CN110358197A - A kind of random copolymerization polypropylene pipe and preparation method thereof of novel enhanced toughening - Google Patents
A kind of random copolymerization polypropylene pipe and preparation method thereof of novel enhanced toughening Download PDFInfo
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- CN110358197A CN110358197A CN201910769875.0A CN201910769875A CN110358197A CN 110358197 A CN110358197 A CN 110358197A CN 201910769875 A CN201910769875 A CN 201910769875A CN 110358197 A CN110358197 A CN 110358197A
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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
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention discloses a kind of random copolymerization polypropylene pipes and preparation method thereof of novel enhanced toughening.Random copolymerization polypropylene pipe of the invention is prepared by the component of following mass fraction: 80~100 parts of atactic copolymerized polypropene, 5~8 parts of toner, 5~20 parts of crosslinked polystyrene microsphere, 1~10 part of compatilizer.The appearance of XPS microballoon is powder morphology, preparation process is simple, in conjunction with PP-g-PS or SBS as compatilizer, it can guarantee that XPS microballoon is evenly dispersed in the base, effectively play the effect of XPS activeness and quietness, PPR pipe of the invention is set to possess toughness more better than common PPR pipe and intensity, lower tube bursting and leakage probability and longer service life.Compared with traditional toughener, the production cost of product can also be effectively reduced in XPS microballoon while guaranteeing reinforcing effect, improve its market competitiveness.
Description
Technical field
The present invention relates to plastic conduit technical field, the random copolymerization more particularly, to a kind of novel enhanced toughening is poly-
Propylene tubing and preparation method thereof.
Background technique
Atactic copolymerized polypropene (polypropylene random, abbreviation PPR) tubing have thermal conductivity it is low, it is corrosion-resistant,
The Good All-around Properties such as heat-fusible welding, have been widely used for the field that hot and cold water conveys in building.China was in 2011
800,000 tons are alreadyd exceed to the demand of PPR pipe, but due to the limit burst pressure and resistance to Slow Crack of domestic PPR resin
There are certain gaps for the indexs such as growth and import resin, therefore domestic PPR pipe is generally import resin, higher cost, limitation
It is promoted and applied.On the other hand, the PPR pipe of Conventional extrusion techniques processing has the following deficiencies: (1) due to making under conventional method
What is mainly generated in standby PPR pipe is coarse alpha type crystal, and this mutual active force of spherocrystal is not strong, is easy to happen and answers
Power concentration causes material fragility to be broken.(2) since conventional tubing its axial strength for squeezing out processing is higher than circumferential intensity, but from phase
Close it is theoretical known in the circumferential stress of tubing be in use 2 times of axially loaded, therefore tubing circumferential direction intensity and reality
There are certain gaps for demand, can shorten the tubing service life to a certain extent.
Mainly toughening enhancing is carried out to PPR pipe using rubber elastomer or inorganic rigid particle in industry at present to change
Property.Wherein, tubing toughness can be effectively improved really by rubber elastomer being added in PPR matrix, but it is big to will also result in tubing intensity
Width decline；And inorganic rigid particle (such as calcium carbonate or barium sulfate) is added in tubing can effectively enhance the intensity of tubing,
But once handled for inorganic rigid particle dispersion bad, it be easy to cause toughness to decline and the problems such as non-plastic fracture, pole
The earth shortens the service life of tubing.Prior art CN106566067A discloses a kind of hydrostatic water-feeding pipes use of low temperature resistant height
PPR material and preparation method thereof is directed to the resistance to low temperature of PPR pipe and the improvement of resistance to static pressure performance, is promoted simultaneously
Moisture vapor permeable performance and flame retardant property are to promote resistance to low temperature and resistance to static pressure performance by forming inierpeneirating network structure,
It is provided simultaneously with mechanical property, it is preferred that emphasis is the modification to polyvinyl alcohol, and joined inorganic rigid particle, for PPR pipe
Toughening enhancing, while the problem of being also avoided that the related damage to tubing service life, is not directed to specific solution.
Summary of the invention
The technical problem to be solved by the present invention is to overcome PPR pipes to be easy to appear pipe in existing method tough-increased and reinforced modification
The problem of the decline of material intensity or toughness deficiency provides a kind of novel with high-intensity and high-tenacity PPR pipe and its preparation side
Method.By selective cross-linking polystyrene microsphere replace traditional rubber elastomer as toughener, and with PPR raw material, toner with
And compatilizer is blended and is granulated, and the PPR pipe of novel high-strength high tenacity is made finally by extrusion process.
The object of the present invention is to provide a kind of preparation methods of the random copolymerization polypropylene pipe of above-mentioned novel enhanced toughening.
Above-mentioned purpose of the present invention is achieved through the following technical solutions:
A kind of random copolymerization polypropylene pipe of novel enhanced toughening, is prepared: nothing by the component of following mass fraction
Advise 80~100 parts of copolymer polypropylene, 3~5 parts of toner, 5~20 parts of crosslinked polystyrene microsphere, 1~10 part of compatilizer, the phase
Holding agent is polypropylene grafted polystyrene (PP-g-PS) and/or Styrene-Butadiene-Styrene Block Copolymer (SBS).
The present invention by selection organic rigid-particle crosslinked polystyrene microsphere (XPS) replace traditional rubber elastomer or
The PPR pipe of novel high-strength high tenacity is prepared in the raw materials such as person's inorganic rigid particle and PPR resin, toner and compatilizer
Material.By adjusting the partial size of the dosage of initiator and crosslinking agent and then adjustment XPS microballoon at 0.4~0.9 μm, and combine compatible
Agent realizes that XPS microballoon is evenly dispersed in the base, to obtain good toughening reinforcing effect, effectively improves pipe performance, prolong
Long products service life.
Wherein the proportion of organic rigid-particle crosslinked polystyrene microsphere (XPS) of the invention and compatilizer is of the invention
Random copolymerization polypropylene pipe has the key factor of activeness and quietness effect.XPS is as rigid organic fine particles, when as dispersed phase
Higher static pressure can be generated on its equator, and dispersible particle is made to be easy to happen surrender and generate cold drawing and big plasticity shape occurs
Become, and then absorbs a large amount of energy.In addition, possessing more excellent compatibility compared with inorganic rigid particle, between XPS and matrix
And lower surface can, and XPS has modulus more higher than matrix while will not in melting process will not be as linear polymer
Equally there is a situation where melt and may react with polymeric matrix.Therefore XPS can be better dispersed in PPR matrix simultaneously
Play activeness and quietness, reduce the probability of leakage booster, extends the tubing service life, improve the market competitiveness of tubing.
The present invention, as compatilizer, can be promoted compatible between XPS particle and PPR matrix using PP-g-PS or SBS
Property, XPS dispersing uniformity is improved, there is a situation where reunite for reduction.
Compared with traditional PPR pipe, by the way that XPS microballoon is added, the toughness of tubing can be effectively improved, while improving tubing
Intensity realizes that the comprehensive of performance is promoted, meets the requirement of the circumferential intensity in use process, reduces leakage booster probability, effectively
Extend tubing service life.Meanwhile compared with traditional toughener, the cost of XPS microballoon is lower, and the life of product can be effectively reduced
Cost is produced, its market competitiveness is improved.
Preferably, it is prepared by the component of following mass fraction: 85~100 parts of atactic copolymerized polypropene, toner 3~5
Part, 6~8 parts of crosslinked polystyrene microsphere, 3~4 parts of compatilizer, the compatilizer are PP-g-PS and/or SBS.
Preferably, it is prepared by the component of following mass fraction: 100 parts of atactic copolymerized polypropene, 5 parts of toner, crosslinking
7 parts of polystyrene microsphere, 4 parts of compatilizer, the compatilizer are PS-g-PS and/or block copolymer SBS.
Preferably, the crosslinked polystyrene microsphere is prepared via a method which to obtain:
S1. by water, styrene monomer, crosslinking agent, emulsifier, pre-emulsification obtains pre-emulsion at 50 DEG C；
S2. part initiator is added in the pre-emulsion of part and is warming up to 50~70 DEG C, then drop evenly remaining pre-
Emulsion and initiator, speed of agitator are 200~400r/min, and 60~75 DEG C of 20~30min of heat preservation after being added dropwise are warming up to
80~95 DEG C are down to room temperature after constant temperature 20min again, and by being demulsified, washing, filtering, being dried to obtain crosslinked polystyrene rigidity grain
Son, wherein the dosage of initiator is the 0.1~0.4% of styrene monomer quality, and the dosage of crosslinking agent is styrene monomer quality
4~10%.
The PS microballoon synthesis of above method preparation of the invention is simple, and prepared XPS microballoon is finally powder appearance, energy
It is uniformly mixed with other raw materials in process of production.
Preferably, the mass concentration of styrene monomer is 33~48% in the pre-emulsion.
Preferably, the dosage of the initiator is the 0.3% of styrene monomer quality.
Preferably, the dosage of the crosslinking agent is the 6.5% of styrene monomer quality.
The present invention also protects the preparation method of the random copolymerization polypropylene pipe of above-mentioned novel enhanced toughening, by PPR pipe
Group is placed in batch mixer and is uniformly mixed, and beads fuse is blended and forms by extruding pelletization, and cooling and shaping obtains PPR pipe, wherein
Extruding pelletization temperature is 170~220 DEG C.
Preferably, the extruding pelletization temperature is 185 DEG C.
Compared with prior art, the beneficial effects of the present invention are:
(1) the present invention provides a kind of novel high-toughness high-strength PPR pipe and preparation method thereof, pipe can be effectively improved
The toughness and intensity of material realize that the comprehensive of pipe performance is promoted, meet the requirement of the circumferential intensity in use process, reduce leakage
Booster probability, effectively extension tubing service life.
(2) for the present invention compared with traditional toughener, the cost of XPS microballoon is lower, and being produced into for product can be effectively reduced
This, improves its market competitiveness.
(3) XPS microballoon of the invention is powder appearance, and preparation process is simple, can be equal with other raw materials in process of production
Even mixing can enhance the compatibility between XPS microballoon and matrix, guarantee it using PP-g-PS and/or SBS as compatilizer
Dispersing uniformity reduces the probability for occurring reuniting.
Specific embodiment
The present invention is further illustrated With reference to embodiment, but embodiment the present invention is not done it is any
The restriction of form.Unless otherwise indicated, source chemicals used in the embodiment of the present invention are the source chemicals routinely bought.
Embodiment 1
A kind of random copolymerization polypropylene pipe of novel enhanced toughening includes PPR resin, toner, toughener and compatible
Agent, the preparation method is as follows:
By 100 parts of PPR resins, 5 parts of toners, 6 parts of crosslinked polystyrene microspheres and 3 parts of polypropylene grafted polystyrene
(PP-g-PS) batch mixer high-speed stirred 10min is added together, then by double screw extruder in 190 DEG C of extruding pelletizations
PPR pellet is obtained, gained PPR pellet is then passed through into single screw extrusion machine melt blending and molding, after cooling and shaping
Obtain the PPR pipe of novel high-strength high tenacity.
Wherein toughener is crosslinked polystyrene microsphere, and preparation method is as follows:
S1. by water, styrene monomer, crosslinking agent, emulsifier, pre-emulsification obtains pre-emulsion, styrene monomer at 50 DEG C
Mass concentration be 42%；
S2. part initiator is added in the pre-emulsion of part and is warming up to 60 DEG C, then drop evenly remaining pre-emulsification
Liquid and initiator, speed of agitator 300r/min, 70 DEG C of heat preservation 20min after being added dropwise are warming up to 80 DEG C again after constant temperature 20min
It is down to room temperature, and by being demulsified, washing, filtering, being dried to obtain cross-linking polystyrene rigid particle, wherein the dosage of initiator is
The 0.2% of styrene monomer quality, the dosage of crosslinking agent are the 6% of styrene monomer quality.
Embodiment 2
A kind of random copolymerization polypropylene pipe of novel enhanced toughening includes PPR resin, toner, toughener and compatible
Agent, the preparation method is as follows:
By 85 parts of PPR resins, 3 parts of toners, 8 parts of crosslinked polystyrene microspheres and 3 parts of s-B-Ss
Batch mixer high-speed stirred 8min is added in block copolymer (SBS) together, is then made by double screw extruder in 190 DEG C of extrusions
Grain, can be obtained the PPR pellet of novel high-strength high tenacity, then that gained PPR pellet is total by single screw extrusion machine melting
Molding is mixed, using the PPR pipe for obtaining novel high-strength high tenacity after cooling and shaping.
Wherein toughener is crosslinked polystyrene microsphere, and preparation method is as follows:
S1. by water, styrene monomer, crosslinking agent, emulsifier, pre-emulsification obtains pre-emulsion, styrene monomer at 50 DEG C
Mass concentration be 36%；
S2. part initiator is added in the pre-emulsion of part and is warming up to 60 DEG C, then drop evenly remaining pre-emulsification
Liquid and initiator, speed of agitator 400r/min, 65 DEG C of heat preservation 25min after being added dropwise are warming up to 95 DEG C of constant temperature 20min again,
It is down to room temperature, and by being demulsified, washing, filtering, being dried to obtain cross-linking polystyrene rigid particle, wherein the dosage of initiator is
The 0.4% of styrene monomer quality, the dosage of crosslinking agent are the 4% of styrene monomer quality.
Embodiment 3
A kind of random copolymerization polypropylene pipe of novel enhanced toughening includes PPR resin, toner, toughener and compatible
Agent, the preparation method is as follows:
By 100 parts of PPR resins, 5 parts of toners, 7 parts of crosslinked polystyrene microspheres and 4 parts of compatilizers (2 parts of PP-g-PS with
And 2 parts of SBS) batch mixer high-speed stirred 10min is added together, then by double screw extruder in 185 DEG C of extruding pelletizations
Obtain the PPR pellet of novel high-strength high tenacity, then by gained PPR pellet by single screw extrusion machine melt blending and at
Type, using the PPR pipe for obtaining novel high-strength high tenacity after cooling and shaping.
Wherein toughener is crosslinked polystyrene microsphere, and preparation method is as follows:
S1. by water, styrene monomer, crosslinking agent, emulsifier, pre-emulsification obtains pre-emulsion, styrene monomer at 50 DEG C
Mass concentration be 42%；
S2. part initiator is added in the pre-emulsion of part and is warming up to 60 DEG C, then drop evenly remaining pre-emulsification
Liquid and initiator, speed of agitator 300r/min, 70 DEG C of heat preservation 30min after being added dropwise are warming up to 85 DEG C of constant temperature 20min again,
It is down to room temperature, and by being demulsified, washing, filtering, being dried to obtain cross-linking polystyrene rigid particle, wherein the dosage of initiator is
The 0.3% of styrene monomer quality, the dosage of crosslinking agent are the 6.5% of styrene monomer quality.
Embodiment 4
A kind of random copolymerization polypropylene pipe of novel enhanced toughening includes PPR resin, toner, toughener and compatible
Agent, the preparation method is as follows:
By 100 parts of PPR resins, 5 parts of toners, 13 parts of crosslinked polystyrene microspheres and 3 parts of polypropylene grafted polystyrene
(PP-g-PS) batch mixer high-speed stirred 10min is added together, then by double screw extruder in 190 DEG C of extruding pelletizations
Obtain the PPR pellet of novel high-strength high tenacity, then by gained PPR pellet by single screw extrusion machine melt blending and at
Type, using the PPR pipe for obtaining novel high-strength high tenacity after cooling and shaping.
Wherein toughener is crosslinked polystyrene microsphere, and preparation method is as follows:
S1. by water, styrene monomer, crosslinking agent, emulsifier, pre-emulsification obtains pre-emulsion, styrene monomer at 50 DEG C
Mass concentration be 42%；
S2. part initiator is added in the pre-emulsion of part and is warming up to 60 DEG C, then drop evenly remaining pre-emulsification
Liquid and initiator, speed of agitator 300r/min, 70 DEG C of heat preservation 23min after being added dropwise are warming up to 80 DEG C of constant temperature 20min again,
It is down to room temperature, and by being demulsified, washing, filtering, being dried to obtain cross-linking polystyrene rigid particle, wherein the dosage of initiator is
The 0.2% of styrene monomer quality, the dosage of crosslinking agent are the 5% of styrene monomer quality.
Embodiment 5
A kind of random copolymerization polypropylene pipe of novel enhanced toughening includes PPR resin, toner, toughener and compatible
Agent, the preparation method is as follows:
By 100 parts of PPR resins, 5 parts of toners, 6 parts of crosslinked polystyrene microspheres and 10 parts of polypropylene grafted polystyrene
(PP-g-PS) batch mixer high-speed stirred 10min is added together, then by double screw extruder in 190 DEG C of extruding pelletizations
Obtain the PPR pellet of novel high-strength high tenacity, then by gained PPR pellet by single screw extrusion machine melt blending and at
Type, using the PPR pipe for obtaining novel high-strength high tenacity after cooling and shaping.
Wherein toughener is crosslinked polystyrene microsphere, and preparation method is as follows:
S1. by water, styrene monomer, crosslinking agent, emulsifier, pre-emulsification obtains pre-emulsion, styrene monomer at 50 DEG C
Mass concentration be 42%；
S2. part initiator is added in the pre-emulsion of part and is warming up to 60 DEG C, then drop evenly remaining pre-emulsification
Liquid and initiator, speed of agitator 300r/min, 70 DEG C of heat preservation 25min after being added dropwise are warming up to 80 DEG C of constant temperature 20min again,
It is down to room temperature, and by being demulsified, washing, filtering, being dried to obtain cross-linking polystyrene rigid particle, wherein the dosage of initiator is
The 0.2% of styrene monomer quality, the dosage of crosslinking agent are the 6% of styrene monomer quality.
Embodiment 6
A kind of random copolymerization polypropylene pipe of novel enhanced toughening includes PPR resin, toner, toughener and compatible
Agent, the preparation method is as follows:
By 100 parts of PPR resins, 5 parts of toners, 6 parts of crosslinked polystyrene microspheres and 3 parts of polypropylene grafted polystyrene
(PP-g-PS) batch mixer high-speed stirred 10min is added together, then by double screw extruder in 190 DEG C of extruding pelletizations
Obtain the PPR pellet of novel high-strength high tenacity, then by gained PPR pellet by single screw extrusion machine melt blending and at
Type, using the PPR pipe for obtaining novel high-strength high tenacity after cooling and shaping.
Wherein toughener is crosslinked polystyrene microsphere, and preparation method is as follows:
S1. by water, styrene monomer, crosslinking agent, emulsifier, pre-emulsification obtains pre-emulsion, styrene monomer at 50 DEG C
Mass concentration be 42%；
S2. part initiator is added in the pre-emulsion of part and is warming up to 60 DEG C, then drop evenly remaining pre-emulsification
Liquid and initiator, speed of agitator 300r/min, 70 DEG C of heat preservation 28min after being added dropwise are warming up to 80 DEG C of constant temperature 20min again,
It is down to room temperature, and by being demulsified, washing, filtering, being dried to obtain cross-linking polystyrene rigid particle, wherein the dosage of initiator is
The 0.1% of styrene monomer quality, the dosage of crosslinking agent are the 10% of styrene monomer quality.
Embodiment 7
A kind of random copolymerization polypropylene pipe of novel enhanced toughening includes PPR resin, toner, toughener and compatible
Agent, the preparation method is as follows:
By 85 parts of PPR resins, 3 parts of toners, 8 parts of crosslinked polystyrene microspheres and 3 parts of s-B-Ss
Batch mixer high-speed stirred 8min is added in block copolymer (SBS) together, is then made by double screw extruder in 170 DEG C of extrusions
Grain, can be obtained the PPR pellet of novel high-strength high tenacity, then that gained PPR pellet is total by single screw extrusion machine melting
Molding is mixed, using the PPR pipe for obtaining novel high-strength high tenacity after cooling and shaping.
Wherein toughener is crosslinked polystyrene microsphere, and preparation method is as follows:
S1. by water, styrene monomer, crosslinking agent, emulsifier, pre-emulsification obtains pre-emulsion, styrene monomer at 50 DEG C
Mass concentration be 36%；
S2. part initiator is added in the pre-emulsion of part and is warming up to 60 DEG C, then drop evenly remaining pre-emulsification
Liquid and initiator, speed of agitator 400r/min, 65 DEG C of heat preservation 30min after being added dropwise are warming up to 95 DEG C of constant temperature 20min again,
It is down to room temperature, and by being demulsified, washing, filtering, being dried to obtain cross-linking polystyrene rigid particle, wherein the dosage of initiator is
The 0.4% of styrene monomer quality, the dosage of crosslinking agent are the 4% of styrene monomer quality.
Embodiment 8
A kind of random copolymerization polypropylene pipe of novel enhanced toughening includes PPR resin, toner, toughener and compatible
Agent, the preparation method is as follows:
By 85 parts of PPR resins, 3 parts of toners, 8 parts of crosslinked polystyrene microspheres and 3 parts of s-B-Ss
Batch mixer high-speed stirred 8min is added in block copolymer (SBS) together, is then made by double screw extruder in 220 DEG C of extrusions
Grain, can be obtained the PPR pellet of novel high-strength high tenacity, then that gained PPR pellet is total by single screw extrusion machine melting
Molding is mixed, using the PPR pipe for obtaining novel high-strength high tenacity after cooling and shaping.
Wherein toughener is crosslinked polystyrene microsphere, and preparation method is as follows:
S1. by water, styrene monomer, crosslinking agent, emulsifier, pre-emulsification obtains pre-emulsion, styrene monomer at 50 DEG C
Mass concentration be 36%；
S2. part initiator is added in the pre-emulsion of part and is warming up to 60 DEG C, then drop evenly remaining pre-emulsification
Liquid and initiator, speed of agitator 400r/min, 65 DEG C of heat preservation 27min after being added dropwise are warming up to 95 DEG C of constant temperature 20min again,
It is down to room temperature, and by being demulsified, washing, filtering, being dried to obtain cross-linking polystyrene rigid particle, wherein the dosage of initiator is
The 0.4% of styrene monomer quality, the dosage of crosslinking agent are the 4% of styrene monomer quality.
Comparative example 1
A kind of random copolymerization polypropylene pipe of novel enhanced toughening includes PPR resin, toner, toughener and compatible
Agent, the preparation method is as follows:
By 100 parts of PPR resins, 5 parts of toners, 3 parts of crosslinked polystyrene microspheres and 2 parts of polypropylene grafted polystyrene
(PP-g-PS) batch mixer high-speed stirred 10min is added together, then by double screw extruder in 190 DEG C of extruding pelletizations
Obtain the PPR pellet of novel high-strength high tenacity, then by gained PPR pellet by single screw extrusion machine melt blending and at
Type, using the PPR pipe for obtaining novel high-strength high tenacity after cooling and shaping.
Comparative example 2
A kind of random copolymerization polypropylene pipe of novel enhanced toughening includes PPR resin, toner, toughener and compatible
Agent, the preparation method is as follows:
By 100 parts of PPR resins, 5 parts of toners, 25 parts of crosslinked polystyrene microspheres and 3 parts of polypropylene grafted polystyrene
(PP-g-PS) batch mixer high-speed stirred 10min is added together, then by double screw extruder in 190 DEG C of extruding pelletizations
Obtain the PPR pellet of novel high-strength high tenacity, then by gained PPR pellet by single screw extrusion machine melt blending and at
Type, using the PPR pipe for obtaining novel high-strength high tenacity after cooling and shaping.
As a result it detects
The tensile strength and impact strength of the PPR pipe of above-described embodiment and comparative example preparation are characterized.
It is used according to GB/T8804.3-2003 " thermoplastic plastic pipe tensile property measures third portion: polyolefin pipe "
Universal testing machine tests the tensile strength of tubing, and detection speed is 50mm/min；Izod notched impact performance is according to GB/T
1843-2008 " measurement of cantilever beam impact strength " is tested, and is tested on radial-boom impact tester.
Specific testing result is as shown in the following table 1 institute:
Table 1
It is seen from the above data that the tensile strength of random copolymerization polypropylene pipe within the scope of the present invention
Up to 34.1MPa, corresponding notch impact strength is up to 35.6kJ/m2, much higher than the respective performances of comparative example, have significant
Effect is promoted, the comprehensive of pipe performance is realized and is promoted, meet the requirement of the circumferential intensity in use process, reduce leakage booster
Probability, effectively extension tubing service life.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (9)
1. a kind of random copolymerization polypropylene pipe of novel enhanced toughening, which is characterized in that by the component system of following mass fraction
It is standby to form: 80~100 parts of atactic copolymerized polypropene, 3~5 parts of toner, 5~20 parts of crosslinked polystyrene microsphere, compatilizer 1~10
Part, the compatilizer is polypropylene grafted polystyrene and/or Styrene-Butadiene-Styrene Block Copolymer.
2. the random copolymerization polypropylene pipe of novel enhanced toughening as described in claim 1, which is characterized in that by following mass parts
Several components are prepared: 85~100 parts of atactic copolymerized polypropene, 3~5 parts of toner, 6~8 parts of crosslinked polystyrene microsphere, phase
Hold 3~4 parts of agent, the compatilizer is polypropylene grafted polystyrene and/or Styrene-Butadiene-Styrene Block Copolymer.
3. the random copolymerization polypropylene pipe of novel enhanced toughening as described in claim 1, which is characterized in that by following mass parts
Several components are prepared: 100 parts of atactic copolymerized polypropene, 5 parts of toner, 7 parts of crosslinked polystyrene microsphere, 4 parts of compatilizer, institute
Stating compatilizer is polypropylene grafted polystyrene and/or Styrene-Butadiene-Styrene Block Copolymer.
4. the random copolymerization polypropylene pipe of novel enhanced toughening as described in claims 1 to 3 any one, which is characterized in that
The crosslinked polystyrene microsphere is prepared via a method which to obtain:
S1. by water, styrene monomer, crosslinking agent, emulsifier, pre-emulsification obtains pre-emulsion at 50 DEG C；
S2. part initiator is added in the pre-emulsion of part and is warming up to 50~70 DEG C, then drop evenly remaining pre-emulsification
Liquid and initiator, speed of agitator are 200~400r/min, 60~75 DEG C of 20~30min of heat preservation after being added dropwise, it is warming up to 80~
95 DEG C are down to room temperature after constant temperature 20min again, and by being demulsified, washing, filtering, being dried to obtain cross-linking polystyrene rigid particle,
Wherein the dosage of initiator is the 0.1~0.4% of styrene monomer quality, and the dosage of crosslinking agent is the 4 of styrene monomer quality
~10%.
5. the random copolymerization polypropylene pipe of novel enhanced toughening as claimed in claim 4, which is characterized in that the pre-emulsion
The mass concentration of middle styrene monomer is 33~48%.
6. the random copolymerization polypropylene pipe of novel enhanced toughening as claimed in claim 4, which is characterized in that the initiator
Dosage is the 0.3% of styrene monomer quality.
7. the random copolymerization polypropylene pipe of novel enhanced toughening as claimed in claim 4, which is characterized in that the dosage of crosslinking agent
It is the 6.5% of styrene monomer quality.
8. the preparation method of the random copolymerization polypropylene pipe of novel enhanced toughening described in claims 1 to 3 any one, special
Sign is, the PPR pipe group batch mixer high speed that is placed in is stirred 5~10min, and beads fuse is blended and forms by extruding pelletization,
Cooling and shaping obtains PPR pipe, and wherein extruding pelletization temperature is 170~220 DEG C.
9. the preparation method of the random copolymerization polypropylene pipe of novel enhanced toughening as claimed in claim 8, which is characterized in that institute
Stating extruding pelletization temperature is 185 DEG C.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113861569A (en) * | 2021-10-20 | 2021-12-31 | 联塑市政管道（河北）有限公司 | PPR pipe with low shrinkage and high stability and preparation method thereof |
| CN115873337A (en) * | 2022-12-13 | 2023-03-31 | 海信空调有限公司 | Modified polypropylene material, axial flow fan and air conditioner outdoor unit |
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| CN1690094A (en) * | 2004-04-21 | 2005-11-02 | 浙江工业大学 | Superfine polymer rigid filling and its preparation and use |
| CN105037951A (en) * | 2015-06-12 | 2015-11-11 | 常州大学 | Inorganic rigid particle three-element blend toughened system RRP (polypropylene random) tube and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1690094A (en) * | 2004-04-21 | 2005-11-02 | 浙江工业大学 | Superfine polymer rigid filling and its preparation and use |
| CN105037951A (en) * | 2015-06-12 | 2015-11-11 | 常州大学 | Inorganic rigid particle three-element blend toughened system RRP (polypropylene random) tube and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113861569A (en) * | 2021-10-20 | 2021-12-31 | 联塑市政管道（河北）有限公司 | PPR pipe with low shrinkage and high stability and preparation method thereof |
| CN115873337A (en) * | 2022-12-13 | 2023-03-31 | 海信空调有限公司 | Modified polypropylene material, axial flow fan and air conditioner outdoor unit |
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Application publication date: 20191022 |