CN108084561A - A kind of lightweight polypropylene micro foaming composite material and preparation method thereof - Google Patents
A kind of lightweight polypropylene micro foaming composite material and preparation method thereof Download PDFInfo
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- CN108084561A CN108084561A CN201711378667.5A CN201711378667A CN108084561A CN 108084561 A CN108084561 A CN 108084561A CN 201711378667 A CN201711378667 A CN 201711378667A CN 108084561 A CN108084561 A CN 108084561A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/08—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing carbon dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2427/18—Homopolymers or copolymers of tetrafluoroethylene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention discloses a kind of lightweight polypropylene micro foaming composite material and preparation method thereof, and the composite material is made of 97 99 wt% PP composite materials and 13 wt% chemical foaming agent；The PP composite material is made of in parts by weight 86 94 parts of homopolymerization PPs, 5 10 parts of compatilizers, 14 parts of polytetrafluoroethylene fibres, 0.2 0.4 parts of antioxidant, 0.5 1 parts of lubricants, 0.5 1 parts of light stabilizers, 02 parts of other auxiliary agents.Polytetrafluoroethylene fibre forms tridimensional network in polypropylene matrix in composite material prepared by the present invention, significantly improve polypropylene mechanical performance and melt strength, the micro-foaming material density is small, good mechanical property, abscess average diameter is small, uniform and smooth, processing is simple, it is easy to be molded, product lightweight can be widely applied to the fields such as automobile, household electrical appliances, packaging, electronic product.
Description
Technical field
The invention belongs to technical field of polymer materials, and in particular to a kind of lightweight polypropylene micro foaming composite material and its
Preparation method.
Background technology
The advantages such as polypropylene micro-foaming material has density small, and intensity is high, and notch sensitive is low.In addition, internal porous is also assigned
It gives such product that there is sound insulation, heat-insulated, noise reduction, it is made to be increasingly becoming the light-weight designs such as automobile, household electrical appliances, packaging and is keen to
One of material used.Polypropylene belongs to Crystalline plastics, when temperature in use is higher than the melting temperature of material, viscosity of material
It can drastically reduce；And generation melt can be decomposed and be difficult to the gas fettered, matrix is caused to occur collapsing, go here and there and steep and steep so that abscess
It is difficult to control.This defect limits the application of polypropylene micro-foaming material, how to control polypropylene expanded be of concern.
The content of the invention
Low for homopolymerization PP melt strength of the prior art, abscess is big and is unevenly distributed, and cell density is too low, and material should
Narrow with face, the deficiencies of product is difficult to, the present invention provides a kind of lightweight polypropylene micro foaming composite material, the composite woods
Material is made of 97-99wt% PP composite materials and 1-3wt% chemical foaming agent；
The PP composite material is made of by weight following components：
Further, the homopolymerization PP is at 230 DEG C, under the test condition of 2.16kg, melt flow rate (MFR) 1-30g/
10min。
Further, the compatilizer be maleic anhydride modified homopolymerization PP, grafting rate 1.2%.
Further, the chemical foaming agent is foaming agent master batch of the sodium acid carbonate using HDPE as carrier.
Further, the antioxidant is Hinered phenols antioxidant, thiosulfates kind antioxidant, phosphorous acid esters antioxygen
At least one of agent.
Further, the Hinered phenols antioxidant is antioxidant 1010；The thiosulfates kind antioxidant is antioxygen
Agent DLTP；The phosphite ester kind antioxidant is irgasfos 168.
Further, the light stabilizer is one kind in hindered amine light stabilizer.
Further, the lubricant for polyethylene wax, calcium stearate, zinc stearate, lignite wax, pentaerythrite stearic acid
At least one of ester.
Further, other described auxiliary agents for UV absorbers, finishing agent, antistatic agent or colorant at least
It is a kind of.
The preparation method of lightweight polypropylene micro foaming composite material, comprises the following steps：
(1) by 86-94 parts of homopolymerization PP, 5-10 parts of compatilizer, 1-4 parts of polytetrafluoroethylene fibre, 0.2-0.4 parts of antioxidant,
It is stirred until homogeneous in 0-2 parts of 0.5-1 parts of lubricant, 0.5-1 parts of light stabilizer, other auxiliary agents addition high-speed mixers, then throws
Enter in parallel dual-screw extruding machine, by melting extrusion, be granulated, PP composite material is made；The wherein extrusion temperature of extruder
It spends for 200-220 DEG C, screw speed 350-400r/min, vacuum degree is-0.06-- 0.08MPa；
(2) PP composite material 97-99wt% obtained and chemical foaming agent 1-3wt% is added in high-speed mixer
It is uniformly mixed, through twice-die-opening injection molding, obtains lightweight polypropylene micro foaming composite material；Wherein, forming temperature 180-
200℃。
The beneficial effects of the present invention are：1st, polytetrafluoroethylene fibre passes through compatilizer in composite material prepared by the present invention
The homopolymerization PP of modified by maleic acid anhydride graft enhances the two-phase interface adhesive force in polypropylene matrix, the shape in polypropylene continuous phase
Into stable three dimensional skeletal structure, the melt strength of composite material is effectively increased, good matrix is provided for foaming；Gather simultaneously
Tetrafluoroethylene fiber can be used as cell nucleation point, and numerous liquid-solid interfaces is formed with matrix resin, there are substantial amounts of low energy point,
Be conducive to gas and form nuclei of bubbles in low energy point, heterogeneous nucleation significant effect improves the foaming nucleation rate of composite material, obtains
Abscess is small and fine and smooth.With the increase of polytetrafluoroethylene fibre additive amount, the mobility of composite material continuously decreases, and abscess is average
Diameter is less and less.
2nd, matrices of composite material produced by the present invention has higher melt strength, polytetrafluoroethylene fibre heterogeneous nucleation effect
Fruit is notable, is effectively improved polyacrylic foam performance, inhibits collapsing for abscess, and steeps, and it is minimum to obtain abscess average diameter for string bubble
For 76 μm.
3rd, the present invention uses sodium acid carbonate class foaming agent as source of the gas, will not increase the smell and volatile material of material；
In addition, the obtained density of material of the present invention is small, apparent density is most down to 0.68g/cm3, loss of weight is up to 25%, is that a kind of lightweight is green
Color friendly material.
4th, composite material produced by the present invention has excellent mechanical performance, micro- according to national standard examination criteria polypropylene chemical
Foam composite material cantilever beam notch strength is higher than 3KJ/m2, bending modulus higher than 1500MPa, composite material of the present invention have compared with
Good mechanical performance, disclosure satisfy that the standard that the product of the industries such as automobile, household electrical appliances uses.
Specific embodiment
The present invention is described in further detail with reference to specific embodiment.
Embodiment 1
A kind of lightweight polypropylene chemical micro foaming composite material is sent out by 99wt% PP composite materials and 1wt% chemistry
Infusion forms；
The PP composite material is made of by weight following components：
Specific preparation method comprises the following steps：
(1) by 94 parts of homopolymerization PP, 5 parts of compatilizer, 1 part of polytetrafluoroethylene fibre, 0.2 part of antioxidant 1010, antioxidant
168 0.2 parts, 0.5 part of lubricant stearic acid calcium, be stirred until homogeneous in 0.5 part of addition high-speed mixer of light stabilizer, then throw
Enter in parallel dual-screw extruding machine, by melting extrusion, be granulated, PP composite material is made；
(2) PP composite material 99wt% obtained is added in chemical foaming agent 1wt% in high-speed mixer and mixed
Uniformly, through twice-die-opening injection molding, lightweight polypropylene micro foaming composite material is obtained；Wherein, forming temperature 180-200
℃。
Embodiment 2
A kind of lightweight polypropylene chemical micro foaming composite material is sent out by 97wt% PP composite materials and 3wt% chemistry
Infusion forms；
The PP composite material is made of by weight following components：
Specific preparation method comprises the following steps：
(1) by 86 parts of homopolymerization PP, 10 parts of compatilizer, 4 parts of polytetrafluoroethylene fibre, 0.1 part of antioxidant 1010, antioxidant
168 0.1 parts, 1 part of lubricant stearic acid calcium, be stirred until homogeneous in 1 part of addition high-speed mixer of light stabilizer, then input is same
Into double screw extruder, by melting extrusion, it is granulated, PP composite material is made；
(2) PP composite material 97wt% obtained is added in chemical foaming agent 3wt% in high-speed mixer and mixed
Uniformly, through twice-die-opening injection molding, lightweight polypropylene micro foaming composite material is obtained；Wherein, forming temperature 180-200
℃。
Embodiment 3
A kind of lightweight polypropylene chemical micro foaming composite material is sent out by 97wt% PP composite materials and 3wt% chemistry
Infusion forms；
The PP composite material is made of by weight following components：
Specific preparation method comprises the following steps：
(1) by 91 parts of homopolymerization PP, 7 parts of compatilizer, 2 parts of polytetrafluoroethylene fibre, 0.15 part of antioxidant 1010, antioxidant
168 0.15 parts, 0.8 part of lubricant PE waxes, be stirred until homogeneous in 0.75 part of addition high-speed mixer of light stabilizer, then put into
In parallel dual-screw extruding machine, by melting extrusion, it is granulated, PP composite material is made；
(2) PP composite material 97wt% obtained is added in chemical foaming agent 3wt% in high-speed mixer and mixed
Uniformly, through twice-die-opening injection molding, lightweight polypropylene micro foaming composite material is obtained；Wherein, forming temperature 180-200
℃。
Embodiment 4
A kind of lightweight polypropylene chemical micro foaming composite material is sent out by 97wt% PP composite materials and 3wt% chemistry
Infusion forms；
The PP composite material is made of by weight following components：
Specific preparation method comprises the following steps：
(1) by 87 parts of homopolymerization PP, 10 parts of compatilizer, 3 parts of polytetrafluoroethylene fibre, 0.15 part of antioxidant 1010, antioxygen
0.15 part of agent DLTP, 0.5 part of lubricant stearic acid calcium, 0.75 part of light stabilizer, 1 part of colorant, 0.5 part of antistatic agent, surface
It is stirred until homogeneous in 0.5 part of addition high-speed mixer of brightener, then puts into parallel dual-screw extruding machine, squeezed by melting
Go out, be granulated, PP composite material is made；
(2) PP composite material 97wt% obtained is added in chemical foaming agent 3wt% in high-speed mixer and mixed
Uniformly, through twice-die-opening injection molding, lightweight polypropylene micro foaming composite material is obtained；Wherein, forming temperature 180-200
℃。
Comparative example 1
A kind of polypropylene chemical fretting map combined material is by 97wt% PP composite materials and 3wt% chemical foaming agent groups
Into；
The PP composite material is made of by weight following components：
Specific preparation method comprises the following steps：
(1) it is 90 parts of homopolymerization PP, 10 parts of compatilizer, 0.2 part of antioxidant 1010,0.2 part of irgasfos 168, lubricant is hard
Be stirred until homogeneous in 1 part of addition high-speed mixer of resin acid calcium, then put into parallel dual-screw extruding machine in, by melting extrusion,
It is granulated, Polypropylene compositions material is made；
(2) PP composite material 97wt% obtained is added in chemical foaming agent 3wt% in high-speed mixer and mixed
Uniformly, through twice-die-opening injection molding, polypropylene micro foaming composite material is obtained；Wherein, forming temperature is 180-200 DEG C.
By the main physical index of composite material made from above-described embodiment 1-4 and comparative example 1 according to coherent detection standard
Test, it is melt index, apparent density, abscess average diameter, tensile strength, Izod notched impact strength, bending strength, curved
The examination criteria of bent modulus and testing result are as shown in table 1 below：
The main physical property measurement result of material is made in 1 embodiment 1-4 of table and comparative example 1
As shown in Table 1, the melt index of product that prepared by the present invention decline it is notable, in the range of 2-3.9g/10min, most
Low melt index only has 2g/10min；In terms of blasthole average diameter, the present invention has more apparent reduction compared with comparative example 1, steeps
Hole average diameter is 76-84 μm；In loss of weight test, the present invention measures numerical value as 16%-25%, and compared with comparative example 1, loss of weight is bright
It is aobvious, reduce the consumption of material.In addition, the performance in terms of tensile strength, notch impact strength, bending strength, bending modulus
It increases, fully meets industry requirement.
It is understood that the above description of the embodiments is intended to facilitate those skilled in the art and using this hair
It is bright.Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein
General Principle is applied in other embodiment without having to go through creative labor.Therefore, the invention is not restricted to implementations here
Example, those skilled in the art's announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be
Within protection scope of the present invention.
Claims (9)
1. a kind of lightweight polypropylene micro foaming composite material, it is characterised in that：The composite material is answered by 97-99 wt% polypropylene
Condensation material is formed with 1-3 wt% chemical foaming agent；
The PP composite material is made of by weight following components：
86-94 parts of homopolymerization PP,
5-10 parts of compatilizer,
1-4 parts of polytetrafluoroethylene fibre,
0.2-0.4 parts of antioxidant,
0.5-1 parts of lubricant,
0.5-1 parts of light stabilizer,
0-2 parts of other auxiliary agents.
2. a kind of lightweight polypropylene micro foaming composite material according to claim 1, it is characterised in that：The homopolymerization PP exists
Under the test condition of 2.16kg, melt flow rate (MFR) at 230 DEG C is 1-30g/10min.
3. a kind of lightweight polypropylene chemical micro foaming composite material according to claim 1, it is characterised in that：The chemistry
Foaming agent is foaming agent master batch of the sodium acid carbonate using HDPE as carrier.
4. a kind of lightweight polypropylene micro foaming composite material according to claim 1, it is characterised in that：The antioxidant is
At least one of Hinered phenols antioxidant, thiosulfates kind antioxidant, phosphite ester kind antioxidant.
5. a kind of lightweight polypropylene micro foaming composite material according to claim 5, it is characterised in that：The Hinered phenols
Antioxidant is antioxidant 1010；The thiosulfates kind antioxidant is anti-oxidant DLTP；The phosphite ester kind antioxidant is
Irgasfos 168.
6. a kind of lightweight polypropylene micro foaming composite material according to claim 1, it is characterised in that：The light is stablized
Agent is one kind in hindered amine light stabilizer.
7. a kind of lightweight polypropylene micro foaming composite material according to claim 1, it is characterised in that：The lubricant is
At least one of polyethylene wax, calcium stearate, zinc stearate, lignite wax, pentaerythritol stearate.
8. a kind of lightweight polypropylene micro foaming composite material according to claim 1, it is characterised in that：Other described auxiliary agents
For at least one of UV absorbers, finishing agent, antistatic agent and colorant.
9. prepare the method for claim 1 ~ 8 any one of them lightweight polypropylene micro foaming composite material, it is characterised in that：Bag
Include following steps：
（1）By 86-94 parts of homopolymerization PP, 5-10 parts of compatilizer, 1-4 parts of polytetrafluoroethylene fibre, 0.2-0.4 parts of antioxidant, profit
It is stirred until homogeneous in 0-2 parts of 0.5-1 parts of lubrication prescription, 0.5-1 parts of light stabilizer, other auxiliary agents addition high-speed mixers, then throws
Enter in parallel dual-screw extruding machine, by melting extrusion, be granulated, PP composite material is made；The wherein extrusion temperature of extruder
It spends for 200-220 DEG C, screw speed is 350-400 r/min, and vacuum degree is-0.06-- 0.08 MPa；
（2）PP composite material 97-99 wt% obtained are added in chemical foaming agent 1-3 wt% in high-speed mixer and are mixed
Uniformly, through twice-die-opening injection molding, lightweight polypropylene micro foaming composite material is obtained；Wherein, forming temperature 180-200
℃。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711378667.5A CN108084561A (en) | 2017-12-19 | 2017-12-19 | A kind of lightweight polypropylene micro foaming composite material and preparation method thereof |
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|---|---|---|---|
| CN201711378667.5A CN108084561A (en) | 2017-12-19 | 2017-12-19 | A kind of lightweight polypropylene micro foaming composite material and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110724342A (en) * | 2019-10-21 | 2020-01-24 | 晋江瑞碧科技有限公司 | Micro-foaming polypropylene resin composition and preparation method and application thereof |
| CN111286117A (en) * | 2020-02-11 | 2020-06-16 | 中国科学院宁波材料技术与工程研究所 | Method for forming open-cell polymer foam material by micropore injection molding and product |
| GB2585635A (en) * | 2019-05-28 | 2021-01-20 | Kafrit Ind 1993 Ltd | Compositions and methods for use in the preparation of hydrophobic surfaces |
| CN112480545A (en) * | 2020-11-25 | 2021-03-12 | 武汉金发科技有限公司 | Low-noise polypropylene composite material for vehicles |
| CN114316311A (en) * | 2021-11-23 | 2022-04-12 | 快思瑞科技(上海)有限公司 | Foamed composite material and preparation method thereof |
| WO2022127857A1 (en) * | 2020-12-18 | 2022-06-23 | 金发科技股份有限公司 | Reinforced polypropylene material, preparation method therefor and use thereof |
-
2017
- 2017-12-19 CN CN201711378667.5A patent/CN108084561A/en active Pending
Non-Patent Citations (2)
| Title |
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| ALI RIZVI: "In situ fibrillation of CO2-philic polymers: Sustainable route to polymer foams in a continuous process", 《POLYMER》 * |
| 汪涛涛 张才亮 冯连芳 顾雪萍: "聚丙烯微孔发泡材料的研究进展", 《合成树脂及塑料》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2585635A (en) * | 2019-05-28 | 2021-01-20 | Kafrit Ind 1993 Ltd | Compositions and methods for use in the preparation of hydrophobic surfaces |
| GB2585635B (en) * | 2019-05-28 | 2022-03-23 | Kafrit Ind 1993 Ltd | Compositions and methods for use in the preparation of hydrophobic surfaces |
| CN110724342A (en) * | 2019-10-21 | 2020-01-24 | 晋江瑞碧科技有限公司 | Micro-foaming polypropylene resin composition and preparation method and application thereof |
| CN111286117A (en) * | 2020-02-11 | 2020-06-16 | 中国科学院宁波材料技术与工程研究所 | Method for forming open-cell polymer foam material by micropore injection molding and product |
| CN111286117B (en) * | 2020-02-11 | 2023-02-10 | 中国科学院宁波材料技术与工程研究所 | Method for forming open-cell polymer foam material by micropore injection molding and product |
| CN112480545A (en) * | 2020-11-25 | 2021-03-12 | 武汉金发科技有限公司 | Low-noise polypropylene composite material for vehicles |
| WO2022127857A1 (en) * | 2020-12-18 | 2022-06-23 | 金发科技股份有限公司 | Reinforced polypropylene material, preparation method therefor and use thereof |
| CN114316311A (en) * | 2021-11-23 | 2022-04-12 | 快思瑞科技(上海)有限公司 | Foamed composite material and preparation method thereof |
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Application publication date: 20180529 |