CN108329642A - A kind of low-crystallinity polypropene composition and preparation method thereof - Google Patents
A kind of low-crystallinity polypropene composition and preparation method thereof Download PDFInfo
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- CN108329642A CN108329642A CN201710045938.9A CN201710045938A CN108329642A CN 108329642 A CN108329642 A CN 108329642A CN 201710045938 A CN201710045938 A CN 201710045938A CN 108329642 A CN108329642 A CN 108329642A
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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
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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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
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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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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of low-crystallinity polypropene compositions and preparation method thereof, including the component of following parts by weight is made：60 78 parts of copolymer polypropylene, 12 22 parts of metallocene PE, 10 18 parts of polybutene, 0.1 1 parts of antioxidant are made through mixing, extruding pelletization.Low crystalline polypropylene disclosed by the invention, it is modified using metallocene PE and polybutene, composition obtained has lower crystallinity low, it can reach 14 25%, there is extraordinary impact flexibility simultaneously, in addition polypropene composition preparation process disclosed by the invention is simple, easy to operate, raw material cost is low, can widen polyacrylic application field and range.
Description
Technical field
The present invention relates to modified material technical fields, and in particular to a kind of low-crystallinity polypropene composition and its preparation side
Method.
Background technology
Polypropylene has that good mechanical property, nontoxic, relative density is low, heat-resisting, chemicals-resistant, easily processed into type etc. excellent
Point, and it is cheap.It can assign the resin physical mechanical property outstanding, and thus replace certain works by processing modified
Engineering plastics have made great progress in terms of general-purpose plastics engineering in recent years, are growth rate in five big general synthetic resins
Most fast, the most active kind of new varieties.
Although polypropylene and polypropylene alloy material have a wide range of applications in numerous areas, crystallinity is about
55%-75%, poor dimensional stability is modified often to there is also the problems such as size fluctuation is big, deformation is serious, shrink mark, to
Limit its application field.
Patent No. CN102329453A discloses a kind of PP composite material of low-crystallinity, uses modified addition
Agent and a large amount of filler reduce crystallinity, but product density is larger, and product obtained is heavier, affects product lightweight.
Invention content
The object of the present invention is to provide a kind of low-crystallinity polypropene compositions and preparation method thereof.
Technical scheme is as follows：
A kind of low-crystallinity polypropene composition is prepared by weight by following components：
Further scheme, the copolymer polypropylene are block copolymerization polypropylene.
Shrinking percentage≤1.2% of the block copolymerization polypropylene in vertical direction.
The melt flow rate (MFR) of the metallocene PE is 2.5-3.5g/10min under the conditions of 190 DEG C/2.16kg, ties
Brilliant temperature is 107-116 DEG C, melting temperature is 118-129 DEG C.
The polybutene be chevron or butylene in the alpha olefin copolymer of 2~8 carbon atoms in addition to butylene
One or two kinds of mixing；The polybutene melt flow rate under 190 DEG C, the test condition of load 2.16kg for 0.01~
50g/10min。
The antioxidant is four [β-(3,5- di-t-butyl 4- hydroxy phenyls) propionic acid] pentaerythritol esters (1010), β-
(3,5- di-tert-butyl-hydroxy phenyl) propionic acid n-octadecyl alcohol ester (1076), three-(2,4- di-tert-butyl-phenyl) phosphite esters
(168), at least one of double octadecyls (DSTDP) of thio-2 acid.
Another goal of the invention of the invention is to provide a kind of preparation method of above-mentioned low-crystallinity polypropene composition, will be total to
Poly- polypropylene 60-78 parts, 12-22 parts of metallocene PE, 10-18 parts of polybutene, 0.1-1 parts of addition high mixers progress of antioxidant
Mix 5-15min；Then uniformly mixed material is added twin-screw extrude through being kneaded, squeezing out, it is poly- obtains low-crystallinity
Propylene compositions；The extrusion temperature that section is wherein respectively squeezed out in double screw extruder is 150-170 DEG C respectively, 170-185 DEG C,
175-185℃、175-185℃、175-185℃、180-190℃、180-195℃、180-195℃、180-195℃、185-200
℃。
Low-crystallinity polypropene composition prepared by the present invention, by using block copolymerization polypropylene, metallocene PE
And polybutene, obtain a kind of low-crystallinity polypropylene base.Polypropylene and polyethylene are all high crystalline plastics, and polybutene is
Crystalline plastics afterwards, crystallinity is all higher when exclusive use, all relatively large so as to cause shrinking percentage, but is being used in mixed way phase
Respective crystallization can be all destroyed to some extent between mutually, and whole crystallinity is made to decline.
The material of the present invention has following advantage：
(1) present invention uses the block polypropylene of shrinking percentage≤1.2% for basic resin, is the lower knot of successive modified material
Brilliant degree provides guarantee；And add metallocene PE, polybutene simultaneously etc., through double screw extruder extruding pelletization, had
There is the modified poly propylene composition of low-crystallinity.
(2) composition prepared by the present invention effectively reduces its crystallinity while retaining polypropylene advantage performance, reachable
To 14-25%, the application field of polypropylene material has been widened.
(3) composition good stability of the dimension (can be suitable with ABS and PC) of the present invention can be widely applied to receiving
The directly injection molding production of the more demanding high-grade component of shrinkage and the base resin for being modified once again.
(4) shrinking percentage of composition prepared by the present invention can reach conventional PP materials addition (mass ratio) 25% talcum powder
Shrinking percentage, therefore drastically reduce the dosage of inorganic particle, while good control composition and its shrink of product rate,
Its density is effectively reduced, the weight to reduce product under same volume provides effective means.
Specific implementation mode
Embodiment 1
Raw material is weighed by component in table 1 and proportioning (parts by weight)
Each raw material is uniformly mixed in high-speed mixer and mixing 5min, mixed blend is squeezed by double screw extruder
Go out to be granulated to obtain composition, each area's temperature of extruder be followed successively by from feeding section to head temperature 150 DEG C, 170 DEG C, 175 DEG C, 175
DEG C, 175 DEG C, 180 DEG C, 180 DEG C, 180 DEG C, 180 DEG C, 185 DEG C, extrusion screw rod draw ratio be 40, extrusion screw rod rotating speed be 350
Rev/min.The mixture being prepared is tested for the property, test result is shown in Table 2.
Embodiment 2
Raw material is weighed by component in table 1 and proportioning (parts by weight)
Each raw material is uniformly mixed in high-speed mixer and mixing 10min, mixed blend is passed through into double screw extruder
Extruding pelletization obtains composition, each area's temperature of extruder be followed successively by from feeding section to head temperature 170 DEG C, 185 DEG C, 185 DEG C,
185 DEG C, 185 DEG C, 190 DEG C, 195 DEG C, 195 DEG C, 195 DEG C, 200 DEG C, extrusion screw rod draw ratio is 36, and extrusion screw rod rotating speed is
350 revs/min.The mixture being prepared is tested for the property, test result is shown in Table 2.
Embodiment 3
Raw material is weighed by component in table 1 and proportioning (parts by weight)
Each raw material is uniformly mixed in high-speed mixer and mixing 15min, mixed blend is passed through into double screw extruder
Extruding pelletization obtains composition, each area's temperature of extruder be followed successively by from feeding section to head temperature 150 DEG C, 170 DEG C, 175 DEG C,
175 DEG C, 175 DEG C, 180 DEG C, 180 DEG C, 180 DEG C, 180 DEG C, 195 DEG C, extrusion screw rod draw ratio is 40, and extrusion screw rod rotating speed is
350 revs/min.The mixture being prepared is tested for the property, test result is shown in Table 2.
Embodiment 4
Raw material is weighed by component in table 1 and proportioning (parts by weight)
Each raw material is uniformly mixed in high-speed mixer and mixing 15min, mixed blend is passed through into double screw extruder
Extruding pelletization obtains composition, each area's temperature of wherein extruder be followed successively by from feeding section to head temperature 160 DEG C, 175 DEG C, 175
DEG C, 180 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 190 DEG C, 195 DEG C, extrusion screw rod draw ratio be 44, extrusion screw rod rotating speed
It is 300 revs/min.The mixture being prepared is tested for the property, test result is shown in Table 2.
Embodiment 5
Raw material is weighed by component in table 1 and proportioning (parts by weight)
Each raw material is uniformly mixed in high-speed mixer and mixing 15min, mixed blend is passed through into double screw extruder
Extruding pelletization obtains composition, each area's temperature of extruder be followed successively by from feeding section to head temperature 160 DEG C, 175 DEG C, 180 DEG C,
180 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 190 DEG C, extrusion screw rod draw ratio is 36, and extrusion screw rod rotating speed is
400 revs/min.The mixture being prepared is tested for the property, test result is shown in Table 2.
Embodiment 6
Raw material is weighed by component in table 1 and proportioning (parts by weight)
Each raw material is uniformly mixed in high-speed mixer and mixing 15min, mixed blend is passed through into double screw extruder
Extruding pelletization obtains composition, each area's temperature of extruder be followed successively by from feeding section to head temperature 160 DEG C, 170 DEG C, 175 DEG C,
175 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 190 DEG C, extrusion screw rod draw ratio is 40, and extrusion screw rod rotating speed is
400 revs/min.The mixture being prepared is tested for the property, test result is shown in Table 2.
Table 1
Table 2
Comparative example 1
It, will by 75 parts of copolymer polypropylene, 25 parts of high density polyethylene (HDPE), 0.1-1 parts of antioxidant in high-speed mixer and mixing 5min
Mixed blend by double screw extruder extruding pelletization, each area's temperature of extruder from feeding section to head temperature successively
It is 150 DEG C, 170 DEG C, 175 DEG C, 175 DEG C, 175 DEG C, 180 DEG C, 180 DEG C, 180 DEG C, 180 DEG C, 185 DEG C, extrusion screw rod draw ratio
It is 40, extrusion screw rod rotating speed is 350 revs/min.The mixture being prepared is tested for the property, test result is shown in Table 3.
Comparative example 2
By 64 parts of homopolypropylene, 22 parts of high density polyethylene (HDPE), 14 parts of toughener, 0.1-1 parts of antioxidant in high mixer
Mix 10min, by mixed blend by double screw extruder extruding pelletization, each area's temperature of extruder from feeding section to
Head temperature is followed successively by 170 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 185 DEG C, 190 DEG C, 195 DEG C, 195 DEG C, 195 DEG C, 200 DEG C, squeezes
It is 36 to go out screw slenderness ratio, and extrusion screw rod rotating speed is 350 revs/min.The mixture being prepared is tested for the property, is tested
It the results are shown in Table 3.
Comparative example 3
By 75 parts of homopolypropylene, 25 parts of talcum powder, 0.1-1 parts of antioxidant in high-speed mixer and mixing 5min, after mixing
Blend by double screw extruder extruding pelletization, each area's temperature of extruder is followed successively by 150 from feeding section to head temperature
DEG C, 170 DEG C, 175 DEG C, 175 DEG C, 175 DEG C, 180 DEG C, 180 DEG C, 180 DEG C, 180 DEG C, 185 DEG C, extrusion screw rod draw ratio be 40,
Extrusion screw rod rotating speed is 350 revs/min.The mixture being prepared is tested for the property, test result is shown in Table 3.
Table 3
| Test event/unit | Testing standard | Embodiment 1 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Melt finger/g/10min | ISO 1133 | 19.8 | 18.2 | 21.6 | 22.4 |
| Tensile strength/Mpa | ISO 527 | 18.7 | 28.5 | 28.8 | 18.7 |
| Bending strength/Mpa | ISO 178 | 25.6 | 25.3 | 29.5 | 35.5 |
| Bending modulus/Mpa | ISO 178 | 822 | 1320 | 1105 | 1805 |
| Izod notch impact strengths/KJ/ ㎡ | ISO 180 | NB | 10.2 | 7.8 | 3.2 |
| Density/g/cm3 | ISO 1183 | 0.901 | 0.905 | 0.905 | 1.082 |
| Heat distortion temperature/DEG C | ISO 75-1 | 87 | 85 | 106 | 105 |
| Crystallinity/% | - | 14.4 | 45.3 | 38.5 | 30.1 |
It can be seen that in the present invention by table 2,3 data of table due to using the block polypropylene of shrinking percentage≤1.2% for base
Plinth resin, and metallocene PE and polybutene are added simultaneously, so that composition obtained is had lower crystallinity, implements simultaneously
Example 1-6 density is all well below the density of comparative example 3.
This hair can be understood and applied the above description of the embodiments is intended to facilitate those skilled in the art
It is bright.Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein
General Principle is applied in other embodiment without having to go through creative labor.Therefore, the present invention is not limited to implementations here
Example, those skilled in the art's announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be
Within protection scope of the present invention.
Claims (7)
1. a kind of low-crystallinity polypropene composition, it is characterised in that：It is prepared by weight by following components：
60-78 parts of copolymer polypropylene,
12-22 parts of metallocene PE,
10-18 parts of polybutene,
0.1-1 parts of antioxidant.
2. according to a kind of low-crystallinity polypropene composition described in claim 1, it is characterised in that：The copolymer polypropylene
For block copolymerization polypropylene.
3. according to a kind of low-crystallinity polypropene composition described in claim 2, it is characterised in that：The block copolymerization is poly-
Shrinking percentage≤1.2% of propylene in vertical direction.
4. according to a kind of low-crystallinity polypropene composition described in claim 1, it is characterised in that：The poly- second of metallocene
The melt flow rate (MFR) of alkene is 2.5-3.5g/10min under the conditions of 190 DEG C/2.16kg, crystallization temperature is 107-116 DEG C, melting
Temperature is 118-129 DEG C.
5. according to a kind of low-crystallinity polypropene composition described in claim 1, it is characterised in that：The polybutene is fourth
Polyamino alkenyl object or butylene are mixed with one or both of α-olefin copolymer of 2~8 carbon atoms in addition to butylene；
The polybutene melt flow rate is 0.01~50g/10min under 190 DEG C, the test condition of load 2.16kg.
6. according to a kind of low-crystallinity polypropene composition described in claim 1, it is characterised in that：The antioxidant is four
[β-(3,5- di-t-butyl 4- hydroxy phenyls) propionic acid] pentaerythritol ester, β-(3,5- di-t-butyl -4- hydroxy phenyls)
In the double octadecyls of propionic acid n-octadecyl alcohol ester, three-(2,4- di-tert-butyl-phenyl) phosphite esters, thio-2 acid at least
It is a kind of.
7. a kind of preparation method of low-crystallinity polypropene composition as described in claim 1, it is characterised in that：Copolymerization is poly-
60-78 parts of propylene, 12-22 parts of metallocene PE, 10-18 parts of polybutene, 0.1-1 parts of antioxidant are added high mixer and are mixed
5-15min；Then uniformly mixed material is added twin-screw extrude through being kneaded, squeezing out, obtains low-crystallinity polypropylene
Composition；The extrusion temperature that section is wherein respectively squeezed out in double screw extruder is 150-170 DEG C, 170-185 DEG C, 175- respectively
185℃、175-185℃、175-185℃、180-190℃、180-195℃、180-195℃、180-195℃、185-200℃。
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| CN201710045938.9A CN108329642A (en) | 2017-01-19 | 2017-01-19 | A kind of low-crystallinity polypropene composition and preparation method thereof |
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| CN201710045938.9A CN108329642A (en) | 2017-01-19 | 2017-01-19 | A kind of low-crystallinity polypropene composition and preparation method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6153701A (en) * | 1998-11-20 | 2000-11-28 | International Paper Company | Wettable polypropylene composition and related method of manufacture |
| CN105273301A (en) * | 2014-06-06 | 2016-01-27 | 中国石油化工股份有限公司 | Low-shrinkage polypropylene composite material and preparation method thereof |
-
2017
- 2017-01-19 CN CN201710045938.9A patent/CN108329642A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6153701A (en) * | 1998-11-20 | 2000-11-28 | International Paper Company | Wettable polypropylene composition and related method of manufacture |
| CN105273301A (en) * | 2014-06-06 | 2016-01-27 | 中国石油化工股份有限公司 | Low-shrinkage polypropylene composite material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 温变英: "《高分子材料加工（第二版）》", 31 December 2016 * |
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Application publication date: 20180727 |