CN106589619A - Multi-element toughened and modified special material for PP-R pipe and preparation method thereof - Google Patents
Multi-element toughened and modified special material for PP-R pipe and preparation method thereof Download PDFInfo
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- CN106589619A CN106589619A CN201611082359.3A CN201611082359A CN106589619A CN 106589619 A CN106589619 A CN 106589619A CN 201611082359 A CN201611082359 A CN 201611082359A CN 106589619 A CN106589619 A CN 106589619A
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- 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
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- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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Abstract
The invention discloses a multi-element toughened and modified special material for a PP-R pipe. The multi-element toughened and modified special material for the PP-R pipe comprises, by weight, 85-95 parts of PP-R resin, 1-5 parts of a toughening agent I, 2-5 parts of a toughening agent II, and 2-5 parts of inorganic rigid particles; the PP-R resin is a III type polypropylene randon coplymer and comprises natural color granules, colored granules and powder materials; main components in the toughening agent I, the toughening agent II and the inorganic rigid particles are all PP-R resin; the toughening agent I further comprises a beta nucleating agent; the toughening agent II further comprises elastomer and compatilizer; and the inorganic rigid particles further comprise inorganic rigid powder materials. The invention further provides a preparation method of the multi-element toughened and modified special material for the PP-R pipe; by preparing the toughening agent I, the toughening agent II and the inorganic rigid particles, then the low temperature toughed special material for the pipe is prepared in a compositing manner, and the method is simple. The special material for the PP-R pipe has a good toughening effect, the hydraulic performance of the pipe is not lowered, the rigidity of the pipe is improved, and good application prospects are achieved.
Description
【Technical field】
The present invention relates to the technical field of macromolecular material, more particularly to a kind of PP-R pipe of polynary toughening modifying is special
Material and preparation method thereof.
【Background technology】
Atactic copolymerized polypropene (PP-R) is to be entered the type III developed in polypropylene (PP) main chain by vinyl monomer random copolymerization
Polypropylene, its own excellent performance, in being widely used in each field of national product.Wherein, the tubing for being prepared with PP-R has
The excellent combination properties such as pyroconductivity is low, high temperature resistant, corrosion-resistant, heat-fusible welding, it is adaptable to house house ornamentation, office building, city
The hot and cold water transportation art such as political affairs.At home in hot water pipe demand, polypropylene pipe accounts for more than 50%, it has also become domestic pipeline
One of topmost material in field.Additionally, PP-R is compared with other plastic pipes, durability, application in tubing, can return
Receive usability, the convenience of processing and wholesomeness aspect and there is very big advantage.However, because PP-R is hemicrystalline material,
Based on alpha-crystal, alpha-crystal is radial, and crystal grain is larger, and spacing is little between crystal, and " rigidity " contact easily occurs, and causes material internal
There is larger internal stress；And, under cryogenic (0 DEG C of ＜), polypropylene molecular chain dyskinesia, deteriorated flexibility.So,
When cryogenic conditions are to use, PP-R pipes are susceptible to non-plastic fracture, and this limits to a certain extent its range of application.Cause
This, solves the problems, such as the black brittleness of PP-R, with realistic meaning.
At present, the method for improving PP toughness is more, mainly has chemical modification, physical modification and by changing processing mode etc.
Method.Wherein, physical modification is relative to other two kinds of toughening modifying methods, with low cost, simple production process, it is easy to accomplish
The characteristics of, therefore be widely used.Physical modification method mainly realizes that toughener includes by adding toughener in PP-R base materials
Elastomer, nucleater modified, inorganic toughening material, flexible polymer etc., but one or two materials therein are simply adopted,
Its low temperature toughening effect is limited, can not really improve PP-R fragility under cryogenic, or can realize to a certain extent
The low temperature toughening effect of tubing, but the resistance to elevated temperatures of tubing is poor, is only used for cold water pipe, it is impossible to hot-water line is used as (such as PP-B
Toughening modifying tubing).Additionally, the rigidity of material declines obvious, the tubing hydraulic pressure resistant intensity decreases of preparation after toughness reinforcing, it is impossible to real
Reach the purpose for lifting PP-R pipe combination property.
In consideration of it, the deficiency to improve existing method of modifying, the present invention adopts the thinking of multicomponent system toughness reinforcing, using new
Material modified interworking, the complementation and collaboration for realizing storeroom performance is lifted, real on the premise of the low-temperature flexibility of PP-R is increased
The lifting of existing PP-R combination properties.
【The content of the invention】
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, there is provided a kind of PP-R pipe of polynary toughening modifying
PP Pipe Compound and preparation method thereof, when it aims to solve the problem that PP-R pipes are used under cryogenic in prior art, is susceptible to fragility
Rupture, the scope of application is limited, and current toughening modifying method can not be really achieved the purpose for lifting PP-R pipe combination property
Technical problem.
For achieving the above object, the present invention proposes a kind of PP-R pipe PP Pipe Compound of polynary toughening modifying, by weight
Number meter, comprising following components：85～95 parts of PP-R resins；1～5 part of toughener I；2～5 parts of toughener II；Inorganic rigid grain
2～5 parts of son, described PP-R resins are type III atactic copolymerized polypropene, including true qualities pellet, coloured pellet and powder, described
Toughener I, toughener II and inorganic rigid particle in main component be PP-R resins, also contain in described toughener I
There is beta nucleater, also containing elastomer and bulking agent in described toughener II, also containing inorganic in described inorganic rigid particle
Rigid powder body material.
Preferably, based on the toughener I of 100 parts of parts by weight, wherein PP-R resin contents are 90～99 parts, β nucleation
Agent content is 1～10 part.
Preferably, described beta nucleater is TMB series compounds, CHB-5 compounds, NU-100 compounds and NABization
Compound, terres rares beta nucleater are WGB series compounds, organic acid beta nucleater is DCHT compounds, different diacid hydrazine and pungent two
One or more combination in acid.
Preferably, based on the toughener II of 100 parts of parts by weight, wherein PP-R resin contents are 60～90 parts, elasticity
Body content is 5～20 parts, and Compatibilizer Content is 5～20 parts.
Preferably, described elastomer be ethylene-octene copolymer (POE), olefin block copolymers (OBC), ethene-
One or more combination in acetate ethylene copolymer (EVA), styrene-butadiene block copolymer (SBS), described increase-volume
Agent is the one kind in PP base olefin block copolymers, the PP of modified by maleic acid anhydride graft.
Preferably, based on the inorganic rigid particle of 100 parts of parts by weight, wherein PP-R resin contents are 80～95 parts,
Inorganic rigid powder body material content is 5～20 parts.
Preferably, described inorganic rigid powder body material is CaCO3、SiO2, SiC whiskers, Al2O3, kaolin, glass
One or several combinations in microballon.
A kind of preparation method of the PP-R pipe PP Pipe Compound of polynary toughening modifying, comprises the following steps：
A toughener I, toughener II and inorganic rigid particle), are prepared：
A1) the preparation of toughener I：Choose TMB series compounds, CHB-5 compounds, NU-100 compounds and NAB chemical combination
Thing, terres rares beta nucleater are WGB series compounds, organic acid beta nucleater is DCHT compounds, different diacid hydrazine and suberic acid
In one or more as beta nucleater, be sufficiently pre-mixed in proportion with PP-R resins, then premix is placed in double
In screw extruder pelletizer, blending shaping, cooling, pelletizing are carried out, obtain toughener I, it is standby；
A2) the preparation of toughener II：One or more in POE, OBC, EVA, SBS elastomer are chosen as elastomer,
PP base olefin block copolymers, the one kind in the PP of modified by maleic acid anhydride graft are chosen as bulking agent, with PP-R resins press than
Example is sufficiently pre-mixed, and then premix is placed in double-screw extruding pelletizing machine, carries out blending shaping, cooling, pelletizing,
Toughener II is obtained, it is standby；
A3) the preparation of inorganic rigid particle：Choose CaCO3、SiO2, SiC whiskers, Al2O3, kaolin, in glass microballoon
One or more are sufficiently pre-mixed by a certain percentage as inorganic rigid powder body material with PP-R resins, then will be pre-
Batch mixing is placed in double-screw extruding pelletizing machine, carries out blending shaping, cooling, pelletizing, obtains inorganic rigid particle, standby；
B low temperature toughness reinforcing special material for tube) is prepared：Previously prepared toughener I, toughener II, inorganic rigid particle are pressed
Certain proportion is sufficiently pre-mixed with PP-R resins, and then premix is placed in double-screw extruding pelletizing machine, is squeezed
Go out stretching, cooling, pelletizing, obtain low temperature toughness reinforcing special material for tube.
Preferably, described step a1) in beta nucleater and PP-R resins abundant premixing, refer to using mixed at a high speed
Conjunction machine, double screw extruder make beta nucleater be uniformly dispersed in PP-R materials；Described step a2) elastomer, bulking agent
With the abundant premixing of PP-R resins, refer to and elastomer, bulking agent is uniformly divided using high-speed mixer, double screw extruder
In being dispersed in PP-R materials；Described step a3) in inorganic rigid powder body material and PP-R resins abundant premixing, refer to employing
High-speed mixer, double screw extruder make inorganic rigid material be uniformly dispersed in PP-R materials.
Preferably, described step B) in prepare low temperature toughness reinforcing special material for tube Screw Extrusion temperature be 170～260
DEG C, Screw Extrusion rotating speed is 20～80r/min.
Beneficial effects of the present invention：Compared with prior art, the PP-R pipes of a kind of polynary toughening modifying that the present invention is provided
Material PP Pipe Compound and preparation method thereof, in low temperature toughness reinforcing special material for tube, the addition of beta nucleater is conducive to forming β in induction PP-R
The characteristics of crystalline substance, and β is brilliant has crystal grain loose, anisotropy, α can be overcome brilliant due to coarse grains, PP- caused by every institute in the same direction
R materials internal stress is big, the problem of poor toughness；Adding for elastomer can form the toughening effect for cooperateing with beta nucleater, using elasticity
The high storage modulus feature of body, absorbs the energy to tubing impact, realizes the toughness reinforcing of tubing；Meanwhile, Tao Shi elastomer bulking agents
Addition be conducive to improving the compatibility between elastomer and PP-R base materials, improve interface performance.Additionally, inorganic rigid particle plus
Enter, the rigid decline problem that PP-R is brought due to toughness reinforcing can be effectively improved, by above-mentioned composite modified, realize PP-R combination properties
Lifting.
The feature and advantage of the present invention will be described in detail by embodiment.
【Specific embodiment】
To make the object, technical solutions and advantages of the present invention of greater clarity, below by embodiment, the present invention is entered
Row is further described.However, it should be understood that specific embodiment described herein is only to explain the present invention, and without
In restriction the scope of the present invention.Additionally, in the following description, the description to known features and technology is eliminated, so that avoid need not
Obscure idea of the invention in strategic point.
The embodiment of the present invention provides a kind of PP-R pipe PP Pipe Compound of polynary toughening modifying, counts by weight, comprising with
Lower component：85～95 parts of PP-R resins；1～5 part of toughener I；2～5 parts of toughener II；2～5 parts of inorganic rigid particle, institute
The PP-R resins stated are type III atactic copolymerized polypropene, including true qualities pellet, coloured pellet and powder, described toughener I,
Main component in toughener II and inorganic rigid particle is PP-R resins, and in described toughener I beta nucleater is also contained,
Also containing elastomer and bulking agent in described toughener II, inorganic rigid powder material is also contained in described inorganic rigid particle
Material.
Specifically, based on the toughener I of 100 parts of parts by weight, wherein PP-R resin contents are 90～99 parts, beta nucleater
Content is 1～10 part；Based on the toughener II of 100 parts of parts by weight, wherein PP-R resin contents are 60～90 parts, and elastomer contains
Measure as 5～20 parts, Compatibilizer Content is 5～20 parts；Based on the inorganic rigid particle of 100 parts of parts by weight, wherein PP-R resins
Content is 80～95 parts.
Further, beta nucleater be TMB series compounds, CHB-5 compounds, NU-100 compounds and NAB compounds,
Terres rares beta nucleater is WGB series compounds, organic acid beta nucleater in DCHT compounds, different diacid hydrazine and suberic acid
One or more combination；Elastomer is ethylene-octene copolymer (POE), olefin block copolymers (OBC), ethene-vinyl acetate
One or more combination in copolymer (EVA), styrene-butadiene block copolymer (SBS), described bulking agent is PP bases
One kind in olefin block copolymers, the PP of modified by maleic acid anhydride graft；Inorganic rigid powder body material content is 5～20 parts, institute
The inorganic rigid powder body material stated is CaCO3、SiO2, SiC whiskers, Al2O3, kaolin, one or several in glass microballoon
Combination
In embodiments of the present invention, bulking agent is Tao Shi PP base olefin block copolymers.
The embodiment of the present invention also provides a kind of preparation method of the PP-R pipe PP Pipe Compound of polynary toughening modifying, including following
Step：
A toughener I, toughener II and inorganic rigid particle), are prepared：
A1) the preparation of toughener I：Choose TMB series compounds, CHB-5 compounds, NU-100 compounds and NAB chemical combination
Thing, terres rares beta nucleater are WGB series compounds, organic acid beta nucleater is DCHT compounds, different diacid hydrazine and suberic acid
In one or more as beta nucleater, be sufficiently pre-mixed in proportion with PP-R resins, then premix is placed in double
In screw extruder pelletizer, blending shaping, cooling, pelletizing are carried out, obtain toughener I, it is standby.
Wherein, beta nucleater and the abundant premixing of PP-R resins, to refer to and make β using high-speed mixer, double screw extruder
Nucleator is uniformly dispersed in PP-R materials.
A2) the preparation of toughener II：One or more in POE, OBC, EVA, SBS elastomer are chosen as elastomer,
PP base olefin block copolymers, the one kind in the PP of modified by maleic acid anhydride graft are chosen as bulking agent, with PP-R resins press than
Example is sufficiently pre-mixed, and then premix is placed in double-screw extruding pelletizing machine, carries out blending shaping, cooling, pelletizing,
Toughener II is obtained, it is standby.
Wherein, the abundant premixing of elastomer, bulking agent and PP-R resins, is referred to and is squeezed using high-speed mixer, twin-screw
Going out machine makes elastomer, bulking agent be uniformly dispersed in PP-R materials.
A3) the preparation of inorganic rigid particle：Choose CaCO3、SiO2, SiC whiskers, Al2O3, kaolin, in glass microballoon
One or more are sufficiently pre-mixed by a certain percentage as inorganic rigid powder body material with PP-R resins, then will be pre-
Batch mixing is placed in double-screw extruding pelletizing machine, carries out blending shaping, cooling, pelletizing, obtains inorganic rigid particle, standby.
Wherein, inorganic rigid powder body material and the abundant premixing of PP-R resins, refer to using high-speed mixer, twin-screw
Extruder makes inorganic rigid material be uniformly dispersed in PP-R materials.
B low temperature toughness reinforcing special material for tube) is prepared：Previously prepared toughener I, toughener II, inorganic rigid particle are pressed
Certain proportion is sufficiently pre-mixed with PP-R resins, and then premix is placed in double-screw extruding pelletizing machine, is squeezed
Go out stretching, cooling, pelletizing, obtain low temperature toughness reinforcing special material for tube.
Wherein, the Screw Extrusion temperature for preparing low temperature toughness reinforcing special material for tube is 170～260 DEG C, and Screw Extrusion rotating speed is
20～80r/min.
Embodiment one,
A kind of PP-R pipe PP Pipe Compound of polynary toughening modifying, its feed material by weight, PP-R resins be 55～
95 parts, toughener I be 2～20 parts, toughener II be 1～5 part, inorganic rigid particle be 2～20 parts, in the range of configure raw material.
PP-R resins be atactic copolymerized polypropene, the trade mark：PA14-D, Daqing Oil Field Co., Ltd of CNPC (with
Lower described PP-R resins are the trade mark resin), content is 78 parts.
Toughener I contents are 2 parts, consisting of PP-R resins and beta nucleater.By the toughener I of 100 parts of parts by weight
Meter, wherein, PP-R resin contents are 95 parts, and beta nucleater is aryl amide compound (TMB), and content is 5 parts, the trade mark：TMB-5,
Shanxi chemical institute.
Toughener II contents are 10 parts, consisting of PP-R resins, elastomer and bulking agent.By 100 parts of parts by weight
Toughener II is counted, wherein, PP-R resin contents are 80 parts, and elastomer is POE, 10 parts of content, the trade mark：8150, DOW Chemical increases
Appearance agent is PP base olefin block copolymers, and content is 10 parts, the trade mark：Intune, DOW Chemical.
Inorganic rigid particle content is 10 parts, consisting of PP-R resins and inorganic rigid powder body material.By 100 parts of weight
The inorganic rigid particle meter of number, wherein, PP-R resin contents are 90 parts, and inorganic rigid powder body material is Nano-meter CaCO33, content
For 10 parts, Zhejiang Tianyi New Materials Co., Ltd.
The preparation of toughener I, toughener II and inorganic rigid particle：Respectively the above is weighed into raw material by proportioning and filled
The premixing for dividing, carries out extruding pelletization in double screw extruder, and double screw extruder temperature is 185 DEG C of an area, two areas 190
DEG C, 200 DEG C of 3rd area, 205 DEG C of 4th area, 210 DEG C of 5th area, 200 DEG C of head, screw speed 50r/min.Respectively by the toughener of granulation
I, toughener II and inorganic rigid particle carry out drying and processing, and drying temperature is 80 DEG C, time 120min.
PP-R resins (78 parts), toughener I (2 parts), toughener II (10 parts), inorganic rigid particle (10 parts) are filled
Divide mixing, obtain required low temperature toughness reinforcing special material for tube, be placed in pipe extruder carrying out the extrusion sample preparation of tubing, prepare
Possess the PP-R pipe of low temperature toughness reinforcing, and the PP-R pipe for possessing low temperature toughness reinforcing is entered with blank tubing, commercially available toughness reinforcing tubing
Row testing performance index, test result is as shown in table 1.
The performance data of the embodiment of the present invention one of table 1. and control sample
As seen from the table, through a kind of PP-R pipe PP Pipe Compound toughening modifying of the polynary toughening modifying of the embodiment of the present invention one
PP-R pipe afterwards, its low temperature impact properties are much better than blank tubing and commercially available toughness reinforcing tubing, and the normal temperature burst pressure of tubing
Having relative to blank sample increases by a small margin, and commercially available toughness reinforcing tubing hydraulic performance does not then reach the index of blank tubing.This be by
In the addition of beta nucleater, formation β crystal structures in PP-R pipe are promoted, improve the performance shadow that α crystal zones are come in original material
Ring, the secondly addition of elastomer forms cooperative effect with nucleator, lift toughening effect, bulking agent can be effectively improved elastomer and
The compatibility of PP-R base materials, and toughener is also in itself a kind of elastomer, and the addition of calcium carbonate can effectively make up toughness reinforcing and bring
PP-R rigidity and hydraulic performance decline, reach lifted tubing combination property purpose.
Embodiment two,
A kind of PP-R pipe PP Pipe Compound of polynary toughening modifying, its feed material by weight, PP-R resins be 55～
95 parts, toughener I be 1～5 part, toughener II be 2～20 parts, inorganic rigid particle be 2～20 parts, in the range of configure raw material.
PP-R resins are atactic copolymerized polypropene, and content is 83 parts.
Toughener I contents are 2 parts, consisting of PP-R resins and nucleator.Based on the toughener I of 100 parts of parts by weight,
Wherein, PP-R resin contents are 95 parts, and beta nucleater is aryl amide compound (NAB), and content is 5 parts, the trade mark：NAB-82, mountain
Western chemical institute.
Toughener II contents are 5 parts, consisting of PP-R resins, elastomer and bulking agent.By the increasing of 100 parts of parts by weight
Tough dose of II meter, wherein, PP-R resin contents are 80 parts, and elastomer is OBC, 10 parts of content, the trade mark：DOW Chemical, bulking agent is
PP base olefin block copolymers, content is 10 parts, the trade mark：Intune, DOW Chemical.
Inorganic rigid particle content is 10 parts, consisting of PP-R resins and inorganic rigid powder body material.By 100 parts of weight
The inorganic rigid particle meter of number, wherein, PP-R resin contents are 90 parts, and inorganic rigid powder body material is ultra-fine SiO2, content
For 10 parts, Wuxi City great Xin environment-friendly materials Co., Ltd.
The preparation of toughener I, toughener II and inorganic rigid particle：Respectively above raw material is carried out weighing by proportioning going forward side by side
Row sufficiently premixing, carries out extruding pelletization in double screw extruder, and double screw extruder temperature is 185 DEG C of an area, 2nd area
190 DEG C, 200 DEG C of 3rd area, 205 DEG C of 4th area, 210 DEG C of 5th area, 200 DEG C of head, screw speed 50r/min.Respectively by the increasing of granulation
Tough dose of I, toughener II and inorganic rigid particle carry out drying and processing, and drying temperature is 90 DEG C, time 120min.
PP-R resins (83 parts), toughener I (2 parts), toughener II (5 parts), inorganic rigid particle (10 parts) are filled
Divide mixing, obtain required low temperature toughness reinforcing special material for tube, be placed in pipe extruder carrying out the extrusion sample preparation of tubing, prepare
Possess the PP-R pipe of low temperature toughness reinforcing, and the PP-R pipe for possessing low temperature toughness reinforcing is entered with blank tubing, commercially available toughness reinforcing tubing
Row testing performance index, test result is as shown in table 2.
The performance data of the embodiment of the present invention two of table 2. and control sample
As seen from the table, through a kind of PP-R pipe PP Pipe Compound toughening modifying of the polynary toughening modifying of the embodiment of the present invention two
PP-R pipe afterwards, its low temperature impact properties are much better than blank tubing and commercially available toughness reinforcing tubing, equally, the normal temperature burst pressure of tubing
Power has relative to blank sample to be increased by a small margin, it will be apparent that due to commercially available toughness reinforcing tubing.This is the addition due to beta nucleater, is promoted
β crystal structures are formed in PP-R pipe, the performance impact that α crystal zones are come in original material is improved, secondly the addition of elastomer with
Nucleator forms cooperative effect, lifts toughening effect, and bulking agent can be effectively improved the compatibility of elastomer and PP-R base materials, and increase
Tough dose is also in itself a kind of elastomer, and the addition of calcium carbonate can be effectively made up under the PP-R rigidity and hydraulic performance that toughness reinforcing is brought
Drop, reaches the purpose of the combination property for lifting tubing.
The present invention is simultaneously used for beta nucleater, elastomer, bulking agent, inorganic rigid material in the low temperature toughness reinforcing of PP-R, profit
With multicomponent system toughness reinforcing principle, the low temperature toughness reinforcing of PP-R is realized, under solving low temperature use condition, what tubing fragility ftractureed asks
Topic, improves PP-R pipe applicability under cold conditions.Compared with existing PP-R toughening technologies, using present invention preparation
The PP-R pipe PP Pipe Compound of a kind of polynary toughening modifying have the characteristics that：
(1) good toughening effect
Compared with similar toughness reinforcing tubing, special material for tube its low-temperature flexibility prepared by the present invention has and increases substantially.
First, the addition of nucleator can be changed from material microcosmic angle to the crystal formation of PP-R, improve original α spherocrystals to material at low temperature
The adverse effect that performance is brought；Secondly, by adding toughening material elastomer, material composition is improved from macroscopic perspective,
Formed with nucleator and acted synergistically, lift the toughness of PP-R；Furthermore, selected elastomeric material itself is under cryogenic still
Maintain higher storage modulus, it is ensured that modified PP-R high tenacity at low temperature.
(2) tubing hydraulic performance does not decline
Tubing prepared by original elastic body toughening technology easily forms phase separation structure in PP-R base materials, so as to cause
The hydraulic performance of tubing declines, and adds elastomer bulking agent in the present invention, is conducive to increasing the phase between elastomer and PP-R
Capacitive, improves the interface between PP-R and elastomer, reduces and is separated, and prepared tubing is ensured while PP-R toughness is lifted
Hydraulic performance do not decline.
(3) rigid reinforcement
Relative to conventional method for toughening, the addition of inorganic rigid particle, be conducive to lifting the rigidity of tubing, make up toughness reinforcing
The tubing for bringing rigidly declines, and really realizes the lifting of PP-R pipe combination property.
(4) good application prospect
A kind of preparation method of the PP-R pipe PP Pipe Compound of polynary toughening modifying of the present invention is simple, toughener consumption is few, comprehensive
Close low cost, from terms of difficulty of processing, cost and performance etc. compared with existing modification technology, the tubing of the low temperature toughening modifying
PP Pipe Compound has a good application prospect.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Any modification, equivalent or improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of PP-R pipe PP Pipe Compound of polynary toughening modifying, it is characterised in that：Count by weight, comprising following components：
85～95 parts of PP-R resins；1～5 part of toughener I；2～5 parts of toughener II；2～5 parts of inorganic rigid particle, described PP-R
Resin is type III atactic copolymerized polypropene, including true qualities pellet, coloured pellet and powder, described toughener I, toughener II
PP-R resins are with the main component in inorganic rigid particle, beta nucleater, described increasing are also contained in described toughener I
Also containing elastomer and bulking agent in tough dose of II, inorganic rigid powder body material is also contained in described inorganic rigid particle.
2. a kind of PP-R pipe PP Pipe Compound of polynary toughening modifying as claimed in claim 1, it is characterised in that：By 100 parts of weights
The toughener I meters of amount number, wherein PP-R resin contents are 90～99 parts, and beta nucleater content is 1～10 part.
3. the PP-R pipe PP Pipe Compound of a kind of polynary toughening modifying as described in any one of claim 1 and 2, its feature exists
In：Described beta nucleater be TMB series compounds, CHB-5 compounds, NU-100 compounds and NAB compounds, terres rares β into
Core agent is WGB series compounds, organic acid beta nucleater is the one kind or several in DCHT compounds, different diacid hydrazine and suberic acid
Plant combination.
4. a kind of PP-R pipe PP Pipe Compound of polynary toughening modifying as claimed in claim 1, it is characterised in that：By 100 parts of weights
The toughener II meters of amount number, wherein PP-R resin contents are 60～90 parts, and elastomer content is 5～20 parts, Compatibilizer Content
For 5～20 parts.
5. the PP-R pipe PP Pipe Compound of a kind of polynary toughening modifying as described in any one of claim 1 and 4, its feature exists
In：Described elastomer is ethylene-octene copolymer (POE), olefin block copolymers (OBC), ethylene-vinyl acetate copolymer
(EVA), the one or more combination in styrene-butadiene block copolymer (SBS), described bulking agent is that PP base alkene is embedding
One kind in section copolymer, the PP of modified by maleic acid anhydride graft.
6. a kind of PP-R pipe PP Pipe Compound of polynary toughening modifying as claimed in claim 1, it is characterised in that：By 100 parts of weights
The inorganic rigid particle meter of amount number, wherein PP-R resin contents are 80～95 parts, and inorganic rigid powder body material content is 5～20
Part.
7. the PP-R pipe PP Pipe Compound of a kind of polynary toughening modifying as described in any one of claim 1 and 6, its feature exists
In：Described inorganic rigid powder body material is CaCO3、SiO2, SiC whiskers, Al2O3, kaolin, the one kind in glass microballoon or
Several combinations of person.
8. a kind of preparation method of the PP-R pipe PP Pipe Compound of polynary toughening modifying, it is characterised in that：Comprise the following steps：
A toughener I, toughener II and inorganic rigid particle), are prepared：
A1) the preparation of toughener I：Choose TMB series compounds, CHB-5 compounds, NU-100 compounds and NAB compounds, dilute
Great soil group beta nucleater is WGB series compounds, organic acid beta nucleater is in DCHT compounds, different diacid hydrazine and suberic acid
Kind or it is several be sufficiently pre-mixed in proportion with PP-R resins as beta nucleater, then premix is placed in into twin-screw and is squeezed
In going out comminutor, blending shaping, cooling, pelletizing are carried out, obtain toughener I, it is standby；
A2) the preparation of toughener II：One or more in POE, OBC, EVA, SBS elastomer are chosen as elastomer, is chosen
One kind in PP base olefin block copolymers, the PP of modified by maleic acid anhydride graft is entered in proportion as bulking agent with PP-R resins
Row sufficiently premixing, is then placed in premix in double-screw extruding pelletizing machine, carries out blending shaping, cooling, pelletizing, obtains
Toughener II, it is standby；
A3) the preparation of inorganic rigid particle：Choose CaCO3、SiO2, SiC whiskers, Al2O3, kaolin, the one kind in glass microballoon
Or it is several be sufficiently pre-mixed by a certain percentage with PP-R resins as inorganic rigid powder body material, then by premix
In being placed in double-screw extruding pelletizing machine, blending shaping, cooling, pelletizing are carried out, obtain inorganic rigid particle, it is standby；
B low temperature toughness reinforcing special material for tube) is prepared：By previously prepared toughener I, toughener II, inorganic rigid particle by certain
Ratio is sufficiently pre-mixed with PP-R resins, and then premix is placed in double-screw extruding pelletizing machine, carries out extrusion drawing
Stretch, cool down, pelletizing, obtain low temperature toughness reinforcing special material for tube.
9. a kind of preparation method of the PP-R pipe PP Pipe Compound of polynary toughening modifying as claimed in claim 8, it is characterised in that：
Described step a1) in beta nucleater and PP-R resins abundant premixing, refer to using high-speed mixer, double screw extruder
Beta nucleater is set to be uniformly dispersed in PP-R materials；Described step a2) elastomer, bulking agent and PP-R resins it is abundant
Premixing, refers to and elastomer, bulking agent is uniformly dispersed in PP-R materials using high-speed mixer, double screw extruder；
Described step a3) in inorganic rigid powder body material and PP-R resins abundant premixing, refer to using high-speed mixer, double spiral shells
Bar extruder makes inorganic rigid material be uniformly dispersed in PP-R materials.
10. a kind of preparation method of the PP-R pipe PP Pipe Compound of polynary toughening modifying as claimed in claim 8, its feature exists
In：Described step B) in prepare low temperature toughness reinforcing special material for tube Screw Extrusion temperature be 170～260 DEG C, Screw Extrusion turn
Speed is 20～80r/min.
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