CN102108160A - Polypropylene/nano silicon dioxide composite material for automotive bumpers and preparation method thereof - Google Patents
Polypropylene/nano silicon dioxide composite material for automotive bumpers and preparation method thereof Download PDFInfo
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- CN102108160A CN102108160A CN2009102472947A CN200910247294A CN102108160A CN 102108160 A CN102108160 A CN 102108160A CN 2009102472947 A CN2009102472947 A CN 2009102472947A CN 200910247294 A CN200910247294 A CN 200910247294A CN 102108160 A CN102108160 A CN 102108160A
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- polypropylene
- silicon dioxide
- composite material
- nano silicon
- dioxide composite
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92885—Screw or gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention relates to a polypropylene/nano silicon dioxide composite material for automotive bumpers and a preparation method thereof. The material comprises the following components in percentage by weight: 80 to 90 percent of polypropylene, 1 to 5 percent of nano silicon dioxide, 4 to 10 percent of toughening agent, 2 to 5 percent of compatilizer, 1 to 2 percent of coupling agent, 0.1 to 0.5 percent of antioxygen and 0.1 to 0.5 percent of lubricating agent. The product is obtained by processing the nano silicon dioxide with the coupling agent, filling the raw materials in a high-speed mixer to mix the raw materials and filling the mixture into a double-screw extruder for extrusion granulation. Compared with the prior art, the composite material has high rigidity and high toughness and has the advantages of compactness, glossiness, wear resistance and the like, and can be used for manufacturing parts such as automobile bumpers.
Description
Technical field
The present invention relates to a kind of matrix material and preparation method, especially relate to a kind of bumper polypropylene/nanometer silicon dioxide composite material and preparation method.
Background technology
Polypropylene (PP) is one of widely used thermoplasticity general-purpose plastics, production cost is low, and output is big, in light weight, cost performance is high, has good physicochemical property, chemical-resistant resistance, thereby be widely used in fields such as automobile, household electrical appliances, furniture, chemical industry, packing.But it is a non-polar material, be unreactiveness, with other polar materials, relatively poor as nylon (PA), polybutylene terephthalate (PBT), polycarbonate (PC) and mineral filler, the consistency of fortifying fibre, affinity, limited further popularization and application.
Work and report for the PP modification is a lot of at present, wherein the utilization of compatilizer method is very extensive, this method is to make on the PP molecular chain polar group in the grafting by different modified methods, and such grafts can improve the consistency of PP and polar polymer, mineral filler and fortifying fibre greatly.It is compatilizer that the present invention uses the oligopolymer of polypropylene grafted unsaturated acid or acid anhydrides, nano silicon is incorporated in the PP matrix, be intended to improve its cryogenic mechanics performance and dimensional stability, promote the over-all properties of PP, make it satisfy the bumper material requirements.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of have toughness and cryogenic mechanics performance bumper polypropylene/nanometer silicon dioxide composite material and preparation method preferably for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of bumper polypropylene/nanometer silicon dioxide composite material is characterized in that this material comprises following component and content (wt%):
Polypropylene 80-90;
Nano silicon 1-5;
Toughner 4-10;
Compatilizer 2-5;
Coupling agent 1-2;
Oxidation inhibitor 0.1-0.5;
Lubricant 0.1-0.5.
Described polypropylene is selected from one or both in Co-polypropylene or the block polypropylene.
The particle diameter of described nano silicon is 20-100nm.
Described toughner is selected from one or both among commercially available POE or the commercially available EPDM.
Described compatilizer is the oligopolymer of polypropylene grafted unsaturated acid or acid anhydrides, and the melting index of compatilizer is 40-150g/10min, and percentage of grafting is 0.5-1%.
Described coupling agent is a silane coupling agent, comprises commercially available KH550 or commercially available KH570.
Described oxidation inhibitor is selected from one or more in Hinered phenols antioxidant or the phosphite ester kind antioxidant, and described Hinered phenols antioxidant comprises commercially available antioxidant 1010, and described phosphite ester kind antioxidant comprises commercially available oxidation inhibitor 168.
Described lubricant comprises stearate or oleate.
A kind of bumper preparation method of polypropylene/nanometer silicon dioxide composite material is characterized in that this method may further comprise the steps:
(1) prepare raw material according to following component and content (wt%):
Polypropylene 80-90,
Nano silicon 1-5,
Toughner 4-10,
Compatilizer 2-5,
Coupling agent 1-2,
Oxidation inhibitor 0.1-0.5,
Lubricant 0.1-0.5;
(2) nano silicon pre-treatment: rice silicon-dioxide in the 10g is scattered in the toluene, and ultrasonic dispersing 30min is dissolved in dehydrated alcohol with coupling agent under the mechanical stirring, regulates the pH value to 7-8 with HCl, mixes with nano silicon then, feeds N
2And water coolant, be heated to the refluxing toluene temperature and keep 1h, be cooled to 20-25 ℃ then, centrifugation, dry back is a solvent with toluene, extracts 12h with apparatus,Soxhlet's, the nano silicon that obtains finishing dealing with, dry for standby;
(3) above-mentioned raw materials is put into high-speed mixer mixing 2-5min, discharging then;
(4) raw material that mixes is put into twin screw extruder, the rotating speed of control screw rod machine is 180-600rpm, and temperature is 180-220 ℃, and extruding pelletization obtains product.
Compared with prior art, earlier nano silicon is carried out surface treatment before the batch mixing of the present invention with suitable coupling agent, prevent the nano silicon reunion to a great extent, the oligopolymer that uses polypropylene grafted unsaturated acid or acid anhydrides then is a compatilizer, acrylic resin and particles filled dose of intermediary bonding force have been improved greatly, make introduce nano particle weighting agent nano silicon homodisperse, improved polyacrylic cryogenic mechanics performance and dimensional stability.The adding of toughner has increased the toughness and the shock-resistance of this matrix material, helps the raising of material over-all properties.The adding of antioxidant 1010 or itself and phosphite ester kind antioxidant compound prescription makes polypropylene possess good processing stability in the course of processing, avoids color and luster, performance to change.The adding of mineral lubricants such as stearates or oleic acid salt has improved flowability and the release property of polypropylene in the course of processing.Added nano silicon by easy method in acrylic resin, its effect is comparatively desirable, and the prepared material of this method has improved the some shortcomings of polypropylene body, has toughness and cryogenic mechanics performance preferably, can be used for the bumper parts.
Embodiment
The present invention is described in detail below in conjunction with specific embodiment.
Embodiment 1-3
A kind of bumper preparation method of polypropylene/nanometer silicon dioxide composite material, this method may further comprise the steps:
(1) prepares raw material according to following component and content (wt%): Co-polypropylene, nano silicon, toughner, compatilizer, coupling agent, antioxidant 1010, lubricant; Wherein the nano silicon particle diameter is 50nm, and toughner is commercially available POE, and compatilizer is polypropylene grafted acrylic acid oligopolymer, melting index is 100g/10min, and percentage of grafting is 0.8%, and coupling agent is commercially available KH550, lubricant is a sodium stearate, and each component concentration is as shown in table 1.
(2) nano silicon pre-treatment: nano silicon is scattered in the toluene, and ultrasonic dispersing 30min is dissolved in dehydrated alcohol with coupling agent under the mechanical stirring, regulates pH value to 7 with HCl, mixes with nano silicon then, feeds N
2And water coolant, be heated to the refluxing toluene temperature and keep 1h, be cooled to 25 ℃ then, centrifugation, dry back is a solvent with toluene, extracts 12h with apparatus,Soxhlet's, the nano silicon that obtains finishing dealing with, dry for standby;
(3) above-mentioned raw materials is put into high-speed mixer mixing 4min, discharging then;
(4) raw material that mixes is put into twin screw extruder, the rotating speed of control screw rod machine is 200rpm, and temperature is 200 ℃, and extruding pelletization obtains product.
Table 1
| Material name | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Polypropylene | 90 | 85 | 80 |
| Nano silicon | 1 | 3 | 5 |
| Toughner | 4 | 7 | 10 |
| Compatilizer | 3 | 3 | 3 |
| Coupling agent | 1 | 1 | 1 |
| Oxidation inhibitor | 0.5 | 0.5 | 0.5 |
| Lubricant | 0.5 | 0.5 | 0.5 |
A kind of bumper to embodiment 1-3 gained carries out the performance test contrast with polypropylene/nanometer silicon dioxide composite material, and mechanical property is tested with DIN, and test result is as shown in table 2.
Table 2
| Test event | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Tensile strength (MPa) | 29.5 | 23.7 | 27.11 |
| Notched Izod impact strength (KJ/m 2) | 6.2 | 15.1 | 20.9 |
Embodiment 4
A kind of bumper preparation method of polypropylene/nanometer silicon dioxide composite material, this method may further comprise the steps:
(1) prepares raw material according to following component and content: 80kg block polypropylene, 5kg nano silicon, 4kg toughner, 2kg compatilizer, 1kg silane coupling agent KH570,0.1kg oxidation inhibitor 168,0.5kg lubricant oleic acid sodium, wherein the nano silicon particle diameter is 20nm, toughner is the commercially available POE of 3kg, the commercially available EPDM of 1kg, compatilizer is the oligopolymer of polypropylene grafted methacrylic anhydride, melting index is 150g/10min, and percentage of grafting is 0.5%;
(2) nano silicon pre-treatment: nano silicon is scattered in the toluene, and ultrasonic dispersing 30min is dissolved in dehydrated alcohol with coupling agent under the mechanical stirring, regulates pH value to 8 with HCl, mixes with nano silicon then, feeds N
2And water coolant, be heated to the refluxing toluene temperature and keep 1h, be cooled to 20 ℃ then, centrifugation, dry back is a solvent with toluene, extracts 12h with apparatus,Soxhlet's, the nano silicon that obtains finishing dealing with, dry for standby;
(3) above-mentioned raw materials is put into high-speed mixer mixing 2min, discharging then;
(4) raw material that mixes is put into twin screw extruder, the rotating speed of control screw rod machine is 600rpm, and temperature is 180 ℃, and extruding pelletization obtains product.
Embodiment 5
A kind of bumper preparation method of polypropylene/nanometer silicon dioxide composite material, this method may further comprise the steps:
(1) prepares raw material according to following component and content: 90kg block polypropylene, 1kg nano silicon, 10kg toughner EPDM, 5kg compatilizer, 2kg silane coupling agent KH550,0.5kg oxidation inhibitor, 0.1kg magnesium stearate lubricant, wherein the nano silicon particle diameter is 100nm, compatilizer is the oligopolymer of polypropylene grafted methacrylic anhydride, melting index is 40g/10min, percentage of grafting is 1%, and oxidation inhibitor is the compound that antioxidant 1010 and oxidation inhibitor 168 were formed by weight 1: 1;
(2) nano silicon pre-treatment: nano silicon is scattered in the toluene, and ultrasonic dispersing 30min is dissolved in dehydrated alcohol with coupling agent under the mechanical stirring, regulates pH value to 8 with HCl, mixes with nano silicon then, feeds N
2And water coolant, be heated to the refluxing toluene temperature and keep 1h, be cooled to 20 ℃ then, centrifugation, dry back is a solvent with toluene, extracts 12h with apparatus,Soxhlet's, the nano silicon that obtains finishing dealing with, dry for standby;
(3) above-mentioned raw materials is put into high-speed mixer mixing 5min, discharging then;
(4) raw material that mixes is put into twin screw extruder, the rotating speed of control screw rod machine is 180rpm, and temperature is 220 ℃, and extruding pelletization obtains product.
Claims (9)
1. a bumper is characterized in that this material comprises following component and content (wt%) with polypropylene/nanometer silicon dioxide composite material:
Polypropylene 80-90;
Nano silicon 1-5;
Toughner 4-10;
Compatilizer 2-5;
Coupling agent 1-2;
Oxidation inhibitor 0.1-0.5;
Lubricant 0.1-0.5.
2. a kind of bumper according to claim 1 is characterized in that with polypropylene/nanometer silicon dioxide composite material described polypropylene is selected from one or both in Co-polypropylene or the block polypropylene.
3. a kind of bumper according to claim 1 is characterized in that with polypropylene/nanometer silicon dioxide composite material the particle diameter of described nano silicon is 20-100nm.
4. a kind of bumper according to claim 1 is characterized in that with polypropylene/nanometer silicon dioxide composite material, and described toughner is selected from one or both among commercially available POE or the commercially available EPDM.
5. a kind of bumper polypropylene/nanometer silicon dioxide composite material according to claim 1, it is characterized in that, described compatilizer is the oligopolymer of polypropylene grafted unsaturated acid or acid anhydrides, and the melting index of compatilizer is 40-150g/10min, and percentage of grafting is 0.5-1%.
6. a kind of bumper according to claim 1 is characterized in that with polypropylene/nanometer silicon dioxide composite material described coupling agent is a silane coupling agent, comprises commercially available KH550 or commercially available KH570.
7. a kind of bumper polypropylene/nanometer silicon dioxide composite material according to claim 1, it is characterized in that, described oxidation inhibitor is selected from one or more in Hinered phenols antioxidant or the phosphite ester kind antioxidant, described Hinered phenols antioxidant comprises commercially available antioxidant 1010, and described phosphite ester kind antioxidant comprises commercially available oxidation inhibitor 168.
8. a kind of bumper according to claim 1 is characterized in that with polypropylene/nanometer silicon dioxide composite material described lubricant comprises stearate or oleate.
9. a bumper is characterized in that this method may further comprise the steps with the preparation method of polypropylene/nanometer silicon dioxide composite material:
(1) prepare raw material according to following component and content (wt%):
Polypropylene 80-90,
Nano silicon 1-5,
Toughner 4-10,
Compatilizer 2-5,
Coupling agent 1-2,
Oxidation inhibitor 0.1-0.5,
Lubricant 0.1-0.5;
(2) nano silicon pre-treatment: the 10g nano silicon is scattered in the toluene, and ultrasonic dispersing 30min is dissolved in dehydrated alcohol with coupling agent under the mechanical stirring, regulate the pH value to 7-8 with HCl, mix with nano silicon then, feed N2 and water coolant, be heated to the refluxing toluene temperature and keep 1h, be cooled to 20-25 ℃ then, centrifugation, dry back is a solvent with toluene, extracts 12h with apparatus,Soxhlet's, the nano silicon that obtains finishing dealing with, dry for standby;
(3) above-mentioned raw materials is put into high-speed mixer mixing 2-5min, discharging then;
(4) raw material that mixes is put into twin screw extruder, the rotating speed of control screw rod machine is 180-600rpm, and temperature is 180-220 ℃, and extruding pelletization obtains product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102472947A CN102108160A (en) | 2009-12-28 | 2009-12-28 | Polypropylene/nano silicon dioxide composite material for automotive bumpers and preparation method thereof |
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|---|---|---|---|
| CN2009102472947A CN102108160A (en) | 2009-12-28 | 2009-12-28 | Polypropylene/nano silicon dioxide composite material for automotive bumpers and preparation method thereof |
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| CN102108160A true CN102108160A (en) | 2011-06-29 |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585363A (en) * | 2012-01-20 | 2012-07-18 | 大连工业大学 | Modified polypropylene compound material and preparation method thereof |
| CN104292638A (en) * | 2014-10-20 | 2015-01-21 | 清华大学 | Preparation method of recyclable cable insulation material |
| CN104446333A (en) * | 2014-12-08 | 2015-03-25 | 南京工业大学 | Method for preparing PP fiber-enhanced silica gel material |
| CN105037951A (en) * | 2015-06-12 | 2015-11-11 | 常州大学 | Inorganic rigid particle three-element blend toughened system RRP (polypropylene random) tube and preparation method thereof |
| CN105237884A (en) * | 2015-11-23 | 2016-01-13 | 南通容润汽车配件有限公司 | Preparation method of toughening modification polypropylene foamed plastic |
| CN105885228A (en) * | 2016-05-16 | 2016-08-24 | 陕西理工学院 | Method for preparing silicon dioxide modified polypropylene composite material |
| CN106084452A (en) * | 2016-06-07 | 2016-11-09 | 苏州禾昌聚合材料股份有限公司 | A kind of high-ductility composite material and preparation method thereof |
| CN106750979A (en) * | 2017-01-19 | 2017-05-31 | *** | A kind of bumper poly-dopamine PP composite material and preparation method thereof |
| CN106751728A (en) * | 2016-12-30 | 2017-05-31 | 太仓冠联高分子材料有限公司 | A kind of bumper composition |
| JP2017193613A (en) * | 2016-04-19 | 2017-10-26 | 国立研究開発法人産業技術総合研究所 | Polypropylene resin composition |
| CN107459713A (en) * | 2017-07-27 | 2017-12-12 | 中广核俊尔新材料有限公司 | PP composite material that a kind of proof stress turns white and its preparation method and application |
| CN109836802A (en) * | 2019-02-22 | 2019-06-04 | 福鼎市肯普聚氨酯科技发展有限公司 | A kind of composition, impact resistance polymer composite and preparation method thereof |
| CN111875884A (en) * | 2020-07-31 | 2020-11-03 | 海信（山东）空调有限公司 | Filter screen and air conditioner |
| CN112063049A (en) * | 2020-09-02 | 2020-12-11 | 慈溪金轮复合纤维有限公司 | Cold-resistant polypropylene and preparation method thereof |
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2009
- 2009-12-28 CN CN2009102472947A patent/CN102108160A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585363B (en) * | 2012-01-20 | 2014-02-12 | 大连工业大学 | Modified polypropylene compound material and preparation method thereof |
| CN102585363A (en) * | 2012-01-20 | 2012-07-18 | 大连工业大学 | Modified polypropylene compound material and preparation method thereof |
| CN104292638A (en) * | 2014-10-20 | 2015-01-21 | 清华大学 | Preparation method of recyclable cable insulation material |
| CN104292638B (en) * | 2014-10-20 | 2016-08-17 | 清华大学 | A kind of preparation method of callable cable insulation material |
| CN104446333A (en) * | 2014-12-08 | 2015-03-25 | 南京工业大学 | Method for preparing PP fiber-enhanced silica gel material |
| CN105037951A (en) * | 2015-06-12 | 2015-11-11 | 常州大学 | Inorganic rigid particle three-element blend toughened system RRP (polypropylene random) tube and preparation method thereof |
| CN105237884A (en) * | 2015-11-23 | 2016-01-13 | 南通容润汽车配件有限公司 | Preparation method of toughening modification polypropylene foamed plastic |
| JP2017193613A (en) * | 2016-04-19 | 2017-10-26 | 国立研究開発法人産業技術総合研究所 | Polypropylene resin composition |
| CN105885228A (en) * | 2016-05-16 | 2016-08-24 | 陕西理工学院 | Method for preparing silicon dioxide modified polypropylene composite material |
| CN106084452A (en) * | 2016-06-07 | 2016-11-09 | 苏州禾昌聚合材料股份有限公司 | A kind of high-ductility composite material and preparation method thereof |
| CN106751728A (en) * | 2016-12-30 | 2017-05-31 | 太仓冠联高分子材料有限公司 | A kind of bumper composition |
| CN106750979A (en) * | 2017-01-19 | 2017-05-31 | *** | A kind of bumper poly-dopamine PP composite material and preparation method thereof |
| CN107459713A (en) * | 2017-07-27 | 2017-12-12 | 中广核俊尔新材料有限公司 | PP composite material that a kind of proof stress turns white and its preparation method and application |
| CN109836802A (en) * | 2019-02-22 | 2019-06-04 | 福鼎市肯普聚氨酯科技发展有限公司 | A kind of composition, impact resistance polymer composite and preparation method thereof |
| CN111875884A (en) * | 2020-07-31 | 2020-11-03 | 海信（山东）空调有限公司 | Filter screen and air conditioner |
| CN112063049A (en) * | 2020-09-02 | 2020-12-11 | 慈溪金轮复合纤维有限公司 | Cold-resistant polypropylene and preparation method thereof |
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Application publication date: 20110629 |