CN109291295A - Improve the method for high-gloss polypropylene composite material toner point - Google Patents
Improve the method for high-gloss polypropylene composite material toner point Download PDFInfo
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- CN109291295A CN109291295A CN201810999306.0A CN201810999306A CN109291295A CN 109291295 A CN109291295 A CN 109291295A CN 201810999306 A CN201810999306 A CN 201810999306A CN 109291295 A CN109291295 A CN 109291295A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/88—Adding charges, i.e. additives
- B29B7/90—Fillers or reinforcements, e.g. fibres
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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- C—CHEMISTRY; METALLURGY
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- 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
- 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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Abstract
The invention discloses a kind of methods for improving high-gloss polypropylene composite material toner point, polypropylene granules and powder are used in this method simultaneously, and have adjusted pellet, the charging sequence of powder and filler, pellet is first added in batches or integrally, powder adds in two batches, and filler is added between the powder being added batch-wise twice when there is filler, entire adding procedure is to add in mixed at high speed, spatial dispersion in this method between powder is better than the dispersibility of conventional pellets and powder, and pellet can also play stirring action in powder, it can fully ensure that all materials mixing is uniform.Resulting PP composite material is prepared due to without any changes to raw material components type by this method, only pass through homogenous resins raw material morphologic change and charging sequence process reform, therefore it can guarantee on the basis of the mechanical performance of final products, heat resistance etc. do not change, not only glossiness is high, surface is uniform and smooth, without toner point, and the stability of color L value is preferable.
Description
Technical field
The present invention relates to a kind of modified method of PP composite material more particularly to a kind of improvement high-gloss polypropylene are multiple
The method of condensation material toner point, belongs to high molecular material and its forming processing technology field.
Background technique
Polypropylene (PP) is one of fastest-rising kind in five big general thermoplastic resins, is widely used in industrial production
In daily necessities.Material of the high-gloss polypropylene as high glazes products such as ideal substitution ABS, HIPS, has caused
The extensive interest of people and concern.Domestic and international such good modified polypropene of glossiness be widely used in stationery, household electrical appliance,
Other indoor life appliances.
Produce polypropylene product when in order to enhance product performance, improve product size stability, can be added some fillers and
Auxiliary agent can add a variety of different toners for the beauty of product also to produce the product to vary in color.But because of filler or color
The respective grain shape of powder, particle diameter distribution are different, largely affect polyacrylic surface gloss, product is caused to exist
There is heterochromatic point (color point) in article surface, these heterochromatic points due to caused by filler or toner dispersion unevenness are referred to as in this field
For toner point, by being molded into product, it is apparent that the aesthetics so as to cause product declines, the also largely upper limit
Polyacrylic use is made.Therefore, under the premise ofs improving its intensity, toughness, heat resistance etc., improve PP composite material
Toner point is necessary.
It is in the prior art usually that can be improved filler or toner point by adding in resin system for this problem
The related auxiliaries of uniformity are dissipated to improve toner point, but this mode needs to add new material variety, it is also taken into consideration whether shadow
Composition properties and manufacturing cost, production technology etc. are rung, and are extremely difficult to good effect.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of sides for improving high-gloss polypropylene composite material toner point
Method, preparing resulting high-gloss polypropylene composite material by this method, not only surface is without toner point, and properties of product are stablized, preparation
Simple process.
The technical scheme is that
The invention discloses a kind of methods for improving high-gloss polypropylene composite material toner point, and this method includes following steps
It is rapid:
(1) to weigh polypropylene granules, polypropylene powder, toner, filler and other components according to formulation dosage spare；Wherein
Polypropylene granules, polypropylene powder, toner, filler and other components account for the high-gloss polypropylene composite material of no toner point respectively
The percentage of gross mass are as follows: polypropylene granules 30-60wt.%, polypropylene powder 20-60wt.%, toner 0.5-3.0wt.%,
Filler 0-45wt.% and other components 0-3wt.%；
(2) at least 5wt.% and the total matter of polypropylene powder of polypropylene granules gross mass are successively put into high-speed mixer
Start high-speed mixer after the 10-90wt.% of amount and carry out mixed at high speed, then successively puts into filler, residue poly- third thereto again
Continue mixed at high speed after alkene powder, toner and other components, obtains premix；Wherein high-speed mixer carries out mixed at high speed
When revolving speed be 400-900r/min；
(3) above-mentioned gained premix and remaining polypropylene granules are added twin-screw extrude melt blending to squeeze out, is obtained
To the high-gloss polypropylene composite material of no toner point.
Its further technical solution is:
The melt flows speed of polypropylene granules described in step (1) and polypropylene powder under 230 DEG C and 2.16kg pressure
Rate is 1-100g/10min, more preferably 20-50g/10min；And the partial size of the polypropylene powder is 20-80 mesh.
The partial size of filler described in step (1) be 2000-5000 mesh, and the filler be talcum powder, barium sulfate, calcium carbonate,
At least one of mica powder, wollastonite, kaolin, silica, diatomite, asbestos and wood powder, filler can also be modified
Other common fillers in plastic industry.
Other components described in step (1) include nucleating agent, are used to help nucleation of polypropylene resins.
The dosage for putting into polypropylene granules in high-speed mixer in step (2) for the first time accounts for the amount of polypropylene granules gross mass and is
X, as 5%≤X < 100%, premix and remaining polypropylene granules are entered by weight loss type feeder double respectively in step (3)
Screw Extrusion owner's spout；As X=100%, premix is directly entered twin-screw extrusion owner's spout in step (3).
The melting extrusion technological parameter of double screw extruder described in step (3) are as follows: one section 90-110 DEG C, two sections of 190-
210 DEG C, three sections 210-230 DEG C, four sections 210-230 DEG C, five sections 210-230 DEG C, six sections 200-220 DEG C, seven sections 200-220 DEG C,
And head temperature is 210-230 DEG C.
The draw ratio of double screw extruder described in step (3) is (36-56): 1, and screw speed is 300-1100rpm.
The invention also discloses the high-gloss polypropylene composite materials that a kind of above method prepares resulting no toner point, should
Composite material is by following each components preparation according to the high-gloss polypropylene composite material gross mass percentages for accounting for no toner point
It forms: polypropylene granules 30-60wt.%, polypropylene powder 20-60wt.%, toner 0.5-3.0wt.%, filler 0-45wt.%
With other components 0-3wt.%.
Its further technical solution is:
The melt flow rate (MFR) of the polypropylene granules and polypropylene powder under 230 DEG C and 2.16kg pressure is 1-
100g/10min；And the partial size of the polypropylene powder is 20-80 mesh.
The partial size of the filler is 2000-5000 mesh, and the filler is talcum powder, barium sulfate, calcium carbonate, mica powder, silicon
At least one of lime stone, kaolin, silica, diatomite, asbestos and wood powder, filler can also be in modified plastic industry
Other common fillers；The other components include nucleating agent, are used to help nucleation of polypropylene resins.
The method have the benefit that: the method for the invention is related with its specific surface area according to the dispersibility of substance
The principle of (large specific surface area then good dispersion), optimizes product formula first, change be used only in traditional handicraft pellet or
The case where using only powder, while having used polypropylene granules and polypropylene powder；Furthermore this method has adjusted mixing procedure, weight
The charging sequence for having adjusted pellet, powder and filler is put, pellet is first added in batches or integrally, powder is added in two batches, and
Filler is added between the powder being added batch-wise twice in the case where there is filler, and entire adding procedure is side mixed at high speed
Side is added, and the spatial dispersion of powder and powder is got well when the dispersibility of pellet and powder before optimizing in the technique after optimization, and
And polypropylene particles can also play stirring action in powder, can fully ensure that all materials mixing is uniform in this way.Pass through
This method prepares the high-gloss polypropylene composite material of resulting no toner point since the type to raw material components does not do any change
It is dynamic, only by homogenous resins raw material morphologic change and charging sequence process reform, therefore it can guarantee the machinery in final products
On the basis of performance, heat resistance etc. do not change, not only glossiness is high, and surface is uniform and smooth, no toner point, and color
The stability of L value is preferable, fluctuates between 62.5-62.7.
Specific embodiment
In order to better understand the technical means of the present invention, it and can be implemented in accordance with the contents of the specification, below
In conjunction with specific embodiments, specific embodiments of the present invention will be described in further detail, and following embodiment is for illustrating this hair
It is bright, but be not intended to limit the scope of the invention.
Raw material used by following specific embodiments and comparative example and equipment are as described below:
Polypropylene granules: melt flow rate (MFR) 12-16g/10min (230 DEG C/2.16KG), Sinopec's share has
Limit company provides；
Polypropylene powder: melt flow rate (MFR) 20-25g/10min (230 DEG C/2.16KG), it is former that Yuyao City newly creates bright and beautiful plastic cement
Expect that Co., Ltd provides；
Toner: commercially available common toner；
Filler: talcum powder, 3000 mesh, Haicheng City Tian Yuan chemical company provide；Barium sulfate, 3000 mesh, Qingdao east wind chemical industry are public
Department；
Other components: nucleating agent, it is commercially available；
Double screw extruder: model TSE-75, draw ratio 40:1, the production of Nanjing Rhea high polymer Equipment Limited.
Using above-mentioned raw materials, according to formula and technique shown in following embodiment and comparative examples, to prepare high-gloss polypropylene compound
Material.
Specific embodiment 1
Composition of raw materials:
Polypropylene granules 40wt.%, polypropylene powder 40wt.%, toner 1.0wt.%, filler 18.5wt.% and nucleation
Agent 0.5wt.%.
Preparation process:
(1) to weigh polypropylene granules, polypropylene powder, toner, filler and nucleating agent according to formulation dosage spare；
(2) start height after successively putting into 5wt.% polypropylene granules and 20wt.% polypropylene powder in high-speed mixer
Fast mixing machine carries out mixed at high speed, then successively put into thereto again filler, the remaining polypropylene powder of 20wt.%, toner and
Continue mixed at high speed after nucleating agent, obtains premix；Revolving speed when wherein high-speed mixer carries out mixed at high speed is 800-
900r/min；
(3) that the remaining polypropylene granules of above-mentioned gained premix and 35wt.% are passed through weight loss type feeder respectively is accurate
It is squeezed out into the main spout of double screw extruder and through the double screw extruder melt blending, obtains the bloom of no toner point
Damp PP composite material.
Specific embodiment 2
Composition of raw materials:
With specific embodiment 1.
Preparation process:
(1) to weigh polypropylene granules, polypropylene powder, toner, filler and nucleating agent according to formulation dosage spare；
(2) start height after successively putting into 20wt.% polypropylene granules and 20wt.% polypropylene powder in high-speed mixer
Fast mixing machine carries out mixed at high speed, then successively put into thereto again filler, the remaining polypropylene powder of 20wt.%, toner and
Continue mixed at high speed after nucleating agent, obtains premix；Revolving speed when wherein high-speed mixer carries out mixed at high speed is 800-
900r/min；
(3) that the remaining polypropylene granules of above-mentioned gained premix and 20wt.% are passed through weight loss type feeder respectively is accurate
It is squeezed out into the main spout of double screw extruder and through the double screw extruder melt blending, obtains the bloom of no toner point
Damp PP composite material.
Specific embodiment 3
Composition of raw materials:
Polypropylene granules 60wt.%, polypropylene powder 20wt.%, toner 2.0wt.%, filler 17.5wt.% and nucleation
Agent 0.5wt.%.
Preparation process:
(1) to weigh polypropylene granules, polypropylene powder, toner, filler and nucleating agent according to formulation dosage spare；
(2) start height after successively putting into 10wt.% polypropylene granules and 10wt.% polypropylene powder in high-speed mixer
Fast mixing machine carries out mixed at high speed, then successively put into thereto again filler, the remaining polypropylene powder of 10wt.%, toner and
Continue mixed at high speed after nucleating agent, obtains premix；Revolving speed when wherein high-speed mixer carries out mixed at high speed is 800-
900r/min；
(3) that the remaining polypropylene granules of above-mentioned gained premix and 50wt.% are passed through weight loss type feeder respectively is accurate
It is squeezed out into the main spout of double screw extruder and through the double screw extruder melt blending, obtains the bloom of no toner point
Damp PP composite material.
Specific embodiment 4
Composition of raw materials:
With specific embodiment 3.
Preparation process:
(1) to weigh polypropylene granules, polypropylene powder, toner, filler and nucleating agent according to formulation dosage spare；
(2) start height after successively putting into 30wt.% polypropylene granules and 10wt.% polypropylene powder in high-speed mixer
Fast mixing machine carries out mixed at high speed, then successively put into thereto again filler, the remaining polypropylene powder of 10wt.%, toner and
Continue mixed at high speed after nucleating agent, obtains premix；Revolving speed when wherein high-speed mixer carries out mixed at high speed is 800-
900r/min；
(3) that the remaining polypropylene granules of above-mentioned gained premix and 30wt.% are passed through weight loss type feeder respectively is accurate
It is squeezed out into the main spout of double screw extruder and through the double screw extruder melt blending, obtains the bloom of no toner point
Damp PP composite material.
Specific embodiment 5
Composition of raw materials:
Polypropylene granules 50wt.%, polypropylene powder 40wt.%, toner 1.5wt.%, filler 8wt.% and nucleating agent
0.5wt.%.
Preparation process:
(1) to weigh polypropylene granules, polypropylene powder, toner, filler and nucleating agent according to formulation dosage spare；
(2) start height after successively putting into 15wt.% polypropylene granules and 20wt.% polypropylene powder in high-speed mixer
Fast mixing machine carries out mixed at high speed, then successively put into thereto again filler, the remaining polypropylene powder of 20wt.%, toner and
Continue mixed at high speed after nucleating agent, obtains premix；Revolving speed when wherein high-speed mixer carries out mixed at high speed is 800-
900r/min；
(3) that the remaining polypropylene granules of above-mentioned gained premix and 35wt.% are passed through weight loss type feeder respectively is accurate
It is squeezed out into the main spout of double screw extruder and through the double screw extruder melt blending, obtains the bloom of no toner point
Damp PP composite material.
Specific embodiment 6
Composition of raw materials:
With specific embodiment 5.
Preparation process:
(1) to weigh polypropylene granules, polypropylene powder, toner, filler and nucleating agent according to formulation dosage spare；
(2) start high speed after successively putting into whole polypropylene granules and 20wt.% polypropylene powder in high-speed mixer
Mixing machine carry out mixed at high speed, then again successively thereto put into filler, the remaining polypropylene powder of 20wt.%, toner and at
Continue mixed at high speed after core agent, obtains premix；Revolving speed when wherein high-speed mixer carries out mixed at high speed is 800-
900r/min；
(3) above-mentioned gained premix is directly entered in the main spout of double screw extruder and through the double screw extruder
Melt blending squeezes out, and obtains the high-gloss polypropylene composite material of no toner point.
Specific embodiment 7
Composition of raw materials:
Polypropylene granules 56wt.%, polypropylene powder 40wt.%, toner 3.0wt.% and nucleating agent 1.0wt.%.
Preparation process:
(1) to weigh polypropylene granules, polypropylene powder, toner and nucleating agent according to formulation dosage spare；
(2) start height after successively putting into 20wt.% polypropylene granules and 20wt.% polypropylene powder in high-speed mixer
Fast mixing machine carries out mixed at high speed, then successively puts into remaining polypropylene powder, toner and the nucleating agent of 20wt.% thereto again
After continue mixed at high speed, obtain premix；Revolving speed when wherein high-speed mixer carries out mixed at high speed is 800-900r/
min；
(3) that the remaining polypropylene granules of above-mentioned gained premix and 36wt.% are passed through weight loss type feeder respectively is accurate
It is squeezed out into the main spout of double screw extruder and through the double screw extruder melt blending, obtains the bloom of no toner point
Damp PP composite material.
Comparative example 1
Composition of raw materials:
Polypropylene granules 80wt.%, toner 1.0wt.%, filler 18.5wt.% and nucleating agent 0.5wt.%.
Preparation process:
(1) to weigh polypropylene granules, toner, filler and nucleating agent according to formulation dosage spare；
(2) start the high-speed mixer after putting into whole polypropylene granules in high-speed mixer, then again successively to it
Continue mixed at high speed after middle investment filler, toner and nucleating agent, obtains premix；Wherein high-speed mixer carries out high speed
Revolving speed when mixing is 800-900r/min；
(3) above-mentioned gained premix is directly entered in the main spout of double screw extruder and by the double screw extruder
Melt blending squeezes out, and obtains PP composite material.
Comparative example 2
Composition of raw materials:
With comparative example 1.
Preparation process:
(1) to weigh polypropylene granules, toner, filler and nucleating agent according to formulation dosage spare；
(2) start high-speed mixer after putting into 40wt.% polypropylene granules in high-speed mixer, then again successively to it
Continue mixed at high speed after middle investment filler, toner and nucleating agent, obtains premix；Wherein it is mixed to carry out high speed for high-speed mixer
Revolving speed when conjunction is 800-900r/min；
(3) that the remaining polypropylene granules of above-mentioned gained premix and 40wt.% are passed through weight loss type feeder respectively is accurate
It is squeezed out into the main spout of double screw extruder and through the double screw extruder melt blending, obtains polypropylene composite materials material
Material.
Comparative example 3
Composition of raw materials:
Polypropylene granules 40wt.%, polypropylene powder 40wt.%, toner 1.0wt.%, filler 18.5wt.% and nucleation
Agent 0.5wt.%.
Preparation process:
(1) to weigh polypropylene granules, polypropylene powder, toner, filler and nucleating agent according to formulation dosage spare；
(2) starting high speed is mixed after successively putting into 5wt.% polypropylene granules and whole polypropylene powders in high-speed mixer
Conjunction machine carries out mixed at high speed, continues mixed at high speed after then successively putting into filler, toner and nucleating agent thereto again, obtains
Premix；Revolving speed when wherein high-speed mixer carries out mixed at high speed is 800-900r/min；
(3) that the remaining polypropylene granules of above-mentioned gained premix and 35wt.% are passed through weight loss type feeder respectively is accurate
It is squeezed out into the main spout of double screw extruder and through the double screw extruder melt blending, obtains polypropylene composite materials material
Material.
Comparative example 4
Composition of raw materials:
With comparative example 3.
Preparation process:
(1) to weigh polypropylene granules, polypropylene powder, toner, filler and nucleating agent according to formulation dosage spare；
(2) start height after successively putting into 5wt.% polypropylene granules and 20wt.% polypropylene powder in high-speed mixer
Fast mixing machine carries out mixed at high speed, then successively put into thereto again the remaining polypropylene powder of 20wt.%, toner, filler and
Continue mixed at high speed after nucleating agent, obtains premix；Revolving speed when wherein high-speed mixer carries out mixed at high speed is 800-
900r/min；
(3) that the remaining polypropylene granules of above-mentioned gained premix and 35wt.% are passed through weight loss type feeder respectively is accurate
It is squeezed out into the main spout of double screw extruder and through the double screw extruder melt blending, obtains polypropylene composite materials material
Material.
Comparative example 5
Composition of raw materials:
With comparative example 3.
Preparation process:
(1) to weigh polypropylene granules, polypropylene powder, toner, filler and nucleating agent according to formulation dosage spare；
(2) start high-speed mixer after putting into 20wt.% polypropylene powder in high-speed mixer, then again successively to it
Continue mixed at high speed after middle investment filler, the remaining polypropylene powder of 20wt.%, toner and nucleating agent, obtains premix；
Revolving speed when wherein high-speed mixer carries out mixed at high speed is 800-900r/min；
(3) above-mentioned gained premix and whole polypropylene granules are passed through weight loss type feeder respectively and precisely enters twin-screw
It is squeezed out in the main spout of extruder and through the double screw extruder melt blending, obtains PP composite material.
Comparative example 6
Composition of raw materials:
With comparative example 3.
Preparation process:
(1) to weigh polypropylene granules, polypropylene powder, toner, filler and nucleating agent according to formulation dosage spare；
(2) start height after successively putting into 1wt.% polypropylene granules and 20wt.% polypropylene powder in high-speed mixer
Fast mixing machine carries out mixed at high speed, then successively put into thereto again filler, the remaining polypropylene powder of 20wt.%, toner and
Continue mixed at high speed after nucleating agent, obtains premix；Revolving speed when wherein high-speed mixer carries out mixed at high speed is 800-
900r/min；
(3) that the remaining polypropylene granules of above-mentioned gained premix and 39wt.% are passed through weight loss type feeder respectively is accurate
It is squeezed out into the main spout of double screw extruder and through the double screw extruder melt blending, obtains polypropylene composite materials material
Material.
It is involved in the step of above-mentioned all specific embodiments and comparative example (3) to be melted using double screw extruder
When melting blending extrusion, the technological parameter of the double screw extruder is as described below: the temperature from feed opening to mouth mold is set as one
Section is 90-110 DEG C；Two sections are 190-210 DEG C；Three sections are 210-230 DEG C；Four sections are 210-230 DEG C；Five sections are 210-230 DEG C；
Six sections are 200-220 DEG C；Seven sections are 200-220 DEG C；Eight sections are 200-220 DEG C；Nine sections are 200-220 DEG C.Head temperature setting
It is 210-230 DEG C.Screw speed is 500rpm, is granulated air-drying after extrudate cooling.
PP composite material after drying is subjected to injection molding, detection using injection molding machine under the conditions of 200-230 DEG C
Glossiness, the stability of appearance toner point situation and L value of gained sample.Wherein the test of glossiness according to GB 8807-88 into
Row measurement；Toner point is observed by the magnifying glass with light source；L value is by colour examining equipment X-rite ColorEye
7000A observes test colour table using 65D light source, and test result is referring to described in table 1.
1 specific embodiment 1-7 of table and comparative example 1-6 sample appearance toner point and L value test result
By the comparison of above-mentioned specific embodiment and comparative example it is recognised that the method for the invention optimizes product first matches
Side changes the case where pellet is used only in traditional handicraft or powder is used only, has used polypropylene granules and poly- third simultaneously
Alkene powder；Furthermore this method has adjusted mixing procedure, and emphasis has adjusted the charging sequence of pellet, powder and filler, by pellet
In batches or entirety first adds, and powder is added in two batches, filler is added between the powder being added batch-wise twice, and entire addition
Process is to add in mixed at high speed, can fully ensure that all materials mixing is uniform in this way.It is prepared by this method resulting
High-gloss polypropylene composite material is only changed by homogenous resins raw material form since the type to raw material components is without any changes
Change and charging sequence process reform, therefore can guarantee not change in mechanical performance, heat resistance of final products etc.
On the basis of, not only glossiness is high, and surface is uniform and smooth, no toner point, and the stability of color L value is preferable, in 62.5-62.7
Between fluctuate.
The above description of the embodiment is only used to help understand the method for the present invention and its core ideas.It should be pointed out that pair
For the member of ordinary skill of the art, without departing from the principle of the present invention, if can also be carried out to the present invention
Dry improvement and modification, these improvement and modification also fall into the protection scope of the claims in the present invention.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments are it will be apparent that as defined herein one for those skilled in the art
As principle can realize in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention will
It will not be intended to be limited to the embodiments shown herein, and be to fit to consistent with the principles and novel features disclosed herein
Widest scope.
Claims (10)
1. a kind of method for improving high-gloss polypropylene composite material toner point, it is characterised in that: include the following steps:
(1) to weigh polypropylene granules, polypropylene powder, toner, filler and other components according to formulation dosage spare；Wherein poly- third
Alkene pellet, polypropylene powder, toner, filler and other components account for the total matter of high-gloss polypropylene composite material of no toner point respectively
The percentage of amount are as follows: polypropylene granules 30-60wt.%, polypropylene powder 20-60wt.%, toner 0.5-3.0wt.%, filler
0-45wt.% and other components 0-3wt.%；
(2) at least 5wt.% and polypropylene powder gross mass of polypropylene granules gross mass are successively put into high-speed mixer
Start high-speed mixer after 10-90wt.% and carry out mixed at high speed, then successively puts into filler, remaining polypropylene powder thereto again
Continue mixed at high speed after material, toner and other components, obtains premix；Wherein when high-speed mixer progress mixed at high speed
Revolving speed is 400-900r/min；
(3) above-mentioned gained premix and remaining polypropylene granules are added twin-screw extrude melt blending to squeeze out, obtains nothing
The high-gloss polypropylene composite material of toner point.
2. the method according to claim 1 for improving high-gloss polypropylene composite material toner point, it is characterised in that: step
(1) melt flow rate (MFR) of polypropylene granules described in and polypropylene powder under 230 DEG C and 2.16kg pressure is 1-100g/
10min；And the partial size of the polypropylene powder is 20-80 mesh.
3. the method according to claim 1 for improving high-gloss polypropylene composite material toner point, it is characterised in that: step
(1) partial size of filler described in is 2000-5000 mesh, and the filler is talcum powder, barium sulfate, calcium carbonate, mica powder, silicon ash
At least one of stone, kaolin, silica, diatomite, asbestos and wood powder.
4. the method according to claim 1 for improving high-gloss polypropylene composite material toner point, it is characterised in that: step
(1) other components described in include nucleating agent.
5. the method according to claim 1 for improving high-gloss polypropylene composite material toner point, it is characterised in that: step
(2) it is X that the dosage for putting into polypropylene granules in high-speed mixer in for the first time, which accounts for the amount of polypropylene granules gross mass, as 5%≤X <
When 100%, premix and remaining polypropylene granules pass through weight loss type feeder respectively and enter twin-screw extrusion owner in step (3)
Spout；As X=100%, premix is directly entered twin-screw extrusion owner's spout in step (3).
6. the method according to claim 1 for improving high-gloss polypropylene composite material toner point, it is characterised in that: step
(3) the melting extrusion technological parameter of double screw extruder described in are as follows: one section 90-110 DEG C, two sections 190-210 DEG C, three sections of 210-
230 DEG C, four sections 210-230 DEG C, five sections 210-230 DEG C, six sections 200-220 DEG C, seven sections 200-220 DEG C, and head temperature is
210-230℃。
7. the method according to claim 1 for improving high-gloss polypropylene composite material toner point, it is characterised in that: step
(3) draw ratio of double screw extruder described in is (36-56): 1, and screw speed is 300-1100rpm.
8. a kind of high glaze poly- third for preparing resulting no toner point by any claim the method in claim 1 to 7
Alkene composite material, it is characterised in that: by according to the high-gloss polypropylene composite material gross mass percentages for accounting for no toner point
Following each components are prepared: polypropylene granules 30-60wt.%, polypropylene powder 20-60wt.%, toner 0.5-
3.0wt.%, filler 0-45wt.% and other components 0-3wt.%.
9. the high-gloss polypropylene composite material of no toner point according to claim 8, it is characterised in that: the polypropylene
The melt flow rate (MFR) of pellet and polypropylene powder under 230 DEG C and 2.16kg pressure is 1-100g/10min；And it is described poly-
The partial size of propylene powder is 20-80 mesh.
10. the high-gloss polypropylene composite material of no toner point according to claim 8, it is characterised in that: the filler
Partial size be 2000-5000 mesh, and the filler be talcum powder, barium sulfate, calcium carbonate, mica powder, wollastonite, kaolin, dioxy
At least one of SiClx, diatomite, asbestos and wood powder；The other components include nucleating agent.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115972426A (en) * | 2023-01-04 | 2023-04-18 | 广州汇富研究院有限公司 | System and method for preparing gas-phase silicon dioxide plastic concentrate |
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| CN103613883A (en) * | 2013-11-29 | 2014-03-05 | 中国科学院金属研究所 | Wear-resistant hard composite material using graphene as filler and preparation method thereof |
| CN106731929A (en) * | 2016-12-13 | 2017-05-31 | 完美（中国）有限公司 | One kind realizes various granule materials and the mixed uniformly technique of various powders material and its application and device |
| CN106905611A (en) * | 2017-03-20 | 2017-06-30 | 广东圆融新材料有限公司 | A kind of high glaze exempts from spray coating polypropylene composite and preparation method thereof |
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2018
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101704974A (en) * | 2009-11-05 | 2010-05-12 | 上海金发科技发展有限公司 | High-gloss polypropylene material containing carbon black colorant and preparation method thereof |
| CN103613883A (en) * | 2013-11-29 | 2014-03-05 | 中国科学院金属研究所 | Wear-resistant hard composite material using graphene as filler and preparation method thereof |
| CN106731929A (en) * | 2016-12-13 | 2017-05-31 | 完美（中国）有限公司 | One kind realizes various granule materials and the mixed uniformly technique of various powders material and its application and device |
| CN106905611A (en) * | 2017-03-20 | 2017-06-30 | 广东圆融新材料有限公司 | A kind of high glaze exempts from spray coating polypropylene composite and preparation method thereof |
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