CN109735041A - A kind of non-glass fiber enhancing lower shrinkage filled polypropylene and preparation method thereof - Google Patents
A kind of non-glass fiber enhancing lower shrinkage filled polypropylene and preparation method thereof Download PDFInfo
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Abstract
The invention belongs to filled polypropylene preparation technical fields, and in particular to a kind of non-glass fiber enhancing lower shrinkage filled polypropylene and preparation method thereof.The invention discloses a kind of non-glass fibers to enhance lower shrinkage filled polypropylene, its component includes that high melting means copolymer polypropylene (PP1), HI high impact eutectic refer to copolymer polypropylene (PP2), toughener, filler A, filler B, antioxidant, irgasfos 168, Lubricate EBS and black color masterbatch 2014, wherein the content of each component are as follows: high melting means copolymer polypropylene (PP1): 40~80 parts；HI high impact eutectic refers to copolymer polypropylene (PP2): 10~50 parts；Toughener: 2~10 parts；Filler A:2~10 part；Filler B:2~10 part；Antioxidant 1010: 0.1~1 part；Irgasfos 168: 0.1~1 part；Lubricate EBS: 0.1~1 part；Black color masterbatch 2014:1~2 part；The poly- polypropylene (PP1), HI high impact eutectic refer to that the total number of copolymer polypropylene (PP2), toughener, filler A and filler B are 100 parts.
Description
Technical field
The invention belongs to filled polypropylene preparation technical fields, and in particular to a kind of non-glass fiber enhancing lower shrinkage filling
Polypropylene and preparation method thereof.
Background technique
Polypropylene because have density small (about 0.9g/cm3), price is low, processing forming is good and comprehensive performance well etc. it is excellent
Point is widely used in inner and outer decorative parts of automobile and electronics, the shell of electric equipment products etc., is the most fast general thermoplastic of current growth rate
One of property plastics.
But pure PP shrinking percentage is larger, and dimensional stability is bad, and rigidity is insufficient, usual people by be added talcum powder, calcium powder,
The inorganic matters such as glass fibre are enhanced or are reduced the modification of contraction, and talcum powder, calcium powder are not very to the improvement of PP shrinking percentage
Obviously, glass fibre relative to the improvement to shrinking percentage clearly, but moulding processability is poor, and products surface quality is poor, no
Conducive to being widely used.
The prior art generally passes through continuity glass fibre and is squeezed by being kneaded after the shearing of double screw extruder gear block with resin
It is granulated out, it is extremely serious to the abrasion of screw rod in the process of shearing glass fibre, and glass fibre unit price is costly, cost is difficult
With control；
This technology reduces the shrinking percentage of material, not only low in cost but also processing by the way that natural fiber filler is added
Simply, small to the degree of wear of equipment, while material height in equipment can be shortened in the case where guaranteeing material melting effect
Warm residence time improves yield.
Summary of the invention
Aiming at the problem that above-mentioned background technique is proposed, the purpose of the present invention is: it is intended to provide a kind of non-glass fiber increasing
Strong lower shrinkage filled polypropylene and preparation method thereof.
To realize the above-mentioned technical purpose, The technical solution adopted by the invention is as follows:
A kind of non-glass fiber enhancing lower shrinkage filled polypropylene, component include high melting means copolymer polypropylene (PP1), height
Impact eutectic refer to copolymer polypropylene (PP2), toughener, filler A, filler B, antioxidant, irgasfos 168, Lubricate EBS and
Black color masterbatch 2014, wherein the content of each component are as follows:
High melting means copolymer polypropylene (PP1): 40~80 parts；
HI high impact eutectic refers to copolymer polypropylene (PP2): 10~50 parts；
Toughener: 2~10 parts；
Filler A:2~10 part；
Filler B:2~10 part；
Antioxidant 1010: 0.1~1 part；
Irgasfos 168: 0.1~1 part；
Lubricate EBS: 0.1~1 part；
Black color masterbatch 2014:1~2 part；
The poly- polypropylene (PP1), HI high impact eutectic refer to copolymer polypropylene (PP2), toughener, filler A and filler B
Total number be 100 parts.
As a preferred solution of the present invention, the high melting means copolymer polypropylene is that the block copolymerization of hydrogen-regulating method production is poly-
Propylene, using Sino-Korean wuhan petrochemical industry trade mark SK-K7227H.
As a preferred solution of the present invention, the HI high impact eutectic refers to that copolymer polypropylene is poly- for coal chemical industry block copolymerization
Propylene, using the 2500H of the peaceful coal of Shenhua.
As a preferred solution of the present invention, the toughener is ethylene-octene thermoplastic elastomer (TPE), selects Tao Shiization
Learn the trade mark 58710.
As a preferred solution of the present invention, the filler A is the talcum powder of 2500 mesh, silicone content 55~60%.
As a preferred solution of the present invention, the filler B is alkali magnesium sulfate crystal whisker.
As a preferred solution of the present invention, the antioxidant 1010 is four [β-(3,5- di-tert-butyl 4- hydroxy benzenes
Base) propionic acid] pentaerythritol ester, trade name Irganox 1010, BASF Aktiengesellschaft's production.
As a preferred solution of the present invention, the irgasfos 168 is three (2,4- di-tert-butylphenol) phosphite esters, quotient
Name of an article Irganox 168, BASF Aktiengesellschaft's production.
As a preferred solution of the present invention, the Lubricate EBS is ethylene bis stearamide, choice of powder of the present invention
Shape EBS.
A kind of preparation method of non-glass fiber enhancing lower shrinkage filled polypropylene, includes the following steps,
Step 1: by based on number, by described 40~80 parts high melting means copolymer polypropylene (PP1), 10~50 parts of HI high impacts
Eutectic refer to copolymer polypropylene (PP2), 2~10 parts of toughener, 2~10 parts of filler A, 2~10 parts of filler B, 0.1~1 part it is anti-
After 1010,0.1~1 parts of irgasfos 168s of oxygen agent, 0.1~1 part of Lubricate EBS and 1~2 part of 2014 accurate weighing of black color masterbatch,
70~80 DEG C are pre-dried 2 hours, wherein poly- polypropylene (PP1), HI high impact eutectic refer to copolymer polypropylene (PP2), toughener, fill out
The total number for filling object A and filler B is 100 parts.
Step 2: the material after drying is added in high-speed mixer by the step 1 and mixes 1~4min, then will be mixed
It closes material and double screw extruder is added, filler B is added by side feed material in the 5th section of barrel, is melted and is squeezed by double screw extruder
Cooling after out, dry, pelletizing up at；Wherein double screw extruder uses the SHJ-35 type twin-screw of Nanjing Ju Li company production
Extruder, each section of parameter setting are as follows: 170 DEG C of area's temperature, two 180 DEG C of area's temperature, three 190 DEG C of area's temperature, four Qu Wendu
200 DEG C, five 210 DEG C of area's temperature, six 215 DEG C of area's temperature, seven 210 DEG C of area's temperature, eight 210 DEG C of area's temperature, nine 210 DEG C of area's temperature,
Ten 215 DEG C of area's temperature, 215 DEG C of head temperature, 340 revs/min of screw speed.
Beneficial effects of the present invention:
The present invention refers to that copolymer polypropylene (PP2) for matrix, passes through with high melting means copolymer polypropylene (PP1) and HI high impact eutectic
Alkali magnesium sulfate crystal whisker filler is added, so that the shrinking percentage of filled polypropylene reduces, when alkali magnesium sulfate crystal whisker filler
When dosage increases to a certain amount of, shrinking percentage tends towards stability, the collective effect shrinking percentage of the filler by the way that toughener is added
It further decreases, to obtain shrinking percentage more better than glass fiber reinforcement PP, and the invention product surface works well, relatively
Than glass fiber reinforcement PP, production cost is lower.
Specific embodiment
In order to make those skilled in the art that the present invention may be better understood, below by embodiment to the technology of the present invention
Scheme further illustrates.
Embodiment one
A kind of preparation method of non-glass fiber enhancing lower shrinkage filled polypropylene, includes the following steps,
Step 1: by based on number, described 65 parts high melting means copolymer polypropylene (PP1), 10 parts of HI high impact eutectics are referred to altogether
Poly- polypropylene (PP2), 25 parts of filler A, 0.1 part of antioxidant 1010,0.2 part of irgasfos 168,0.3 part of Lubricate EBS and 2 parts
It after 2014 accurate weighing of black color masterbatch, is pre-dried at 70~80 DEG C 2 hours, wherein poly- polypropylene (PP1), HI high impact eutectic refer to
Copolymer polypropylene (PP2), toughener, filler A and filler B total number be 100 parts.
Step 2: the material after drying is added in high-speed mixer by the step 1 and mixes 1~4min, then will be mixed
It closes material and double screw extruder is added, filler B is added by side feed material in the 5th section of barrel, is melted and is squeezed by double screw extruder
Cooling after out, dry, pelletizing up at；Wherein double screw extruder uses the SHJ-35 type twin-screw of Nanjing Ju Li company production
Extruder, each section of parameter setting are as follows: 170 DEG C of area's temperature, two 180 DEG C of area's temperature, three 190 DEG C of area's temperature, four Qu Wendu
200 DEG C, five 210 DEG C of area's temperature, six 215 DEG C of area's temperature, seven 210 DEG C of area's temperature, eight 210 DEG C of area's temperature, nine 210 DEG C of area's temperature,
Ten 215 DEG C of area's temperature, 215 DEG C of head temperature, 340 revs/min of screw speed.
Embodiment two
A kind of preparation method of non-glass fiber enhancing lower shrinkage filled polypropylene, includes the following steps,
Step 1: by based on number, described 65 parts high melting means copolymer polypropylene (PP1), 10 parts of HI high impact eutectics are referred to altogether
Poly- polypropylene (PP2), 23 parts of filler A, 2 parts of filler B, 0.1 part of antioxidant 1010,0.2 part of irgasfos 168,0.3 part of lubrication
It after agent EBS and 2 parts of 2014 accurate weighings of black color masterbatch, is pre-dried at 70~80 DEG C 2 hours, wherein poly- polypropylene (PP1), high
Impact eutectic refers to that the total number of copolymer polypropylene (PP2), toughener, filler A and filler B are 100 parts.
Step 2: the material after drying is added in high-speed mixer by the step 1 and mixes 1~4min, then will be mixed
It closes material and double screw extruder is added, filler B is added by side feed material in the 5th section of barrel, is melted and is squeezed by double screw extruder
Cooling after out, dry, pelletizing up at；Wherein double screw extruder uses the SHJ-35 type twin-screw of Nanjing Ju Li company production
Extruder, each section of parameter setting are as follows: 170 DEG C of area's temperature, two 180 DEG C of area's temperature, three 190 DEG C of area's temperature, four Qu Wendu
200 DEG C, five 210 DEG C of area's temperature, six 215 DEG C of area's temperature, seven 210 DEG C of area's temperature, eight 210 DEG C of area's temperature, nine 210 DEG C of area's temperature,
Ten 215 DEG C of area's temperature, 215 DEG C of head temperature, 340 revs/min of screw speed.
Embodiment three
A kind of preparation method of non-glass fiber enhancing lower shrinkage filled polypropylene, includes the following steps,
Step 1: by based on number, described 65 parts high melting means copolymer polypropylene (PP1), 10 parts of HI high impact eutectics are referred to altogether
Poly- polypropylene (PP2), 20 parts of filler A, 5 parts of filler B, 0.1 part of antioxidant 1010,0.2 part of irgasfos 168,0.3 part of lubrication
It after agent EBS and 2 parts of 2014 accurate weighings of black color masterbatch, is pre-dried at 70~80 DEG C 2 hours, wherein poly- polypropylene (PP1), high
Impact eutectic refers to that the total number of copolymer polypropylene (PP2), toughener, filler A and filler B are 100 parts.
Step 2: the material after drying is added in high-speed mixer by the step 1 and mixes 1~4min, then will be mixed
It closes material and double screw extruder is added, filler B is added by side feed material in the 5th section of barrel, is melted and is squeezed by double screw extruder
Cooling after out, dry, pelletizing up at；Wherein double screw extruder uses the SHJ-35 type twin-screw of Nanjing Ju Li company production
Extruder, each section of parameter setting are as follows: 170 DEG C of area's temperature, two 180 DEG C of area's temperature, three 190 DEG C of area's temperature, four Qu Wendu
200 DEG C, five 210 DEG C of area's temperature, six 215 DEG C of area's temperature, seven 210 DEG C of area's temperature, eight 210 DEG C of area's temperature, nine 210 DEG C of area's temperature,
Ten 215 DEG C of area's temperature, 215 DEG C of head temperature, 340 revs/min of screw speed.
Example IV
A kind of preparation method of non-glass fiber enhancing lower shrinkage filled polypropylene, includes the following steps,
Step 1: by based on number, described 65 parts high melting means copolymer polypropylene (PP1), 10 parts of HI high impact eutectics are referred to altogether
Poly- polypropylene (PP2), 17 parts of filler A, 8 parts of filler B, 0.1 part of antioxidant 1010,0.2 part of irgasfos 168,0.3 part of lubrication
It after agent EBS and 2 parts of 2014 accurate weighings of black color masterbatch, is pre-dried at 70~80 DEG C 2 hours, wherein poly- polypropylene (PP1), high
Impact eutectic refers to that the total number of copolymer polypropylene (PP2), toughener, filler A and filler B are 100 parts.
Step 2: the material after drying is added in high-speed mixer by the step 1 and mixes 1~4min, then will be mixed
It closes material and double screw extruder is added, filler B is added by side feed material in the 5th section of barrel, is melted and is squeezed by double screw extruder
Cooling after out, dry, pelletizing up at；Wherein double screw extruder uses the SHJ-35 type twin-screw of Nanjing Ju Li company production
Extruder, each section of parameter setting are as follows: 170 DEG C of area's temperature, two 180 DEG C of area's temperature, three 190 DEG C of area's temperature, four Qu Wendu
200 DEG C, five 210 DEG C of area's temperature, six 215 DEG C of area's temperature, seven 210 DEG C of area's temperature, eight 210 DEG C of area's temperature, nine 210 DEG C of area's temperature,
Ten 215 DEG C of area's temperature, 215 DEG C of head temperature, 340 revs/min of screw speed.
Embodiment five
A kind of preparation method of non-glass fiber enhancing lower shrinkage filled polypropylene, includes the following steps,
Step 1: by based on number, described 65 parts high melting means copolymer polypropylene (PP1), 10 parts of HI high impact eutectics are referred to altogether
Poly- polypropylene (PP2), 15 parts of filler A, 10 parts of filler B, 0.1 part of antioxidant 1010,0.2 part of irgasfos 168,0.3 part of profit
After lubrication prescription EBS and 2 parts of 2014 accurate weighings of black color masterbatch, it is pre-dried at 70~80 DEG C 2 hours, wherein poly- polypropylene (PP1),
HI high impact eutectic refers to that the total number of copolymer polypropylene (PP2), toughener, filler A and filler B are 100 parts.
Step 2: the material after drying is added in high-speed mixer by the step 1 and mixes 1~4min, then will be mixed
It closes material and double screw extruder is added, filler B is added by side feed material in the 5th section of barrel, is melted and is squeezed by double screw extruder
Cooling after out, dry, pelletizing up at；Wherein double screw extruder uses the SHJ-35 type twin-screw of Nanjing Ju Li company production
Extruder, each section of parameter setting are as follows: 170 DEG C of area's temperature, two 180 DEG C of area's temperature, three 190 DEG C of area's temperature, four Qu Wendu
200 DEG C, five 210 DEG C of area's temperature, six 215 DEG C of area's temperature, seven 210 DEG C of area's temperature, eight 210 DEG C of area's temperature, nine 210 DEG C of area's temperature,
Ten 215 DEG C of area's temperature, 215 DEG C of head temperature, 340 revs/min of screw speed.
Embodiment six
A kind of preparation method of non-glass fiber enhancing lower shrinkage filled polypropylene, includes the following steps,
Step 1: by based on number, described 60 parts high melting means copolymer polypropylene (PP1), 10 parts of HI high impact eutectics are referred to altogether
Poly- polypropylene (PP2), 5 parts of toughener, 15 parts of filler A, 10 parts of filler B, 0.1 part of antioxidant 1010,0.2 part of antioxidant
168, it after 0.3 part of Lubricate EBS and 2 parts of 2014 accurate weighings of black color masterbatch, is pre-dried at 70~80 DEG C 2 hours, wherein gathering
Polypropylene (PP1), HI high impact eutectic refer to that the total number of copolymer polypropylene (PP2), toughener, filler A and filler B are 100
Part.
Step 2: the material after drying is added in high-speed mixer by the step 1 and mixes 1~4min, then will be mixed
It closes material and double screw extruder is added, filler B is added by side feed material in the 5th section of barrel, is melted and is squeezed by double screw extruder
Cooling after out, dry, pelletizing up at；Wherein double screw extruder uses the SHJ-35 type twin-screw of Nanjing Ju Li company production
Extruder, each section of parameter setting are as follows: 170 DEG C of area's temperature, two 180 DEG C of area's temperature, three 190 DEG C of area's temperature, four Qu Wendu
200 DEG C, five 210 DEG C of area's temperature, six 215 DEG C of area's temperature, seven 210 DEG C of area's temperature, eight 210 DEG C of area's temperature, nine 210 DEG C of area's temperature,
Ten 215 DEG C of area's temperature, 215 DEG C of head temperature, 340 revs/min of screw speed.
The block that the high melting means copolymer polypropylene used described in above-described embodiment one to embodiment six produces for hydrogen-regulating method
Copolymer polypropylene, using Sino-Korean wuhan petrochemical industry trade mark SK-K7227H；HI high impact eutectic refers to that copolymer polypropylene is total for coal chemical industry block
Poly- polypropylene, using the 2500H of the peaceful coal of Shenhua；Toughener is ethylene-octene thermoplastic elastomer (TPE), selects the DOW Chemical trade mark
58710；Filler A is the talcum powder of 2500 mesh, silicone content 55~60%；Filler B is alkali magnesium sulfate crystal whisker；Antioxidant
1010 be four [β-(3,5- di-tert-butyl 4- hydroxy phenyl) propionic acid] pentaerythritol esters, trade name Irganox 1010, Germany bar
The production of Si Fu company；Irgasfos 168 is three (2,4- di-tert-butylphenol) phosphite esters, trade name Irganox 168, German Bath
The production of husband company；Lubricate EBS is ethylene bis stearamide, choice of powder shape EBS of the present invention.
The filled polypropylene particle that above-described embodiment one to embodiment six obtains is dried into 2-3 in 70-80 DEG C of baking material bucket
Hour, dried non-glass fiber enhancing lower shrinkage filled polypropylene particle is molded into mark on 80 tons of injection molding machine
Quasi- national standard batten；
The filled polypropylene that above-described embodiment one to embodiment six is obtained carries out tensile strength, bending strength, bending die
The performances such as amount, notch impact strength, shrinking percentage are tested, and table 1 is obtained；
Table 1
In table 1, notch impact strength is executed by GB/T 1843, and specimen size is 80 × 10 × 4mm, and test equipment is to hold
The radial-boom impact tester that moral gold is built；Tensile strength performance test by GB/T 1040 execute, specimen size be 150 × 10 ×
4mm, test equipment are the electronic type universal testing machine that Chengde gold is built, tensile speed 50mm/min；Bending strength performance test
It is carried out by GB/T 9341, specimen size is 80 × 10 × 4mm, rate of bending 2mm/min, span 64mm, and test equipment is
The electronic type universal testing machine that Chengde gold is built；Molding shrinkage is tested according to ASTM-D95.
It can be seen from Table 1 that be substantially reduced as seen through the table with the addition shrinking percentage of filler B, with filling out
The increase shrinking percentage presentation for filling object B dosage first reduces to tend towards stability afterwards, with the addition of toughener and the collective effect of filler
Shrinking percentage further decreases, and the shrinking percentage of case study on implementation six has been closer to the shrinking percentage of glass fiber reinforcement PP, and the invention
Product surface works well.
Above-described embodiment is merely exemplary to illustrate the principle of the present invention and its effect, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, all those of ordinary skill in the art are completed without departing from the spirit and technical ideas disclosed in the present invention
All equivalent modifications or change, should be covered by the claims of the present invention.
Claims (10)
1. a kind of non-glass fiber enhances lower shrinkage filled polypropylene, it is characterised in that: its component includes high melting means copolymerization poly- third
Alkene (PP1), HI high impact eutectic refer to copolymer polypropylene (PP2), toughener, filler A, filler B, antioxidant, irgasfos 168,
Lubricate EBS and black color masterbatch 2014, wherein the content of each component are as follows:
High melting means copolymer polypropylene (PP1): 40~80 parts；
HI high impact eutectic refers to copolymer polypropylene (PP2): 10~50 parts；
Toughener: 2~10 parts；
Filler A:2~10 part；
Filler B:2~10 part；
Antioxidant 1010: 0.1~1 part；
Irgasfos 168: 0.1~1 part；
Lubricate EBS: 0.1~1 part；
Black color masterbatch 2014:1~2 part；
The poly- polypropylene (PP1), HI high impact eutectic refer to that copolymer polypropylene (PP2), toughener, filler A and filler B's is total
Number is 100 parts.
2. a kind of non-glass fiber according to claim 1 enhances lower shrinkage filled polypropylene, it is characterised in that: the height
Melting means copolymer polypropylene is the block copolymerization polypropylene of hydrogen-regulating method production, using Sino-Korean wuhan petrochemical industry trade mark SK-K7227H.
3. a kind of non-glass fiber according to claim 1 enhances lower shrinkage filled polypropylene, it is characterised in that: the height
Impact eutectic refers to that copolymer polypropylene is coal chemical industry block copolymerization polypropylene, using the 2500H of the peaceful coal of Shenhua.
4. a kind of non-glass fiber according to claim 1 enhances lower shrinkage filled polypropylene, it is characterised in that: the increasing
Tough dose is ethylene-octene thermoplastic elastomer (TPE), selects the DOW Chemical trade mark 58710.
5. a kind of non-glass fiber according to claim 1 enhances lower shrinkage filled polypropylene, it is characterised in that: described to fill out
Fill the talcum powder that object A is 2500 mesh, silicone content 55~60%.
6. a kind of non-glass fiber according to claim 1 enhances lower shrinkage filled polypropylene, it is characterised in that: described to fill out
Filling object B is alkali magnesium sulfate crystal whisker.
7. a kind of non-glass fiber according to claim 1 enhances lower shrinkage filled polypropylene, it is characterised in that: described anti-
Oxygen agent 1010 is four [β-(3,5- di-tert-butyl 4- hydroxy phenyl) propionic acid] pentaerythritol esters, trade name Irganox
1010, BASF Aktiengesellschaft's production.
8. a kind of non-glass fiber according to claim 1 enhances lower shrinkage filled polypropylene, it is characterised in that: described anti-
Oxygen agent 168 is three (2,4- di-tert-butylphenol) phosphite esters, trade name Irganox 168, BASF Aktiengesellschaft's life
It produces.
9. a kind of non-glass fiber according to claim 1 enhances lower shrinkage filled polypropylene, it is characterised in that: the profit
Lubrication prescription EBS is ethylene bis stearamide, choice of powder shape EBS of the present invention.
10. a kind of preparation side of non-glass fiber enhancing lower shrinkage filled polypropylene as claimed in any one of claims 1 to 9 wherein
Method, it is characterised in that: include the following steps,
Step 1: by based on number, by described 40~80 parts high melting means copolymer polypropylene (PP1), 10~50 parts of HI high impact eutectics
Refer to copolymer polypropylene (PP2), 2~10 parts of toughener, 2~10 parts of filler A, 2~10 parts of filler B, 0.1~1 part of antioxidant
1010, after 0.1~1 part of irgasfos 168,0.1~1 part of Lubricate EBS and 1~2 part of 2014 accurate weighing of black color masterbatch, 70
~80 DEG C are pre-dried 2 hours, wherein poly- polypropylene (PP1), HI high impact eutectic refer to copolymer polypropylene (PP2), toughener, fill out
The total number for filling object A and filler B is 100 parts；
Step 2: the material after drying is added in high-speed mixer by the step 1 and mixes 1~4min, then by mixture
Double screw extruder is added in material, and filler B is added by side feed material in the 5th section of barrel, after double screw extruder melting extrusion
Cooling, dry, pelletizing up at；Wherein double screw extruder uses the SHJ-35 type twin-screw extrusion of Nanjing Ju Li company production
Machine, each section of parameter setting are as follows: 170 DEG C of area's temperature, two 180 DEG C of area's temperature, three 190 DEG C of area's temperature, four area's temperature 200
DEG C, five 210 DEG C of area's temperature, six 215 DEG C of area's temperature, seven 210 DEG C of area's temperature, eight 210 DEG C of area's temperature, nine 210 DEG C of area's temperature, tenth area
215 DEG C of temperature, 215 DEG C of head temperature, 340 revs/min of screw speed.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112759845A (en) * | 2020-12-24 | 2021-05-07 | 重庆会通科技有限公司 | Polypropylene composite material and preparation method and application thereof |
| CN113321873A (en) * | 2020-02-28 | 2021-08-31 | 合肥杰事杰新材料股份有限公司 | Low-shrinkage high-toughness modified polypropylene material and preparation method thereof |
| CN114230915A (en) * | 2021-12-23 | 2022-03-25 | 海信（山东）空调有限公司 | Polypropylene material, preparation method thereof, chassis and air conditioner |
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| CN112759845A (en) * | 2020-12-24 | 2021-05-07 | 重庆会通科技有限公司 | Polypropylene composite material and preparation method and application thereof |
| CN114230915A (en) * | 2021-12-23 | 2022-03-25 | 海信（山东）空调有限公司 | Polypropylene material, preparation method thereof, chassis and air conditioner |
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