CN106432908A - Transparent flame-retardant polypropylene and preparation method thereof - Google Patents
Transparent flame-retardant polypropylene and preparation method thereof Download PDFInfo
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- CN106432908A CN106432908A CN201610853571.9A CN201610853571A CN106432908A CN 106432908 A CN106432908 A CN 106432908A CN 201610853571 A CN201610853571 A CN 201610853571A CN 106432908 A CN106432908 A CN 106432908A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/24—Crystallisation aids
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Abstract
The invention discloses transparent flame-retardant polypropylene which contains the following raw materials in percentage by weight: 0-3% of a flame retardant, 0-0.4% of a nucleating agent, 0.-0.6% of an antioxidant, 0.4-1.2% of a lubricant and the balance of polypropylene. The transparent flame-retardant polypropylene disclosed by the invention is good in flame retardancy and high in transparency grade, and due to addition of the nucleating agent, the transparency, the surface gloss, the tensile strength, the rigidity, the thermal deformation temperature, the impact resistance and the creep resistance of a polypropylene raw material can be greatly improved. The invention further discloses a preparation method of the transparent flame-retardant polypropylene. The transparent flame-retardant polypropylene is easy in adopted raw material obtaining, simple to operate and low in production cost. Due to addition of the nucleating agent, the production cycle is effectively shortened, the production efficiency is greatly improved, and the transparent flame-retardant polypropylene disclosed by the invention can be applied to the fields such as domestic capacitors and transparent packaging, has wide market prospects, and is worthy of popularization.
Description
Technical field
The present invention relates to fine chemistry industry field of material technology, more particularly, to a kind of transparent flame-retarding polypropylene and its preparation side
Method.
Background technology
Polypropylene (PP) is a kind of hemicrystalline thermoplastic.There is good mechanical property, resistance to chemical attack and resistance to
Hot property, is one of most commonly used general-purpose plastics of consumption, the household electrical appliances that are widely used, automobile, weaving, OA office, furniture bathroom,
The industries such as packaging for foodstuff.But PP chemical constitution determines that it easily burns, oxygen index (OI) is 17.4～18.5, belongs to combustible material, easily
Propagating flame, application is restricted in many fields to make PP.With scientific and technological progress, the people increasingly pay close attention to the guarantor of lives and properties
Shield is so that the material in traditional field needs to improve its feature.Based on the problems referred to above, the present invention proposes a kind of transparent flame-retarding
Polypropylene and preparation method thereof.
Content of the invention
The invention aims to shortcoming present in solution prior art, and a kind of transparent flame-retarding polypropylene proposing
And preparation method thereof.
A kind of transparent flame-retarding polypropylene, including the raw material of following percentage by weight：Fire retardant 0～3%, nucleator 0～
0.4%th, antioxidant 0～0.6%, lubricant 0.4～1.2%, balance of polypropylene.
Preferably, described a kind of transparent flame-retarding polypropylene, including the raw material of following percentage by weight：Fire retardant 1～2%,
Nucleator 0.1～0.3%, antioxidant 0.2～0.4%, lubricant 0.6～1%, balance of polypropylene.
Preferably, described a kind of transparent flame-retarding polypropylene, including the raw material of following percentage by weight：Fire retardant 2%, one-tenth
Core agent 0.2%, antioxidant 0.4%, lubricant 0.8%, balance of polypropylene.
Preferably, described polypropylene be one of molecular weight extrusion grade PP-H and PP-R between 40～1,000,000 or
Two kinds of blends of person.
Preferably, described fire retardant be containing Br, P, N element bromo- phosphorus-nitrogen response type polymer flame retardant, specially bromine
Tetramethylolmethane phosphonic acid ester fire retardant.
Preferably, described nucleator is diphenyl methylene glucitols polymer, specially two pairs methyl benzylidene sorbitols
With one of double (3,4- dimethylbenzylidene) Sorbitol or two kinds of blends.
Preferably, particle diameter >=325 mesh of described nucleator.
Preferably, described lubricant is the blend of white mineral oil and ethylene bis stearamide.
The invention allows for a kind of polyacrylic preparation method of transparent flame-retarding, comprise the following steps：
S1, the polypropylene of described percentage by weight and lubricant are put in blender, with the rotating speed of 380～550r/min, soon
Speed stirring 3～5min, obtains one-level blend A；
S2, the fire retardant of described percentage by weight, antioxidant and nucleator are added to gained in step S1 one-level blending
In thing A, carry out two grades of blending and stirring, mixing time is 2～4min, mixing speed is 500～800r/min, obtains two grades of blends
B；
S3, by feeding equipment, two grades of blend B in step S2 are added in double screw extruder and are plastified, shearing,
Melting forms homogeneous melt, and extrusion temperature is 170～210 DEG C, and the vacuum of evacuation is -0.1～-0.04MPa；
S4, the homogeneous melt of gained in step S3 is carried out tie rod by extrusion neck ring mold, by material strip pass sequentially through water temperature be 30～
50 DEG C of tank immersion cooling, device water dumping of fetching water, hair-dryer dry up, pelleter pelletizing, obtain the particulate that particle diameter is 1.5～4mm；
S5, the particulate in step S4 is transported to homogenizing bucket homogenizing, is then measured, packaging and storage.
A kind of transparent flame-retarding polypropylene proposed by the present invention, has good fire resistance and the high grade of transparency, with tool itself
There are the usability of resistance to long term high temperature, light specific gravity, not hygroscopic polypropylene is raw material, former by adding nucleator to improve polypropylene
The transparency of material, lustrous surface, tensile strength, rigidity, heat distortion temperature, impact resistance, creep resistance, the addition of fire retardant is big
Improve greatly the fire resistance of polypropylene material, the invention allows for a kind of polyacrylic preparation method of transparent flame-retarding, pass through
The raw materials used co-blended that carries out is melt extruded, cools down, pelletize, be easy to get using raw material, simple to operate, low production cost, nucleation
The addition of agent effectively shortens the production cycle, substantially increases production efficiency, the transparent flame-retarding polypropylene that the present invention prepares
Capacitor of being in can be met, use under the field such as transparent wrapper, there is broad mass market prospect, be worthy to be popularized.
Specific embodiment
With reference to specific embodiment, the present invention is explained further.
Embodiment one
A kind of transparent flame-retarding polypropylene proposed by the present invention, including the raw material of following percentage by weight：Bromine tetramethylolmethane phosphonate ester
Based flame retardant 0.8%, the blend 0.8% of antioxidant 0.4%, white mineral oil and ethylene bis stearamide, balance of molecular weight are 80
Extrusion grade PP-H between ten thousand.
Its preparation method, comprises the following steps：
S1, by extrusion grade PP-H between 800,000 for the molecular weight of described percentage by weight and white mineral oil and ethylene bis stearamide
Blend put in blender, with the rotating speed of 400r/min, quickly stir 4.5min, obtain one-level blend A；
S2, the bromine tetramethylolmethane phosphonic acid ester fire retardant of described percentage by weight and antioxidant are added to gained in step S1
One-level blend A in, carry out two grades of blending and stirring, mixing time be 4min, mixing speed be 600r/min, obtain two grades of blendings
Thing B；
S3, by feeding equipment, two grades of blend B in step S2 are added in double screw extruder and are plastified, shearing,
Melting forms homogeneous melt, and extrusion temperature is 200 DEG C, and the vacuum of evacuation is -0.04MPa；
S4, the homogeneous melt of gained in step S3 is carried out tie rod by extrusion neck ring mold, material strip is passed sequentially through water temperature and is 35 DEG C
Tank immersion cooling, device water dumping of fetching water, hair-dryer dry up, pelleter pelletizing, obtain the particulate for 2mm for the particle diameter；
S5, the particulate in step S4 is transported to homogenizing bucket homogenizing, is then measured, packaging and storage.
Embodiment two
A kind of transparent flame-retarding polypropylene proposed by the present invention, including the raw material of following percentage by weight：Bromine tetramethylolmethane phosphonate ester
The double Hard Fat of based flame retardant 1.2%, double (3,4- dimethylbenzylidene) Sorbitol 0.2%, antioxidant 0.4%, white mineral oil and ethylene
The blend 0.8% of amide, the balance of molecular weight extrusion grade PP-R between 500,000.
Its preparation method, comprises the following steps：
S1, by extrusion grade PP-R between 500,000 for the molecular weight of described percentage by weight and white mineral oil and ethylene bis stearamide
Blend put in blender, with the rotating speed of 450r/min, quickly stir 4min, obtain one-level blend A；
S2, will be double to the bromine tetramethylolmethane phosphonic acid ester fire retardant of described percentage by weight, antioxidant and particle diameter >=325 purpose
(3,4- dimethylbenzylidene) Sorbitol is added in the one-level blend A of gained in step S1, carries out two grades of blending and stirring,
Mixing time is 2min, and mixing speed is 700r/min, obtains two grades of blend B；
S3, by feeding equipment, two grades of blend B in step S2 are added in double screw extruder and are plastified, shearing,
Melting forms homogeneous melt, and extrusion temperature is 180 DEG C, and the vacuum of evacuation is -0.06MPa；
S4, the homogeneous melt of gained in step S3 is carried out tie rod by extrusion neck ring mold, material strip is passed sequentially through water temperature and is 50 DEG C
Tank immersion cooling, device water dumping of fetching water, hair-dryer dry up, pelleter pelletizing, obtain the particulate for 2.5mm for the particle diameter；
S5, the particulate in step S4 is transported to homogenizing bucket homogenizing, is then measured, packaging and storage.
Embodiment three
A kind of transparent flame-retarding polypropylene proposed by the present invention, including the raw material of following percentage by weight：Bromine tetramethylolmethane phosphonate ester
The blend 0.2% of 0.8%, two pairs of methyl benzylidene sorbitols of based flame retardant and double (3,4- dimethylbenzylidene) Sorbitol, anti-
The blend 0.8% of oxidant 0.4%, white mineral oil and ethylene bis stearamide, extrusion grade between 1,000,000 for the balance of molecular weight
The blend of PP-H and PP-R.
Its preparation method, comprises the following steps：
S1, by the molecular weight of described percentage by weight the blend of extrusion grade PP-H and PP-R between 1,000,000 and white mineral oil
Put in blender with the blend of ethylene bis stearamide, with the rotating speed of 380r/min, quickly stir 3.5min, obtain one-level altogether
Mixed thing A；
S2, will be right to the bromine tetramethylolmethane phosphonic acid ester fire retardant of described percentage by weight, antioxidant and particle diameter >=325 purpose two
The blend of methyl benzylidene sorbitol and double (3,4- dimethylbenzylidene) Sorbitol is added to the one-level of gained in step S1
In blend A, carry out two grades of blending and stirring, mixing time is 3.5min, mixing speed is 550r/min, obtains two grades of blend B；
S3, by feeding equipment, two grades of blend B in step S2 are added in double screw extruder and are plastified, shearing,
Melting forms homogeneous melt, and extrusion temperature is 170 DEG C, and the vacuum of evacuation is -0.1MPa；
S4, the homogeneous melt of gained in step S3 is carried out tie rod by extrusion neck ring mold, material strip is passed sequentially through water temperature and is 30 DEG C
Tank immersion cooling, device water dumping of fetching water, hair-dryer dry up, pelleter pelletizing, obtain the particulate for 2.5mm for the particle diameter；
S5, the particulate in step S4 is transported to homogenizing bucket homogenizing, is then measured, packaging and storage.
Example IV
A kind of transparent flame-retarding polypropylene proposed by the present invention, including the raw material of following percentage by weight：Bromine tetramethylolmethane phosphonate ester
Based flame retardant 1.5%, the blend 0.8% of antioxidant 0.4%, white mineral oil and ethylene bis stearamide, balance of molecular weight are 40
Extrusion grade PP-H between ten thousand.
Its preparation method, comprises the following steps：
S1, by extrusion grade PP-H between 400,000 for the molecular weight of described percentage by weight and white mineral oil and ethylene bis stearamide
Blend put in blender, with the rotating speed of 550r/min, quickly stir 3min, obtain one-level blend A；
S2, the bromine tetramethylolmethane phosphonic acid ester fire retardant of described percentage by weight and antioxidant are added to gained in step S1
One-level blend A in, carry out two grades of blending and stirring, mixing time be 3min, mixing speed be 650r/min, obtain two grades of blendings
Thing B；
S3, by feeding equipment, two grades of blend B in step S2 are added in double screw extruder and are plastified, shearing,
Melting forms homogeneous melt, and extrusion temperature is 210 DEG C, and the vacuum of evacuation is -0.08MPa；
S4, the homogeneous melt of gained in step S3 is carried out tie rod by extrusion neck ring mold, material strip is passed sequentially through water temperature and is 45 DEG C
Tank immersion cooling, device water dumping of fetching water, hair-dryer dry up, pelleter pelletizing, obtain the particulate for 3mm for the particle diameter；
S5, the particulate in step S4 is transported to homogenizing bucket homogenizing, is then measured, packaging and storage.
Embodiment five
A kind of transparent flame-retarding polypropylene proposed by the present invention, including the raw material of following percentage by weight：Bromine tetramethylolmethane phosphonate ester
Based flame retardant 1.5%, two pairs of methyl benzylidene sorbitols 0.2%, the blendings of antioxidant 0.4%, white mineral oil and ethylene bis stearamide
Thing 0.8%, the balance of molecular weight extrusion grade PP-R between 600,000.
Its preparation method, comprises the following steps：
S1, by extrusion grade PP-R between 600,000 for the molecular weight of described percentage by weight and white mineral oil and ethylene bis stearamide
Blend put in blender, with the rotating speed of 500r/min, quickly stir 5min, obtain one-level blend A；
S2, will be right to the bromine tetramethylolmethane phosphonic acid ester fire retardant of described percentage by weight, antioxidant and particle diameter >=325 purpose two
Methyl benzylidene sorbitol is added in the one-level blend A of gained in step S1, carries out two grades of blending and stirring, and mixing time is
2.5min, mixing speed is 750r/min, obtains two grades of blend B；
S3, by feeding equipment, two grades of blend B in step S2 are added in double screw extruder and are plastified, shearing,
Melting forms homogeneous melt, and extrusion temperature is 190 DEG C, and the vacuum of evacuation is -0.05MPa；
S4, the homogeneous melt of gained in step S3 is carried out tie rod by extrusion neck ring mold, material strip is passed sequentially through water temperature and is 40 DEG C
Tank immersion cooling, device water dumping of fetching water, hair-dryer dry up, pelleter pelletizing, obtain the particulate for 2.5mm for the particle diameter；
S5, the particulate in step S4 is transported to homogenizing bucket homogenizing, is then measured, packaging and storage.
The polyacrylic transparency of transparent flame-retarding that prepare above-mentioned five groups of embodiments and fire resistance are analyzed comparing,
Draw following result：
Remarks：Anti-flammability is pressed UL-94 standard and is judged
A kind of transparent flame-retarding polypropylene proposed by the present invention, is had good fire resistance and the high grade of transparency, is had with itself resistance to
Long term high temperature usability, light specific gravity, not hygroscopic polypropylene is raw material, improves pp material by adding nucleator
The transparency, lustrous surface, tensile strength, rigidity, heat distortion temperature, impact resistance, creep resistance, the addition of fire retardant carries significantly
The high fire resistance of polypropylene material, the invention allows for a kind of polyacrylic preparation method of transparent flame-retarding, by by institute
Carry out co-blended with raw material to melt extrude, cool down, pelletize, be easy to get using raw material, simple to operate, low production cost, nucleator
Add and effectively shorten the production cycle, substantially increase production efficiency, the transparent flame-retarding polypropylene that the present invention prepares can be full
Foot is in capacitor, uses, have broad mass market prospect, be worthy to be popularized under the field such as transparent wrapper.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept equivalent or change in addition, all should be included within the scope of the present invention.
Claims (9)
1. a kind of transparent flame-retarding polypropylene is it is characterised in that include the raw material of following percentage by weight：Fire retardant 0～3%, nucleation
Agent 0～0.4%, antioxidant 0～0.6%, lubricant 0.4～1.2%, balance of polypropylene.
2. a kind of transparent flame-retarding polypropylene according to claim 1 is it is characterised in that include the former of following percentage by weight
Material：Fire retardant 1～2%, nucleator 0.1～0.3%, antioxidant 0.2～0.4%, lubricant 0.6～1%, balance of polypropylene.
3. a kind of transparent flame-retarding polypropylene according to claim 1 is it is characterised in that include the former of following percentage by weight
Material：Fire retardant 2%, nucleator 0.2%, antioxidant 0.4%, lubricant 0.8%, balance of polypropylene.
4. a kind of transparent flame-retarding polypropylene according to claim 1 is it is characterised in that described polypropylene is molecular weight 40
One of extrusion grade PP-H and PP-R between～100 ten thousand or two kinds of blends.
5. a kind of transparent flame-retarding polypropylene according to claim 1 is it is characterised in that described fire retardant is containing Br, P, N unit
Bromo- phosphorus-nitrogen response type the polymer flame retardant of element, specially bromine tetramethylolmethane phosphonic acid ester fire retardant.
6. a kind of transparent flame-retarding polypropylene according to claim 1 is it is characterised in that described nucleator is diphenyl methylene
Glucitols polymer, one of specially two pairs methyl benzylidene sorbitols and double (3,4- dimethylbenzylidene) Sorbitol
Or two kinds of blends.
7. a kind of transparent flame-retarding polypropylene according to claim 1 is it is characterised in that particle diameter >=325 of described nucleator
Mesh.
8. a kind of transparent flame-retarding polypropylene according to claim 1 is it is characterised in that described lubricant is white mineral oil and second
The blend of support bis-stearamides.
9. a kind of polyacrylic preparation method of transparent flame-retarding is it is characterised in that comprise the following steps：
S1, the polypropylene of described percentage by weight and lubricant are put in blender, with the rotating speed of 380～550r/min, soon
Speed stirring 3～5min, obtains one-level blend A；
S2, the fire retardant of described percentage by weight, antioxidant and nucleator are added to gained in step S1 one-level blending
In thing A, carry out two grades of blending and stirring, mixing time is 2～4min, mixing speed is 500～800r/min, obtains two grades of blends
B；
S3, by feeding equipment, two grades of blend B in step S2 are added in double screw extruder and are plastified, shearing,
Melting forms homogeneous melt, and extrusion temperature is 170～210 DEG C, and the vacuum of evacuation is -0.1～-0.04MPa；
S4, the homogeneous melt of gained in step S3 is carried out tie rod by extrusion neck ring mold, by material strip pass sequentially through water temperature be 30～
50 DEG C of tank immersion cooling, device water dumping of fetching water, hair-dryer dry up, pelleter pelletizing, obtain the particulate that particle diameter is 1.5～4mm；
S5, the particulate in step S4 is transported to homogenizing bucket homogenizing, is then measured, packaging and storage.
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| CN107236186A (en) * | 2017-06-14 | 2017-10-10 | 广东圆融新材料有限公司 | A kind of low-density stiffened transparent flame-retarding polypropylene material and preparation method thereof |
| CN109532170A (en) * | 2018-10-27 | 2019-03-29 | 烟台世昊塑业有限公司 | A kind of intensity height and easily peelable polypropylene release film |
| CN110240750A (en) * | 2019-05-31 | 2019-09-17 | 上海日之升科技有限公司 | High gloss polypropylene material with near-infrared transmitting and preparation method thereof |
| CN111662504A (en) * | 2020-06-04 | 2020-09-15 | 江苏鼎良电气科技有限公司 | High-tension PP belt and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107236186A (en) * | 2017-06-14 | 2017-10-10 | 广东圆融新材料有限公司 | A kind of low-density stiffened transparent flame-retarding polypropylene material and preparation method thereof |
| CN109532170A (en) * | 2018-10-27 | 2019-03-29 | 烟台世昊塑业有限公司 | A kind of intensity height and easily peelable polypropylene release film |
| CN110240750A (en) * | 2019-05-31 | 2019-09-17 | 上海日之升科技有限公司 | High gloss polypropylene material with near-infrared transmitting and preparation method thereof |
| CN110240750B (en) * | 2019-05-31 | 2022-01-14 | 上海日之升科技有限公司 | High-gloss polypropylene material with near-infrared transmittance and preparation method thereof |
| CN111662504A (en) * | 2020-06-04 | 2020-09-15 | 江苏鼎良电气科技有限公司 | High-tension PP belt and preparation method thereof |
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