CN116024681A - Ultrahigh molecular weight polyethylene fiber, and preparation method and application thereof - Google Patents
Ultrahigh molecular weight polyethylene fiber, and preparation method and application thereof Download PDFInfo
- Publication number
- CN116024681A CN116024681A CN202111254228.XA CN202111254228A CN116024681A CN 116024681 A CN116024681 A CN 116024681A CN 202111254228 A CN202111254228 A CN 202111254228A CN 116024681 A CN116024681 A CN 116024681A
- Authority
- CN
- China
- Prior art keywords
- temperature
- molecular weight
- weight polyethylene
- ultra
- high molecular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Abstract
The invention relates to the technical field of high polymer materials, and discloses an ultra-high molecular weight polyethylene fiber, a preparation method and application thereof. The preparation method of the ultra-high molecular weight polyethylene fiber comprises the following steps: step 1, swelling ultra-high molecular weight polyethylene, a flame retardant and an antioxidant in a solvent to obtain a swelling liquid; step 2, mixing, melting and extruding the swelling liquid in a double-screw extruder to obtain a polymer melt; step 3, feeding the polymer melt into a spinning channel for drafting to obtain the ultra-high polymer meltHigh molecular weight polyethylene fibers; the temperature of a feeding port of the double-screw extruder is 25-40 ℃, and the temperature of a mixing melting section is 80-180 ℃; the temperature of an extrusion port of the double-screw extruder is 145-170 ℃; in the spinning channel, the temperature of the spinning channel is 75-140 ℃ and the air quantity is 200-800N 3 /h; the draft frequency of the draft is 15-30. The ultra-high molecular weight polyethylene fiber provided by the invention has strong flame retardance, ageing resistance and mechanical properties.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to an ultra-high molecular weight polyethylene fiber and a preparation method and application thereof.
Background
Ultra-high molecular weight polyethylene (UHMWPE) fibers are widely applied to various fields such as aerospace, automobile shells, ship cabins, wind power blades and the like due to the excellent performances of small specific gravity, high specific strength, high specific modulus and the like. Because of its excellent combination of properties, market demand is increasing, and ultra-high molecular weight polyethylene fibers are attracting attention of many researchers with the rapid development of technology today.
The UHMWPE fiber is prepared by gel spinning, the specific strength is more than ten times of that of the steel wire with the same section, the UHMWPE fiber is the highest of all the fibers, and the specific modulus is inferior to that of the carbon fiber. Therefore, it is combined with carbon fiber and aramid fiber and is called world three high performance fiber. Currently, UHMWPE fibers have been used in a variety of fields, such as ballistic helmets, stab resistant gloves, sporting goods, high strength cables, and the like.
Although UHMWPE fiber has excellent performance, the UHMWPE fiber has poor flame retardance, limited oxygen index of only 17.5, belongs to inflammable substances, generates large amount of heat smoke in the combustion process, generates toxic gas, and also generates a molten drop phenomenon to cause secondary disasters, thereby greatly limiting the application and development of the UHMWPE fiber. With the progress of science and technology and the improvement of living standard of people, the safety requirements of people on textiles are gradually improved, and the number of fires caused by the ignition of the textiles is counted every year, so that serious harm is caused to daily life and economic property of people, and the research on the flame retardant property of the textiles is also attracting great attention. The anti-cutting glove, the anti-stabbing clothing, the conveyer belt and the like with the flame retardant function have important functions for protecting users and public safety, can resist fire, and reduce potential safety hazards. The research, development and application of the flame retardant material relate to the problems of economic development, national defense, personnel life safety and the like in China. The application range of the traditional halogen flame retardant such as brominated flame retardant is limited by different degrees along with the increasing environmental protection requirements at present, and the flame retardant UHMWPE fiber prepared by the prior art has the defects of poor flame retardant property, non-durable flame retardant effect, reduced mechanical strength of the flame retardant UHMWPE fiber after the flame retardant is added, and the like.
Therefore, the flame retardant property of the UHMWPE fiber is improved, the mechanical property is stronger, the application range of the flame retardant UHMWPE fiber is widened, and the flame retardant UHMWPE fiber has great practical significance.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, halogen flame retardants such as bromine and the like are required to be added in the process of preparing ultrahigh molecular weight polyethylene fibers, so that the environment-friendly requirement is not met, and the flame retardant property and the mechanical property are poor. The ultra-high molecular weight polyethylene fiber (UHMWPE) prepared by the preparation method has the characteristics of high flame retardance and high strength and high modulus.
In order to achieve the above object, a first aspect of the present invention provides a method for preparing ultra-high molecular weight polyethylene fiber, characterized by comprising the steps of:
step 1, swelling ultra-high molecular weight polyethylene, a flame retardant and an antioxidant in a solvent to obtain a swelling liquid;
step 2, mixing, melting and extruding the swelling liquid in a double-screw extruder to obtain a polymer melt;
step 3, feeding the polymer melt into a spinning channel for drafting to obtain ultra-high molecular weight polyethylene fibers;
wherein the temperature of a charging port of the double-screw extruder is 25-40 ℃, and the temperature of the mixing melting section is 80-180 ℃; the temperature of an extrusion port of the double-screw extruder is 145-170 ℃;
in the spinning channel, the temperature of the spinning channel is 75-140 ℃ and the air quantity is 200-800N 3 /h；
The draft frequency of the draft is 15-30.
In a second aspect, the present invention provides an ultra high molecular weight polyethylene fiber prepared by the above method.
In a third aspect the present invention provides the use of the above method and/or the above ultra high molecular weight polyethylene fiber in the field of labor and/or protection.
Through the technical scheme, the ultra-high molecular weight polyethylene fiber provided by the invention and the preparation method and application thereof have the following beneficial effects:
the UHMWPE fiber is simple in preparation method, the temperature of the mixing melting section is set to 80-180 ℃, the extrusion outlet of the double screw extruder is 145-170 ℃, the spinning channel temperature is 75-140 ℃, and the air quantity is 200-800N 3 And/h, when the drafting frequency of the drafting is 15-30, the breaking strength and modulus of the prepared UHMWPE fiber are obviously improved.
The halogen-free flame retardant added with the UHMWPE fiber is environment-friendly, and can be widely applied to civil and military fields such as various labor protection articles, protection tools and the like.
Detailed Description
The endpoints and any values of the ranges disclosed herein are not limited to the precise range or value, and are understood to encompass values approaching those ranges or values. For numerical ranges, one or more new numerical ranges may be found between the endpoints of each range, between the endpoint of each range and the individual point value, and between the individual point value, in combination with each other, and are to be considered as specifically disclosed herein.
The first aspect of the invention provides a preparation method of ultra-high molecular weight polyethylene fibers, which is characterized by comprising the following steps:
step 1, swelling ultra-high molecular weight polyethylene and an auxiliary agent selected from a flame retardant and an antioxidant in a solvent to obtain a swelling liquid;
step 2, mixing, melting and extruding the swelling liquid in a double-screw extruder to obtain a polymer melt;
step 3, feeding the polymer melt into a spinning channel for drafting to obtain polymer fibers;
wherein the temperature of a charging port of the double-screw extruder is 25-40 ℃, and the temperature of the mixing melting section is 80-180 ℃; the temperature of an extrusion port of the double-screw extruder is 145-170 ℃;
in the spinning channel, the temperature of the spinning channel is 75-140 ℃ and the air quantity is 200-800N 3 /h；
The draft frequency of the draft is 15-30.
In the invention, the ultra-high molecular weight polyethylene, the flame retardant and the antioxidant are swelled in the solvent, so that the long chain of the ultra-high molecular weight polyethylene is fully unfolded, all the auxiliary agents and the ultra-high molecular weight polyethylene powder form a homogeneous system in the solvent, and the dissolution time of the ultra-high molecular weight polyethylene can be effectively shortened.
In the invention, when the temperature of a feed inlet of a double-screw extruder is 25-40 ℃, the temperature of a mixing melting section is 80-180 ℃; the temperature of an extrusion port of the double-screw extruder is 145-170 ℃; and the spinning channel temperature is 75-140 ℃ and the air quantity is 200-800N 3 At/h, it is possible to make the UHMWPE fibers produced with stronger mechanical properties and lower moisture content.
In the present invention, when the draft frequency is 15 to 30, the subsequent spinnability can be increased.
According to the present invention, the kneading and melting section is a plurality of kneading and melting sections.
Further, the mixing melting section is 5-7 mixing melting sections;
wherein the temperature of the first mixing melting section is 80-90 ℃, the temperature of the second mixing melting section is 110-130 ℃, the temperature of the third mixing melting section is 145-160 ℃, the temperature of the fourth mixing melting section is 160-170 ℃, the temperature of the fifth mixing melting section is 160-170 ℃, the temperature of the sixth mixing melting section is 160-170 ℃, and the temperature of the seventh mixing melting section is 160-170 ℃.
In the invention, when the mixing and melting are 6 mixing and melting sections, and the temperatures of the 6 mixing and melting sections respectively meet the above ranges, the polymer can achieve better dispersing effect, the evenness rate is reduced, and the evenness rate is not more than 3%.
In the present invention, yarn evenness refers to the degree of uniformity of thickness or weight of yarn, sliver or roving in axially shorter segments, called yarn evenness, also called yarn evenness. The evenness rate has a certain influence on the strength of the fiber, and can influence the quality of yarn or fabric in the subsequent processing, and if the evenness rate is too high, defects can appear to increase the breakage rate, so that the production is influenced.
According to the invention, the draft is a multi-stage draft, preferably a 3-5 stage draft;
wherein, the drafting frequency of the first section of drafting is 15-20, the drafting frequency of the second section of drafting is 20-25, the third drafting frequency is 20-25, the fourth drafting frequency is 25-30, and the fifth drafting frequency is 25-30.
In the invention, when the drafting section is 4-section drafting and the frequency of the 4-section drafting respectively meets the above range, ordered folding chains of the nascent fiber can be further arranged along the longitudinal direction, thereby improving the strength of the fiber and reducing the elongation.
In the invention, the elongation is in the range of 4.3% -5.3%, the performance is better, the fiber is easy to break when the elongation is too low, and the strength modulus is worse when the elongation is too high.
According to the invention, the preparation method further comprises the following steps: and removing the solvent in the polymer melt, and sending the polymer melt with the solvent removed into a spinning channel for drafting.
In the invention, before the polymer melt enters the spinning channel, the solvent is removed, which is beneficial to improving the fiber strength of the polymer melt in the spinning process.
In the present invention, the apparatus for removing the solvent is not required as long as the solvent can be removed efficiently, and for example, the apparatus for removing the solvent may be a loop-cooled jacket.
According to the invention, the conditions for removing the solvent are as follows: the temperature is 80-140 ℃, the temperature of side blowing is 90-120 ℃, and the air quantity of side blowing is 400-800N 3 /h。
According to the invention, the solvent is selected from decalin.
In the invention, decalin is adopted as a solvent, and the decalin has high volatility, so that the decalin is not only favorable for being removed from a system, but also can ensure that the prepared UHMWPE fiber has low moisture content (not more than 3 wt%) and can realize recycling.
According to the invention, the swelling conditions are: swelling temperature is 85-100deg.C, and swelling time is 1.5-3.5 hr.
According to the invention, the ultra-high molecular weight polyethylene is used in an amount of 5 to 9wt%, preferably 6 to 7wt%, based on the total weight of the swelling liquid; the flame retardant is used in an amount of 0.03 to 0.3wt%, preferably 0.03 to 0.1wt%; the antioxidant is used in an amount of 0.5 to 0.9wt%, preferably 0.6 to 0.8wt%.
In the present invention, the amount of the solvent is not particularly limited, and may be an amount conventionally used in the art, so that each component satisfies the above-mentioned range.
Further, when the dosage of the ultra-high molecular weight polyethylene, the flame retardant and the antioxidant meets the above range, the prepared UHMWPE fiber has stronger flame retardant property and ageing resistance.
According to the invention, the flame retardant is a phosphate flame retardant, preferably selected from resorcinol bis (diphenyl phosphate) and/or bisphenol a bis (diphenyl phosphate).
According to the present invention, the antioxidant is at least one selected from the group consisting of stearyl β (4-hydroxy-3, 5-di-t-butylphenyl) propionate, tris (nonylphenol) phosphite, tris (3, 5-di-t-butyl-4-hydroxybenzyl) isocyanurate, bis (2, 4-di-t-butylphenol) pentaerythritol diphosphite, didodecyl thiodipropionate and tris (2, 4-di-t-butylphenyl) phosphite.
In the invention, the flame retardant is selected from phosphate flame retardants which are decomposed into glass-shaped substances not easy to volatilize at the combustion temperature, and the glass-shaped substances are wrapped on the surface of a polymer to form a isolating film so as to achieve the flame retardant effect, so that the flame retardant has lasting flame retardant effect, has the characteristics of good compatibility with a polymer base material, water resistance, weather resistance, heat resistance, migration resistance and the like, belongs to environment-friendly flame retardants, and ensures that the prepared fiber has wider application range.
In the invention, when resorcinol bis (diphenyl phosphate) and bisphenol A bis (diphenyl phosphate) exist at the same time, the ratio of the two is 1: (1-3).
According to the invention, the ultra-high molecular weight polyethylene has a viscosity average molecular weight of 500 to 600 tens of thousands, preferably 550 to 600 tens of thousands.
According to a preferred embodiment of the invention:
step 1, swelling 5-9wt% of ultra-high molecular weight polyethylene and an auxiliary agent selected from a flame retardant and an antioxidant in decalin at a temperature of 85-100 ℃ for 1.5-3.5h to obtain a swelling liquid;
step 2, sequentially carrying out 6-section mixing melting at 80-90 ℃,110-130 ℃,145-160 ℃,160-170 ℃,160-170 ℃ and 160-170 ℃ on the swelling liquid in a double screw extruder with a feed inlet temperature of 25-40 ℃ and then extruding to obtain a high polymer melt at 150-165 ℃;
step 3, the polymer melt is subjected to a temperature of 80-140 ℃, a side blowing temperature of 90-120 ℃ and a side blowing air quantity of 400-800N 3 Removing solvent in the ring cooling jacket at 75-140 deg.C with air flow rate of 200-800N 3 And (3) drafting in 4 sections of drafting rollers with the frequency of 15-20, 20-25, 20-25 and 25-30 respectively in the spinning channel per hour to obtain the ultra-high molecular weight polyethylene fiber.
In a second aspect, the present invention provides an ultra high molecular weight polyethylene fiber prepared by the above method.
In a third aspect, the present invention provides an application of the method and/or the ultra-high molecular weight polyethylene fiber in the fields of labor protection articles, protection articles and the like with flame retardant property.
The present invention will be described in detail by examples. In the following examples of the present invention,
breaking strength was measured by GB/T19975-2005 method;
modulus was measured by GB/T19975-2005 method;
elongation was measured by the GB/T29554-2013 method;
UL94 ratings were obtained by UL94 HB flammability standard methods;
limiting Oxygen Index (LOI) is measured by an oxygen index meter instrument;
moisture content was measured by a vacuum drying oven instrument;
the evenness rate is measured by a GB/T14346-2015 method;
the raw materials are all commercial products.
Example 1
Step 1, dissolving 6wt% of ultra-high molecular weight polyethylene, 0.1wt% of resorcinol bis (diphenyl phosphate), 0.1wt% of bisphenol A bis (diphenyl phosphate) and 0.7wt% of tris (nonylphenol) phosphite in decalin, and swelling for 3 hours at the temperature of 95 ℃ to obtain a swelling liquid;
step 2, sequentially carrying out 6-section mixing melting at the temperature of 85 ℃,125 ℃,150 ℃,165 ℃,165 ℃ and 165 ℃ on the swelling liquid in a double-screw extruder with the temperature of 25 ℃ at a charging port, and then extruding to obtain a polymer melt at 146 ℃;
step 3, the temperature of the polymer melt is 105 ℃, the temperature of side blowing is 115 ℃, and the air quantity of side blowing is 610N 3 The solvent is removed by a ring cooling jacket at the temperature of 80 ℃ and the air quantity of 255N 3 The spinning channel of/h is respectively drafted in 4 sections of draft rollers with the frequencies of 19.8, 20.5, 20.5 and 26.5, and the ultra-high molecular weight polyethylene fiber is obtained.
The resulting ultra-high molecular weight polyethylene fibers were tested for breaking strength, modulus, UL94 rating and limiting oxygen index LOI results as shown in table 1.
Example 2
In accordance with the method of example 1, resorcinol bis (diphenyl phosphate) was used in an amount of 0.03wt% and bisphenol A bis (diphenyl phosphate) was used in an amount of 0.03wt%.
The resulting ultra-high molecular weight polyethylene fibers were tested for breaking strength, modulus, UL94 rating and limiting oxygen index LOI results as shown in table 1.
Example 3
The procedure of example 1 was followed except that the feed inlet temperature of the twin-screw extruder was 35 ℃.
The resulting ultra-high molecular weight polyethylene fibers were tested for breaking strength, modulus, UL94 rating and limiting oxygen index LOI results as shown in table 1.
Example 4
The procedure of example 1 was followed except that the 6-stage kneading was conducted at a temperature of 90℃and 130℃and 160℃and 170℃and 170℃respectively.
The resulting ultra-high molecular weight polyethylene fibers were tested for breaking strength, modulus, UL94 rating and limiting oxygen index LOI results as shown in table 1.
Example 5
The method of example 1 was repeated except that the ultra-high molecular weight polyethylene fiber obtained at 170℃was subjected to the test for extrusion outlet of the twin-screw extruder, and the breaking strength, modulus, UL94 rating and limiting oxygen index LOI were as shown in Table 1.
Example 6
In the same manner as in example 1, except that the spinning shaft temperature was 100℃and the air volume was 380N 3 /h。
The resulting ultra-high molecular weight polyethylene fibers were tested for breaking strength, modulus, UL94 rating and limiting oxygen index LOI results as shown in table 1.
Example 7
In accordance with the method of example 1, the spinning shafts were drawn in 4-stage drawing rolls with frequencies of 20, 23.5, 23.5, 28, respectively.
The resulting ultra-high molecular weight polyethylene fibers were tested for breaking strength, modulus, UL94 rating and limiting oxygen index LOI results as shown in table 1.
Example 8
The procedure of example 1 was followed except that the mixing and melting zone was 5 zones, each at 85 ℃,125 ℃,150 ℃,165 ℃,165 ℃.
The resulting ultra-high molecular weight polyethylene fibers were tested for breaking strength, modulus, UL94 rating and limiting oxygen index LOI results as shown in table 1.
Example 9
In accordance with the method of example 1, the spinning shafts were drawn in 5-stage drawing rolls with frequencies of 19.8, 20.5, 20.5, 26.5, 28.5, respectively.
The resulting ultra-high molecular weight polyethylene fibers were tested for breaking strength, modulus, UL94 rating and limiting oxygen index LOI results as shown in table 1.
Comparative example 1
The procedure of example 1 was followed except that no flame retardant was added.
The resulting ultra-high molecular weight polyethylene fibers were tested for breaking strength, modulus, UL94 rating and limiting oxygen index LOI results as shown in table 1.
Comparative example 2
The procedure of example 1 was followed except that no antioxidant was added.
The resulting ultra-high molecular weight polyethylene fibers were tested for breaking strength, modulus, UL94 rating and limiting oxygen index LOI results as shown in table 1.
Comparative example 3
In accordance with the method of example 1, except that the swelling treatment was not performed.
The resulting ultra-high molecular weight polyethylene fibers were tested for breaking strength, modulus, UL94 rating and limiting oxygen index LOI results as shown in table 1.
Comparative example 4
In the same manner as in example 1, except that the spinning shaft temperature was 160℃and the air volume was 850N 3 /h。
The resulting ultra-high molecular weight polyethylene fibers were tested for breaking strength, modulus, UL94 rating and limiting oxygen index LOI results as shown in table 1.
Comparative example 5
The procedure of example 1 was followed except that the 6-stage kneading was conducted at a temperature of 95℃and 135℃and 165℃and 185℃and 185℃respectively.
The resulting ultra-high molecular weight polyethylene fibers were tested for breaking strength, modulus, UL94 rating and limiting oxygen index LOI results as shown in table 1.
Comparative example 6
In accordance with the method of example 1, the spinning shafts were drawn in 4-stage drawing rolls with frequencies of 22, 27, 27, 32, respectively.
The resulting ultra-high molecular weight polyethylene fibers were tested for breaking strength, modulus, UL94 rating and limiting oxygen index LOI results as shown in table 1.
Test case
The ultra-high molecular weight polyethylene fibers prepared in the examples and the comparative examples are subjected to aging test in a phytoaging tester, and the breaking strength, modulus and aging rate of the aged ultra-high molecular weight polyethylene fibers a And aging rate b The results are shown in Table 2. Wherein the aging rate calculation formula is: (performance parameters before aging-performance parameters after aging)/performance parameters before aging 100%.
TABLE 1
TABLE 2 ultra high molecular weight polyethylene fiber Properties after aging
Note that: aging rate a : the change in fracture strength of the UHMWPE fibers after aging compared to before aging; aging rate b : the modulus of the UHMWPE fibers after aging is changed compared to that before aging. The higher the ageing rate, the poorer the ageing resistance.
As can be seen from Table 1, the results of examples 1 to 7, compared with comparative examples 1 to 2, in which no flame retardant and no antioxidant are added, can demonstrate that the UL94 rating of the UHMWPE fiber obtained by the preparation method of the present invention is improved, the limiting oxygen index is remarkably improved, and the UHMWPE fiber has excellent flame retardance, aging resistance and high mechanical properties.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, a number of simple variants of the technical solution of the invention are possible, including combinations of the individual technical features in any other suitable way, which simple variants and combinations should likewise be regarded as being disclosed by the invention, all falling within the scope of protection of the invention.
Claims (10)
1. A method for preparing ultra-high molecular weight polyethylene fibers, comprising the steps of:
step 1, swelling ultra-high molecular weight polyethylene, a flame retardant and an antioxidant in a solvent to obtain a swelling liquid;
step 2, mixing, melting and extruding the swelling liquid in a double-screw extruder to obtain a polymer melt;
step 3, feeding the polymer melt into a spinning channel for drafting to obtain ultra-high molecular weight polyethylene fibers;
wherein the temperature of a charging port of the double-screw extruder is 25-40 ℃, and the temperature of the mixing melting section is 80-180 ℃; the temperature of an extrusion port of the double-screw extruder is 145-170 ℃;
in the spinning channel, the temperature of the spinning channel is 75-140 ℃ and the air quantity is 200-800N 3 /h；
The draft frequency of the draft is 15-30.
2. The production method according to claim 1, wherein the kneading melting section is a plurality of kneading melting sections;
preferably, the mixing melting section is 5-7 mixing melting sections;
wherein the temperature of the first mixing melting section is 80-90 ℃, the temperature of the second mixing melting section is 110-130 ℃, the temperature of the third mixing melting section is 145-160 ℃, the temperature of the fourth mixing melting section is 160-170 ℃, the temperature of the fifth mixing melting section is 160-170 ℃, the temperature of the sixth mixing melting section is 160-170 ℃, and the temperature of the seventh mixing melting section is 160-170 ℃;
the drafting is multi-stage drafting, preferably 3-5-stage drafting;
wherein, the drafting frequency of the first section of drafting is 15-20, the drafting frequency of the second section of drafting is 20-25, the third drafting frequency is 20-25, the fourth drafting frequency is 25-30, and the fifth drafting frequency is 25-30.
3. The production method according to claim 1 or 2, wherein the production method further comprises: removing the solvent in the polymer melt, and feeding the polymer melt with the solvent removed into a spinning channel for drafting;
the conditions for removing the solvent are as follows: the temperature is 80-140 ℃, the temperature of side blowing is 90-120 ℃, and the air quantity of side blowing is 400-800N 3 /h。
4. A production process according to any one of claims 1 to 3, wherein the solvent is selected from decalin.
5. The production method according to any one of claims 1 to 4, wherein the swelling condition is: swelling temperature is 85-100deg.C, and swelling time is 1.5-3.5 hr.
6. The preparation method according to any one of claims 1 to 5, wherein the ultra-high molecular weight polyethylene is used in an amount of 5 to 9wt%, preferably 6 to 7wt%, based on the total weight of the swelling liquid; the flame retardant is used in an amount of 0.03 to 0.3wt%, preferably 0.03 to 0.1wt%; the antioxidant is used in an amount of 0.5 to 0.9wt%, preferably 0.6 to 0.8wt%.
7. The preparation method according to any one of claims 1 to 6, wherein the flame retardant is a phosphate flame retardant, preferably selected from resorcinol bis (diphenyl phosphate) and/or bisphenol a bis (diphenyl phosphate);
and/or the antioxidant is selected from at least one of beta- (4-hydroxy-3, 5-di-tert-butylphenyl) propanoate, tris (nonylphenol) phosphite, tris (3, 5-di-tert-butyl-4-hydroxybenzyl) isocyanurate, bis (2, 4-di-tert-butylphenol) pentaerythritol diphosphite, didodecyl thiodipropionate and tris (2, 4-di-tert-butylphenyl) phosphite.
8. The preparation method according to any one of claims 1 to 7, wherein the ultra-high molecular weight polyethylene has a viscosity average molecular weight of 500 to 600 ten thousand, preferably 550 to 600 ten thousand.
9. An ultra-high molecular weight polyethylene fiber produced by the method of any one of claims 1-8.
10. A process for the preparation of ultra high molecular weight polyethylene fibres as claimed in any one of claims 1 to 8 and/or the use of ultra high molecular weight polyethylene fibres as claimed in claim 9 in the field of labor and/or protection products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111254228.XA CN116024681A (en) | 2021-10-27 | 2021-10-27 | Ultrahigh molecular weight polyethylene fiber, and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111254228.XA CN116024681A (en) | 2021-10-27 | 2021-10-27 | Ultrahigh molecular weight polyethylene fiber, and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116024681A true CN116024681A (en) | 2023-04-28 |
Family
ID=86074675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111254228.XA Pending CN116024681A (en) | 2021-10-27 | 2021-10-27 | Ultrahigh molecular weight polyethylene fiber, and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116024681A (en) |
-
2021
- 2021-10-27 CN CN202111254228.XA patent/CN116024681A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107313126B (en) | Method for producing graphene modified polyamide-6 fiber through high-speed spinning | |
| KR101363813B1 (en) | Polyethylene fiber and method for production thereof | |
| EP2142689B1 (en) | Process for the preparation of polymer yarns from ultra high molecular weight homopolymers or copolymers, polymer yarns, molded polymer parts, and the use of polymer yarns | |
| WO2020052360A1 (en) | Method for preparing high-strength and high-modulus polyethylene fiber | |
| CN113529200A (en) | Preparation method of anti-cutting polyethylene fiber | |
| CN112111802A (en) | Ultrahigh-strength ultrahigh molecular weight polyethylene fiber and manufacturing method thereof | |
| CN112695390A (en) | High-elongation low-modulus para-aramid fiber and preparation method thereof | |
| CN108842203A (en) | A kind of preparation method of halogen-free flameproof PETG composite fibre | |
| CN114574996B (en) | Flame-retardant composite polyester filament yarn and processing technology thereof | |
| CN110528109B (en) | High-strength flame-retardant polyester industrial yarn and preparation method thereof | |
| CN112760737B (en) | Preparation method of poly (p-phenylene-benzobisoxazole) fibers | |
| CN115011078A (en) | Flame-retardant environment-friendly PET plastic and preparation method thereof | |
| CN109161973A (en) | The production technology of acid fiber by polylactic | |
| CN116024681A (en) | Ultrahigh molecular weight polyethylene fiber, and preparation method and application thereof | |
| CN111621150B (en) | Flame-retardant nylon composition and preparation method thereof | |
| CN108034231A (en) | A kind of outdoor used in air exchange fan high-low temperature resistant high-dimensional stability and the PA composite materials of anti-UV agings and preparation method thereof | |
| CN104404640B (en) | A kind of drafting method of ultra-high molecular weight polyethylene precursor fiber | |
| CN112030257B (en) | Halogen-free flame-retardant chinlon 66 bulked filament carpet yarn and preparation method thereof | |
| CN109402778A (en) | A kind of manufacture craft of 56 fiber of biology base nylon with flame retarding function | |
| CN114293282A (en) | Preparation method of antioxidant polyphenylene sulfide fiber and prepared antioxidant polyphenylene sulfide fiber | |
| CN103361832B (en) | The BLENDED FABRIC of PEI and anti-flaming viscose | |
| CN107541802A (en) | Short fibre of soft, wear-resistant and its production and use | |
| US20220033996A1 (en) | Spun abpbi fibers and process for preparing the same | |
| CN112442753A (en) | Preparation method of novel anti-cutting material | |
| CN110747532A (en) | High-anti-fouling low-temperature-resistant polyester monofilament and production method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |