CN101469093B - Ultralong unit extension glass fiber reinforced polypropylene composite material - Google Patents
Ultralong unit extension glass fiber reinforced polypropylene composite material Download PDFInfo
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- CN101469093B CN101469093B CN2007101729184A CN200710172918A CN101469093B CN 101469093 B CN101469093 B CN 101469093B CN 2007101729184 A CN2007101729184 A CN 2007101729184A CN 200710172918 A CN200710172918 A CN 200710172918A CN 101469093 B CN101469093 B CN 101469093B
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- polypropylene
- composite material
- fiber reinforced
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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
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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
- B29C48/03—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
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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
- B29C48/92—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
- B29C2948/92704—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
- B29C2948/92895—Barrel or housing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to glass fiber reinforced polypropylene composite material with the super-long elongation. The glass fiber reinforced polypropylene composite material is characterized in that the composite material comprises the following components: 10 to 50 percent of homopolymerization polypropylene, 20 to 40 percent of copolymerization polypropylene, 10 to 40 percent of polyethylene, 0.5 to 5 percent grafted polypropylene, 10 to 40 percent of glass fibers, 0.1 to 2 percent of composite antioxidant, and 0.1 to 2 percent of other additives; and a preparation method for the composite material comprises the following steps: dryly mixing the homopolymerization polypropylene, the copolymerization polypropylene, the polyethylene, the grated polypropylene, the composite antioxidant and the other additives in a high speed mixer for 3 to 5 minutes according to the proportion; and then placing the mixed raw materials in a double screw extruder, and carrying out the melted extrusion and granulation at 160 to 250 DEG C. The prepared composite material has not only the super-long elongation, but also other excellent physical mechanical properties. In addition, the composite material also has the reduced cost.
Description
Technical field
The present invention relates to a kind of making method of glass fiber reinforced polypropylene composite material, especially a kind of preparation of ultralong unit extension glass fiber reinforced polypropylene composite material belongs to the polymer composite field.
Background technology
Polypropylene material has higher rigidity and low relative density, high tensile, good stress cracking resistance and chemical proofing, therefore is widely used in fields such as automobile, household electrical appliances, medical treatment.And polypropylene material is after being strengthened by glass fibre, and its every physical and mechanical properties is able to further raising as intensity, rigidity, dimension stability and resistance toheat, is enough to the higher engineering plastics competition of cost in many Application Areass.Yet a shortcoming of glass fiber reinforced polypropylene material is exactly that its tension set is very little, generally between 2～5%, causes in use easily brittle failure of material, can not repeatedly bend.
The polypropylene that does not strengthen or the polypropylene bending performance of talc are good, tension set is high, but intensity, rigidity and thermotolerance all do not have the height of glass-reinforced polypropylene, so it is more difficult to coordinate the Performance Ratio of this two aspect, and about this research and discussion on the one hand, in the middle of relevant documents and materials still for play-by-play was targetedly arranged.
For this reason, develop the glass fiber reinforced polypropylene composite material of a kind of Gao Gang of having, heat-resisting, these requirements of high-elongation, to satisfy the actual needs of each Application Areas, just become an important topic of the industry.
Summary of the invention
Purpose of the present invention: a kind of ultralong unit extension glass fiber reinforced polypropylene composite material is provided, and introduces simultaneously the preparation method of this Gao Gang, heat-resisting, ultralong unit extension glass fiber reinforced polypropylene composite material.
This ultralong unit extension glass fiber reinforced polypropylene composite material forms by the preparation of raw material of following weight percent:
Homo-polypropylene 10～50
Co-polypropylene 20～40
Polyethylene 10～40
Graft polypropylene 0.5～5
Glass fibre 10～40
Composite antioxidant 0.1～2
Other auxiliary agents 0.1～2
A kind of ultralong unit extension glass fiber reinforced polypropylene composite material of the present invention, it is characterized in that, described homo-polypropylene relative density is 0.89～0.92, at 230 ℃, 2.16 the melt flow rate (MFR) under the kilogram load is 0.5～10g/10min, is preferably 1.0～6g/10min.
A kind of ultralong unit extension glass fiber reinforced polypropylene composite material of the present invention, it is characterized in that, described Co-polypropylene relative density is 0.89～0.92, at 230 ℃, 2.16 the melt flow rate (MFR) under the kilogram load is 0.5～30g/10min, is preferably 5～15g/10min.
A kind of ultralong unit extension glass fiber reinforced polypropylene composite material of the present invention, it is characterized in that, described polyethylene relative density is 0.92～0.96, at 190 ℃, 2.16 the melt flow rate (MFR) under the kilogram load is 0.5～25g/10min, is preferably 2～13g/10min.
A kind of ultralong unit extension glass fiber reinforced polypropylene composite material of the present invention is characterized in that, described graft polypropylene be maleic anhydride by way grafting on polypropylene of melting, percentage of grafting is 0.1～1.5%, preferred 0.3～0.9%.
A kind of ultralong unit extension glass fiber reinforced polypropylene composite material of the present invention, it is characterized in that, described glass fibre is a kind of in alkali free glass fibre, medium-alkali glass fibre, high-strength glass fibre, and its Fibre diameter is 5～24 μ m, is preferably 10～19 μ m.
A kind of ultralong unit extension glass fiber reinforced polypropylene composite material of the present invention is characterized in that, described composite antioxidant is thio-2 acid two (18) ester, the diphosphorous acid pentaerythritol stearic acid ester 2,1,3,5-three (3,5-di-t-butyl-4 hydroxyl)-triazine-2,4, the mixture of 6 (1H, 3H, 5H)-triketones, its weight percent is respectively 0.05～2,0.01～1,0.02～1, is preferably 0.1～1.2,0.05～0.9,0.1～0.95.
A kind of ultralong unit extension glass fiber reinforced polypropylene composite material of the present invention is characterized in that, described other auxiliary agents are fire retardant, color auxiliary agent or lubricant.
The concrete steps of preparation ultralong unit extension glass fiber reinforced polypropylene composite material are as follows:: claimed by weight percentage homo-polypropylene, Co-polypropylene, polyethylene, graft polypropylene, composite antioxidant, other auxiliary agents to be dry mixed 3-5 minute in super mixer; The raw material that mixes is placed in dual-screw-stem machine (glass fibre adds at venting port), through melt extruding, granulation.Temperature is respectively (from spout to extrusion die): 160～180 ℃, and 180～200 ℃, 190～220 ℃, 210～230 ℃, 220～250 ℃.Engine speed is 20～50 hertz.
The unit elongation with overlength of the obtained matrix material of the present invention, other physical and mechanical properties are also very excellent, have also reduced simultaneously cost.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail:
In embodiment and Comparative Examples composite-material formula, homo-polypropylene is to raise the F401 of sub-petrochemical industry, and Co-polypropylene is the CB5 108 of Korea S Kpic, and polyethylene is the LLDPE 7042 of Qilu Petrochemical, graft polypropylene is homemade graft polypropylene, and percentage of grafting is 0.5%; Glass fibre is alkali free glass fibre, and diameter is 13 microns, and Tongxiang, Zhejiang megalith produces; Composite antioxidant comprises thio-2 acid two (18) ester, the diphosphorous acid pentaerythritol stearic acid ester 2,1,3,5-three (3,5-di-t-butyl-4 hydroxyl)-triazine-2,4,6 (1H, 3H, 5H)-triketone, trade(brand)name is respectively Negonox DSTP, Weston 618, Irganox 3114, and I.C.I. company, Weston company, the Ciba company of being respectively produces, and ratio is 1: 2: 5.
Various starting material (except glass fibre) have been claimed by weight percentage, after being dry mixed 3～5 minutes in super mixer; The raw material that mixes is placed in dual-screw-stem machine (glass fibre adds at venting port), through melt extruding, granulation.The section particle that obtains after dry 3 hours, is used day HT1150B injection moulding machine sample preparation of sea, Ningbo in the convection oven of 100 ℃.
Measurement of Material Mechanical Performance is tested according to iso standard: the batten of test tensile strength and tension set is 170*10*4mm, is undertaken by ISO 527, and speed is 50mm/min; The batten of tested for flexural modulus is 80*10*4mm, is undertaken by ISO 178, and speed is 2mm/min; The batten of test notched Izod impact strength is 80*10*4mm, is undertaken by ISO 179, and v-notch, pendulum are 4J.
Embodiment 1～4
In matrix material, various raw-material weight percents are as shown in table 1, and the temperature of twin screw extruder is respectively (from spout to extrusion die): 170 ℃, and 190 ℃, 215 ℃, 230 ℃, 235 ℃.Engine speed is 30 hertz.
Table 1 embodiment 1-4 formula and material property table
Embodiment 5～7
In matrix material, various raw-material weight percents are as shown in table 2, and the temperature of twin screw extruder is respectively (from spout to extrusion die): 170 ℃, and 190 ℃, 215 ℃, 230 ℃, 235 ℃.Engine speed is 30 hertz.
Table 2 embodiment 5-7 formula and material property table
Embodiment 8～11
In matrix material, various raw-material weight percents are as shown in table 3, and the temperature of twin screw extruder is respectively (from spout to extrusion die): 170 ℃, and 190 ℃, 215 ℃, 230 ℃, 235 ℃.Engine speed is 30 hertz.
Table 3 embodiment 8-11 formula and material property table
Embodiment 12～14
In matrix material, various raw-material weight percents are as shown in table 4, and the temperature of twin screw extruder is respectively (from spout to extrusion die): 170 ℃, and 190 ℃, 215 ℃, 230 ℃, 235 ℃.Engine speed is 30 hertz.
Table 4 embodiment 12-14 formula and material property table
Comparative Examples 1～5
In matrix material, various raw-material weight percents are as shown in table 5, and the temperature of twin screw extruder is respectively (from spout to extrusion die): 170 ℃, and 190 ℃, 215 ℃, 230 ℃, 235 ℃.Engine speed is 30 hertz.
Table 5 Comparative Examples 1-5 formula and material property table
Claims (5)
1. ultralong unit extension glass fiber reinforced polypropylene composite material is characterized in that:
A, formed by the preparation of raw material of following weight percent:
B, described homo-polypropylene relative density are 0.89～0.92, and at 230 ℃, the melt flow rate (MFR) under 2.16 kilograms of loads is 0.5～10g/10min; Described Co-polypropylene relative density is 0.89～0.92, and at 230 ℃, the melt flow rate (MFR) under 2.16 kilograms of loads is 0.5～30g/10min;
Described polyethylene relative density is 0.92～0.96, and at 190 ℃, the melt flow rate (MFR) under 2.16 kilograms of loads is 0.5～25g/10min; Described graft polypropylene be maleic anhydride by way grafting on polypropylene of melting, percentage of grafting is 0.1～1.5%; Described glass fibre is a kind of in alkali free glass fibre, medium-alkali glass fibre, high-strength glass fibre, and its Fibre diameter is 5～24 μ m; Described composite antioxidant is thio-2 acid two (18) ester, the diphosphorous acid pentaerythritol stearic acid ester 2,1,3,5-three (3,5-di-t-butyl-4 hydroxyl)-triazine-2,4,6(1H, 3H, 5H)-mixture of triketone, its weight percent is respectively 0.05～2,0.01～1,0.02～1; Described other auxiliary agent is fire retardant, color auxiliary agent or lubricant.
2. a kind of ultralong unit extension glass fiber reinforced polypropylene composite material according to claim 1, it is characterized in that: thio-2 acid two (18) ester, diphosphorous acid pentaerythritol stearic acid ester 2 and 1,3,5-three (3,5-di-t-butyl-4 hydroxyl)-triazine-2,4,6(1H, 3H, 5H)-mixture of triketone in, three's weight percent is 0.1～1.2,0.05～0.9,0.1～0.95.
3. a kind of ultralong unit extension glass fiber reinforced polypropylene composite material according to claim 1, it is characterized in that: its preparation method is by proportional quantity, homo-polypropylene, Co-polypropylene, polyethylene, graft polypropylene, composite antioxidant and other auxiliary agent to be dry mixed 3-5 minute in super mixer; The raw material that mixes is placed in dual-screw-stem machine, melt extrudes granulation at 160～250 ℃ of temperature; Wherein, glass fibre is added by venting port.
4. a kind of ultralong unit extension glass fiber reinforced polypropylene composite material according to claim 3, it is characterized in that: its method of heating is: from spout to the extrusion die place 160～180 ℃, 180～200 ℃, 190～220 ℃, 210～230 ℃, 220～250 ℃ of five sections carry out.
5. a kind of ultralong unit extension glass fiber reinforced polypropylene composite material according to claim 3, it is characterized in that: in making, engine speed is 20～50 hertz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2007101729184A CN101469093B (en) | 2007-12-25 | 2007-12-25 | Ultralong unit extension glass fiber reinforced polypropylene composite material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101729184A CN101469093B (en) | 2007-12-25 | 2007-12-25 | Ultralong unit extension glass fiber reinforced polypropylene composite material |
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| CN101469093A CN101469093A (en) | 2009-07-01 |
| CN101469093B true CN101469093B (en) | 2013-06-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103059418B (en) * | 2013-01-28 | 2015-04-01 | 宁波康氏塑料科技有限公司 | Preparation method of reinforced and modified polypropylene |
| CN103087429B (en) * | 2013-01-30 | 2015-11-18 | 上海俊尔新材料有限公司 | A kind of low-temperature impact-resistant glass fiber reinforced polypropylene composite material and Synthesis and applications thereof |
| CN103408842B (en) * | 2013-08-08 | 2016-08-10 | 上海日之升新技术发展有限公司 | A kind of water pump anticorrosive endurance glass fiber reinforced polypropylene composite material and preparation method thereof |
| CN104927188A (en) * | 2015-06-05 | 2015-09-23 | 广东天保新材料有限责任公司 | Glass fiber reinforced recycled PP (polypropylene)/PE (polyethylene) composite material with high elongation and preparation method of PP/PE composite material |
| CN105017648A (en) * | 2015-08-07 | 2015-11-04 | 苏州云舒新材料科技有限公司 | Modified polypropylene and preparation method thereof |
| CN106633388B (en) * | 2016-11-17 | 2019-07-09 | 广东道生科技股份有限公司 | A kind of red phosphorus flame-retardant reinforced polypropylene material and preparation method thereof |
| CN109181104B (en) * | 2018-08-20 | 2021-03-23 | 廊坊宇诺塑料制品有限公司 | High-temperature-resistant glass fiber reinforced polypropylene composite material |
| CN113024950B (en) * | 2021-03-15 | 2023-05-26 | 永清县铭达工贸有限公司 | Reinforced and toughened polypropylene plastic and preparation method thereof |
| CN115960414B (en) * | 2022-12-30 | 2023-11-14 | 金发科技股份有限公司 | Polypropylene composite material and preparation method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0886669A1 (en) * | 1996-03-15 | 1998-12-30 | Amoco Corporation | Stiff, strong, tough glass-filled olefin polymer |
| EP1002814A1 (en) * | 1998-06-05 | 2000-05-24 | Japan Polychem Corporation | Propylene block copolymer and propylene resin composition |
| US6521693B2 (en) * | 2000-03-01 | 2003-02-18 | Chisso Corporation | Long fiber-reinforced polypropylene resin composition and molded article |
| CN1966564A (en) * | 2005-11-15 | 2007-05-23 | 哈尔滨鑫达高分子材料股份有限公司 | Reinforced toughening anti-aging polypropylene/nano calcium carbonate composite material and its preparation method |
| CN101007885A (en) * | 2006-01-23 | 2007-08-01 | 贵州省材料技术创新基地 | Composite fillings polypropylene composition and its preparing process |
-
2007
- 2007-12-25 CN CN2007101729184A patent/CN101469093B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0886669A1 (en) * | 1996-03-15 | 1998-12-30 | Amoco Corporation | Stiff, strong, tough glass-filled olefin polymer |
| US5916953A (en) * | 1996-03-15 | 1999-06-29 | Bp Amoco Corporation | Stiff, strong, tough glass-filled olefin polymer |
| EP1002814A1 (en) * | 1998-06-05 | 2000-05-24 | Japan Polychem Corporation | Propylene block copolymer and propylene resin composition |
| US6521693B2 (en) * | 2000-03-01 | 2003-02-18 | Chisso Corporation | Long fiber-reinforced polypropylene resin composition and molded article |
| CN1966564A (en) * | 2005-11-15 | 2007-05-23 | 哈尔滨鑫达高分子材料股份有限公司 | Reinforced toughening anti-aging polypropylene/nano calcium carbonate composite material and its preparation method |
| CN101007885A (en) * | 2006-01-23 | 2007-08-01 | 贵州省材料技术创新基地 | Composite fillings polypropylene composition and its preparing process |
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Address after: 201703 12th Floor, Lane 1, 2855, Shanghai Qingping Highway, Zhaoxiang Town, Qingpu District, Shanghai Patentee after: Shanghai Pret Compound Material Co., Ltd. Address before: 200081 2nd Floor, 421 Lane, Siping Road, Hongkou District, Shanghai Patentee before: Shanghai Pret Compound Material Co., Ltd. |