CN105694223B - Glass fiber reinforced polypropylene composite material and preparation method thereof - Google Patents
Glass fiber reinforced polypropylene composite material and preparation method thereof Download PDFInfo
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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Abstract
The present invention relates to a kind of glass fiber reinforced polypropylene composite materials and preparation method thereof.The composite material, the raw material including following parts by weight: 50~80 parts by weight of polypropylene, 10~50 parts by weight of short glass fiber reinforcement, 5~10 parts by weight of interfacial compatibilizer and micro-structure adjust 0.5~3 parts by weight of auxiliary agent.Present invention employs structures, the discrepant fiberglass reinforced system collocation of diameter, and under efficient Interfacial compatibilization and quick crystallization nucleation booster action, common building is evenly distributed, the good organic and inorganic two-phase enhancing system of interfacial adhesion, the buckling deformations of resulting PP composite material reduce by 30%~60% compared with traditional material, especially the fiberglass reinforced system performance of low content is more prominent, material stiffness index such as bending strength, bending modulus promotes 30% on year-on-year basis, material shrinkage is lower simultaneously, and excellent dimensional stability is provided in high and low temperature environment.
Description
Technical field
The invention belongs to technical field of polymer materials, and in particular to a kind of low warpage, high-dimensional stability, high rigidity
Glass fiber reinforced polypropylene composite material and preparation method thereof.
Background technique
Polypropylene PP is a kind of widely applied general-purpose plastics, has excellent comprehensive performance and processing and forming type, opposite
Cheap price, be added glass fibre GF can not only effectively make up polyacrylic performance deficiency, and can further decrease material at
This, is one of the focus of current automobile polypropylene material modification.
As current automotive light weight technology, environmental protection demand become increasingly conspicuous, the glass fiber reinforcement thermoplasticity of high performance-price ratio
Composite material is a kind of ideal solution, has the characteristics that simple processing, easily injection molding, fiber are evenly distributed, is suitable for
Complex-shaped secondary load-carrying construction component in automobile.By taking front end frame as an example, it is small-sized that performance requirement is relatively low, yield is bigger
Passenger car gradually using can injection molding glass fiber reinforcement thermoplastic granulates material, wherein outstanding example be exactly roving glass fiber increase
Strong material LFT, but by particle institute's fibre-bearing it is long, the cast gate of mold, runner, Structural Design Requirement be very when to parts-moulding
Height, and processing output is relatively low, high expensive, is unfavorable for the large-scale promotion on automobile, and these are exactly short glass fiber reinforcing material
Where the advantage of SFT.
However, the self-defect of short glass fiber reinforced polypropylene compound material be also it is very prominent, it is most apparent precisely due to
The distribution length of contained reinforcing fiber is too short (05~0.8mm) in its particle, be significantly less than long glass fiber-reinforced polypropylene 2~
3mm, thus, it is not only considerably lower in terms of fiber-reinforcing effect and material mechanical performance, and to the integrated support of Injection moulded part
Effect is also very limited, and product is easy warpage, deformation, especially in the flat product of large size for some low thickness (≤2mm)
It is especially prominent when such as bottom backplate, enging cabin the cover, case cover.Therefore, traditional solution is such as
Shallow shrink mark described in CN201210281373, low warp glass fiber reinforced polypropylene material, using isotropic mineral-filled
Body partially substitutes one-dimension oriented fiberglass reinforced body, although can improve the deformation degree of its material, reinforcing effect is opposite to be had
The use of the miberal powder of effect reduces the rigidity and intensity of material to a certain extent；CN201310465800 also uses similar
Solution, although the reinforcing effect of glass powder is better than mineral system, the loss of length makes the overall mechanical properties of material
Still in relatively low level；Existing case shows that isotropic powder systems introducing can improve to a certain extent
The degree of orientation of fibre reinforced materials, but the mechanical property partially to reduce material is cost, and its to be modified emphasis simple
Fiber reinforcement system is relied on, and has ignored the overall effect of fibre reinforced composites, especially the effect of matrix modification, because
This, this lightweight trend that can not really cope with current automobile " mould Dai Gang " produces high-performance fiber glass reinforced polypropylene used
The core demand of product.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of glass fiber reinforced polypropylene composite materials
And preparation method thereof.
The purpose of the present invention is achieved through the following technical solutions:
The first object of the present invention is to provide a kind of glass fiber reinforced polypropylene composite material, including following parts by weight
Raw material:
The micro-structure adjustment auxiliary agent is made of crystalling propylene nucleating agent and nano functional master batch；Wherein, polypropylene
Crystallization nucleating agent is 0.2~1 parts by weight, and nano functional master batch is 0.3-2 parts by weight.
Further, the polypropylene is homopolypropylene, and under 230 DEG C, the test condition of 2.16Kg, melting refers to
Number is 2~20g/10min.
Further, it is short to be selected from the rounded short glass fiber in section, ellipse for short glass fiber enhancing system
Glass fibre, one or more of in triangle short glass fiber is cut, fibre diameter is 7~13 μm, and chopped length is 3~4.5 μ
m。
Further, the interfacial compatibilizer is maleic anhydride inoculated polypropylene PP-MAH, grafting rate 1.0%.
Further, the crystalling propylene nucleating agent is selected from polypropylene 6, nucleator in organic phosphate class, aromatic amine
The middle one or more of class nucleating agent, rare earth chemistry object.
Further, the nano functional master batch is using polypropylene PP as the 400-800nm nano-dispersion ruler of carrier
Spending inorganic mineral enhances particle, and solid content is 5~20wt%.
The second object of the present invention is to provide a kind of preparation method of glass fiber reinforced polypropylene composite material, described
Method the following steps are included:
(1) polypropylene, interfacial compatibilizer, micro-structure first are weighed by following parts by weight and adjusts auxiliary agent, be uniformly mixed, mixed
Raw material is closed, short glass fiber enhancing system is then weighed；
The micro-structure adjustment auxiliary agent is made of crystalling propylene nucleating agent and nano functional master batch；Wherein, polypropylene
Crystallization nucleating agent is 0.2~1 parts by weight, and nano functional master batch is 0.3-2 parts by weight；
(2) it by after the drying of above-mentioned mixed raw material, is placed in the main feeding bin of meshing co rotating twin screw extrusion, through feeding spiral shell
Bar is added in the machine barrel of extruder, short glass fiber enhancing system is added in extruder from side spout, extruder spiral shell
Shank diameter is 35mm, and draw ratio L/D is 40, each zone temperature setting that main barrel is exported from feed opening to head are as follows: 60 DEG C,
180 DEG C, 200 DEG C, 210 DEG C, 220 DEG C, 220 DEG C, 220 DEG C, engine speed are 200 revs/min, through melting extrusion, cooling, are made
Glass fiber reinforced polypropylene composite material is made in grain, drying and processing.
The high-performance glass fiber reinforced polypropylene composite material being prepared according to the technical solution of the present invention has extremely excellent
Different anti-warp characteristics and dimensional stability, meanwhile, it avoids that reduction of the powder to composite material inflexible target is added, preferably copes with
Automotive light weight technology designs performance indicator requirement of the lower large scale structure product to raw material.The emphasis of invention is selection not
Similar shape, the chopped glass fiber reinforcement of diameter compounding, nano functional master batch aid dispersion effect under, the orientation of fiber and point
Scattered distribution situation has apparent improvement, and therefore, the enhancing system of good distribution is more preferable to the support effect of polypropylene matrix,
To assign the better dimensional stability of composite material and that resist warping deformability.At 20%, composite material is stuck up glass fiber content
Song, which measures year-on-year conventional material, reduces by 40%~50%, and is further promoted to 50% with glass fiber content, and composite material is stuck up
Bent deflection levels off to zero, and similar size effect is also maintained under the conditions of environment alternation；Importantly, this size
The acquisition of characteristic is not to sacrifice the rigidity of composite material for cost, and the bending property index of opposite material has compared with conventional material
30%~40% increase rate, bending strength range up to 170MPa, and bending modulus is in 9500MPa or more, properties
Index and machine-shaping performance have approached the Long Glass Fiber Reinforced PP Composite of same glass fiber content, show that research institute obtains
High-performance short glass fiber reinforced polypropylene compound material front end frame, skylight sash, instrument board framework, enging cabin the cover,
There is good application prospect in terms of the large scale structures such as engine bottom guard plate product or functor.
Selection and composite by unique Multiple Shape fiberglass reinforced body are aided with Interfacial compatibilization agent, micro-structure adjustment
Effective adjustment of the agent to matrices of composite material, interface, makes modified glass fiber reinforced polypropylene composite material is made and has distribution
It is smaller, degree of scatter is higher, orientation rationally enhancing system, in addition effective tune of the auxiliary agent to polypropylene matrix crystal property
Whole, crystal regularity is high, crystalline rate is fast, to ensure that material has in fabulous anti-warp characteristics and high and low temperature environment
Dimensional stability, simultaneously as avoid the mineral system using low reinforcing effect, the main rigidity of material, intensity index are such as
Bending strength and modulus, unnotched impact strength etc. do not reduce not only, there is the improvement of partial extent, especially impact property instead
Improvement it is particularly evident, the performance indexes of material is able to satisfy the associated materials standard of each famous brand main engine plants.
Compared with prior art, the positive effect of the present invention is as follows:
The present invention is directed to traditional short glass fiber reinforced polypropylene material because Length of Glass Fiber is low, is unevenly distributed, in addition poly- third
Alkene crystalline rate is low, and crystal structure is imperfect and leads to easy warpage, easily-deformable, the insufficient defect of rigidity, uses structure, diameter
Discrepant fiberglass reinforced system collocation, and under efficient Interfacial compatibilization and quick crystallization nucleation booster action, it is common to construct
It is evenly distributed, the good organic and inorganic two-phase enhancing system of interfacial adhesion.The buckling deformations of resulting PP composite material compared with
Traditional material reduces more prominent, the material stiffness index of the fiberglass reinforced system performance of 30%~60%, especially low content
As bending strength, bending modulus promote 30% on year-on-year basis, while material shrinkage is lower, is provided in high and low temperature environment excellent
Dimensional stability is the high dedicated modified material of automobile large-sized structural parts of a kind of good stability of the dimension, rigidity.
Specific embodiment
Below by specific embodiment, the present invention is described further, and the embodiment is merely to illustrate this hair
It is bright rather than limiting the invention.
The embodiment of the present invention is raw materials used:
PP-1: homo-polypropylene, crystallinity Xc >=65%, South Korea PolyMirae, melt index MFR are 12g/10min (230
℃、2.16Kg)。
PP-2: homo-polypropylene, crystallinity Xc >=60%, northern Hua Jin, melt index MFR be 5g/10min (230 DEG C,
2.16Kg)。
Chopped glass fiber -1:ECS-305H, diameter are 13 μm, chopped length 4.5mm, Chongqing glass CPIC.
Chopped glass fiber -2:SS-10-420, powdery glass, chopped length 0.3mm, 11 microns of diameter, Japanese Japan's weaving is public
Department.
Chopped glass fiber -3:CSG 3PL-820, anisotropic glass, the opposite sex is than being 2, and 13 μm of diameter, chopped length 3mm, Japan is eastern
Foreign textile company.
Interfacial compatibilizer: maleic anhydride inoculated polypropylene CMG-5001, the liter new material Co., Ltd of Nantong day, chemistry are surveyed
Trying grafting rate is 0.8%.
Crystalling propylene nucleating agent -1:TMA-5, nucleator in organic phosphate class, Shanxi chemical institute.
Crystalling propylene nucleating agent -2:PA6, viscosity 2.45, Ningbo Heng Run group；
Crystalling propylene nucleating agent -3:WBG-II, terres rares nucleating agent, the bright woods in Guangdong are taken in the fresh the limited public affairs of material science and technology share
Department.
Nano functional master batch: M2005, nanometer silicon carbide fiber enhance master batch, Shanghai Chao Wei nanosecond science and technology Co., Ltd.
Properties of product test:
Tensile property: it is carried out by ISO527-2 standard, test rate 5mm/min.
Bending property: it is carried out by IS178 standard, span 64mm, test rate 2mm/min.
Impact property: being carried out on impact tester for simple supported beam by ISO179-1 standard, and batten notch is A type.
Warpage performance test: the template having a size of 355 × 70 × 3.2 is prepared on injection molding machine, one section is fixed on flat
On face, the other end is tested in the difference in height (cm) of planar diameter.
Shrinking percentage test: being tested by ISO 294-4 standard, and standard jig is 210 × 140 × 3.2mm, and test is vertical
Flow direction is tested respectively.
Linear expansion coefficient CLTE test: carrying out on TMA-600 instrument, and test section is -30 DEG C~120 DEG C, heating
Rate is 1 DEG C/min, tests the data in perpendicular flow direction.
Embodiment 1
Crystalling propylene nucleating agent, nano functional master batch are weighed according to the data of embodiment 1 in table 1, is uniformly mixed,
It can be prepared by micro-structure adjustment auxiliary agent 1.
Embodiment 2
Crystalling propylene nucleating agent, nano functional master batch are weighed according to the data of embodiment 2 in table 1, is uniformly mixed,
It can be prepared by micro-structure adjustment auxiliary agent 2.
Embodiment 3
Crystalling propylene nucleating agent, nano functional master batch are weighed according to the data of embodiment 3 in table 1, is uniformly mixed,
It can be prepared by micro-structure adjustment auxiliary agent 3.
Embodiment 4
Crystalling propylene nucleating agent, nano functional master batch are weighed according to the data of embodiment 4 in table 1, is uniformly mixed,
It can be prepared by micro-structure adjustment auxiliary agent 4.
1 micro-structure of table adjusts the formula table (unit: gram) of auxiliary agent
Embodiment 5
Each component is weighed by 5 data of embodiment shown in table 2, by each component other than chopped glass fiber enhancing system in height
It is uniformly mixed, is put into the main feeding bin of double screw extruder in fast mixing machine, chopped glass fiber enhancing system puts into side feed
Feed bin, extruder screw diameter are 35mm, and draw ratio L/D is 40, and engine speed is set as 200 revs/min, each point of main barrel
Area's temperature (exports) setting from feed opening to head are as follows: 60 DEG C, 180 DEG C, 200 DEG C, 210 DEG C, 220 DEG C, 220 DEG C, 220 DEG C, warp
Product is obtained after the processes such as melting extrusion, cooling, granulation, drying and processing.
Embodiment 6
Each component is weighed by 6 data of embodiment shown in table 2, by each component other than chopped glass fiber enhancing system in height
It is uniformly mixed, is put into the main feeding bin of double screw extruder in fast mixing machine, chopped glass fiber enhancing system puts into side feed
Feed bin, extruder screw diameter are 35mm, and draw ratio L/D is 40, and engine speed is set as 200 revs/min, each point of main barrel
Area's temperature (exports) setting from feed opening to head are as follows: 60 DEG C, 180 DEG C, 200 DEG C, 210 DEG C, 220 DEG C, 220 DEG C, 220 DEG C, warp
Product is obtained after the processes such as melting extrusion, cooling, granulation, drying and processing.
Embodiment 7
Each component is weighed by 7 data of embodiment shown in table 2, by each component other than chopped glass fiber enhancing system in height
It is uniformly mixed, is put into the main feeding bin of double screw extruder in fast mixing machine, chopped glass fiber enhancing system puts into side feed
Feed bin, extruder screw diameter are 35mm, and draw ratio L/D is 40, and engine speed is set as 200 revs/min, each point of main barrel
Area's temperature (exports) setting from feed opening to head are as follows: 60 DEG C, 180 DEG C, 200 DEG C, 210 DEG C, 220 DEG C, 220 DEG C, 220 DEG C, warp
Product is obtained after the processes such as melting extrusion, cooling, granulation, drying and processing.
Embodiment 8
Each component is weighed by 8 data of embodiment shown in table 2, by each component other than chopped glass fiber enhancing system in height
It is uniformly mixed, is put into the main feeding bin of double screw extruder in fast mixing machine, chopped glass fiber enhancing system puts into side feed
Feed bin, extruder screw diameter are 35mm, and draw ratio L/D is 40, and engine speed is set as 200 revs/min, each point of main barrel
Area's temperature (exports) setting from feed opening to head are as follows: 60 DEG C, 180 DEG C, 200 DEG C, 210 DEG C, 220 DEG C, 220 DEG C, 220 DEG C, warp
Product is obtained after the processes such as melting extrusion, cooling, granulation, drying and processing.
The low warpage of table 2, high-dimensional stability, high rigidity glass fiber reinforced polypropylene composite material formula table (unit:
Gram)
Comparative example 1
75 grams of PP-1,20 grams of chopped glass fibers -1,5 grams of interfacial compatibilizers are weighed, each component other than glass is mixed in high speed
It is uniformly mixed, is put into the main feeding bin of double screw extruder in conjunction machine, chopped glass fiber is put into lateral feeding bin, is squeezed out
The screw diameter of machine is 35mm, and draw ratio L/D is 40, and engine speed is set as 200 revs/min, each zone temperature of main barrel
(being exported from feed opening to head) setting are as follows: 60 DEG C, 160 DEG C, 190 DEG C, 195 DEG C, 200 DEG C, 210 DEG C, 210 DEG C are squeezed through melting
Out, product is obtained after the processes such as cooling, granulation, drying and processing.
Comparative example 2
Commercially available front end frame of automobile Long Glass Fiber Reinforced PP Composite, glass fiber content 30%, the trade mark:
GD301FEC is provided, as a comparison case 2 by Borouge plastics (Shanghai) Co., Ltd..
The low warpage of table 3, high-dimensional stability, high rigidity glass fiber reinforced polypropylene composite material the performance test results
From the point of view of the performance test of each embodiment and comparative example shown in the table 3, using heretofore described different shape,
The chopped glass fiber of characteristic enhances system, can obviously improve the buckling deformation amount of composite material, without being substantially reduced composite material
Mechanical performance index.The all data of comparative example 1,2 and comparative example 1 it is found that 20% glass fiber content equal conditions
Under, embodiment 1,2 buckling deformations, shrinking percentage and linear expansion coefficient CLTE are considerably lower, and main inflexible target is as being bent
Intensity and modulus, impact strength etc. all substantially remain in very similar level.The mechanical property of embodiment 1 is compared with embodiment 2
It is higher, then show that the using effect of anisotropic glass is better than powdery glass.As glass fiber content is promoted to 30% (embodiment 3),
Gap between the every mechanical performance data and long glass fiber reinforced product of composite material has been obviously reduced, portion size performance
Index such as shrinking percentage, CLTE is more preferable instead.And glass fiber content, when being further promoted to 50%, the buckling deformation amount of composite material is
Substantially it can be ignored (3mm), show that the fiber reinforcement system in composite material has ideal distribution situation.Certainly,
Above-mentioned performance improvement can not ignore the effect of micro-structure regulator, especially crystalling propylene nucleating agent, dilute from the point of view of comparison
The resultant effect of great soil group crystallization nucleating agent is preferable, to high crystalline can crystallization of the polypropylene matrix when form crystallisation by cooling it is fast
Rate, crystal regularity and integrated degree have better regulating effect.
In general, the novel short glass fiber reinforced polypropylene product that the present invention is described is produced in traditional short glass fiber enhancing
On the basis of product, the characteristic such as that resist warping, good stability of the dimension, high rigidity etc. of part roving glass fiber product is imparted, but short glass fiber produces
Product can production it is more preferable, material processing cost is lower, product Preliminary Applications in the front end frame project of certain public vehicle
In, show that the product has the preferable market competitiveness and application prospect, the fabulous cooperation of energy promotes current major institute, main engine plants
The light-weighted design concept of car industry " mould Dai Gang " is promoted, is front end frame, skylight sash, instrument board framework, engine
The large scale structures such as bottom guard plate product or functor provide a kind of more optinal plans in design, selection, processing, to create
Good social benefit and market value.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent defines.
Claims (2)
1. a kind of glass fiber reinforced polypropylene composite material, which is characterized in that the raw material including following parts by weight:
72.5 parts by weight of PP-2
Chopped glass fiber enhances 20 parts by weight of system
Micro-structure adjusts 2.5 parts by weight of auxiliary agent
5 parts by weight of interfacial compatibilizer
Wherein, chopped glass fiber enhancing system is made of the chopped glass fiber -3 of 10 parts by weight and the chopped glass fiber -2 of 10 parts by weight, micro-
Structural adjustment auxiliary agent is made of the nano functional master batch of the parts by weight of crystalling propylene nucleating agent -2 and 1.5 of 1 parts by weight；
Or the raw material including following parts by weight:
64.5 parts by weight of PP-1
Chopped glass fiber enhances 30 parts by weight of system
Micro-structure adjusts 0.5 parts by weight of auxiliary agent
5 parts by weight of interfacial compatibilizer
Wherein, chopped glass fiber enhancing system is made of the chopped glass fiber -1 of 5 parts by weight and the chopped glass fiber -2 of 25 parts by weight, micro- knot
Structure adjustment auxiliary agent is made of the nano functional master batch of the parts by weight of crystalling propylene nucleating agent -3 and 0.3 of 0.2 parts by weight；
Or the raw material including following parts by weight:
42.5 parts by weight of PP-1
Chopped glass fiber enhances 50 parts by weight of system
Micro-structure adjusts 2.5 parts by weight of auxiliary agent
5 parts by weight of interfacial compatibilizer
Wherein, chopped glass fiber enhancing system is made of the chopped glass fiber -1 of 10 parts by weight and the chopped glass fiber -2 of 40 parts by weight, micro-
Structural adjustment auxiliary agent is by the crystalling propylene nucleating agent -1 of 0.3 parts by weight, the crystalling propylene nucleating agent -3 and 2 of 0.2 parts by weight
The nano functional master batch of parts by weight forms；
The source of above-mentioned raw materials and parameter are as follows:
PP-1: homo-polypropylene, crystallinity Xc >=65%, South Korea PolyMirae, melt index MFR are 12 g/10min, test
Condition is 230 DEG C, 2.16Kg；
PP-2: homo-polypropylene, crystallinity Xc >=60%, northern Hua Jin, melt index MFR are 5 g/10min, and test condition is
230℃,2.16Kg；
Chopped glass fiber -1:ECS-305H, diameter are 13 μm, chopped length 4.5mm, Chongqing glass CPIC；
Chopped glass fiber -2:SS-10-420, powdery glass, chopped length 0.3mm, 11 microns of diameter, Japanese Japan's textile company；
Chopped glass fiber -3:CSG 3PL-820, anisotropic glass, the opposite sex is than being 2, and 13 μm of diameter, chopped length 3mm, Japanese Japan is spun
Knit company；
Interfacial compatibilizer: maleic anhydride inoculated polypropylene CMG-5001, the liter new material Co., Ltd of Nantong day, test chemical connect
Branch rate is 0.8%；
Crystalling propylene nucleating agent -1:TMA-5, nucleator in organic phosphate class, Shanxi chemical institute；
Crystalling propylene nucleating agent -2:PA6, viscosity 2.45, Ningbo Heng Run group；
Crystalling propylene nucleating agent -3:WBG-II, terres rares nucleating agent, the bright woods in Guangdong are taken in the fresh material Science and Technology Co., Ltd.；
Nano functional master batch: M2005, nanometer silicon carbide fiber enhance master batch, Shanghai Chao Wei nanosecond science and technology Co., Ltd.
2. a kind of preparation method for preparing a kind of glass fiber reinforced polypropylene composite material described in claim 1, feature
It is, the described method comprises the following steps:
Each component is weighed by formula, each component other than chopped glass fiber enhancing system is uniformly mixed in high-speed mixer, is thrown
Enter into the main feeding bin of double screw extruder, chopped glass fiber enhancing system puts into side feed feed bin, and extruder screw diameter is
35mm, draw ratio L/D are 40, and engine speed is set as 200 revs/min, and each zone temperature of main barrel is from feed opening to head
Outlet setting are as follows: 60 DEG C, 180 DEG C, 200 DEG C, 210 DEG C, 220 DEG C, 220 DEG C, 220 DEG C, through melting extrusion, cooling, granulation, drying
Product is obtained after processing.
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| CN106313484A (en) * | 2016-08-23 | 2017-01-11 | 无锡吉兴汽车声学部件科技有限公司 | Production method for bottom protection plate of automobile engine |
| CN108070140B (en) * | 2016-11-09 | 2021-01-22 | 神华集团有限责任公司 | Fiber modifier, modified fiber, preparation method and application of fiber modifier and modified fiber, polypropylene composite material and preparation method of polypropylene composite material |
| CN109890848B (en) * | 2016-11-11 | 2020-05-05 | 巴塞尔聚烯烃意大利有限公司 | Polypropylene composition containing glass fibre filler |
| CN107641255B (en) * | 2017-10-19 | 2020-08-25 | 中广核俊尔（上海）新材料有限公司 | Glass fiber reinforced polypropylene composite material and preparation method thereof |
| CN108707279B (en) * | 2018-05-18 | 2021-01-19 | 中广核俊尔（上海）新材料有限公司 | Low-melting-mark flow-mark-free spraying-free polypropylene composite material and preparation method thereof |
| CN109262883B (en) * | 2018-07-06 | 2021-02-02 | 武汉金发科技有限公司 | Preparation method of glass fiber reinforced polypropylene composite material |
| CN110878159A (en) * | 2019-11-14 | 2020-03-13 | 中广核俊尔（上海）新材料有限公司 | Low-density polypropylene composite material and preparation method thereof |
| CN112795099B (en) * | 2021-01-18 | 2022-03-01 | 会通新材料股份有限公司 | Polypropylene reinforcing material for water purifier integrated water circuit board and preparation method thereof |
| CN113021836A (en) * | 2021-02-22 | 2021-06-25 | 浙江普利特新材料有限公司 | Method for quickly debugging fiber content in small-scale granulation of fiber reinforced composite material |
| CN113862814A (en) * | 2021-11-11 | 2021-12-31 | 东华大学 | Superfine chopped glass fiber reinforced polypropylene blended melt-spun composite fiber material and preparation method thereof |
| CN114835975B (en) * | 2022-03-25 | 2023-07-11 | 成都金发科技新材料有限公司 | Low-warpage glass fiber reinforced polypropylene composite material and preparation method and application thereof |
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| CN102816384A (en) * | 2012-08-08 | 2012-12-12 | 金发科技股份有限公司 | Glass fiber-reinforced polypropylene material with shallow shrinkage mark and low warpage as well as preparation method and application thereof |
| CN103819811A (en) * | 2012-11-16 | 2014-05-28 | 江苏金发科技新材料有限公司 | Fiberglass-reinforced polypropylene composite material capable of replacing nylon and preparation method for fiberglass-reinforced polypropylene composite material |
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| CN102816384A (en) * | 2012-08-08 | 2012-12-12 | 金发科技股份有限公司 | Glass fiber-reinforced polypropylene material with shallow shrinkage mark and low warpage as well as preparation method and application thereof |
| CN103819811A (en) * | 2012-11-16 | 2014-05-28 | 江苏金发科技新材料有限公司 | Fiberglass-reinforced polypropylene composite material capable of replacing nylon and preparation method for fiberglass-reinforced polypropylene composite material |
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