CN104139591A - Toughened PP self-enhanced composite material and preparation method thereof - Google Patents
Toughened PP self-enhanced composite material and preparation method thereof Download PDFInfo
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- CN104139591A CN104139591A CN201410317138.4A CN201410317138A CN104139591A CN 104139591 A CN104139591 A CN 104139591A CN 201410317138 A CN201410317138 A CN 201410317138A CN 104139591 A CN104139591 A CN 104139591A
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- 239000002131 composite material Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000011347 resin Substances 0.000 claims abstract description 81
- 229920005989 resin Polymers 0.000 claims abstract description 81
- 239000000835 fiber Substances 0.000 claims abstract description 47
- 239000000463 material Substances 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 3
- 239000011208 reinforced composite material Substances 0.000 claims description 22
- 239000004744 fabric Substances 0.000 claims description 12
- 238000009940 knitting Methods 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- 238000005469 granulation Methods 0.000 claims description 5
- 239000008188 pellet Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 7
- 238000002844 melting Methods 0.000 abstract description 6
- 230000008018 melting Effects 0.000 abstract description 6
- 239000002667 nucleating agent Substances 0.000 abstract 1
- 239000002759 woven fabric Substances 0.000 abstract 1
- 239000004743 Polypropylene Substances 0.000 description 124
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 238000004064 recycling Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Reinforced Plastic Materials (AREA)
Abstract
The invention discloses a toughened PP self-enhanced composite material and a preparation method thereof. PP resin is enhanced by utilizing a PP fiber, wherein the material comprises 20-75 mass percent of the PP fiber and 25-80 mass percent of the PP resin, and the sum of mass percent of the two raw materials is 100 percent. The PP fiber refers to a long fiber or a woven fabric prepared by using high-melting-point PP, the PP resin refers to modified PP resin prepared by adding a beta nucleating agent, the toughness of the PP resin is effectively improved, and the melting temperature of the PP resin is reduced, so that the melting point of the PP modified resin is 20-30 DEG C lower than that of the PP fiber, and when the PP fiber self-enhanced composite material is prepared at a certain temperature, the PP resin is melted, PP and the PP fiber are well adhered together, however, the PP fiber is not melted, and high orientation of the PP fiber is guaranteed. Therefore, the effect is enhanced.
Description
Technical field
The present invention relates to plastic material art, refer in particular to a kind of Toughened PP self-reinforced composite material and preparation method thereof.
Background technology
(PP) is cheap for polypropylene, and wide material sources are a kind of common general-purpose plastics.It has good physical and mechanical properties, the features such as chemical resistance and easily machine-shaping.But also there is the shortcomings such as intensity is not high, and molding shrinkage is large, the easy warpage of goods in PP.Conventionally adopt blend, copolymerization, composite strengthening carries out modification to it.
At present, PP strengthens modification mainly with glass fibre, natural plant fibres etc. are main, owing to existing the difference between physicochemical properties between PP matrix and reinforcement, its compatibility is not fine, although these fortifying fibres can improve the intensity of material, has reduced the toughness of material simultaneously yet, affect the use of material, also affected the recycling of material simultaneously.
Summary of the invention
In view of this, the present invention is directed to the disappearance of prior art existence, its main purpose is to provide a kind of Toughened PP self-reinforced composite material with high tenacity, rub resistance, easily processing and preparation method thereof.
For achieving the above object, the present invention adopts following technical scheme: a kind of Toughened PP self-reinforced composite material, by quality 100%, includes:
The shared mass fraction of PP fiber is 20%-75%,
The shared mass fraction of PP resin is 25%-80%,
Two kinds of raw material sums are 100%.
The PP resin that described PP resin is beta nucleater modified mistake.
Described beta nucleater addition is 0.5 ~ 2% of PP resin quality
Described PP fiber is long fibre or braid prepared by PP material.
The fusing point of PP fiber is under equal conditions high 20 ~ 30 ℃ than the fusing point of PP resin.
A preparation method for Toughened PP self-reinforced composite material, comprises the following steps:
(1) first,, after a certain amount of beta nucleater and PP pellet are mixed, utilize dual-screw pelletizer to carry out granulation and make modified resin, and the PP resin through beta nucleater modified is prepared into sheet material with tablet press machine;
(2) PP fiber or PP fibre knitting cloth and the prepared PP modified resin of step 1 sheet material are hot pressed into composite.
Composite in described step (2) is that PP modified resin sheet layer becomes with fibrage or fibrage layer of cloth alternate group.
The temperature of the composite material hot-pressed formation in described step (2) is 160 ~ 165 ℃.
Between described PP modified resin layer and PP fibrage, be further added with PUR, can effectively improve the bond effect between PP modified resin layer and PP fibrage.
The present invention compared with prior art has obvious advantage and beneficial effect, defect for prior art, first the present invention by adopting beta nucleater to carry out modification to PP resin, change the crystallographic property of PP resin, improve on the one hand the toughness of PP resin, the opposing party has reduced the fusing point of PP, and its fusing point is 145 ~ 155 ℃.
Adopt self-control or commercial PP long fibre or the compound preparation PP of fibre knitting cloth hot pressing self-reinforced composite material, in hot-forming process, PP resin generation melting, there is not melting in PP fiber, both, outside having guaranteed that its bond effect well, also retained the high strength of fiber; Can increase substantially mechanical performance and the frictional behaviour of PP.
This material preparation process is simple, and integral body is all PP resin, makes recycling very convenient, has both reduced cost, also has positive environment protection significance.
The specific embodiment
Below in conjunction with example in detail technical scheme of the present invention, but protection domain is not so limited.
Embodiment 1
A Toughened PP self-reinforced composite material, includes: the shared mass fraction of PP fiber is that the shared mass fraction of 20%, PP resin is 80%; The PP resin that this PP resin is beta nucleater modified mistake.
Wherein, beta nucleater addition is 0.5% of PP resin quality
This PP fiber is long fibre or braid prepared by PP material.
The fusing point of PP fiber is under equal conditions high 20 ℃ than the fusing point of PP resin.
The preparation method of above-mentioned Toughened PP self-reinforced composite material, comprises the following steps:
(1) first,, after beta nucleater and PP pellet are mixed, utilize dual-screw pelletizer to carry out granulation and make PP modified resin, and the PP resin through beta nucleater modified is prepared into sheet material with tablet press machine;
(2) PP fiber or PP fibre knitting cloth and the prepared PP modified resin of step 1 sheet material are hot pressed into composite, this composite is that PP modified resin sheet layer becomes with fibrage or fibrage layer of cloth alternate group; The temperature of this composite material hot-pressed formation is 160 ~ 165 ℃.This composite can be according to market demand, carries out multilayer alternately hot-forming, can be for more than two-layer or two-layer; As alternately hot-forming in being from top to bottom PP resin bed, fibrage, PP resin bed, fibrage, PP resin bed etc.
In actual applications, also can between PP modified resin layer and PP fibrage, further add PUR, it can effectively improve the bond effect between PP modified resin layer and PP fibrage.
Embodiment 2
A Toughened PP self-reinforced composite material, includes: the shared mass fraction of PP fiber is that the shared mass fraction of 50%, PP resin is 50%; The PP resin that this PP resin is beta nucleater modified mistake.
Wherein, beta nucleater addition is 0.15% of PP resin quality.
This PP fiber is long fibre or braid prepared by PP material.
The fusing point of PP fiber is under equal conditions high 25 ℃ than the fusing point of PP resin.
The preparation method of above-mentioned Toughened PP self-reinforced composite material, comprises the following steps:
(1) first,, after beta nucleater and PP pellet are mixed, utilize dual-screw pelletizer to carry out granulation and make PP modified resin, and the PP resin through beta nucleater modified is prepared into sheet material with tablet press machine;
(2) PP fiber or PP fibre knitting cloth and the prepared PP modified resin of step 1 sheet material are hot pressed into composite, this composite is that PP modified resin sheet layer becomes with fibrage or fibrage layer of cloth alternate group; The temperature of this composite material hot-pressed formation is 160 ~ 165 ℃.This composite can be according to market demand, carries out multilayer alternately hot-forming, can be for more than two-layer or two-layer; As alternately hot-forming in being from top to bottom PP resin bed, fibrage, PP resin bed, fibrage, PP resin bed etc.
In actual applications, also can between PP modified resin layer and PP fibrage, further add PUR, it can effectively improve the bond effect between PP modified resin layer and PP fibrage.
Embodiment 3
A Toughened PP self-reinforced composite material, includes: the shared mass fraction of PP fiber is that the shared mass fraction of 75%, PP resin is 25%; The PP resin that this PP resin is beta nucleater modified mistake.
Wherein, beta nucleater addition is 2% of PP resin quality
This PP fiber is long fibre or braid prepared by PP material.
The fusing point of PP fiber is under equal conditions high 30 ℃ than the fusing point of PP resin.
The preparation method of above-mentioned Toughened PP self-reinforced composite material, comprises the following steps:
(1) first,, after beta nucleater and PP pellet are mixed, utilize dual-screw pelletizer to carry out granulation and make PP modified resin, and the PP resin through beta nucleater modified is prepared into sheet material with tablet press machine;
(2) PP fiber or PP fibre knitting cloth and the prepared PP modified resin of step 1 sheet material are hot pressed into composite, this composite is that PP modified resin sheet layer becomes with fibrage or fibrage layer of cloth alternate group; The temperature of this composite material hot-pressed formation is 160 ~ 165 ℃.This composite can be according to market demand, carries out multilayer alternately hot-forming, can be for more than two-layer or two-layer; As alternately hot-forming in being from top to bottom PP resin bed, fibrage, PP resin bed, fibrage, PP resin bed etc.
After tested, embodiment 1 to 3 all has stronger mechanical property, of the present invention focusing on by first adopting beta nucleater to carry out modification to PP resin, change the crystallographic property of PP resin, improve on the one hand the toughness of PP resin, the opposing party has reduced the fusing point of PP, and its fusing point is 145 ~ 155 ℃.
Adopt self-control or commercial PP long fibre or the compound preparation PP of fibre knitting cloth hot pressing self-reinforced composite material, in hot-forming process, PP resin generation melting, there is not melting in PP fiber, both, outside having guaranteed that its bond effect well, also retained the high strength of fiber; Can increase substantially mechanical performance and the frictional behaviour of PP.
This material preparation process is simple, and integral body is all PP resin, makes recycling very convenient, has both reduced cost, also has positive environment protection significance.
In actual applications, also can between PP modified resin layer and PP fibrage, further add PUR, it can effectively improve the bond effect between PP modified resin layer and PP fibrage.
The above, it is only preferred embodiment of the present invention, not technical scope of the present invention is imposed any restrictions, therefore every foundation technical spirit of the present invention is to any trickle modification made for any of the above embodiments, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (9)
1. a Toughened PP self-reinforced composite material, is characterized in that: by quality 100%, include:
The shared mass fraction of PP fiber is 20%-75%,
The shared mass fraction of PP resin is 25%-80%,
Two kinds of raw material sums are 100%.
2. a kind of Toughened PP self-reinforced composite material according to claim 1, is characterized in that: the PP resin that described PP resin is beta nucleater modified mistake.
3. a kind of Toughened PP self-reinforced composite material according to claim 1, is characterized in that: described beta nucleater addition is 0.1 ~ 0.2% of PP resin quality.
4. a kind of Toughened PP self-reinforced composite material according to claim 1, is characterized in that: described PP fiber is long fibre or braid prepared by PP material.
5. a kind of Toughened PP self-reinforced composite material according to claim 1, is characterized in that: the fusing point of PP fiber is under equal conditions high 20 ~ 30 ℃ than the fusing point of PP resin.
6. a preparation method for Toughened PP self-reinforced composite material as claimed in claim 1, is characterized in that, comprises the following steps:
(1) first,, after a certain amount of beta nucleater and PP pellet are mixed, utilize dual-screw pelletizer to carry out granulation and make modified resin, and the PP resin through beta nucleater modified is prepared into sheet material with tablet press machine;
(2) PP fiber or PP fibre knitting cloth and the prepared PP modified resin of step 1 sheet material are hot pressed into composite.
7. the preparation method of a kind of Toughened PP self-reinforced composite material according to claim 6, is characterized in that: the composite in described step (2) is that PP modified resin sheet layer becomes with fibrage or fibrage layer of cloth alternate group.
8. the preparation method of a kind of Toughened PP self-reinforced composite material according to claim 7, is characterized in that: the temperature of the composite material hot-pressed formation in described step (2) is 160 ~ 165 ℃.
9. the preparation method of a kind of Toughened PP self-reinforced composite material according to claim 7, is characterized in that: between described PP modified resin layer and PP fibrage, be further added with PUR.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410317138.4A CN104139591A (en) | 2014-07-04 | 2014-07-04 | Toughened PP self-enhanced composite material and preparation method thereof |
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| CN201410317138.4A CN104139591A (en) | 2014-07-04 | 2014-07-04 | Toughened PP self-enhanced composite material and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106739387A (en) * | 2015-11-21 | 2017-05-31 | 华东理工大学 | A kind of continuous method for preparing polypropylene self-reinforced composite material of use double-steel belt pressing machine pressurization |
| CN106739207A (en) * | 2015-11-21 | 2017-05-31 | 华东理工大学 | A kind of method using continuously polypropylene self-reinforced composite material is prepared to roll squeezer pressurization |
| CN108440902A (en) * | 2018-02-02 | 2018-08-24 | 北京化工大学 | A kind of intermingling material in relation to epoxy resin activeness and quietness |
| CN109153890A (en) * | 2016-05-24 | 2019-01-04 | 大众汽车有限公司 | Potting compound, the preparation method of potting compound, electronic device and motor vehicles |
| CN109851909A (en) * | 2018-10-31 | 2019-06-07 | 宁波万盛实业有限公司 | A kind of high-toughness polypropylene composite material and preparation method thereof |
| CN110818998A (en) * | 2019-12-10 | 2020-02-21 | 北京航天凯恩化工科技有限公司 | Preparation method of polypropylene/carbon nanotube fiber composite material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5627226A (en) * | 1995-11-03 | 1997-05-06 | Exxon Research & Engineering Company | Polypropylene/fiber composites |
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2014
- 2014-07-04 CN CN201410317138.4A patent/CN104139591A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5627226A (en) * | 1995-11-03 | 1997-05-06 | Exxon Research & Engineering Company | Polypropylene/fiber composites |
Non-Patent Citations (2)
| Title |
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| 何阳: "《稀土β成核剂改性聚丙烯的研究》", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
| 敖玉辉等: "《丙纶纤维自增强聚丙烯树脂的研究》", 《化学工程师》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106739387A (en) * | 2015-11-21 | 2017-05-31 | 华东理工大学 | A kind of continuous method for preparing polypropylene self-reinforced composite material of use double-steel belt pressing machine pressurization |
| CN106739207A (en) * | 2015-11-21 | 2017-05-31 | 华东理工大学 | A kind of method using continuously polypropylene self-reinforced composite material is prepared to roll squeezer pressurization |
| CN109153890A (en) * | 2016-05-24 | 2019-01-04 | 大众汽车有限公司 | Potting compound, the preparation method of potting compound, electronic device and motor vehicles |
| CN109153890B (en) * | 2016-05-24 | 2021-08-10 | 大众汽车有限公司 | Potting compound, preparation method of potting compound, electronic device and motor vehicle |
| CN108440902A (en) * | 2018-02-02 | 2018-08-24 | 北京化工大学 | A kind of intermingling material in relation to epoxy resin activeness and quietness |
| CN108440902B (en) * | 2018-02-02 | 2020-05-19 | 北京化工大学 | Epoxy resin reinforced and toughened blending material |
| CN109851909A (en) * | 2018-10-31 | 2019-06-07 | 宁波万盛实业有限公司 | A kind of high-toughness polypropylene composite material and preparation method thereof |
| CN109851909B (en) * | 2018-10-31 | 2021-06-11 | 宁波万盛实业有限公司 | High-toughness polypropylene composite material and preparation method thereof |
| CN110818998A (en) * | 2019-12-10 | 2020-02-21 | 北京航天凯恩化工科技有限公司 | Preparation method of polypropylene/carbon nanotube fiber composite material |
| CN110818998B (en) * | 2019-12-10 | 2022-11-15 | 北京航天凯恩化工科技有限公司 | Preparation method of polypropylene/carbon nanotube fiber composite material |
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Application publication date: 20141112 |
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