CN106633363A - Polypropylene composition for 3D printing, and preparation method thereof - Google Patents
Polypropylene composition for 3D printing, and preparation method thereof Download PDFInfo
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- CN106633363A CN106633363A CN201510710667.5A CN201510710667A CN106633363A CN 106633363 A CN106633363 A CN 106633363A CN 201510710667 A CN201510710667 A CN 201510710667A CN 106633363 A CN106633363 A CN 106633363A
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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
-
- 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
-
- 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
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
-
- 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
-
- 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
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- 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
- C08K2201/002—Physical properties
- C08K2201/004—Additives being defined by their length
-
- 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
-
- 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
-
- 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
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/18—Spheres
- C08L2205/20—Hollow spheres
Abstract
The present invention provides a polypropylene composition, which comprises, by mass (calculated as polypropylene), 100 parts of polypropylene, 10-50 parts of polylactic acid, and 0.1-3 parts of an antioxidant. The present invention further provides a preparation method of the polypropylene composition, wherein the preparation method comprises: stirring and mixing the raw materials to obtain a uniformly mixed material, melting, extruding, and cooling to obtain the polypropylene composition. According to the present invention, the polypropylene composition has characteristics of good safety, improved crystallinity, improved mechanical strength and easy demolding, and is particularly suitable for the 3D printing technology performing through a melt deposition method; and the sample printed by using the polypropylene composition is safe, non-toxic and hygienic, has partial degradation property, and can be used in a variety of fields of medical devices, children toys, food utensils, and the like.
Description
Technical field
The present invention relates to petrochemical industry.Specifically related to a kind of polypropene composition for 3D printing and its
Preparation method.
Background technology
3D printing technique, is designed a model as source with Computerized three-dimensional, by the way that software hierarchy is discrete and numerical control
Formation system, using laser beam, heats the modes such as nozzle by metal dust, ceramic powders, plastics, groups of cells
The special material such as knit and successively piled up and cohere, be finally superimposed molding, produce entity products.With it is conventionally manufactured
Industry is shaped to raw material by the machining mode such as mould, turnning and milling, is cut different with final production finished product,
3D solid is changed into several two dimensional surfaces by 3D printing, is produced by material process and successively superposition,
Greatly reduce the complexity of manufacture.
3D printing technique mainly has following several techniques, layer separated growth method (LOM), Stereolithography
Method (SLA), selective laser sintering process (SLS), fusion sediment method (FDM), 3 D-printing method (3DP).
Wherein, fusion sediment method has system aufbauprinciple and simple to operate, and maintenance cost is low, system operation safety,
The features such as suitable Design of Office environment, can more meet a small amount of various final products and make and product development test
Demand, is widely applied.
The printing macromolecular material of FDM techniques relatively conventional in the market has acrylonitrile-butadiene-benzene
Two kinds of ethylene copolymer (ABS) and polylactic acid (PLA).
ABS belongs to the preferable engineering plastics of mechanical property, and high abrasion resistance, good stability of the dimension, toughness is high,
It is widely used in the other 3D printing of technical grade, with excellent mechanical property, its impact strength is fabulous.Shortcoming
Slight plastic cement dissolving taste is had when being and printing.Certain research report is pointed out, in animal test, the heat of ABS
Decomposed substance has been found to be respectively provided with poisonous effect to rat and mice.Be not suitable for the desktop 3D of office environment
Printer.In addition, ABS material hygroscopicity is big, dry environment need to be deposited in or packed.
PLA belongs to transparent, translucent 3D printing material, beautiful in colour, can make translucent effect.Beat
The smooth exquisiteness of print effect, good fluidity.This 3D printing technique equally exists potential safety hazard, only opens poly- breast
When acid is two printers of raw material, the ultramicro powder in air can increase by three times.When simultaneously 5 machines work
When, ultramicro powder increases nearly 15 times.Ultra-fine grain can be deposited in the middle of pulmonary, and the blood that is directly ingested,
When concentration is higher, pneumonopathy, blood and nervous system disease may be caused to result even in death.
Therefore, for security reasons, ABS and PLA are not optimal FDM printed materials.And
Polypropylene has safety concurrently as a kind of common general-purpose plastics, its excellent in mechanical performance, compares ABS
There is bigger using value with PLA.
But, polypropylene by printing technology in 3D printing field due to being limited, and application is not quite varied,
One of reason is that polypropylene is compared with higher shrinkage factor with ABS with PLA.3D printing technique is related to gather
Propylene melting mixing in screw rod is subsequently pulled out winds filamentation on spool, is afterwards solid by melt cooling
The process of state.Due to polypropylene shrinkage factor it is higher so that the spinline diameter for pulling out is uneven, and cross section is not
It is circular.Shower nozzle can be blocked when so coiled material enters 3D printer charging aperture, causes discharging difficult, make printing break
It is discontinuously continuous, or even can not complete.Due to polyacrylic contraction in print procedure, can also cause product warpage,
The various problems such as deform, subside.
The content of the invention
In view of above-mentioned problems of the prior art, it is an object of the invention to provide a kind of be used for 3D printing
Polypropene composition and preparation method thereof.By the blending of polypropylene and polylactic acid, can reduce polyacrylic
Crystallization rate, reduces the shrinkage factor of polypropene composition, and the raw material for being particularly suitable as 3D printing is used.
An embodiment of the invention is, there is provided a kind of polypropene composition, its raw material includes：Polypropylene,
Polylactic acid and antioxidant, count by 100 mass parts of polypropylene, and the content of the polylactic acid is 10-50 mass parts,
The content of the antioxidant is 0.1-3 mass parts.
The present invention one preferred embodiment in, count by 100 mass parts of polypropylene, the polylactic acid
Content be 10-20 mass parts, the content of the antioxidant is 0.2-0.6 mass parts.
According to the present invention, the polylactic acid can be Poly-L-lactic acid (PLLA) or dextrorotation polylactic acid (R-
Polylactic acid), its crystallization rate is slower, and with polypropene blended polyacrylic crystallization rate can be reduced.By pressing
, by polypropylene and polylactic acid blend, the polypropene composition for obtaining, shrinkage factor is relatively low, crystallization rate for aforementioned proportion
It is slower, it is easy to the finished-product material of the uniform rule of manufacture.
According to the present invention, the polyacrylic melt index is 2-10g/min.
According to the present invention, the antioxidant be selected from antioxidant 1010, antioxidant 1076, antioxidant 1098,
At least one in antioxidant 2246, antioxidant CA, irgasfos 168, antioxidant 626 and antioxidant 636,
Preferably compositionss of antioxidant 1098 and irgasfos 168.
The present invention another preferred embodiment in, the raw material of the polypropene composition also includes alkene
Copolymer is counted as cross-linking agent by 100 mass parts of polypropylene, and the content of the cross-linking agent is 5-20 mass parts.
According to the present invention, the cross-linking agent has double bond as active reactive group, can be in melting extrusion process
In make polypropylene and polylactic acid crosslink reaction, generate long branched chain structure, the intensity of RPP compositionss
And toughness, so as to improve its mechanical property.
According to the present invention, the cross-linking agent can specifically be enumerated as ethylene styrene copolymer, poly- 2- phenyl -1, and 3
It is butadiene, poly- 2- phenyl -1,3- pentadienes, poly- 3- phenyl -1,3- pentadienes, poly- 3- phenyl -2,4- hexadienes, poly-
Epoxy radicals propylene, polycyclic epoxide butylene, polycyclic epoxide amylene, polycyclic epoxide hexene etc..
The present invention another preferred embodiment in, the raw material of the polypropene composition also includes nucleation
Agent, the nucleator is aromatic amides class compound, the preferably compound as shown in formula (3),
In formula, R is phenyl or naphthyl.
The present invention another preferred embodiment in, count by 100 mass parts of polypropylene, the nucleation
The content of agent is 0.01-3 mass parts, preferably 0.05-0.5 mass parts.
Inventor it has been investigated that, after adding aromatic amides class compound as nucleator, crystallization peak width becomes big,
Mean the crystallization rate for adding aromatic amides class compound to reduce polypropene composition, extend crystallization time.
Why aromatic amides possess this property, and inventor speculates, is because aromatic amides have
Two-way nucleating effect：Both α nucleation can have been induced, β nucleation can have been induced again.By the regulation and control to its concentration,
The special construction induction crystalling propylene of aromatic amine compound defines special pattern (aromatic amides elder generation
In crystalling propylene, separate out from melt polypropylene, be aggregated into fento and form the structure of cluster-shaped, generate interior
So that α and less β spherocrystals are constituted, outside mixes spherocrystal with what larger β spherocrystals were constituted in portion), α can be made
Nucleation and β nucleation both crystallization processs separate to a certain extent and sequentially occur, so as in polypropylene group
Wider peak crystallization is shown on the crystallization curve of compound, wider crystallizing range is obtained.In addition, aromatic amides
The addition of compound can also improve the impact strength of polypropene composition.On the other hand, the consumption of nucleator is excessive,
The crystallization temperature that polypropene composition can be made is improved, and is unfavorable for the technique effect of the present invention, therefore is not preferably used
Higher than the nucleator of above-mentioned restriction scope.
The present invention another preferred embodiment in, the raw material of the polypropene composition is also comprising crystalline substance
Must, the whisker is organic crystalline palpus or inorganic crystal whisker.
According to the present invention, the inorganic crystal whisker be selected from crystal whisker of hexa potassium titanate, calcium sulfate crystal whiskers, calcium carbonate crystal whisker,
At least one in ZnOw and magnesium borate crystal whisker.Count by 100 mass parts of polypropylene, the inorganic crystalline substance
The content of palpus is 5-30 mass parts, preferably 10-20 mass parts.
According to the present invention, the organic crystalline must be poly- (BA-St) whisker and/or poly- (4- hydroxyls
Benzene methyl) whisker (PHB whiskers).Count by 100 mass parts of polypropylene, the content of the organic crystalline palpus is
10-40 mass parts, preferably 10-20 mass parts.
Whisker has the characteristics such as high intensity, high-moduluss, lightweight, except significantly combining RPP
Outside the mechanical strength of thing, also there is certain effect to reducing polyacrylic shrinkage factor.
Another embodiment of the invention, is the preparation method for providing above-mentioned polypropene composition, including：
Above-mentioned raw materials stirring is mixed, uniform compound is obtained, Jing meltings, extrusion, cooling are obtained final product.
According to the present invention, above-mentioned melting extrusion process is carried out preferably in double screw extruder.
The present invention one preferred embodiment in, the speed of agitator be 500-3000 rev/min, stirring
Time is 0.5-5 minutes.
The present invention another preferred embodiment in, the screw speed be 200-400 rev/min, cooling
Temperature is 20-40 DEG C.
The present invention another preferred embodiment in, by double screw extruder from first paragraph to the 5th section
Temperature is controlled respectively in 200-230 DEG C, 210-260 DEG C, 210-275 DEG C, 200-260 DEG C and 200-260 DEG C (machine
Head temperature) carry out melting extrusion.
Yet further embodiment of the invention, is the application for providing above-mentioned polypropene composition in 3D printing.
The present invention one preferred embodiment in, the silk of the above-mentioned polypropene composition for 3D printing
A diameter of 1.75 ± 0.05mm of shape consumptive material.
The FDM printed material ABS being common in the market are not deposited according to polypropene composition provided by the present invention
With the toxic action of PLA, safety is preferable.Also, by polylactic acid to polyacrylic modifying function, poly- third
The intensity of ene compositions is improved, and shrinkage factor is reduced, and its mechanical property significantly improves, and is also easier to the demoulding,
Therefore it is particularly suitable for the 3D printing technique carried out by fusion sediment method.Additionally, using the polypropylene of the present invention
Secure sample, nontoxic, health that compositionss are printed, also with Partial digestion energy, be applicable to medical apparatus,
The multiple fields such as toy for children and food container.
Description of the drawings
Fig. 1 is shown the according to embodiments of the present invention 1 thread consumptive material for preparing.
Fig. 2 is shown that the crystallization of the polypropene composition of according to embodiments of the present invention 5 and the preparation of comparative example 1 is bent
Line, a is the crystallization curve of polypropene composition prepared by comparative example 1 in Fig. 2, and b is prepared by embodiment 5
The crystallization curve of polypropene composition.
Fig. 3 is the 3D printing product prepared according to the embodiment of the present invention 6,7 and comparative example 2, from left to right
It is followed successively by 3D printing product prepared by comparative example 2, embodiment 6 and embodiment 7.
Specific embodiment
By the following examples the present invention is described in detail, but protection scope of the present invention be not limited to it is following
Explanation.
In the examples below, the experimental raw for being used includes：
Polypropylene：Trade mark T30S, the production of Sinopec Maoming branch company；
Polylactic acid：Trade mark 4032D, U.S. NatureWorks are produced；
Cross-linking agent：Ethylene-styrene copolymer,ADR-4368-C, BASF AG's production.
Whisker：Crystal whisker of hexa potassium titanate, particle diameter is 0.2-0.6 μm, and length is about 10 μm, penetrates rich purchased from Shanghai is triumphant
Industrial Co., Ltd.；
Nucleator：N, N '-dicyclohexyl terephthalamide, Japan Chemical company；
Antioxidant：Antioxidant 1098, irgasfos 168, German BASF Ciba production.
In the examples below, the experimental facilitiess for being used include：
Double screw extruder：TE-34, the production of Nanjing Ke Ya plastics machineries company；
Injection moulding machine：HTF110X/1J, Ningbo Haitian Plastics Machinery Group Co., Ltd；
3D printer：UP Plus 2, Beijing Tiertime Technology Co., Ltd.；
High speed agitator：SHR-100A, Machinery Manufacturing Co., Ltd. of Weida of Zhangjagang City；
Microcomputer controlled electronic universal tester, GMT-6104, Shenzhen City Xinsansi Metering Technology Co., Ltd life
Produce；
Differential scanning calorimetric analysis instrument：Diamond DSC, Perkin Elmer companies of the U.S..
Embodiment 1-5 and comparative example 1
According to proportioning preparing experiment raw material as shown in table 1, the antioxidant in table is by antioxidant 1098 and antioxygen
Agent 168 is with mass ratio 1:1 mixes.
Proportioning raw materials (the unit of embodiment 1-5 of table 1 and comparative example 1：Mass parts)
| Polypropylene | Polylactic acid | Cross-linking agent | Whisker | Nucleator | Antioxidant | |
| Comparative example 1 | 100 | 0 | 0 | 0 | 0 | 0.1 |
| Embodiment 1 | 100 | 15 | 5 | 0 | 0 | 0.1 |
| Embodiment 2 | 100 | 40 | 5 | 0 | 0 | 0.3 |
| Embodiment 3 | 100 | 15 | 5 | 10 | 0 | 0.1 |
| Embodiment 4 | 100 | 20 | 15 | 10 | 0.1 | 0.2 |
| Embodiment 5 | 100 | 20 | 15 | 15 | 0.3 | 0.2 |
The raw material of embodiment 1-5 and comparative example 1 is added in high speed agitator respectively, at ambient temperature, with
Rotating speed takes out after mixing 2 minutes for 1300 revs/min, and be uniformly mixed material.
The uniform compound for obtaining is added in the hopper of double screw extruder, by double screw extruder from first paragraph
Control respectively at 200 DEG C, 210 DEG C, 210 DEG C, 200 DEG C and 200 DEG C (head temperature) to the 5th section of temperature,
Screw speed is 350 revs/min.Uniform compound is cooled down Jing after melting extrusion with 30 DEG C of cooling water,
Obtain final product.Thread consumptive material prepared by embodiment 1 is as shown in Figure 1.
Thread consumptive material obtained in embodiment 1-5 and comparative example 1 is carried out into pelletize, injection moulding machine is subsequently adding and is entered
Row injection (each section of temperature of injection moulding machine be 230 DEG C, 230 DEG C, 220 DEG C, 220 DEG C, 210 DEG C, pressurize pressure
Power 50MPa, dwell time 60s, cool time 10s), injected sample is obtained, and test its performance, test
The results are shown in Table 2.
Test foundation：Impact strength standard is ASTM D-256 (23 DEG C), and tensile strength testing standard is ASTM
D-638, shrinkage factor testing standard is ASTM D955-08.
The performance of the injected sample of embodiment 1-5 of table 2 and comparative example 1
As shown in Table 2, the polypropene composition of embodiment of the present invention 1-5 is compared with the polypropylene of comparative example 1,
Tensile strength is suitable or makes moderate progress, and the trend that impact strength is improved and shrinkage factor is reduced is obvious, so as to especially fit
For fused glass pellet technique.
Thread consumptive material obtained in embodiment 5 and comparative example 1 is carried out respectively weighing 1.5mg after pelletize respectively, in N2
Under atmosphere, 230 DEG C are warmed up to 10 DEG C/min, 2min are stopped to eliminate thermal history, then with 10 DEG C/min
Rate of temperature fall be down to 50 DEG C, obtain crystallization curve, as shown in Figure 2.
As shown in Fig. 2 compared with comparative example 1, the knot of the polypropene composition prepared by the embodiment of the present invention 5
Brilliant temperature is suitable with comparative example 1, but crystallizing range is wider such that it is able to slow down crystallization rate, reduces shrinking
Rate, is therefore particularly suitable for fused glass pellet technique.
Embodiment 6
3D printer nozzle temperature is warmed up to into 260 DEG C, after 3D printer is stable, prepared by embodiment 2
Thread consumptive material be put into 3D printer charging aperture, start to print, stamp with the size is vertical for 2cm × 2cm × 2cm's
Cube, print thickness is 0.4mm/ layers.The photo of printed product is as shown in Figure 3.
Embodiment 7
Thread consumptive material obtained in embodiment 4 is carried out into 3D printing according to operation same as Example 6.Print
The photo of product is as shown in Figure 3.
Comparative example 2
Thread consumptive material obtained in comparative example 1 is carried out into 3D printing according to operation same as Example 6.Print
The photo of product is as shown in Figure 3.
As seen from Figure 3, compared with comparative example 2, the product that embodiments of the invention 6,7 are printed occurs
The situation of deformation has clear improvement, overcome well print in cause because shrinkage factor is too high deformation, collapse
The problems such as collapsing, product quality is significantly improved.
It should be noted that embodiment described above is only used for explaining the present invention, do not constitute to the present invention's
Any restriction.By referring to exemplary embodiments, invention has been described, it should be appreciated that wherein used
Word is descriptive and explanatory vocabulary, rather than limited vocabulary.Can be by regulation in the claims in the present invention
In the range of the present invention is modified, and the present invention is carried out in without departing substantially from scope and spirit of the present invention
Revision.Although the present invention described in it is related to specific method, material and embodiment, it is not intended that
The present invention is limited to wherein disclosed particular case, conversely, the present invention to can be extended to other all with identical function
Methods and applications.
Claims (11)
1. a kind of polypropene composition, its raw material includes：Polypropylene, polylactic acid and antioxidant, be with polypropylene
100 mass parts meters, the content of the polylactic acid is 10-50 mass parts, and the content of the antioxidant is 0.1-3 matter
Amount part.
2. polypropene composition according to claim 1, it is characterised in that with polypropylene as 100 mass
Part meter, the content of the polylactic acid is 10-20 mass parts, and the content of the antioxidant is 0.2-0.6 mass parts.
3. polypropene composition according to claim 1 and 2, it is characterised in that the antioxidant is choosing
From antioxidant 1010, antioxidant 1076, antioxidant 1098, antioxidant 2246, antioxidant CA, antioxidant
168th, at least one in antioxidant 626 and antioxidant 636, preferably antioxidant 1098 and irgasfos 168
Compositionss.
4. the polypropene composition according to any one of claim 1-3, it is characterised in that the polypropylene
The raw material of compositionss, as cross-linking agent, is counted, the friendship also comprising olefin copolymer by 100 mass parts of polypropylene
The content of connection agent is 5-20 mass parts.
5. the polypropene composition according to any one of claim 1-4, it is characterised in that the polypropylene
The raw material of compositionss also includes nucleator, and the nucleator is aromatic amides class compound, preferably such as formula (3)
Shown compound,
In formula, R is phenyl or naphthyl.
6. polypropene composition according to claim 5, it is characterised in that with polypropylene as 100 mass
Part meter, the content of the nucleator is 0.01-3 mass parts, preferably 0.05-0.5 mass parts.
7. the polypropene composition according to any one of claim 1-6, it is characterised in that described poly- third
The raw material of ene compositions also includes whisker, and the whisker is organic crystalline palpus or inorganic crystal whisker.
8. polypropene composition according to claim 7, it is characterised in that the inorganic crystal whisker be selected from
In crystal whisker of hexa potassium titanate, calcium sulfate crystal whiskers, calcium carbonate crystal whisker, ZnOw and magnesium borate crystal whisker at least one
Kind, to count by 100 mass parts of polypropylene, the content of the inorganic crystal whisker is 5-30 mass parts, preferably 10-20
Mass parts.
9. polypropene composition according to claim 7, it is characterised in that the organic crystalline must be poly- (third
Olefin(e) acid butyl ester-styrene) whisker and/or poly- (4- hydroxyl benzene methyls) whisker (PHB whiskers), with polypropylene
For 100 mass parts meters, the content of the organic crystalline palpus is 10-40 mass parts, preferably 10-20 mass parts.
10. the preparation method of the polypropene composition any one of a kind of claim 1-9, including：Will
The raw material stirring mixing, obtains uniform compound, and Jing meltings, extrusion, cooling are obtained final product.
Application of the polypropene composition any one of a kind of 11. claim 1-9 in 3D printing.
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