CN1313529C - Polypropylene composition and process for preparing modified polypropylene pipes by using same - Google Patents
Polypropylene composition and process for preparing modified polypropylene pipes by using same Download PDFInfo
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- CN1313529C CN1313529C CNB2005100176442A CN200510017644A CN1313529C CN 1313529 C CN1313529 C CN 1313529C CN B2005100176442 A CNB2005100176442 A CN B2005100176442A CN 200510017644 A CN200510017644 A CN 200510017644A CN 1313529 C CN1313529 C CN 1313529C
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Abstract
The present invention discloses a polypropylene composition and a method for producing whisker modified reinforcing polypropylene pipes for heating supply for warmth by the composition. A mixture before granulating is composed of 50 to 100 parts of polypropylene, 10 to 50 parts of whisker, 0.5 to 5 parts of lubricating agent and 0.5 to 10 parts of coupling agent by part of weight. The mixture is evenly mixed by a high-speed mixing machine, is placed in a double screw machine after being dried, and is extruded and granulated to form combination granular materials. A certain amount of polypropylene is added to the combination granular materials again, and the ratio of the renewedly added polypropylene to the combination granular materials is 1: 0.5 to 3. The polypropylene and the combination granular materials are evenly mixed by the high-speed mixing machine again, are placed in a single screw machine, are heated to be extruded out of pipes, and are sized in vacuum, cooled and drawn to form pipes of required specification. The whisker modified reinforcing polypropylene pipes for heating supply for warmth have the properties of high rigidity, high strength, high elastic modulus, strong heat resistance, etc., are especially suitable for fields of hot-water conveying, geothermal heating supply, etc., and not only can enhance heat resisting temperature but also can extend the service life.
Description
One. technical field: the present invention relates to a kind of polypropene composition, particularly relate to the production method of a kind of whisker modified Reinforced Polypropylene composition and tubing thereof.
Two. background technology: plastics tubing since it have corrosion-resistant, the life-span long, plurality of advantages such as easy to process, in all trades and professions and family, generally use, but, under envrionment conditions with certain pressure and temperature, exist fragilely, rigidity is lower, installs, safeguards inconvenient, problems such as cost height are so polypropylene pipe arises at the historic moment.Polypropylene is as a kind of general-purpose plastics, it has characteristics such as processing characteristics is good, good mechanical property, chemical resistance, in plastics, occupy critical role, but when making engineering part, intensity, rigidity and resistance toheat can not meet the demands far away, while polypropene impact-resistant poor performance, and molding shrinkage is big, particularly aspect ratio is shunk shortcomings such as inhomogeneous during fiber reinforcement, has limited the application of polypropylene in engineering part.Magnesium salt whisker (M-HOS) is that (the whisker length-to-diameter ratio is L/D 〉=30 to a kind of novel single crystal fibre shape rigid inorganic filler, particle diameter≤1 μ m), has higher draw tensile strength, heat resisting temperature and flame retardant properties, adding in the polypropylene material can the enhancing modified polypropylene material, its enhanced mechanism is similar to fiber reinforcement, as long as polypropylene material and whisker have interface performance preferably, whisker just can well transmit stress, dispersive stress, play the effect of filling skeleton and strengthening the property, can improve intensity, improve dimensional stability, improve Young's modulus, obviously change and improve thermal distortion (heat-resisting) temperature, its reason is not only intensity of crystal whisker materials, the Young's modulus height, and resistance toheat is also far above the heat decomposition temperature of polypropylene material, dose and form whisker enhancing skeleton in the polypropylene, under heating status, crystal whisker materials can limit the polypropylene high molecular material segmental fully and wriggle significantly like this, thereby improves the heat-drawn wire of material.
Disclose a kind of matrix material of high-crystallinity polypropylene among the European patent EO-A496625, it is by dosing the purpose that 30% talcum powder reaches high rigidity, but has caused the shock strength of material to reduce like this, thereby has limited the application of material.Clear 56-149318 of Japanese Patent JP and the clear 61-256920 of Japanese Patent JP, the flat 4-36092 of JP have introduced the method for preparing magnesium salt whisker, Chinese patent CN1288860A discloses a kind of preparation method of novel magnesium salt whisker, but to its application on superpolymer, particularly the application in polypropylene does not all relate to.Chinese patent CN1532221A, application number is 03115922.2, characteristics such as denomination of invention is: disclose a kind of polypropene composition in " a kind of mineral/whisker reinforced polypropylene composition ", it is low that it has high rigidity, high strength, shock resistance and shrinking percentage, and laterally vertical shrinking percentage is even; In addition, Chinese patent CN1536012A, application number is 03116196.0, denomination of invention is: disclose a kind of flame-proof polypropelene composition in " a kind of magnesium salt whisker enhancing flame-proof polypropelene composition ", it has high rigidity, high strength, low cigarette, fire-retardant, characteristics such as dimensional stability is good, but it improving heat resisting temperature, improving the application on the Young's modulus function, is not all related to.
Three. summary of the invention:
The objective of the invention is: provide a kind of heat supply heating with whisker modified Reinforced Polypropylene composition, and have the method for the heat supply heating of high rigidity, high strength, high elastic coefficient, superpower resistance toheat with said composition production with whisker modified Reinforced Polypropylene tubing.
Technical scheme of the present invention is: a kind of heat supply heating is with whisker modified Reinforced Polypropylene composition, with the weight part is unit, by 50～100 parts of polypropylene, 10～50 parts of whiskers, 0.5～5 part of lubricant, 0.5～10 part of coupling agent is formed compound, and the compound mixing is heated forms the combination pellet after the granulation, again the polypropylene that adds certain part by weight in the combination pellet after granulation, the polypropylene of Jia Ruing is 1: 0.5～3 with the ratio of the weight part of combination pellet again.
Described heat supply heating also contains 0.1～3 part of tinting material with whisker modified Reinforced Polypropylene composition in the compound before its granulation.
Described polypropylene is a homo-polypropylene, or is Co-polypropylene, and polyacrylic melting index is 5～25g/10min, tensile strength 〉=20Mpa.
Described whisker is a magnesium salt whisker, or is silicate whisker, or is the aluminate whisker, and the whisker length-to-diameter ratio is L/D 〉=30, particle diameter≤1 μ m.
Described lubricant is to introduce polar group on ethylene bis-fatty acid amides EBS basis, be TAS-2A, or be TAS-3A, or be TAS-1A, or be TAS-4A, or be KS-101A, described coupling agent is metatitanic acid lipid coupling agent TC-4, aluminic acid lipid coupling agent JN-101, or be silane series coupling agent KH-550.
A kind of method of producing heat supply heating with whisker modified Reinforced Polypropylene tubing, its concrete steps are as follows:
A. each component raw material that takes by weighing before the granulation by proportioning is formed compound;
B. compound was mixed 2～12 minutes with high-speed mixer, temperature is controlled at 65～120 ℃ in the mixing process, and discharging was then dried 2～10 hours down at 90～120 ℃;
C. the compound after will drying places the dual-screw-stem machine extruding pelletization to form the combination pellet;
D. the polypropylene that adds certain part by weight in the combination pellet after granulation again, the polypropylene of Jia Ruing is 1: 0.5～3 with the ratio of the weight part of combination pellet again;
E. mixed 1～10 minute with high-speed mixer once more, discharging was then dried 2～10 hours down at 100～120 ℃;
F. the compound after will drying places single-screw machine, the heating extruding pipe material;
G. tubing Vacuum shaping, cooling;
H. pull out described heat supply heating with whisker modified Reinforced Polypropylene tubing.
Rotating speed when described high-speed mixer mixes is 500～3000 rev/mins.
Described granulation, its granularity requirements are particle diameter Φ 1.5～4mm, length 1～5mm, and the granulation process temperature is 180～190 ℃ of heads, 150～200 ℃ on fuselage, the twin screw rotating speed of dual-screw-stem machine is 40～100 rev/mins.
Described heating extruding pipe material, the screw slenderness ratio L/D=28 of single-screw machine～33: 1, Heating temperature is 195～205 ℃ of heads, 160～205 ℃ on fuselage, the screw speed of single-screw machine is 40～100 rev/mins, described tubing typing, and its vacuum tightness is-0.01～0.06Mpa, tubing typing refrigerative water temperature is 5～40 ℃, and described pulling speed is 0.2～8m/min.
The tubing specification of producing is Φ 20 * 2.8mm, or is Φ 25 * 3.5mm, or is Φ 32 * 4.4mm, or be Φ 40 * 5.5mm, or be Φ 50 * 6.9mm, or be Φ 63 * 8.6mm, or be Φ 75 * 10.3mm, or be Φ 90 * 12.3mm, or be Φ 110 * 15.1mm.
Positive beneficial effect of the present invention is:
1. the heat supply heating of being produced by polypropene composition of the present invention is with whisker modified Reinforced Polypropylene tubing, the heat resisting temperature of tubing can improve more than 10 ℃, compressive strength improves 0.5～1.0Mpa, be a kind of more satisfactory modification strongthener, can be used for fields such as delivering hot water, geothermal heating.Traditional plastic pipe, because use temperature is quite responsive to the influence in life-span, 10 ℃ of the every raisings of its use temperature, shorten 2.5 times work-ing life approximately, therefore, heat supply heating of the present invention not only can improve heat resisting temperature with whisker modified Reinforced Polypropylene tubing, and can increase the service life, this be other tubing can not than.
2. the heat supply heating of being produced by polypropene composition of the present invention is with whisker modified Reinforced Polypropylene tubing, adopt polypropylene as matrix resin, by adopting the whisker enhancement techniques, solved that polypropylene is low as the rigidity of engineering part raw material, problem such as intensity difference, thermotolerance are high, the shock strength of material is improved greatly, enlarged the Application Areas of polypropylene as the engineering product, solved polypropylene articles size instability simultaneously, aspect ratio is shunk uneven defective, and has improved the resistance toheat and the Young's modulus of polypropylene material.
3. the heat supply heating of being produced by polypropene composition of the present invention adopts magnesium salt whisker to strengthen skeleton with whisker modified Reinforced Polypropylene tubing, can obviously improve the heat-drawn wire of tubing.Magnesium salt whisker is a kind of novel single crystal fibre shape rigid inorganic filler, have higher draw tensile strength, heat resisting temperature and flame retardant properties, adding in the polypropylene material can the enhancing modified polypropylene material, its enhanced mechanism is similar to fiber reinforcement, as long as polypropylene material and whisker have interface performance preferably, whisker just can well transmit stress, dispersive stress, play the effect of filling skeleton and strengthening the property, like this under heating status, crystal whisker materials can limit the polypropylene high molecular material segmental fully and wriggle significantly, thereby improves the heat-drawn wire of material.
4. heat supply heating of the present invention is with the detected result such as the following table of the polypropylene pipe on whisker modified Reinforced Polypropylene tubing and the market:
| Interventions Requested | Polypropylene pipe of the present invention | PP-035-raises the son material | PP-036-Korea S star dawn |
| Heat-drawn wire (℃) | 137.5 | 126.6 | 127.6 |
| Tensile strength (Mpa) | 37.7 | 30.6 | 32.1 |
| Hydraulic pressure explosion (Mpa) | 7.75 | 7.4 | 8.1 |
| Shock strength (KJ.m -2) | 190 | 100 | 105 |
| Young's modulus (GPa) | 2.5 | 1.6 | 1.8 |
Last table is by the inspecting standard of the cold and hot water polypropylene pipe GB/T18742.2-2002 resulting detected result of testing, as can be seen from the table: heat supply heating of the present invention with whisker modified Reinforced Polypropylene tubing with respect to the tubing of selling on the market, can obviously improve heat resisting temperature (vicat temperature), improve tensile strength, carry Young's modulus, had good marketable value.
Four. embodiment:
Embodiment one: a kind of polypropene composition and produce the method for heat supply heating with whisker modified Reinforced Polypropylene tubing with said composition, with the weight part is unit, taking by weighing melting index is 10g/10min, 50 parts of the homo-polypropylene of tensile strength 〉=20Mpa, length-to-diameter ratio is L/D 〉=30,15 parts of the magnesium salt whiskers of particle diameter≤1 μ m, 1.5 parts of lubricant TAS-2A, metatitanic acid lipid coupling agent TC-42.5 part, above-mentioned each component is dropped in the high-speed mixer, be to mix 2～12 minutes under 500～3000 rev/mins the situation at rotating speed, temperature is controlled at 65～120C in the mixing process, discharging was then dried 2～10 hours under 90～120 ℃ of conditions;
Compound after the oven dry is placed dual-screw-stem machine, at rotating speed is that 40～100 rev/mins, dual-screw-stem machine head temperature are 180～190 ℃, and body temperature is that extruding pelletization forms the combination pellet under the condition about 150～200 ℃, its granularity requirements is particle diameter Φ 1.5～4mm, length 1～5mm;
In the combination pellet after granulation, add the homo-polypropylene of 69 weight parts again, make homo-polypropylene:
The ratio of the weight part of combination pellet is 1: 1; Be to mix 1～10 minute under 500～3000 rev/mins the situation at rotating speed with high-speed mixer once more, discharging was then dried 2～10 hours under 100～120 ℃ of conditions;
Compound after the oven dry is placed single-screw machine, the heating extruding pipe material, the screw slenderness ratio L/D=28 of single-screw machine～33: 1, Heating temperature is 195～205 ℃ of heads, 160～205 ℃ on fuselage, the screw speed of single-screw machine are 40～100 rev/mins;
Tubing is finalized the design under the vacuum tightness of-0.01～0.06Mpa in vacuum tightness, cooling then, the refrigerative water temperature is 5～40 ℃, its specification is Φ 20 * 2.8mm, or be Φ 25 * 3.5mm, or be Φ 32 * 4.4mm, or be Φ 40 * 5.5mm, or be Φ 50 * 6.9mm, or be Φ 63 * 8.6mm, or be Φ 75 * 10.3mm, or be Φ 90 * 12.3mm, or be Φ 110 * 15.1mm;
Pull out described heat supply heating with whisker modified Reinforced Polypropylene tubing, pulling speed is 0.2～8m/min.
Embodiment two: present embodiment is basic identical with the production method of embodiment one, something in common does not repeat, difference is: a kind of heat supply heating is with whisker modified Reinforced Polypropylene composition, with the weight part is unit, taking by weighing melting index is 25g/10min, 100 parts of the Co-polypropylene of tensile strength 〉=20Mpa, length-to-diameter ratio is L/D 〉=30,50 parts of the silicate whiskers of particle diameter≤1 μ m, 3 parts of lubricant TAS-3A, silane series coupling agent KH-5505 part, form the preceding compound of granulation, form the combination pellet after the compound granulation, again add 79 parts of Co-polypropylene, the Co-polypropylene of Jia Ruing again in the combination pellet after granulation: the combination pellet after the granulation=1: 2.
Embodiment three: present embodiment is basic identical with the production method of embodiment one, something in common does not repeat, difference is: a kind of heat supply heating is with whisker modified Reinforced Polypropylene composition, with the weight part is unit, taking by weighing melting index is 5g/10min, 80 parts of the homo-polypropylene of tensile strength 〉=20Mpa, length-to-diameter ratio is L/D 〉=30,50 parts of the aluminate whiskers of particle diameter≤1 μ m, 5 parts of lubricant TAS-1A, 7 parts of aluminic acid lipid coupling agent JN-101, form the preceding compound of granulation, form the combination pellet after the compound granulation, again add 71 parts of homo-polypropylene, the homo-polypropylene of Jia Ruing again in the combination pellet after granulation: the combination pellet after the granulation=1: 2.
Embodiment four: present embodiment is basic identical with the production method of embodiment one, something in common does not repeat, difference is: a kind of heat supply heating is with whisker modified Reinforced Polypropylene composition, with the weight part is unit, taking by weighing melting index is 20g/10min, 60 parts of the Co-polypropylene of tensile strength 〉=20Mpa, length-to-diameter ratio is L/D 〉=30,10 parts of the magnesium salt whiskers of particle diameter≤1 μ m, 0.5 part of lubricant TAS-4A, 0.5 part of metatitanic acid lipid coupling agent TC-4, form the preceding compound of granulation, form the combination pellet after the compound granulation, again add 142 parts of Co-polypropylene, the Co-polypropylene of Jia Ruing again in the combination pellet after granulation: the combination pellet after the granulation=1: 0.5.
Embodiment five: present embodiment is basic identical with the production method of embodiment one, something in common does not repeat, difference is: a kind of heat supply heating is with whisker modified Reinforced Polypropylene composition, with the weight part is unit, taking by weighing melting index is 15g/10min, 90 parts of the Co-polypropylene of tensile strength 〉=20Mpa, length-to-diameter ratio is L/D 〉=30,25 parts of the silicate whiskers of particle diameter≤1 μ m, 4 parts of lubricant KS-101A, silane series coupling agent KH-5507 part, form the preceding compound of granulation, form the combination pellet after the compound granulation, again add 42 parts of Co-polypropylene, the Co-polypropylene of Jia Ruing again in the combination pellet after granulation: the combination pellet after the granulation=1: 3.
Embodiment six: present embodiment is basic identical with the production method of embodiment one, something in common does not repeat, difference is: a kind of heat supply heating is with whisker modified Reinforced Polypropylene composition, with the weight part is unit, taking by weighing melting index is 13g/10min, 70 parts of the homo-polypropylene of tensile strength 〉=20Mpa, length-to-diameter ratio is L/D 〉=30,35 parts of the aluminate whiskers of particle diameter≤1 μ m, 3 parts of lubricant TAS-3A, 5 parts of aluminic acid lipid coupling agent JN-101, form the preceding compound of granulation, form the combination pellet after the compound granulation, again add 113 parts of homo-polypropylene, the homo-polypropylene of Jia Ruing again in the combination pellet after granulation: the combination pellet after the granulation=1: 1.
Embodiment seven: a kind of polypropene composition and produce the method for heat supply heating with whisker modified Reinforced Polypropylene tubing with said composition, with the weight part is unit, taking by weighing melting index is 10g/10min, 50 parts of the homo-polypropylene of tensile strength 〉=20Mpa, length-to-diameter ratio is L/D 〉=30,10 parts of the magnesium salt whiskers of particle diameter≤1 μ m, 0.5 part of lubricant TAS-2A, 0.5 part of metatitanic acid lipid coupling agent TC-4,1 part of tinting material, above-mentioned each component is dropped in the high-speed mixer, be to mix 2～12 minutes under 500～3000 rev/mins the situation at rotating speed, temperature is controlled at 65～120 ℃ in the mixing process, and discharging was then dried 2～10 hours under 90～120 ℃ of conditions;
Compound after the oven dry is placed dual-screw-stem machine, at rotating speed is that 40～100 rev/mins, dual-screw-stem machine head temperature are 180～190 ℃, and body temperature is that extruding pelletization forms the combination pellet under the condition about 150～200 ℃, its granularity requirements is particle diameter Φ 1.5～4mm, length 1～5mm;
In the combination pellet after granulation, add the homo-polypropylene of 70 weight parts again, make homo-polypropylene: the ratio of the weight part of combination pellet is 1: 1;
Be to mix 1～10 minute under 500～3000 rev/mins the situation at rotating speed with high-speed mixer once more, discharging was then dried 2～10 hours under 100～120 ℃ of conditions;
Compound after the oven dry is placed single-screw machine, the heating extruding pipe material, the screw slenderness ratio L/D=28 of single-screw machine～33: 1, Heating temperature is 195～205 ℃ of heads, 160～205 ℃ on fuselage, the screw speed of single-screw machine are 40～100 rev/mins;
Tubing is finalized the design under the vacuum tightness of-0.01～0.06Mpa in vacuum tightness, cooling then, the refrigerative water temperature is 5～40 ℃, its specification is Φ 20 * 2.8mm, or be Φ 25 * 3.5mm, or be Φ 32 * 4.4mm, or be Φ 40 * 5.5mm, or be Φ 50 * 6.9mm, or be Φ 63 * 8.6mm, or be Φ 75 * 10.3mm, or be Φ 90 * 12.3mm, or be Φ 110 * 15.1mm;
Pull out described heat supply heating with whisker modified Reinforced Polypropylene tubing, pulling speed is 0.2～8m/min.
Embodiment eight: present embodiment is basic identical with the production method of embodiment seven, something in common does not repeat, difference is: a kind of heat supply heating is with whisker modified Reinforced Polypropylene composition, with the weight part is unit, taking by weighing melting index is 25g/10min, 100 parts of the Co-polypropylene of tensile strength 〉=20Mpa, length-to-diameter ratio is L/D 〉=30,50 parts of the silicate whiskers of particle diameter≤1 μ m, 5 parts of lubricant KS-101A, 10 parts of silane series coupling agent KH-550,3 parts of tinting materials, form the preceding compound of granulation, form the combination pellet after the compound granulation, again add 56 parts of Co-polypropylene, the Co-polypropylene of Jia Ruing again in the combination pellet after granulation: the combination pellet after the granulation=1: 3.
Embodiment nine: present embodiment is basic identical with the production method of embodiment seven, something in common does not repeat, difference is: a kind of heat supply heating is with whisker modified Reinforced Polypropylene composition, with the weight part is unit, taking by weighing melting index is 5g/10min, 60 parts of the homo-polypropylene of tensile strength 〉=20Mpa, length-to-diameter ratio is L/D 〉=30,30 parts of the aluminate whiskers of particle diameter≤1 μ m, 3 parts of lubricant TAS-1A, 6 parts of aluminic acid lipid coupling agent JN-101,2 parts of tinting materials, form the preceding compound of granulation, form the combination pellet after the compound granulation, again add 50.5 parts of homo-polypropylene, the homo-polypropylene of Jia Ruing again in the combination pellet after granulation: the combination pellet after the granulation=1: 2.
Embodiment ten: present embodiment is basic identical with the production method of embodiment seven, something in common does not repeat, difference is: a kind of heat supply heating is with whisker modified Reinforced Polypropylene composition, with the weight part is unit, taking by weighing melting index is 22g/10min, 90 parts of the Co-polypropylene of tensile strength 〉=20Mpa, length-to-diameter ratio is L/D 〉=30,40 parts of the magnesium salt whiskers of particle diameter≤1 μ m, 4 parts of lubricant TAS-4A, 8 parts of metatitanic acid lipid coupling agent TC-4,2.5 parts of tinting materials, form the preceding compound of granulation, form the combination pellet after the compound granulation, again add 96.3 parts of Co-polypropylene, the Co-polypropylene of Jia Ruing again in the combination pellet after granulation: the combination pellet after the granulation=1: 1.5.
Embodiment 11: present embodiment is basic identical with the production method of embodiment seven, something in common does not repeat, difference is: a kind of heat supply heating is with whisker modified Reinforced Polypropylene composition, with the weight part is unit, taking by weighing melting index is 25g/10min, 55 parts of the homo-polypropylene of tensile strength 〉=20Mpa, length-to-diameter ratio is L/D 〉=30,15 parts of the silicate whiskers of particle diameter≤1 μ m, 1 part of lubricant KS-101A, 2 parts of silane series coupling agent KH-550,0.5 part of tinting material, form the preceding compound of granulation, form the combination pellet after the compound granulation, again add 147 parts of homo-polypropylene, the homo-polypropylene of Jia Ruing again in the combination pellet after granulation: the combination pellet after the granulation=1: 0.5.
Embodiment 12: present embodiment is basic identical with the production method of embodiment seven, something in common does not repeat, difference is: a kind of heat supply heating is with whisker modified Reinforced Polypropylene composition, with the weight part is unit, taking by weighing melting index is 5g/10min, 95 parts of the Co-polypropylene of tensile strength 〉=20Mpa, length-to-diameter ratio is L/D 〉=30,45 parts of the aluminate whiskers of particle diameter≤1 μ m, 4 parts of lubricant TAS-3A, 7.5 parts of aluminic acid lipid coupling agent JN-101,2.5 parts of tinting materials, form the preceding compound of granulation, form the combination pellet after the compound granulation, again add 61.6 parts of Co-polypropylene, the Co-polypropylene of Jia Ruing again in the combination pellet after granulation: the combination pellet after the granulation=1: 2.5.
Claims (7)
1. a heat supply heating is with whisker modified Reinforced Polypropylene composition, and it is characterized in that: with the weight part is unit, contains the compound of 50～100 parts of polypropylene, 10～50 parts of whiskers, 0.5～5 part of lubricant and 0.5～10 part of composition of coupling agent in the feed composition; The compound mixing heated forms the combination pellet after the granulation, adds polypropylene again in the combination pellet, and polypropylene is 1: 0.5～3 with the ratio of combination pellet,
Described whisker is a magnesium salt whisker, or is silicate whisker, or is the aluminate whisker, and the whisker length-to-diameter ratio is L/D 〉=30, particle diameter≤1 μ m; Described lubricant is TAS-2A, or is TAS-3A, or is TAS-1A, or is TAS-4A, or is KS-101A, and described coupling agent is a phthalandione lipid coupling agent, or is aluminic acid lipid coupling agent, or is silane series coupling agent.
2. heat supply heating according to claim 1 is with whisker modified Reinforced Polypropylene composition, and it is characterized in that: described polypropylene is a homo-polypropylene, or is Co-polypropylene, and polyacrylic melting index is 5～25g/10min, tensile strength 〉=20Mpa.
3. produce the method for heat supply heating with whisker modified Reinforced Polypropylene tubing with the described composition of arbitrary claim in claim 1 or 2 for one kind, its concrete steps are as follows:
A. each component raw material that takes by weighing before the granulation by proportioning is formed compound;
B. compound was mixed 2～12 minutes with high-speed mixer, temperature is controlled at 65～120 ℃ in the mixing process, and discharging was then dried 2～10 hours down at 90～120 ℃;
C. the compound after will drying places the dual-screw-stem machine extruding pelletization to form the combination pellet;
D. add polypropylene again in the combination pellet after granulation, the polypropylene of Jia Ruing is 1: 0.5～3 with the ratio of the weight part of combination pellet again;
E. mixed 1～10 minute with high-speed mixer once more, discharging was then dried 2～10 hours down at 100～120 ℃;
F. the compound after will drying places single-screw machine, the heating extruding pipe material;
G. tubing Vacuum shaping, cooling;
H. pull out described heat supply heating with whisker modified Reinforced Polypropylene tubing.
4. production heat supply heating according to claim 3 is characterized in that with the method for whisker modified Reinforced Polypropylene tubing: the rotating speed when described high-speed mixer mixes is 500～3000 rev/mins.
5. production heat supply heating according to claim 3 is with the method for whisker modified Reinforced Polypropylene tubing, it is characterized in that: described granulation, its granularity requirements is particle diameter Φ 1.5～4mm, length 1～5mm, the granulation process temperature is 180～190 ℃ of heads, 150～200 ℃ on fuselage, the twin screw rotating speed of dual-screw-stem machine is 40～100 rev/mins.
6. production heat supply heating according to claim 3 is with the method for whisker modified Reinforced Polypropylene tubing, it is characterized in that: described heating extruding pipe material, the screw slenderness ratio L/D=28 of single-screw machine～33: 1, Heating temperature is 195～205 ℃ of heads, and 160～205 ℃ on fuselage, the screw speed of single-screw machine are 40～100 rev/mins, described tubing typing, its vacuum tightness is-0.01～0.06Mpa, and tubing typing refrigerative water temperature is 5～40 ℃, and described pulling speed is 0.2～8m/min.
7. production heat supply heating according to claim 3 is with the method for whisker modified Reinforced Polypropylene tubing, it is characterized in that: the tubing specification of producing is Φ 20 * 2.8mm, or be Φ 25 * 3.5mm, or be Φ 32 * 4.4mm, or be Φ 40 * 5.5mm, or be Φ 50 * 6.9mm, or be Φ 63 * 8.6mm, or be Φ 75 * 10.3mm, or be Φ 90 * 12.3mm, or be Φ 110 * 15.1mm.
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|---|---|---|---|---|
| CN101638500B (en) * | 2008-07-31 | 2011-05-25 | 中国石油天然气股份有限公司 | Composite auxiliary agent for random copolymerized polypropylene pipe material |
| CN102061031A (en) * | 2009-11-12 | 2011-05-18 | 昆山誉球模塑有限公司 | Automotive trim made from whisker composite material and manufacturing method thereof |
| CN109181116A (en) * | 2018-08-19 | 2019-01-11 | 福建师范大学泉港石化研究院 | A kind of preparation method of high abrasion scratch resistance polypropylene pipe |
| CN114573916B (en) * | 2022-03-11 | 2023-06-02 | 广东新亚光电缆股份有限公司 | Preparation method of high-strength pipe |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1532221A (en) * | 2003-03-21 | 2004-09-29 | 上海日之升新技术发展有限公司 | Mineral/ whisker reinforced polypropylene composition |
| CN1536012A (en) * | 2003-04-07 | 2004-10-13 | 上海日之升新技术发展有限公司 | Magnesium solt whisker rein forced fire-resisting polypropylene composition |
| CN1175038C (en) * | 2001-07-03 | 2004-11-10 | 成都市华硕实业有限公司 | Composite of microfibre, superfine powder and polypropylene |
-
2005
- 2005-05-31 CN CNB2005100176442A patent/CN1313529C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1175038C (en) * | 2001-07-03 | 2004-11-10 | 成都市华硕实业有限公司 | Composite of microfibre, superfine powder and polypropylene |
| CN1532221A (en) * | 2003-03-21 | 2004-09-29 | 上海日之升新技术发展有限公司 | Mineral/ whisker reinforced polypropylene composition |
| CN1536012A (en) * | 2003-04-07 | 2004-10-13 | 上海日之升新技术发展有限公司 | Magnesium solt whisker rein forced fire-resisting polypropylene composition |
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| CN1702109A (en) | 2005-11-30 |
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