CN104862804A - High-strength wear-resistant polypropylene monofilament and production method thereof - Google Patents
High-strength wear-resistant polypropylene monofilament and production method thereof Download PDFInfo
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- CN104862804A CN104862804A CN201510300475.7A CN201510300475A CN104862804A CN 104862804 A CN104862804 A CN 104862804A CN 201510300475 A CN201510300475 A CN 201510300475A CN 104862804 A CN104862804 A CN 104862804A
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Abstract
The invention provides a high-strength wear-resistant polypropylene monofilament and a production method thereof. The high-strength wear-resistant polypropylene monofilament comprises isotactic polypropylene and surface-modified nanoparticles, wherein the surface-modified nanoparticles comprise nano calcium carbonate, nano titanium dioxide or nano silicon dioxide, and the content of the surface-modified nanoparticles is 0.5-3%. The production method comprises the following steps: S101, mixing raw materials, namely the isotactic polypropylene and the surface-modified nanoparticles, fusing the mixed raw materials, and performing extrusion by an extruder to perform spinning; S102, cooling the spun monofilament; S103, enabling the cooled monofilament to be stretched; S104, performing hot shaping on the stretched monofilament. According to the high-strength wear resistant polypropylene monofilament and the production method thereof, which are provided by the invention, a certain content of surface-modified nanoparticles are added in the isotactic polypropylene, and the raw materials are processed under a specified temperature, so that the wear resistant property of the polypropylene is greatly enhanced.
Description
Technical field
The present invention relates to a kind of monofilament, particularly relate to a kind of high-strength wearable polypropylene monofilament and production method thereof.
Background technology
Polypropylene is as a kind of general-purpose plastics, abundant raw material source, cheap, compared with other general-purpose plastics, there is good combination property, as: relative density is little, and processing characteristics is excellent, and yield strength, TENSILE STRENGTH and elastic modelling quantity are higher, electrical insulating property is good, proof stress be full of cracks and chemical proofing better etc.; But polypropylene fragility is high, and notch impact strength is low, wears no resistance, affect its service behaviour, greatly limit the application of polyacrylic further genralrlization.
Summary of the invention
Provide hereinafter about brief overview of the present invention, to provide about the basic comprehension in some of the present invention.Should be appreciated that this general introduction is not summarize about exhaustive of the present invention.It is not that intention determines key of the present invention or pith, and nor is it intended to limit the scope of the present invention.Its object is only provide some concept in simplified form, in this, as the preorder in greater detail discussed after a while.
The object of this invention is to provide a kind of high-strength wearable polypropylene monofilament and production method thereof, solve the polypropylene fragility described in background technology high, the problem such as wear no resistance.
The invention provides a kind of high-strength wearable polypropylene monofilament, comprise: isotactic polypropylene and surface-modified nanoparticles, described surface-modified nanoparticles comprises: nano-calcium carbonate, nano titanium oxide or nano silicon, described surface-modified nanoparticles content is 0.5 ~ 3%, and described surface-modified nanoparticles footpath is 1 ~ 50nm.
Present invention also offers the production method of this high-strength wearable polypropylene monofilament, comprise step:
S101: described isotactic polypropylene is mixed with described surface-modified nanoparticles raw material, mixed raw material is carried out melting, and extruded by extruder and carry out spinning;
S102: the monofilament spun is cooled;
S103: cooled monofilament is stretched;
S104: HEAT SETTING is carried out to the monofilament after stretching.
Pass through the surface-modified nanoparticles adding certain content in isotactic polypropylene in high-strength wearable polypropylene monofilament provided by the invention and production method thereof, and considerably increase polyacrylic anti-wear performance by the process of specified temp.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is high-strength wearable polypropylene monofilament production method flow chart in the present invention.
Detailed description of the invention
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.The element described in an accompanying drawing of the present invention or a kind of embodiment and feature can combine with the element shown in one or more other accompanying drawing or embodiment and feature.It should be noted that for purposes of clarity, accompanying drawing and eliminate expression and the description of unrelated to the invention, parts known to persons of ordinary skill in the art and process in illustrating.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not paying creative work, all belongs to the scope of protection of the invention.
Embodiment one:
The invention provides a kind of high-strength wearable polypropylene monofilament, comprise: isotactic polypropylene and surface-modified nanoparticles, described surface-modified nanoparticles comprises: nano-calcium carbonate, nano titanium oxide or nano silicon, described surface-modified nanoparticles content is 0.5 ~ 3%, and described surface-modified nanoparticles footpath is 1 ~ 50nm.
High-strength wearable polypropylene monofilament provided by the invention by adding kinds of surface modified Nano particle in isotactic polypropylene, monofilament is made by steps such as melt spinnings, the anti-wear performance of the monofilament made improves greatly, when being applied to the field such as nonwoven fabric, medical treatment, anti-wear performance is better, and the performance such as safety belt, safety net made is better.
Optionally, described filament diameter is 0.08mm ~ 0.3mm, filament strength >=4.5cN/dtex, and elongation at break is 20 ~ 30%; The high-strength wearable polypropylene monofilament diameter made is comparatively thin, but anti-wear performance improves, and have higher intensity and elongation at break, the scope of application is more extensive simultaneously.
Embodiment two:
As shown in Figure 1, present invention also offers a kind of production method of high-strength wearable polypropylene monofilament, comprise step:
S101: described isotactic polypropylene is mixed with described surface-modified nanoparticles raw material, mixed raw material is carried out melting, and extruded by extruder and carry out spinning;
S102: the monofilament spun is cooled;
S103: cooled monofilament is stretched;
S104: HEAT SETTING is carried out to the monofilament after stretching.
Aforementioned production method is by mixing raw material, mixed raw materials melt spinning, to cooling from extruder monofilament out, stretching and the step such as HEAT SETTING, by specified temp and mode, the process such as stretching are carried out to monofilament in each step, determine filament strength and the elongation at break of high-strength wearable polypropylene monofilament.
Optionally, spinning temperature described in step S101 is: 280 ~ 300 DEG C; Carry out spinning at such a temperature and both ensure that polypropylene material and surface-modified nanoparticles raw material can meltings, and monofilament can be shaping after melt extruding.
Optionally, in step S102, cooling is specially water cooling, and described water cooling temperature is: 25 ~ 40 DEG C; Monofilament after melt extruding needs cooling, and ensure the intensity of monofilament, the present invention adopts water cooling, and by the monofilament after extruding by pond, in pond, the temperature of water accurately controls between 10 ~ 35 DEG C.
Optionally, step S103 specifically comprises:
S201: the stretching of one-level hot water is carried out to cooled monofilament;
S202: carry out the stretching of secondary hot blast subsequently.Cooled monofilament needs to stretch within the scope of filament strength, and needs by multistage stretching, makes monofilament reach diameter and the specification of needs, can not reduce the intensity of monofilament while ensureing monofilament percentage elongation; Stretch and to stretch and hot blast stretching respectively by hot water, respective to be temperature controlledly not quite similar yet, the multiplying power of each self stretch is not identical yet.
Optionally, described one-level hot water draft temperature is: 80 ~ 95 DEG C; Described secondary hot blast draft temperature is: 185 ~ 200 DEG C.
Optionally, total multiplying power that stretches described in step S103 is: 5 ~ 8 times; Respectively by above-mentioned multi-drawing, total multiplying power that high-strength wearable polypropylene monofilament is stretched reaches 5 ~ 8 times, and the monofilament simultaneously under this stretching ratio still has the intensity of more than 4.5cN/dtex.
Optionally, heat setting temperature described in step S104 is: 185 ~ 200 DEG C; Monofilament after stretching carries out HEAT SETTING by the heat-setting equipment of said temperature, ensures that shaping filament properties is stablized.
The present invention obtains high-strength wearable polypropylene monofilament by above-mentioned raw material and production stage, and the anti-wear performance of this polypropylene monofilament has increased significantly.
State in each embodiment on the invention, the sequence number of embodiment and/or sequencing are only convenient to describe, and do not represent the quality of embodiment.The description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
Although last it is noted that described the present invention and advantage thereof in detail above, be to be understood that and can carry out various change when not exceeding the spirit and scope of the present invention limited by appended claim, substituting and converting.And scope of the present invention is not limited only to the specific embodiment of process, equipment, means, method and step described by description.One of ordinary skilled in the art will readily appreciate that from disclosure of the present invention, can use perform the function substantially identical with corresponding embodiment described herein or obtain and its substantially identical result, existing and that will be developed in the future process, equipment, means, method or step according to the present invention.Therefore, appended claim is intended to comprise such process, equipment, means, method or step in their scope.
Claims (9)
1. a high-strength wearable polypropylene monofilament, it is characterized in that, comprise: isotactic polypropylene and surface-modified nanoparticles, described surface-modified nanoparticles comprises: nano-calcium carbonate, nano titanium oxide or nano silicon, described surface-modified nanoparticles content is 0.5 ~ 3%, and described surface-modified nanoparticles footpath is 1 ~ 50nm.
2. high-strength wearable polypropylene monofilament according to claim 1, is characterized in that, described filament diameter is 0.08mm ~ 0.3mm, filament strength >=4.5cN/dtex, and elongation at break is 20 ~ 30%.
3. a production method for high-strength wearable polypropylene monofilament as claimed in claim 1, is characterized in that, comprise step:
S101: described isotactic polypropylene is mixed with described surface-modified nanoparticles raw material, mixed raw material is carried out melting, and extruded by extruder and carry out spinning;
S102: the monofilament spun is cooled;
S103: cooled monofilament is stretched;
S104: HEAT SETTING is carried out to the monofilament after stretching.
4. the production method of hydrophilic polypropylene monofilament according to claim 3, is characterized in that, spinning temperature described in step S101 is: 280 ~ 300 DEG C.
5. the production method of hydrophilic polypropylene monofilament according to claim 3, is characterized in that, in step S102, cooling is specially water cooling, and described water cooling temperature is: 25 ~ 40 DEG C.
6. the production method of hydrophilic polypropylene monofilament according to claim 3, it is characterized in that, step S103 specifically comprises:
S201: the stretching of one-level hot water is carried out to cooled monofilament;
S202: carry out the stretching of secondary hot blast subsequently.
7. the production method of hydrophilic polypropylene monofilament according to claim 6, is characterized in that, described one-level hot water draft temperature is: 80 ~ 95 DEG C; Described secondary hot blast draft temperature is: 185 ~ 200 DEG C.
8. the production method of hydrophilic polypropylene monofilament according to claim 3, is characterized in that, total multiplying power that stretches described in step S103 is: 5 ~ 8 times.
9. the production method of hydrophilic polypropylene monofilament according to claim 3, is characterized in that, heat setting temperature described in step S104 is: 185 ~ 200 DEG C.
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Cited By (8)
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| CN105951203A (en) * | 2016-06-27 | 2016-09-21 | 马海燕 | Anti-aging polypropylene monofilament and production method thereof |
| CN105951204A (en) * | 2016-06-27 | 2016-09-21 | 马海燕 | High-strength polypropylene monofilament and production method thereof |
| CN108441978A (en) * | 2018-03-29 | 2018-08-24 | 南通新帝克单丝科技股份有限公司 | Large-diameter and high-strength polypropylene monofilament and preparation method thereof |
| CN108754644A (en) * | 2018-06-29 | 2018-11-06 | 东华大学 | High-strength thick denier polypropylene spun-bonded continuous yarn of one kind and preparation method thereof |
| CN109023647A (en) * | 2018-08-22 | 2018-12-18 | 安徽利思达网业有限公司 | A kind of preparation method of the wear-resisting monofilament filter cloth of filtering high temperature liquid |
| CN110684284A (en) * | 2019-11-11 | 2020-01-14 | 南通新帝克单丝科技股份有限公司 | High-strength polypropylene film yarn and preparation method thereof |
| CN111501113A (en) * | 2020-03-27 | 2020-08-07 | 金湖仁泰化纤有限公司 | Spinning box for producing modified polypropylene monofilaments |
| CN112011844A (en) * | 2020-08-04 | 2020-12-01 | 南通新帝克单丝科技股份有限公司 | Medical polypropylene monofilament, product and preparation method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105951203A (en) * | 2016-06-27 | 2016-09-21 | 马海燕 | Anti-aging polypropylene monofilament and production method thereof |
| CN105951204A (en) * | 2016-06-27 | 2016-09-21 | 马海燕 | High-strength polypropylene monofilament and production method thereof |
| CN108441978A (en) * | 2018-03-29 | 2018-08-24 | 南通新帝克单丝科技股份有限公司 | Large-diameter and high-strength polypropylene monofilament and preparation method thereof |
| CN108754644A (en) * | 2018-06-29 | 2018-11-06 | 东华大学 | High-strength thick denier polypropylene spun-bonded continuous yarn of one kind and preparation method thereof |
| CN108754644B (en) * | 2018-06-29 | 2020-06-12 | 东华大学 | High-strength coarse denier polypropylene spun-bonded filament and preparation method thereof |
| CN109023647A (en) * | 2018-08-22 | 2018-12-18 | 安徽利思达网业有限公司 | A kind of preparation method of the wear-resisting monofilament filter cloth of filtering high temperature liquid |
| CN109023647B (en) * | 2018-08-22 | 2020-11-10 | 安徽利思达网业有限公司 | Preparation method of wear-resistant monofilament filter cloth for filtering high-temperature liquid |
| CN110684284A (en) * | 2019-11-11 | 2020-01-14 | 南通新帝克单丝科技股份有限公司 | High-strength polypropylene film yarn and preparation method thereof |
| CN111501113A (en) * | 2020-03-27 | 2020-08-07 | 金湖仁泰化纤有限公司 | Spinning box for producing modified polypropylene monofilaments |
| CN111501113B (en) * | 2020-03-27 | 2021-08-27 | 金湖仁泰化纤有限公司 | Spinning box for producing modified polypropylene monofilaments |
| CN112011844A (en) * | 2020-08-04 | 2020-12-01 | 南通新帝克单丝科技股份有限公司 | Medical polypropylene monofilament, product and preparation method thereof |
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Application publication date: 20150826 |