CN107501742A - A kind of heat-resistance polypropylene and preparation method thereof - Google Patents
A kind of heat-resistance polypropylene and preparation method thereof Download PDFInfo
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- 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
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Abstract
The invention discloses a kind of heat-resistance polypropylene and preparation method thereof, while solving precipitated calcium carbonate improves polyacrylic fusing point, the problem of polyacrylic impact property can be caused to decline, the mechanical property of polypropylene material is influenceed, its drip irrigation device is：A kind of heat-resistance polypropylene, composed of the following components, the mass fraction of each component and each component is as follows：60 ~ 70 parts of polypropylene, 10 ~ 15 parts of silicones microballoon, 15 ~ 25 parts of precipitated calcium carbonate, 15 ~ 25 parts of mica powder, 5 ~ 8 parts of compatilizer, 0.5 ~ 1.0 part of organophosphorus ester salt nucleator, 0.5 ~ 1.0 part of silane coupler, 0.1 ~ 0.5 part of antioxidant, reach on the premise of polypropylene rigid is ensured, improved polyacrylic heat resistance.
Description
Technical field
The present invention relates to insulating pot manufacture, more particularly to a kind of heat-resistance polypropylene and preparation method thereof.
Background technology
Insulating pot has that firing rate is fast, and high insulating effect, filtering function is strong using steam intelligent-induction temperature control,
The advantages that style is more, therefore used by huge numbers of families.At present, insulating pot processing technology mainly first with polypropylene blow moulding or
Person's injection molding is upper and lower kettle body, then combines the upper and lower kettle body after shaping, and then forms complete part.
Polyacrylic yield and dosage are very big, are a kind of general plastics for having very high cost performance.Due to polypropylene price
It is cheap, high comprehensive performance, while easily modified processing, therefore obtained widely paying close attention to.But its molecular chain structure is present
Tertiary carbon atom so that easily the oxygen in by air, ultraviolet and heat act on polypropylene, and then thermo-oxidative ageing degraded, shadow occurs
The use of polypropylene material and products thereof is rung, or even influences whether the original mechanical performance of polypropylene and products thereof and using valency
Value.Therefore in recent years, polyacrylic heat resistance is widely paid attention to by people.
《Chinese Plastics》The 5th phase of volume 14 in May, 2000 is delivered by Luoyang Petrochemical Complex research institute《A variety of inorganic fills
Not same-action of the material in polypropylene co-mixing system》In point out, in a variety of inorganic filling materials, precipitated calcium carbonate makes poly- third
The fusing point raising of alkene is higher, has larger lifting to the heat resistance of material, but it can lead while material thermal resistance is lifted
Cause polyacrylic impact property to decline, influence the mechanical property of polypropylene material.
The content of the invention
First purpose of the present invention is to provide a kind of heat-resistance polypropylene, on the premise of polypropylene rigid is ensured,
Improve polyacrylic heat resistance.
The present invention above-mentioned technical purpose technical scheme is that：
A kind of heat-resistance polypropylene, composed of the following components, the mass fraction of each component and each component is as follows：Polypropylene 60~70
Part, 10~15 parts of silicones microballoon, 15~25 parts of precipitated calcium carbonate, 15~25 parts of mica powder, 5~8 parts of compatilizer, organic phosphoric acid
0.5~1.0 part of ester salt nucleator, 0.5~1.0 part of silane coupler, 0.1~0.5 part of antioxidant.
By using above-mentioned technical proposal, using polypropylene as base material, the filling of precipitated calcium carbonate can play change heat
Coefficient, the effect of polyacrylic fusing point is improved, add silicones microballoon wherein, silicones is a kind of typical organic and inorganic
Hydridization macromolecule, its molecular backbone are the inorganic structure of Si-O keys, and side chain is organic group, has excellent heat resistance, lubrication
Property, gas permeability, compatibility, while have the toughness and high resiliency of high polymer material concurrently, microballoon is made into, can reduce surface should
Power, reduce in system and rub, can further improve polypropylene heat resistance and play the effect of reinforcement；Mica powder is a kind of
The silicate of layer structure, structure are clipped the compound silica layer that one layer of alumina octahedral form by two layers of silicon-oxy tetrahedron, can
Polyacrylic heat resistance and rigidity are improved, strengthens dimensional stability and high temperature resistant creep properties；The addition of compatilizer can play drop
Low interfacial tension, increase interfacial layer thickness, the effect for reducing dispersed particle size, ultimately form system micro- with even macroscopic
See the thermodynamically stable Phase stracture of phase separation feature；Organophosphorus ester salt nucleator is alpha-crystal form nucleator, has to improve and gathers
The effect of propylene product rigidity and heat resistance；The addition of silane coupler can improve precipitated calcium carbonate and mica powder and poly- third
Bond properties between alkene, while precipitated calcium carbonate and mica powder can be modified, the heat resistance and rigidity of reinforcing material；
The addition of antioxidant can delay the aerial oxidative degradation of polypropylene, pass through the synergy between said components, lightweight
Calcium carbonate, mica powder and silicones microballoon form reinforced structure interspersed mutually, simultaneously because the spherical structure of silicones microballoon
And surface has organic group, the surface stress between filler and interior friction can be reduced, reduces viscosity, improves processability
Energy；Simultaneously by modification of the silane coupler to precipitated calcium carbonate and mica powder, the table of precipitated calcium carbonate and mica powder is improved
Face performance, and then improve heat resistance, by the synergy of organophosphorus ester salt nucleator and organic siliconresin microballoon, into
In nuclear process, polypropylene spherocrystal is extruded mutually in developmental process, reach refinement spherocrystal, improve crosslinking consistency, improve poly-
The structural strength of propylene.
Preferably, the polypropylene includes HOPP and COPP, its mass ratio is HOPP:
COPP=3: 1.
By using above-mentioned technical proposal, vinyl monomer is free of in HOPP strand, therefore strand is regular
Degree is very high, and intensity is higher；By polypropene blended with copolymerization, COPP can be used in supplementing the impact resistance of HOPP
Property and toughness；3: 1 blending can improve its toughness on the premise of strength of PP is ensured.
Preferably, the COPP includes block copolymerization polypropylene and atactic copolymerized polypropene, its mass ratio
For block copolymerization polypropylene: atactic copolymerized polypropene=4: 1.
It is preferable under the impact resistance of block copolymerization polypropylene by using above-mentioned technical proposal, but easy aging, it is random common
Poly- Properties of Polypropylene is preferable but expensive, although and atactic copolymerized polypropene good toughness, the addition of atactic copolymerized polypropene
The toughness and heat endurance of block copolymerization polypropylene can be supplemented.
Preferably, the silicones microballoon is that phenyl polysiloxane microballoon, vinyl polysiloxane microballoon, methyl silicon resin are micro-
The one of which of ball or two kinds.
By using above-mentioned technical proposal, the phenyl in phenyl polysiloxane microballoon can improve silicones microballoon and polypropylene
Blending, improve processing characteristics；Vinyl polysiloxane microballoon can improve the curing performance of silicones and assign it is coupled, from
And improve polyacrylic rigidity；The methyl of methyl silicon resin microballoon can assign silicones heat endurance, hydrophobicity, release property,
Arc resistance, so as to further lift polyacrylic heat endurance.
Preferably, the organophosphorus ester salt nucleator elects double (4- tert-butyl-phenyls) sodium phosphate, 2,2 '-methylene as
Base-bis- (4,6- di-tert-butyl-phenyl) sodium phosphate, 2,2 '-di-2-ethylhexylphosphine oxide (4,6- di-tert-butyl-phenyl) aluminum phosphate basic salt its
Middle one or two.
By using above-mentioned technical proposal, double (4- tert-butyl-phenyls) sodium phosphates be used for it is polyacrylic rigidity enhanced, modified, with
Double (4- tert-butyl-phenyls) sodium phosphates are compared, and 2,2, the 2 '-Asia of 2 '-methylene-bis- (4,6- di-tert-butyl-phenyl) sodium phosphate sum
Double (4,6- di-tert-butyl-phenyl) the aluminum phosphate basic salt nucleation efficiencies of methyl can be improved further, and can effectively improve poly- third
The heat endurance of alkene, polyacrylic bending modulus and tensile strength are improved, significantly improves mechanical performance.
Preferably, the compatilizer is the one of which of maleic anhydride inoculated polypropylene or acrylic acid-grafted polypropylene
Or two kinds.
By using above-mentioned technical proposal, the addition of graft polypropylene is in addition to it can improve the compatibility of system, also
Polyacrylic toughness increase can be made, equally there is improvement to polyacrylic intensity and rigidity.
Preferably, the silane coupler elects γ-aminopropyl triethoxysilane, γ-(methacryloxypropyl) third as
Base trimethoxy silane, vinyltrimethoxy silane, N- (β-aminoethyl)-γ-aminopropyltriethoxy dimethoxysilane its
Middle one or two.
By using above-mentioned technical proposal, gamma-aminopropyl-triethoxy-silane contains different activities group amino and ethoxy
Base, the adhesive property between inorganic filler and organic polymer can be strengthened, improve polyacrylic mechanical strength；γ-(methyl-prop
Alkene acyl-oxygen) propyl trimethoxy silicane can improve the adhesive property of inorganic filler and organic polymer surface, and it is multiple so as to improve
The mechanical strength of condensation material, meanwhile, it is capable to make polypropylene that there is higher conservation rate under hygrometric state, enhance the electrical property of material
Energy；Vinyltrimethoxy silane is applied to the improvement of adhesive property between Pp System inorganic filler and organic material；N-
(β-aminoethyl)-γ-aminopropyltriethoxy dimethoxysilane be applied to the inorganic filler of comprehensive silicon class and high-molecular organic material it
Between surface cementability improvement, mechanical performance, electrical property and the ageing resistace of composite can be improved.
Preferably, it according to mass ratio is primary antioxidant that the antioxidant, which is main antioxidant 1010 and auxiliary antioxidant 168,
1010: the compounding of auxiliary antioxidant 168=1: 2 forms.
By using above-mentioned technical proposal, a small amount of antioxidant can effectively improve polyacrylic oxytolerant aging effect, carry
The processing stability of high material, by primary antioxidant 1010 and auxiliary antioxidant 168 according to 1: 2 compounding, both associations can be made
Reach optimal with effect, polyacrylic thermal oxidation stability performance is reached optimal.
Second object of the present invention is to provide a kind of preparation method of heat-resistance polypropylene.
The present invention above-mentioned technical purpose technical scheme is that：
A kind of preparation method of heat-resistance polypropylene, is made up of following steps：
Step1 is by polypropylene, silicones microballoon, precipitated calcium carbonate, mica powder, compatilizer, organophosphorus ester salt nucleator, silane
Coupling agent, antioxidant stir in high mixer, obtain mixed material；
Mixed material by double screw extruder extruding pelletization, is obtained polypropylene particles, double-screw extruder screw temperature by Step2
Degree and screw speed are as follows：One 190 DEG C of area's temperature, two 195 DEG C of area's temperature, three 200 DEG C of area's temperature, four 200 DEG C of area's temperature, five
200 DEG C of area's temperature, six 200 DEG C of area's temperature, seven 195 DEG C of area's temperature, main-machine screw rotating speed 200r/min.
By using above-mentioned technical proposal, melt blending is carried out by double screw extruder, realizes changing for polypropylene material
Property, charging is easy, reduces solid accumulation, and material residence time in double screw extruder is short, holdup time narrowly distributing, venting quality
Can be excellent, blending, plasticizing effect are good.
Preferably, polypropylene particles obtained by Step2 dry 2h at 110 DEG C, and room temperature is cooled under nitrogen atmosphere.
By using above-mentioned technical proposal, in high temperature drying course, secondary crystallization occurs for the amorphous area of polypropylene material,
Make polyacrylic crystallization more perfect, and the strand of highly crystallized loses locomitivity and is fixed in lattice, resistance is curved
The ability enhancing of song deformation, therefore mechanical property has obvious rising.
In summary, the invention has the advantages that：
1st, heat-resistance polypropylene of the present invention is used as inorganic filler by adding precipitated calcium carbonate, organic siliconresin microballoon, mica powder, changes
It is apt to polyacrylic hot coefficient, lifts polyacrylic heat resistance, meanwhile, cooperateed with by organophosphorus ester salt nucleator with mica powder
Use, accelerate crystalline rate, make crystallization finer and close, while extruded and crystallized by organic siliconresin microballoon, crystallization of refinement, enter one
Step promotes fine grain size, and then plays enhancing, toughness reinforcing, the effect for improving heat resistance；
2nd, heat-resistance polypropylene of the present invention makes polypropylene amorphous area that secondary crystallization occur, makes polyacrylic knot by being dried in high temperature
It is brilliant more perfect, and the strand of highly crystallized loses locomitivity and is fixed in lattice, resists the ability of flexural deformation
Enhancing, therefore mechanical property has obvious rising.
Embodiment
HOPP, block copolymerization polypropylene, atactic copolymerized polypropene are mixed according to mass ratio 12: 4: 1, and this hair is made
Bright pp material used.
Precipitated calcium carbonate density used herein is 2.7g/m3, and 1339 DEG C of fusing point, particle is column.
It is silicones microballoon A to choose phenyl polysiloxane microballoon numbering；
It is silicones microballoon B to choose vinyl polysiloxane microballoon numbering；
It is silicones microballoon C to choose methyl silicon resin microballoon numbering；
It is silicones microballoon D to choose phenyl polysiloxane microballoon and vinyl polysiloxane microballoon and mix numbering according to mass ratio 2: 1；
It is silicones microballoon E to choose phenyl polysiloxane microballoon and methyl silicon resin microballoon and mix numbering according to mass ratio 1: 1.
It is organophosphorus ester salt nucleator A to choose double (4- tert-butyl-phenyls) sodium phosphate numberings；
2 are chosen, 2 '-methylene-bis- (4,6- di-tert-butyl-phenyl) sodium phosphate numbering is organophosphorus ester salt nucleator B；
2 are chosen, 2 '-di-2-ethylhexylphosphine oxide (4,6- di-tert-butyl-phenyl) aluminum phosphate basic salt numbering is organophosphorus ester salt nucleator C；
Double (4- tert-butyl-phenyls) sodium phosphates and 2 are chosen, 2 '-di-2-ethylhexylphosphine oxide (4,6- di-tert-butyl-phenyl) aluminum phosphate basic salt is pressed
It is organophosphorus ester salt nucleator D that numbering, which is blended, according to mass ratio 1: 1；
Selection 2,2 '-methylene-bis- (4,6- di-tert-butyl-phenyl) sodium phosphate and 2,2 '-di-2-ethylhexylphosphine oxide (4,6- di-tert-butyls
Base) aluminum phosphate basic salt according to mass ratio 1: 1 be blended numbering be organophosphorus ester salt nucleator E.
It is compatilizer A to choose maleic anhydride inoculated polypropylene numbering；
It is compatilizer B to choose acrylic acid-grafted polypropylene numbering；
Choose maleic anhydride inoculated polypropylene and acrylic acid-grafted polypropylene blending is used as Compatibilizer C.
It is silane coupling A to choose gamma-aminopropyl-triethoxy-silane numbering；
It is silane coupler B to choose γ-(methacryloxypropyl) propyl trimethoxy silicane numbering；
It is silane coupler C to choose vinyltrimethoxy silane numbering；
It is silane coupler D to choose N- (β-aminoethyl)-γ-aminopropyltriethoxy dimethoxysilane numbering；
Gamma-aminopropyl-triethoxy-silane and N- (β-aminoethyl)-γ-aminopropyltriethoxy dimethoxysilane are chosen according to quality
It is silane coupler E than 1: 1 blending numbering.
According to mass ratio it is main antioxidant 1010: auxiliary antioxidant 168=by primary antioxidant 1010 and auxiliary antioxidant 168
Antioxidant used in the present invention is made in 1: 2 compounding.
Embodiment one
Step1 by 60 parts of polypropylene, silicones microballoon A10 parts, 15 parts of precipitated calcium carbonate, 15 parts of mica powder, compatilizer A5 parts, have
Machine phosphate ester salt nucleator A0.5 parts, 0.5 part of silane coupling A, 0.5 part of antioxidant stir in high mixer, are mixed
Close raw material；
Mixed material by double screw extruder extruding pelletization, is obtained polypropylene particles, double-screw extruder screw temperature by Step2
Degree and screw speed are as follows：One 190 DEG C of area's temperature, two 195 DEG C of area's temperature, three 200 DEG C of area's temperature, four 200 DEG C of area's temperature, five
200 DEG C of area's temperature, six 200 DEG C of area's temperature, seven 195 DEG C of area's temperature, main-machine screw rotating speed 200r/min；
Gained polypropylene particles are dried 2h by Step3 at 110 DEG C, and are cooled to room temperature under nitrogen atmosphere.
Embodiment two
Step1 by 70 parts of polypropylene, silicones microballoon B15 parts, 25 parts of precipitated calcium carbonate, 25 parts of mica powder, compatilizer B8 parts, have
Machine phosphate ester salt nucleator B1.0 parts, silane coupler B1.0 parts, 0.5 part of antioxidant stir in high mixer, are mixed
Close raw material；
Mixed material by double screw extruder extruding pelletization, is obtained polypropylene particles, double-screw extruder screw temperature by Step2
Degree and screw speed are as follows：One 190 DEG C of area's temperature, two 195 DEG C of area's temperature, three 200 DEG C of area's temperature, four 200 DEG C of area's temperature, five
200 DEG C of area's temperature, six 200 DEG C of area's temperature, seven 195 DEG C of area's temperature, main-machine screw rotating speed 200r/min；
Gained polypropylene particles are dried 2h by Step3 at 110 DEG C, and are cooled to room temperature under nitrogen atmosphere.
Embodiment three
Step1 by 65 parts of polypropylene, silicones microballoon C12 parts, 20 parts of precipitated calcium carbonate, 20 parts of mica powder, 6 parts of Compatibilizer C, have
Machine phosphate ester salt nucleator C0.6 parts, silane coupler C0.6 parts, 0.2 part of antioxidant stir in high mixer, are mixed
Close raw material；
Mixed material by double screw extruder extruding pelletization, is obtained polypropylene particles, double-screw extruder screw temperature by Step2
Degree and screw speed are as follows：One 190 DEG C of area's temperature, two 195 DEG C of area's temperature, three 200 DEG C of area's temperature, four 200 DEG C of area's temperature, five
200 DEG C of area's temperature, six 200 DEG C of area's temperature, seven 195 DEG C of area's temperature, main-machine screw rotating speed 200r/min；
Gained polypropylene particles are dried 2h by Step3 at 110 DEG C, and are cooled to room temperature under nitrogen atmosphere.
Example IV
Step1 by 68 parts of polypropylene, silicones microballoon D12 parts, 24 parts of precipitated calcium carbonate, 18 parts of mica powder, 6 parts of Compatibilizer C, have
Machine phosphate ester salt nucleator D0.7 parts, silane coupler D0.8 parts, 0.25 part of antioxidant stir in high mixer, are mixed
Close raw material；
Mixed material by double screw extruder extruding pelletization, is obtained polypropylene particles, double-screw extruder screw temperature by Step2
Degree and screw speed are as follows：One 190 DEG C of area's temperature, two 195 DEG C of area's temperature, three 200 DEG C of area's temperature, four 200 DEG C of area's temperature, five
200 DEG C of area's temperature, six 200 DEG C of area's temperature, seven 195 DEG C of area's temperature, main-machine screw rotating speed 200r/min；
Gained polypropylene particles are dried 2h by Step3 at 110 DEG C, and are cooled to room temperature under nitrogen atmosphere.
Embodiment five
Step1 by 70 parts of polypropylene, silicones microballoon E10 parts, 20 parts of precipitated calcium carbonate, 20 parts of mica powder, 5 parts of Compatibilizer C, have
Machine phosphate ester salt nucleator E0.5 parts, silane coupler E0.8 parts, 0.2 part of antioxidant stir in high mixer, are mixed
Close raw material；
Mixed material by double screw extruder extruding pelletization, is obtained polypropylene particles, double-screw extruder screw temperature by Step2
Degree and screw speed are as follows：One 190 DEG C of area's temperature, two 195 DEG C of area's temperature, three 200 DEG C of area's temperature, four 200 DEG C of area's temperature, five
200 DEG C of area's temperature, six 200 DEG C of area's temperature, seven 195 DEG C of area's temperature, main-machine screw rotating speed 200r/min；
Gained polypropylene particles are dried 2h by Step3 at 110 DEG C, and are cooled to room temperature under nitrogen atmosphere.
Polypropylene material made from above-described embodiment is made up to 20x10x50mm testing bar of injection molding, and in room
Placed 24 hours under warm (25 DEG C, 101.325kPa), following performance test is carried out to it：
Tensile property is tested：Tested with reference to ASTM D638-00, draw speed 50mm/min；
Impact property is tested：With reference to ASTM D236-00；
Bending modulus is tested：With reference to GB/T 9341-2008, decrease speed is 2mm/min during test；
Heat distortion temperature：Tested with reference to ISO75-2, heating rate is 2 DEG C/min, load 0.45MPa.
Test result see the table below：
| Embodiment one | Embodiment two | Embodiment three | Example IV | Embodiment five | |
| Tensile strength (MPa) | 39.8 | 40.5 | 42.1 | 41.7 | 42.1 |
| Impact strength (J/m) | 71.8 | 72.4 | 73.6 | 74.2 | 74.0 |
| Bending modulus (MPa) | 2600 | 2580 | 2610 | 2645 | 2650 |
| Heat distortion temperature (DEG C) | 129.7 | 130.1 | 130.5 | 130.8 | 131.2 |
To sum up, choose embodiment five and be used as optimum embodiment.
Comparative example one
Comparative example one is embodiment five without polypropylene material made from step3.
Comparative example two
Comparative example two is that embodiment five replaces polypropylene material made from COPP with HOPP.
Comparative example three
Comparative example three is that embodiment five does not add polypropylene material made from silicones microballoon.
Comparative example four
Comparative example four is that embodiment five does not add polypropylene material made from organic phosphate ester salt nucleator.
Comparative example five
Comparative example five is commercial polypropylene materials A, and its QC report displays are added with 20wt% precipitated calcium carbonate.
Comparative example six
Comparative example five is mica powder of commercial polypropylene material B, its QC the report display added with 20wt%.
Above-mentioned comparative example is made to 20x10x50mm testing bar by injection molding, and room temperature (25 DEG C,
Placed 24 hours under 101.325kPa), same performance test is carried out to it：
Test result see the table below：
To sum up, the list data of embodiment and comparative example is understood, compares comparative example one and embodiment five, it is known that high temperature drying can
The effect for improving heat distortion temperature and mechanical strength is played, and compares comparative example one and comparative example five, six, it is known that be light compared to commercially available
The polypropylene of matter Calcium carbonate polypropylene and mica powder class, compared to monistic inorganic filler, the present invention passes through a variety of filler groups
The synergy of conjunction, can there is preferable improvement to polyacrylic heat distortion temperature and mechanical strength.
This specific embodiment is only explanation of the invention, and it is not limitation of the present invention, people in the art
Member can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but as long as at this
All protected in the right of invention by Patent Law.
Claims (10)
1. a kind of heat-resistance polypropylene, it is characterised in that composed of the following components, the mass fraction of each component and each component is as follows：
60 ~ 70 parts of polypropylene, 10 ~ 15 parts of silicones microballoon, 15 ~ 25 parts of precipitated calcium carbonate, 15 ~ 25 parts of mica powder, 5 ~ 8 parts of compatilizer,
0.5 ~ 1.0 part of organophosphorus ester salt nucleator, 0.5 ~ 1.0 part of silane coupler, 0.1 ~ 0.5 part of antioxidant.
2. a kind of heat-resistance polypropylene according to claim 1, it is characterised in that the polypropylene includes HOPP
And COPP, its mass ratio are HOPP：COPP=3：1.
3. a kind of heat-resistance polypropylene according to claim 2, it is characterised in that the COPP includes block and is total to
Poly- polypropylene and atactic copolymerized polypropene, its mass ratio are block copolymerization polypropylene：Atactic copolymerized polypropene=4：1.
4. a kind of heat-resistance polypropylene according to claim 1, it is characterised in that the silicones microballoon is phenyl polysiloxane
Microballoon, vinyl polysiloxane microballoon, the one of which of methyl silicon resin microballoon or two kinds.
5. a kind of heat-resistance polypropylene according to claim 1, it is characterised in that the organophosphorus ester salt nucleator is elected as
Double (4- tert-butyl-phenyls) sodium phosphates, 2,2 '-methylene-bis- (4,6- di-tert-butyl-phenyl) sodium phosphate, 2,2 '-di-2-ethylhexylphosphine oxide
The one of which of (4,6- di-tert-butyl-phenyl) aluminum phosphate basic salt or two kinds.
6. a kind of heat-resistance polypropylene according to claim 1, it is characterised in that the compatilizer is that maleic anhydride grafting is poly-
Propylene or the one of which of acrylic acid-grafted polypropylene or two kinds.
7. a kind of heat-resistance polypropylene according to claim 1, it is characterised in that the silane coupler elects γ-ammonia third as
Ethyl triethoxy silicane alkane, γ-（Methacryloxypropyl）Propyl trimethoxy silicane, vinyltrimethoxy silane, N-（β-ammonia
Ethyl）The one of which of-γ-aminopropyltriethoxy dimethoxysilane or two kinds.
A kind of 8. heat-resistance polypropylene according to claim 1, it is characterised in that the antioxidant be main antioxidant 1010 and
Auxiliary antioxidant 168 is main antioxidant 1010 according to mass ratio：Auxiliary antioxidant 168=1：2 compoundings form.
9. the preparation method of a kind of heat-resistance polypropylene according to claim any one of 1-8, it is characterised in that by walking as follows
Suddenly it is made：
Step1 is by polypropylene, silicones microballoon, precipitated calcium carbonate, mica powder, compatilizer, organophosphorus ester salt nucleator, silane
Coupling agent, antioxidant stir in high mixer, obtain mixed material；
Mixed material by double screw extruder extruding pelletization, is obtained polypropylene particles, double-screw extruder screw temperature by Step2
Degree and screw speed are as follows：One 190 DEG C of area's temperature, two 195 DEG C of area's temperature, three 200 DEG C of area's temperature, four 200 DEG C of area's temperature, five
200 DEG C of area's temperature, six 200 DEG C of area's temperature, seven 195 DEG C of area's temperature, main-machine screw rotating speed 200r/min.
A kind of 10. preparation method of heat-resistance polypropylene according to claim 9, it is characterised in that polypropylene obtained by Step2
Particle dries 2h at 110 DEG C, and is cooled to room temperature under nitrogen atmosphere.
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| CN112280186A (en) * | 2020-11-11 | 2021-01-29 | 广西北海精一电力器材有限责任公司 | Protective layer cushion block for concrete pole and preparation method thereof |
| CN112280186B (en) * | 2020-11-11 | 2024-05-24 | 广西北海精一电力器材有限责任公司 | Protective layer cushion block for concrete pole and preparation method thereof |
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