation method for low temperature resistant polypropylene dedicated material after each feed composition is mixed by high mixer, by twin screw extruder extruding pelletization, obtains polypropylene dedicated material at 180 ℃-230 ℃.
With respect to prior art, advantage of the present invention is as follows, the present invention is by selecting the materials such as special polypropylene base-material, new type of toughening agent, characteristic auxiliary agent, rational allocation material proportion, use blending and modifying technique, polypropylene dedicated material is being met on the basis of German standard, have excellent low temperature suitability concurrently.By national standard and International Standards Method, test, compare and there is following outstanding behaviours with the anticorrosion polypropylene dedicated material of common pipe on market:
1) product has diversity, because the alternative of photomask agent is large, so can produce the product of black, white two kinds of different colours, can better meet the market requirement like this.
2) melt flow rate (MFR) is larger, and product has better processing characteristics.
3) low temperature (20 ℃) shock strength is by 3KJ/m 2bring up to 45 KJ/m 2, elongation at break is increased to 800% by 400%, has improved greatly the shock resistance of polypropylene dedicated material under cold condition.The anti-corrosion pipeline of being made by this polypropylene dedicated material is applicable to low temperature and the large area of day and night temperature, thereby expanded the use range of 3PP anti-corrosion pipeline.
4, this technical scheme cost is lower, is convenient to large-scale promotion and uses.
Embodiment
In order to deepen the understanding of the present invention and understanding, below in conjunction with embodiment, the invention will be further described and introduction.
embodiment 1:
By 50% Co-polypropylene A, 40% Co-polypropylene B, 5%OBC, 2% compatilizer, 2% photomask agent, the heat-resisting toughened master batch of 1% polypropylene, 0.1% antioxidant 1010,0.2% irgasfos 168, after 0.1% photostabilizer 622 adds high mixer to mix, through twin screw extruder extruding pelletization, material grain is dried 2h through 100 ℃ and is removed moisture.Temperature setting is set to 180 ℃-230 ℃, and rotating speed is set to 180r/min, the fundamental property of material grain: MI is 1.8g/10min(230 ℃, 2.16kg), tensile strength>=35MPa, elongation at break>=650%, normal temperature shock strength>=55KJ/m 2, low temperature (20 ℃) shock strength>=10 KJ/m 2.
 
embodiment 2:
By 50% Co-polypropylene A, 35% Co-polypropylene B, 8% OBC, 3% compatilizer, 2% photomask agent, the heat-resisting toughened master batch of 2% polypropylene, 0.2% antioxidant 1010,0.2% irgasfos 168, after 0.2% photostabilizer 622 adds high mixer to mix, through twin screw extruder extruding pelletization, material grain is dried 2h through 100 ℃ and is removed moisture.Temperature setting is set to 180 ℃-230 ℃, and rotating speed is set to 200r/min, the fundamental property of material grain: MI is 1.6g/10min(230 ℃, 2.16kg), tensile strength>=32MPa, elongation at break>=700%, normal temperature shock strength>=60KJ/m 2, low temperature (20 ℃) shock strength>=22KJ/m 2.
embodiment 3:
By 50% Co-polypropylene A, 30% Co-polypropylene B, 10% OBC, 5% compatilizer, 2% photomask agent, the heat-resisting toughened master batch of 3% polypropylene, 0.1% antioxidant 1010,0.2% irgasfos 168, after 0.1% photostabilizer 944 adds high mixer to mix, through twin screw extruder extruding pelletization, material grain is dried 2h through 100 ℃ and is removed moisture.Temperature setting is set to 180 ℃-230 ℃, and rotating speed is set to 220r/min, the fundamental property of material grain: MI is 1.5g/10min(230 ℃, 2.16kg), tensile strength>=30MPa, elongation at break>=700%, normal temperature shock strength>=65KJ/m 2, low temperature (20 ℃) shock strength>=30 KJ/m 2.
embodiment 4:
By 50% Co-polypropylene A, 25% Co-polypropylene B, 12%OBC, 6% compatilizer, 3% photomask agent, the heat-resisting toughened master batch of 4% polypropylene, 0.2% antioxidant 1010,0.2% irgasfos 168, after 0.2% photostabilizer 944 adds high mixer to mix, through twin screw extruder extruding pelletization, material grain is dried 2h through 100 ℃ and is removed moisture.Temperature setting is set to 180 ℃-230 ℃, and rotating speed is set to 250r/min, the fundamental property of material grain: MI is 1.3g/10min(230 ℃, 2.16kg), tensile strength>=28MPa, elongation at break>=750%, normal temperature shock strength>=68KJ/m 2, low temperature (20 ℃) shock strength>=36KJ/m 2.
 
embodiment 5:
By 50% Co-polypropylene A, 20% Co-polypropylene B, 15%OBC, 7% compatilizer, 3% photomask agent, the heat-resisting toughened master batch of 5% polypropylene, 0.1% antioxidant 1010,0.2% irgasfos 168, after 0.1% photostabilizer 770 adds high mixer to mix, through twin screw extruder extruding pelletization, material grain is dried 2h through 100 ℃ and is removed moisture.Temperature setting is set to 180 ℃-230 ℃, and rotating speed is set to 280r/min, the fundamental property of material grain: MI is 1.2g/10min(230 ℃, 2.16kg), tensile strength>=25MPa, elongation at break>=800%, normal temperature shock strength>=70KJ/m 2, low temperature (20 ℃) shock strength>=45KJ/m 2.
embodiment 6:
By 50% Co-polypropylene A, 10% Co-polypropylene B, 20%OBC, 10% compatilizer, 4% photomask agent, the heat-resisting toughened master batch of 6% polypropylene, 0.2% antioxidant 1010,0.2% irgasfos 168, after 0.2% photostabilizer 770 adds high mixer to mix, through twin screw extruder extruding pelletization, material grain is dried 2h through 100 ℃ and is removed moisture.Temperature setting is set to 180 ℃-230 ℃, and rotating speed is set to 300r/min, the fundamental property of material grain: MI is 1.0g/10min(230 ℃, 2.16kg), tensile strength>=22MPa, elongation at break>=820%, normal temperature shock strength>=70KJ/m 2, low temperature (20 ℃) shock strength>=45KJ/m 2.
embodiment 7:
By 35% Co-polypropylene A, 28% Co-polypropylene B, 20%OBC, 8% compatilizer, 4% photomask agent, the heat-resisting toughened master batch of 5% polypropylene, 0.2% antioxidant 1010,0.1% irgasfos 168, after 0.2% photostabilizer 770 adds high mixer to mix, through twin screw extruder extruding pelletization, material grain is dried 2h through 100 ℃ and is removed moisture.Temperature setting is set to 180 ℃-230 ℃, and rotating speed is set to 300r/min, the fundamental property of material grain: MI is 1.0g/10min(230 ℃, 2.16kg), tensile strength>=25MPa, elongation at break>=830%, normal temperature shock strength>=70KJ/m 2, low temperature (20 ℃) shock strength>=45KJ/m 2.
embodiment 8:
By 40% Co-polypropylene A, 30% Co-polypropylene B, 15%OBC, 7% compatilizer, 3% photomask agent, the heat-resisting toughened master batch of 5% polypropylene, 0.1% antioxidant 1010,0.1% irgasfos 168, after 0.2% photostabilizer 770 adds high mixer to mix, through twin screw extruder extruding pelletization, material grain is dried 2h through 100 ℃ and is removed moisture.Temperature setting is set to 180 ℃-230 ℃, and rotating speed is set to 300r/min, the fundamental property of material grain: MI is 1.0g/10min(230 ℃, 2.16kg), tensile strength>=23MPa, elongation at break>=825%, normal temperature shock strength>=70KJ/m 2, low temperature (20 ℃) shock strength>=45KJ/m 2.
embodiment 9:
By 45% Co-polypropylene A, 25% Co-polypropylene B, 13%OBC, 10% compatilizer, 4% photomask agent, the heat-resisting toughened master batch of 3% polypropylene, 0.1% antioxidant 1010,0.1% irgasfos 168, after 0.2% photostabilizer 770 adds high mixer to mix, through twin screw extruder extruding pelletization, material grain is dried 2h through 100 ℃ and is removed moisture.Temperature setting is set to 180 ℃-230 ℃, and rotating speed is set to 300r/min, the fundamental property of material grain: MI is 1.0g/10min(230 ℃, 2.16kg), tensile strength>=22MPa, elongation at break>=820%, normal temperature shock strength>=70KJ/m 2, low temperature (20 ℃) shock strength>=45KJ/m 2.
 
embodiment 10:
By 48% Co-polypropylene A, 22% Co-polypropylene B, 12%OBC, 9% compatilizer, 5% photomask agent, the heat-resisting toughened master batch of 4% polypropylene, 0.1% antioxidant 1010,0.1% irgasfos 168, after 0.1% photostabilizer 770 adds high mixer to mix, through twin screw extruder extruding pelletization, material grain is dried 2h through 100 ℃ and is removed moisture.Temperature setting is set to 180 ℃-230 ℃, and rotating speed is set to 300r/min, the fundamental property of material grain: MI is 1.0g/10min(230 ℃, 2.16kg), tensile strength>=23MPa, elongation at break>=830%, normal temperature shock strength>=70KJ/m 2, low temperature (20 ℃) shock strength>=45KJ/m 2.
                                                         
The tensile strength of low temperature resistant polypropylene dedicated material of the prior art is generally 20-28MPa, elongation at break 400-450%, normal temperature shock strength>=50KJ/m 2, low temperature (20 ℃) shock strength>=3 KJ/m 2.By above-described embodiment 1-embodiment 6, can find out, the fundamental property of the material grain of PP Pipe Compound is significantly better than PP Pipe Compound described in the prior art described in this technical scheme, and range of application is more extensive.
 
It should be noted that above-described embodiment, be not used for limiting protection scope of the present invention, the equivalents of having done on the basis of technique scheme or substitute and all to fall into the scope that the claims in the present invention are protected.

Claims (10)

1. a low temperature resistant polypropylene dedicated material, is characterized in that, described PP Pipe Compound comprises following feed composition and weight percent:
Co-polypropylene base-material 60%-90%
Olefin block copolymers (OBC) 5%-20%
The heat-resisting toughened master batch 1%-6% of polypropylene
Compatilizer 2%-10%
Photomask agent 2%-4%
Antioxidant 0.2%-0.4%
Photostabilizer 0.1%-0.2%.
2. polypropylene dedicated material according to claim 1, is characterized in that: described compatilizer is one or more the mixture in ethylene-octene thermoplastic elastomer grafted maleic anhydride (POE-g-MAH), ethylene-octene segmented copolymer grafted maleic anhydride (OBC-g-MAH).
3. polypropylene dedicated material according to claim 1 and 2, it is characterized in that: described Co-polypropylene base-material is comprised of Co-polypropylene A and Co-polypropylene B, the ratio of described Co-polypropylene A and Co-polypropylene B is 5:4-5:1, polypropylene A is tubing level or the extrusion grade Co-polypropylene that melt flow rate (MFR) is less than 1.0g/min, and polypropylene B is the Co-polypropylene that melt flow rate (MFR) is less than 10.0g/min.
4. polypropylene dedicated material according to claim 3, it is characterized in that: described olefin block copolymers (OBC) is ethylene-octene segmented copolymer, there are many block structures, soft section is the amorphous segment of high octene content, hard section is the few high crystalline segment of octene content, in described soft section, high octene content is 27%mol-28%mol, and described hard section of octene content is 1.4%mol-1.5%mol.
5. polypropylene dedicated material according to claim 4, is characterized in that: the heat-resisting toughened master batch of described polypropylene is that to take polypropylene be the concentrated masterbatch that WBG-II is made as carrier adds rare-earth beta nucleator.
6. according to the polypropylene dedicated material described in claim 4 or 5, it is characterized in that: described photomask agent is one or more mixtures in nano zine oxide or nano titanium oxide or carbon black.
7. a low temperature resistant polypropylene dedicated material, is characterized in that, described PP Pipe Compound comprises following feed composition and weight percent:
Co-polypropylene base-material 50%-70%
Olefin block copolymers (OBC) 10%-20%
The heat-resisting toughened master batch 2%-5% of polypropylene
Compatilizer 6%-10%
Photomask agent 2%-6%
Antioxidant system 0.2%-0.3%
Photostabilizer 0.1%-0.2%.
8. polypropylene dedicated material according to claim 7, is characterized in that: described compatilizer is one or more the mixture in ethylene-octene thermoplastic elastomer grafted maleic anhydride (POE-g-MAH), ethylene-octene segmented copolymer grafted maleic anhydride (OBC-g-MAH).
9. according to the polypropylene dedicated material described in claim 7 or 8, it is characterized in that: described Co-polypropylene base-material is comprised of Co-polypropylene A and Co-polypropylene B, the ratio of described Co-polypropylene A and Co-polypropylene B is 5:4-5:1, polypropylene A is tubing level or the extrusion grade Co-polypropylene that melt flow rate (MFR) is less than 1.0g/min, and polypropylene B is the Co-polypropylene that melt flow rate (MFR) is less than 10.0g/min.
10. according to the preparation method of the polypropylene dedicated material described in claim 1-9 any one, it is characterized in that: after each feed composition is mixed by high mixer, Temperature Setting is at 180 ℃-230 ℃, screw speed is set as passing through twin screw extruder extruding pelletization under 180-300 rev/min of condition, obtains polypropylene dedicated material.
CN201410238178.XA 2014-06-02 2014-06-02 A kind of low temperature resistant polypropylene dedicated material Active CN104004271B (en)

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CN105623073A (en) * 2014-10-27 2016-06-01 中国石油天然气股份有限公司 Method for improving properties of polypropylene material or product thereof
CN106543386A (en) * 2015-09-16 2017-03-29 中国石化扬子石油化工有限公司 A kind of high cold-resistant cold water pipe block polypropylene, its preparation method and the composition comprising it
CN105385088A (en) * 2015-11-02 2016-03-09 金发科技股份有限公司 Polypropylene composition and preparation method thereof
CN106633412A (en) * 2015-11-02 2017-05-10 株洲时代新材料科技股份有限公司 High-elongation-at-break polypropylene composition and preparation method thereof
CN105385088B (en) * 2015-11-02 2018-08-21 金发科技股份有限公司 A kind of polypropene composition and preparation method thereof
CN107304272A (en) * 2016-04-25 2017-10-31 上海田强环保科技有限公司 A kind of Turnover Box is low temperature resistant material modified
CN106589619A (en) * 2016-11-30 2017-04-26 浙江中财管道科技股份有限公司 Multi-element toughened and modified special material for PP-R pipe and preparation method thereof
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WO2018121659A1 (en) * 2016-12-31 2018-07-05 广州鹿山新材料股份有限公司 Polypropylene powder for external layer of 3pp anti-corrosive pipeline coating and preparation method therefor
CN108424575A (en) * 2017-02-14 2018-08-21 万宁 A kind of method for toughening of PP materials
CN107177105A (en) * 2017-07-21 2017-09-19 安徽江淮汽车集团股份有限公司 A kind of weather-proof PP composites of antibacterial and preparation method thereof
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