CN109899602A - Flame retardant type fiber reinforcement polypropylene random copolymer composite tube and preparation method thereof - Google Patents
Flame retardant type fiber reinforcement polypropylene random copolymer composite tube and preparation method thereof Download PDFInfo
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- CN109899602A CN109899602A CN201910283265.XA CN201910283265A CN109899602A CN 109899602 A CN109899602 A CN 109899602A CN 201910283265 A CN201910283265 A CN 201910283265A CN 109899602 A CN109899602 A CN 109899602A
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- atactic copolymerized
- copolymerized polypropene
- fiber reinforcement
- flame retardant
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 77
- 239000000835 fiber Substances 0.000 title claims abstract description 60
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 230000002787 reinforcement Effects 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 27
- 239000002131 composite material Substances 0.000 title claims abstract description 25
- 229920005630 polypropylene random copolymer Polymers 0.000 title claims abstract description 23
- 229920001155 polypropylene Polymers 0.000 claims abstract description 88
- 239000004743 Polypropylene Substances 0.000 claims abstract description 82
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 20
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 15
- 230000002708 enhancing effect Effects 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 53
- 239000002245 particle Substances 0.000 claims description 48
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 39
- 229910021341 titanium silicide Inorganic materials 0.000 claims description 25
- 239000002994 raw material Substances 0.000 claims description 23
- 238000005245 sintering Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 238000001125 extrusion Methods 0.000 claims description 16
- -1 polypropylene Polymers 0.000 claims description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 239000003082 abrasive agent Substances 0.000 claims description 12
- 230000003115 biocidal effect Effects 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 12
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 12
- 239000000347 magnesium hydroxide Substances 0.000 claims description 12
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 12
- 230000008018 melting Effects 0.000 claims description 12
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 claims description 11
- 238000005253 cladding Methods 0.000 claims description 11
- 238000007334 copolymerization reaction Methods 0.000 claims description 11
- 238000009837 dry grinding Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 11
- 230000000845 anti-microbial effect Effects 0.000 claims description 10
- 239000003242 anti bacterial agent Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 238000005453 pelletization Methods 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 239000003963 antioxidant agent Substances 0.000 claims description 4
- 230000003078 antioxidant effect Effects 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 4
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 4
- 239000003921 oil Substances 0.000 claims description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- 229920001577 copolymer Polymers 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 239000000395 magnesium oxide Substances 0.000 claims 1
- 238000003756 stirring Methods 0.000 claims 1
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 239000011347 resin Substances 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 abstract description 3
- 238000004378 air conditioning Methods 0.000 abstract description 2
- 239000008187 granular material Substances 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 93
- 238000000227 grinding Methods 0.000 description 10
- 150000001336 alkenes Chemical class 0.000 description 6
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 5
- 238000011049 filling Methods 0.000 description 5
- 238000003801 milling Methods 0.000 description 5
- 229910052726 zirconium Inorganic materials 0.000 description 5
- 239000004035 construction material Substances 0.000 description 4
- 238000011056 performance test Methods 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 235000006708 antioxidants Nutrition 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 241000588724 Escherichia coli Species 0.000 description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 2
- 241000191940 Staphylococcus Species 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008103 glucose Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920005604 random copolymer Polymers 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- 229910003978 SiClx Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003385 bacteriostatic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The present invention relates to a kind of flame retardant type fiber reinforcement polypropylene random copolymer composite tubes and preparation method thereof, which is characterized in that it includes outer layer, middle layer is arranged in middle layer and internal layer between outer layer and internal layer；Outer layer is the atactic copolymerized polypropene containing fire-retardant master granule, and middle layer is the atactic copolymerized polypropene of silicon dioxide fibre enhancing, and internal layer is the atactic copolymerized polypropene containing antibacterial matrices.The flame retardant type atactic copolymerized polypropene layer resin of the application improves the flame retardant property of tubing using the atactic copolymerized polypropene for being added to fire retardant；The addition of antibacterial matrices improves the sanitation performance of pipeline.The application can be used for cold hot water piping system in building, main riser, air conditioning pipe system and other industrial pipes in building.
Description
[technical field]
The present invention relates to tubing technical fields, specifically, being that a kind of flame retardant type fiber reinforcement atactic copolymerized polypropene is multiple
Close pipe and preparation method thereof.
[background technique]
Since plastic conduit replaced cast iron pipe, PVC feed pipe since 1999, PP-R pipe capture rapidly entire interior to
Waterpipe market becomes the main product in market.Incomplete statistics, inside entire indoor Pipeline market, PP-R accounting
Up to 80% or more.
But at the same time, some problems are also exposed.The oxygen index (OI) (LOI) of PP-R is only 17%-18%, less than 21%,
From energy sustained combustion after fire, belong to inflammable high molecular material.PP-R pipe easy firing, and release a large amount of heat when burning, flame
Spread speed is fast, and with smoke, drip phenomenon, Yi Yinqi large area fire causes huge prestige to people's security of the lives and property
The side of body.
And the polymer Jing Guo flame retardant treatment, compared with the same type of material without flame retardant treatment, the former is difficult to burn, and
Flame propagation velocity is substantially reduced, and is helped that fire is prevented to be formed and spread, is improved product safety in utilization.PP-R pipe is carried out
It is flame-retardant modified, its fire savety can be improved.Therefore the flame-retardant modified of research PP-R pipe has very important realistic meaning.
[summary of the invention]
It is poly- that it is an object of the invention to overcome the deficiencies of the prior art and provide a kind of fiber reinforcement random copolymerizations of flame retardant type
Propylene multiple tube and preparation method thereof.
The purpose of the present invention is achieved through the following technical solutions:
A kind of flame retardant type fiber reinforcement polypropylene random copolymer composite tube, which is characterized in that it includes outer layer, middle layer with
And internal layer, middle layer is set between outer layer and internal layer；The material of the outer layer is fire-retardant particle and random copolymerization poly- third
Alkene particle, wherein mass fraction of the fire-retardant particle in cladding material is 0.5~4%；Fire-retardant particle is that ultra-fine titanium silicide is compound
Object.Tubing outer layer is the atactic copolymerized polypropene of flame retardant type, ensure that the heat-fusible connectivity of plastic conduit.The outer layer
Material be fire-retardant particle and atactic copolymerized polypropene particle, wherein mass fraction of the fire-retardant particle in cladding material be 0.5~
4%.
Fire-retardant particle is ultra-fine titanium silicide compound；
The preparation method of fire-retardant particle, the specific steps are that:
Dry grinding is carried out to the mixture of ultra-fine titanium silicide and magnesium hydroxide, mixes powder adequately, then
Abrasive material is transferred in the high-temperature laser agglomerating chamber of nitrogen protection again, carries out laser Fast Sintering, power is in sintering process
800W, abrasive material tile with a thickness of 1mm, sintering rate 1m/min, and ultra-fine titanium silicide compound is prepared.Ultra-fine titanium silicide
Mass ratio with magnesium hydroxide is 1:3~1:5.
It using the method for ball mill dry grinding, controls in process of lapping, grinding zirconium strain average grain diameter is 1~2mm, filling
60~75v% of volume, grinding revolving speed are 1000~1500r/min, and milling time is 1~3 hour.
Ultra-fine titanium silicide, which has, to be evenly distributed, large specific surface area, high surface activity, and high temperature resistant and anti-oxidant has resistance
Fuel efficiency fruit, and magnesium hydroxide itself is used as fire retardant, can be further improved the flame retardant effect of final products.
Tubing middle layer is product function layer, and the addition of fiber enhances the rigidity of tubing, and improves tubing resistance to pressure
Energy.The material of the middle layer is the atactic copolymerized polypropene particle of silicon dioxide fibre enhancing, and silicon dioxide fibre is in
Mass fraction in the material of interbed is 20~28%, and silicon dioxide fibre length is 4-8 millimeters.
Inner tubing layers guarantee good sanitation performance when pipeline water delivery, fully meet the requirement of drinking water material.Described
The material of internal layer is to contain nano silver ion antibiotic polypropylene agglomerate and atactic copolymerized polypropene particle.Nano silver ion antibiotic is poly-
Mass fraction of the propylene master batch in the material of internal layer is 5~15%.
The preparation method of the tubing intermediate layer material " fiber reinforcement atactic copolymerized polypropene master batch ", specific steps
Are as follows:
Using atactic copolymerized polypropene master batch as raw material, antioxidant, silica short glass fiber, compatilizer, white oil are added, is used
Blender is stirred；Fiber reinforcement type is prepared through pelleter pelletizing using dual-screw pelletizer melting extrusion again
Atactic copolymerized polypropene master batch.
In fiber reinforcement type atactic copolymerized polypropene master batch, the mass fraction of fiber is 20~28%, the length of fiber
For 4~8mm.
The preparation method of the Inner tubing layers material " antimicrobial form atactic copolymerized polypropene master batch ", the specific steps are that:
Using atactic copolymerized polypropene master batch as raw material, nano silver system layered inorganic antibacterial agent is added, the two blending is carried out, melts
It is granulated and squeezes out after melting, pelletizing.
The specific preparation method of tubing:
A kind of flame retardant type fiber reinforcement polypropylene random copolymer composite tube of the application, by fire-retardant particle and random copolymerization poly- third
Alkene master batch is used as outer layer raw material after mixing evenly, and fiber reinforcement atactic copolymerized polypropene master batch is as middle layer raw material, antimicrobial form
Atactic copolymerized polypropene master batch is as internal layer raw material, and by three single screw extrusion machine melting extrusions, jacket temperature is 60 ± 30
DEG C, head temperature is 200 ± 25 DEG C, and die head temperature is 210 ± 25 DEG C, controls the screw speed of three extruders, is controlled with this
It is multiple to prepare flame retardant type fiber reinforcement atactic copolymerized polypropene so that three layers of ratio is 1:1:1 for the extrusion output of trilaminate material processed
Close pipe.
Compared with prior art, the positive effect of the present invention is:
The fiber-reinforced layer resin of the application uses atactic copolymerized polypropene, improves the low-temperature impact performance of tubing, with
And the pressure-resistant performance of tubing.The fire-retardant atactic copolymerized polypropene layer resin of the application is total to using the random of fire-retardant master granule is added to
Poly- polypropylene improves the flame retardant property of tubing.
The advantages of flame retardant type fiber reinforcement atactic copolymerized polypropene three-layer composite pipe of the present invention: by introducing dioxy
SiClx fiber functional layer improves the pressure-resistant performance of tubing and the rigidity of tubing, and the linear expansion coefficient of product obtains
Biggish reduction；By the length for adjusting glass fibre, it is ensured that under the premise of tubing high voltage performance, linear expansion coefficient can be dropped to
1/3 to the 1/4 of polypropylene material.Secondly the atactic copolymerized polypropene of flame retardant type, the flame retardant property of material have obtained biggish change
It is kind, improve the fire-protection rating of product；The addition of last antibacterial agent, so that pipeline when conveying drinking water, is not easy inside pipeline
Bacterium is bred, achievees the purpose that antibacterial bacteriostatic, sanitation performance are more preferable.The invention can be used for cold hot water piping system in building,
Building main riser system, air conditioning pipe system and other industrial pipes.
[Detailed description of the invention]
Fig. 1 is the structural schematic diagram of embodiments herein 1；
The label in accompanying drawing is: 1 internal layer, 2 middle layers, 3 outer layers.
[specific embodiment]
The tool of flame retardant type fiber reinforcement atactic copolymerized polypropene three-layer composite pipe of the present invention presented below and preparation method thereof
Body embodiment.
Embodiment 1
A kind of fiber reinforcement polypropylene random copolymer composite tube of flame retardant type, as shown in Figure 1, which is characterized in that it is wrapped
Containing outer layer, middle layer and internal layer, middle layer is set between outer layer and internal layer；Outer layer is the random copolymerization poly- third of flame retardant type
Alkene, middle layer are the atactic copolymerized polypropene of silicon dioxide fibre enhancing, and internal layer is the random copolymerization containing antibacterial matrices poly- third
Alkene.
(1) tubing cladding material is fire-retardant particle and atactic copolymerized polypropene particle, wherein fire-retardant particle is in cladding material
In mass fraction be 2%.
Fire-retardant particle is ultra-fine titanium silicide compound；
The preparation method of fire-retardant particle, the specific steps are that:
Dry grinding is carried out to the mixture of ultra-fine titanium silicide and magnesium hydroxide, mixes powder adequately, then
Abrasive material is transferred in the high-temperature laser agglomerating chamber of nitrogen protection again, carries out laser Fast Sintering, power is in sintering process
800W, abrasive material tile with a thickness of 1mm, sintering rate 1m/min, and ultra-fine titanium silicide compound is prepared.Ultra-fine titanium silicide
Mass ratio with magnesium hydroxide is 1:3.
It using the method for ball mill dry grinding, controls in process of lapping, grinding zirconium strain average grain diameter is 1~2mm, filling
60~75v% of volume, grinding revolving speed are 1000~1500r/min, and milling time is 1~3 hour.
(2) material of tubing middle layer is the atactic copolymerized polypropene particle of silicon dioxide fibre enhancing, and silica is fine
Tieing up the mass fraction in the material of middle layer is 24%, and silicon dioxide fibre length is 4-8mm.
(3) material of Inner tubing layers is the antibiotic polypropylene master batch containing nano-silver ionic and atactic copolymerized polypropene grain
Son.Mass fraction of the nano silver ion antibiotic polypropylene agglomerate in the material of internal layer is 4~16%.
One, the preparation method of the tubing intermediate layer material " fiber reinforcement atactic copolymerized polypropene master batch " is specific to walk
Suddenly are as follows:
Using atactic copolymerized polypropene master batch as raw material, antioxidant, silica short glass fiber, compatilizer, white oil are added, is used
Blender is stirred；Fiber reinforcement type is prepared through pelleter pelletizing using dual-screw pelletizer melting extrusion again
Atactic copolymerized polypropene master batch.
In fiber reinforcement type atactic copolymerized polypropene master batch, the mass fraction of fiber is 20%, and the length of fiber is 4-
8mm。
Two, the preparation method of the Inner tubing layers material " antimicrobial form atactic copolymerized polypropene master batch ", the specific steps are that:
Using atactic copolymerized polypropene master batch as raw material, nano silver system layered inorganic antibacterial agent is added, the two blending is carried out, melts
It is granulated and squeezes out after melting, pelletizing.
Three, the specific preparation method of the tubing:
Outer layer raw material is used as after fire-retardant particle and atactic copolymerized polypropene master batch are uniformly mixed, fiber reinforcement is random
Copolymer polypropylene master batch passes through three lists as internal layer raw material as middle layer raw material, antimicrobial form atactic copolymerized polypropene master batch
Screw extruder melting extrusion, jacket temperature are 60 ± 30 DEG C, and head temperature is 200 ± 25 DEG C, and die head temperature is 210 ± 25
DEG C, the screw speed of three extruders is controlled, the extrusion output of trilaminate material is controlled with this, so that three layers of ratio is 1:1:1,
Prepare the fiber reinforcement polypropylene random copolymer composite tube of flame retardant type.
Performance test:
It is right that multiple tube described in embodiment 1 should meet CJ/T258-2014 " fiber reinforcement polypropylene random copolymer composite tube "
A series of performance requirements of tubing.Wherein multiple tube product axial direction linear expansion coefficient≤0.05mm/m DEG C.
The burning behavior class of the multiple tube is up to state standards GB 8624-2012 " construction material and product burns
Grading performance " B2Grade；And the fire-protection rating of multiple tube reaches EU criteria EN 13501-1:2009 " building products and component
Combustibility classification " D grade.
The anti-microbial property of the internal layer of the multiple tube is the antibiotic property > 99% to Escherichia coli, staphylococcus glucose ball
The antibiotic property > 99% of bacterium.
Embodiment 2
A kind of fiber reinforcement polypropylene random copolymer composite tube of flame retardant type, as shown in Figure 1, which is characterized in that it is wrapped
Containing outer layer, middle layer is arranged in middle layer and internal layer between outer layer and internal layer.Wherein outer layer is the random copolymerization of flame retardant type
Polypropylene, middle layer are the atactic copolymerized polypropene of silicon dioxide fibre enhancing, and internal layer is atactic copolymerized polypropene, it is outer, in, it is interior
Threeply degree accounting is 1:1:1.
(1) tubing cladding material is fire-retardant particle and atactic copolymerized polypropene particle, wherein fire-retardant particle is in cladding material
In mass fraction be 2%.Fire-retardant particle is ultra-fine titanium silicide compound；
The preparation method of fire-retardant particle, the specific steps are that:
Dry grinding is carried out to the mixture of ultra-fine titanium silicide and magnesium hydroxide, mixes powder adequately, then
Abrasive material is transferred in the high-temperature laser agglomerating chamber of nitrogen protection again, carries out laser Fast Sintering, power is in sintering process
800W, abrasive material tile with a thickness of 1mm, sintering rate 1m/min, and ultra-fine titanium silicide compound is prepared.Ultra-fine titanium silicide
Mass ratio with magnesium hydroxide is 1:4.
It using the method for ball mill dry grinding, controls in process of lapping, grinding zirconium strain average grain diameter is 1~2mm, filling
60~75v% of volume, grinding revolving speed are 1000~1500r/min, and milling time is 1~3 hour.
(2) material of tubing middle layer is the atactic copolymerized polypropene particle of silicon dioxide fibre enhancing, and silica is fine
Tieing up the mass fraction in the material of middle layer is 24%, and silicon dioxide fibre length is 4-8mm.Silicon dioxide fibre enhancing
The preparation of atactic copolymerized polypropene master batch is the same as embodiment 1.
(3) material of Inner tubing layers is atactic copolymerized polypropene particle.
The specific preparation method of tubing:
Outer layer raw material is used as after fire-retardant particle and atactic copolymerized polypropene master batch are uniformly mixed, fiber reinforcement is random
Copolymer polypropylene master batch is squeezed as internal layer raw material by three single screw rods as middle layer raw material, atactic copolymerized polypropene master batch
Machine melting extrusion out, jacket temperature are 60 ± 30 DEG C, and head temperature is 200 ± 25 DEG C, and die head temperature is 210 ± 25 DEG C, control
The screw speed of three extruders controls the extrusion output of trilaminate material with this, so that three layers of ratio is 1:1:1, prepares
The fiber reinforcement polypropylene random copolymer composite tube of flame retardant type.
Compared with Example 1, Inner tubing layers do not add antibacterial agent to embodiment 2, do not sterilize, antibacterial function.
Performance test:
Multiple tube as described in example 2 should meet CJ/T 258-2014 " fiber reinforcement polypropylene random copolymer composite tube "
To a series of performance requirements of tubing.Wherein multiple tube product axial direction linear expansion coefficient≤0.05mm/m DEG C.
The burning behavior class of the multiple tube is up to state standards GB 8624-2012 " construction material and product burns
Grading performance " B2Grade；And the fire-protection rating of multiple tube reaches EU criteria EN 13501-1:2009 " building products and component
Combustibility classification " D grade.
Embodiment 3
A kind of polypropylene random copolymer composite tube of flame retardant type, as shown in Figure 1, which is characterized in that it includes outer layer, in
Interbed and internal layer.Its outer layer is the atactic copolymerized polypropene of flame retardant type, and middle layer is atactic copolymerized polypropene, and internal layer is antibacterial
The atactic copolymerized polypropene of type, it is outer, in, interior threeply degree accounting be 1:1:1.
(1) tubing cladding material is fire-retardant particle and atactic copolymerized polypropene particle, wherein fire-retardant particle is in cladding material
In mass fraction be 2%.Fire-retardant particle is ultra-fine titanium silicide compound；
The preparation method of fire-retardant particle, the specific steps are that:
Dry grinding is carried out to the mixture of ultra-fine titanium silicide and magnesium hydroxide, mixes powder adequately, then
Abrasive material is transferred in the high-temperature laser agglomerating chamber of nitrogen protection again, carries out laser Fast Sintering, power is in sintering process
800W, abrasive material tile with a thickness of 1mm, sintering rate 1m/min, and ultra-fine titanium silicide compound is prepared.Ultra-fine titanium silicide
Mass ratio with magnesium hydroxide is 1:5.
It using the method for ball mill dry grinding, controls in process of lapping, grinding zirconium strain average grain diameter is 1~2mm, filling
60~75v% of volume, grinding revolving speed are 1000~1500r/min, and milling time is 1~3 hour.
(2) material of tubing middle layer is atactic copolymerized polypropene particle.
(3) material of Inner tubing layers is the antibiotic polypropylene master batch containing nano-silver ionic and atactic copolymerized polypropene grain
Son.Mass fraction of the nano silver ion antibiotic polypropylene agglomerate in the material of internal layer is 16%.The random copolymerization of antimicrobial form is poly-
The preparation of propylene master batch is the same as embodiment 1.
The specific preparation method of tubing:
Outer layer raw material, random copolymerization poly- third are used as after fire-retardant particle and atactic copolymerized polypropene master batch are uniformly mixed
Alkene master batch is squeezed out as internal layer raw material by three single screw rods as middle layer raw material, antimicrobial form atactic copolymerized polypropene master batch
Machine melting extrusion, jacket temperature are 60 ± 30 DEG C, and head temperature is 200 ± 25 DEG C, and die head temperature is 210 ± 25 DEG C, control three
The screw speed of platform extruder controls the extrusion output of trilaminate material with this, so that three layers of ratio is 1:1:1, prepares resistance
The polypropylene random copolymer composite tube of combustion type.
Compared with Example 1, tubing middle layer does not carry out silicon dioxide fibre enhancing, the axial line of tubing to embodiment 3
The coefficient of expansion is risen, but the manufacturing cost of product is declined.
Performance test:
Multiple tube described in embodiment 3 should meet GB/T 18742.2-2017 " hot and cold water polypropylene pipe system the 2nd
Part tubing " to a series of performance requirements of tubing.
The burning behavior class of the multiple tube is up to state standards GB 8624-2012 " construction material and product burns
Grading performance " B2Grade；And the fire-protection rating of multiple tube reaches EU criteria EN 13501-1:2009 " building products and component
Combustibility classification " D grade.
The anti-microbial property of the internal layer of the multiple tube is the antibiotic property > 99% to Escherichia coli, staphylococcus glucose ball
The antibiotic property > 99% of bacterium.
Embodiment 4
The application also provides a kind of flame retardant type bilayer polypropylene random copolymer composite tube, is divided into outer layer and internal layer, outer layer
Material is the atactic copolymerized polypropene of flame retardant type, and inner layer material is atactic copolymerized polypropene.Outside, interior two layers of thickness accounting is 1:
2。
(1) tubing cladding material is fire-retardant particle and atactic copolymerized polypropene particle, wherein fire-retardant particle is in cladding material
In mass fraction be 2%.The preparation method of fire-retardant particle, the specific steps are that:
Dry grinding is carried out to the mixture of ultra-fine titanium silicide and magnesium hydroxide, mixes powder adequately, then
Abrasive material is transferred in the high-temperature laser agglomerating chamber of nitrogen protection again, carries out laser Fast Sintering, power is in sintering process
800W, abrasive material tile with a thickness of 1mm, sintering rate 1m/min, and ultra-fine titanium silicide compound is prepared.Ultra-fine titanium silicide
Mass ratio with magnesium hydroxide is 1:5.
It using the method for ball mill dry grinding, controls in process of lapping, grinding zirconium strain average grain diameter is 1~2mm, filling
60~75v% of volume, grinding revolving speed are 1000~1500r/min, and milling time is 1~3 hour.
(2) tubing does not have middle layer.
(3) material of Inner tubing layers is atactic copolymerized polypropene particle.
The specific preparation method of tubing:
Outer layer raw material, random copolymerization poly- third are used as after fire-retardant particle and atactic copolymerized polypropene master batch are uniformly mixed
Alkene master batch is as internal layer raw material, and by two single screw extrusion machine melting extrusions, jacket temperature is 60 ± 30 DEG C, and head temperature is
200 ± 25 DEG C, die head temperature be 210 ± 25 DEG C, control the screw speed of two extruders, with this come control materials at two layers squeeze
Output so that outside, the ratio of internal layer be 1:2, prepare the polypropylene random copolymer composite tube of flame retardant type.
Compared with Example 1, tubing is divided into outer, internal layer to embodiment 4, without middle layer；Inner tubing layers do not add antibacterial
Agent.The simplified manufacturing process of product, manufacturing cost are declined.
Performance test:
Multiple tube as described in example 4 should meet GB/T 18742.2-2017 " hot and cold water polypropylene pipe system the 2nd
Part tubing " to a series of performance requirements of tubing.
The burning behavior class of the multiple tube is up to state standards GB 8624-2012 " construction material and product burns
Grading performance " B2Grade；And the fire-protection rating of multiple tube reaches EU criteria EN 13501-1:2009 " building products and component
Combustibility classification " D grade.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, without departing from the inventive concept of the premise, can also make several improvements and modifications, these improvements and modifications also should be regarded as
In protection scope of the present invention.
Claims (7)
1. a kind of flame retardant type fiber reinforcement polypropylene random copolymer composite tube, which is characterized in that it includes outer layer, middle layer and
Middle layer is arranged in internal layer between outer layer and internal layer；The material of the outer layer is fire-retardant particle and atactic copolymerized polypropene
Particle, wherein mass fraction of the fire-retardant particle in cladding material is 0.5~4%；Fire-retardant particle is titanium silicide compound.
2. a kind of flame retardant type fiber reinforcement polypropylene random copolymer composite tube as described in claim 1, which is characterized in that fire-retardant
The preparation method of particle, the specific steps are that:
Dry grinding is carried out to the mixture of ultra-fine titanium silicide and magnesium hydroxide, mixes powder adequately, then again
Abrasive material is transferred in the high-temperature laser agglomerating chamber of nitrogen protection, carries out laser Fast Sintering, and power is 800W in sintering process,
Abrasive material tiles with a thickness of 1mm, sintering rate 1m/min, and ultra-fine titanium silicide compound is prepared；Ultra-fine titanium silicide and hydrogen
The mass ratio of magnesia is 1:3~1:5.
3. a kind of flame retardant type fiber reinforcement polypropylene random copolymer composite tube as described in claim 1, which is characterized in that described
Middle layer material be silicon dioxide fibre enhancing atactic copolymerized polypropene particle, material of the silicon dioxide fibre in middle layer
Mass fraction in material is 20~28%, and silicon dioxide fibre length is 4-8 millimeters.
4. a kind of flame retardant type fiber reinforcement polypropylene random copolymer composite tube as described in claim 1, which is characterized in that described
Internal layer material be contain nano silver ion antibiotic polypropylene agglomerate and atactic copolymerized polypropene particle；Nano silver ion antibiotic
Mass fraction of the polypropylene agglomerate in the material of internal layer is 5~15%.
5. a kind of flame retardant type fiber reinforcement polypropylene random copolymer composite tube as described in claim 1, which is characterized in that described
The preparation method of the fiber reinforcement atactic copolymerized polypropene master batch of tubing intermediate layer material, the specific steps are that:
Using atactic copolymerized polypropene master batch as raw material, antioxidant, silica short glass fiber, compatilizer, white oil are added, using stirring
Machine is stirred；It is random to be prepared through pelleter pelletizing using dual-screw pelletizer melting extrusion for fiber reinforcement type again
Copolymer polypropylene master batch.
In fiber reinforcement type atactic copolymerized polypropene master batch, the mass fraction of fiber is 20~28%, the length of fiber is 4~
8mm。
6. a kind of flame retardant type fiber reinforcement polypropylene random copolymer composite tube as described in claim 1, which is characterized in that described
The preparation method of antimicrobial form atactic copolymerized polypropene master batch in Inner tubing layers material, the specific steps are that: it is poly- with random copolymerization
Propylene master batch is raw material, adds nano silver system layered inorganic antibacterial agent, carries out the two blending, is granulated and squeezes out after melting, pelletizing is
It can.
7. a kind of preparation method of flame retardant type fiber reinforcement polypropylene random copolymer composite tube as described in claim 1, special
Sign is, regard fire-retardant particle and atactic copolymerized polypropene master batch as outer layer raw material, fiber reinforcement random copolymerization after mixing evenly
Polypropylene agglomerate passes through three single screw rods as internal layer raw material as middle layer raw material, antimicrobial form atactic copolymerized polypropene master batch
Extruder melting extrusion, jacket temperature are 60 ± 30 DEG C, and head temperature is 200 ± 25 DEG C, and die head temperature is 210 ± 25 DEG C, control
The screw speed of three extruders is made, the extrusion output of trilaminate material is controlled with this, so that three layers of ratio is 1:1:1, preparation
Flame retardant type fiber reinforcement polypropylene random copolymer composite tube out.
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