CN115559016B - Environment-friendly polyethylene fiber with high uniformity and preparation method thereof - Google Patents
Environment-friendly polyethylene fiber with high uniformity and preparation method thereof Download PDFInfo
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- CN115559016B CN115559016B CN202210069765.5A CN202210069765A CN115559016B CN 115559016 B CN115559016 B CN 115559016B CN 202210069765 A CN202210069765 A CN 202210069765A CN 115559016 B CN115559016 B CN 115559016B
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- 239000000835 fiber Substances 0.000 title claims abstract description 216
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 40
- -1 polyethylene Polymers 0.000 title claims abstract description 40
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000010902 straw Substances 0.000 claims abstract description 31
- 229920000742 Cotton Polymers 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 241000196324 Embryophyta Species 0.000 claims description 102
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims description 69
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims description 69
- 206010042674 Swelling Diseases 0.000 claims description 35
- 230000008961 swelling Effects 0.000 claims description 35
- 238000009987 spinning Methods 0.000 claims description 27
- 239000002904 solvent Substances 0.000 claims description 26
- 239000012752 auxiliary agent Substances 0.000 claims description 23
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical group O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 21
- 244000198134 Agave sisalana Species 0.000 claims description 19
- 239000006184 cosolvent Substances 0.000 claims description 16
- 239000000314 lubricant Substances 0.000 claims description 15
- 239000003921 oil Substances 0.000 claims description 10
- 238000004090 dissolution Methods 0.000 claims description 8
- 239000003350 kerosene Substances 0.000 claims description 8
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 2
- 239000003963 antioxidant agent Substances 0.000 claims description 2
- 230000003078 antioxidant effect Effects 0.000 claims description 2
- 150000001924 cycloalkanes Chemical class 0.000 claims description 2
- 239000004014 plasticizer Substances 0.000 claims description 2
- 239000003381 stabilizer Substances 0.000 claims description 2
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 239000004705 High-molecular-weight polyethylene Substances 0.000 abstract 1
- 208000012886 Vertigo Diseases 0.000 description 24
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 12
- NNBZCPXTIHJBJL-AOOOYVTPSA-N cis-decalin Chemical compound C1CCC[C@H]2CCCC[C@H]21 NNBZCPXTIHJBJL-AOOOYVTPSA-N 0.000 description 12
- 238000002156 mixing Methods 0.000 description 8
- 229920001911 maleic anhydride grafted polypropylene Polymers 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 239000002244 precipitate Substances 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 238000011160 research Methods 0.000 description 4
- 244000025254 Cannabis sativa Species 0.000 description 3
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 3
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 3
- 235000009120 camo Nutrition 0.000 description 3
- 235000005607 chanvre indien Nutrition 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 239000011487 hemp Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 238000006065 biodegradation reaction Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 240000008564 Boehmeria nivea Species 0.000 description 1
- 240000000491 Corchorus aestuans Species 0.000 description 1
- 235000011777 Corchorus aestuans Nutrition 0.000 description 1
- 235000010862 Corchorus capsularis Nutrition 0.000 description 1
- 244000020551 Helianthus annuus Species 0.000 description 1
- 235000003222 Helianthus annuus Nutrition 0.000 description 1
- 240000000797 Hibiscus cannabinus Species 0.000 description 1
- 240000006240 Linum usitatissimum Species 0.000 description 1
- 235000004431 Linum usitatissimum Nutrition 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 244000098338 Triticum aestivum Species 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000001891 gel spinning Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005297 material degradation process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000001814 pectin Substances 0.000 description 1
- 235000010987 pectin Nutrition 0.000 description 1
- 229920001277 pectin Polymers 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/02—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from cellulose, cellulose derivatives, or proteins
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Artificial Filaments (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention belongs to the technical field of C08L, and particularly relates to an environment-friendly polyethylene fiber with high uniformity and a preparation method thereof. The environment friendly polyethylene fiber with high homogeneity is prepared with super high molecular weight polyethylene, plant fiber, compatilizer and assistant. The polyethylene fiber prepared by the method combines plant fiber in the treatment process, and particularly the material like cotton straw fiber can reduce the discarding of waste, avoid the environmental pollution caused by incineration treatment, meet the environment-friendly requirement, and has the advantages of natural and renewable preparation raw materials and higher popularization value.
Description
Technical Field
The invention belongs to the technical field of C08L, and particularly relates to an environment-friendly polyethylene fiber with high uniformity and a preparation method thereof.
Background
The ultra-high molecular weight polyethylene has great application prospect in medical science, aerospace engineering and industrial application because of excellent mechanical property, heat resistance and other properties. However, with the development of society, the development of degradable ultra-high molecular weight polyethylene without reducing the performance of the polyethylene is an important point in the current development.
The technology related to the research is relatively few at the present stage, and the optimization and upgrading are performed based on the preparation method of the ultra-high molecular weight polyethylene fiber disclosed in the prior art, so that the method is one research direction at present. For example, the Chinese patent publication No. CN104419996A discloses that a uniform gel solution is prepared by specific temperature and time, and a degradable ultra-high molecular weight polyethylene fiber is prepared. However, the technology of degrading the ultra-high molecular weight polyethylene fiber is not disclosed in the disclosed patent, so that on the basis of the current research situation, the improvement of the degradation performance of the prepared fiber is the direction that researchers need to pay a lot of heart blood and labor at present on the premise of not reducing the mechanical property of the ultra-high molecular weight polyethylene fiber.
Disclosure of Invention
In order to solve the technical problems, the first aspect of the invention provides an environment-friendly polyethylene fiber with high uniformity, and the preparation raw materials comprise ultra-high molecular weight polyethylene, plant fiber, compatilizer and auxiliary agent.
In some preferred embodiments, the auxiliary agent comprises at least one of a lubricant, an antioxidant, an ultraviolet absorber, a plasticizer, and a stabilizer.
In some preferred embodiments, the adjuvant comprises a lubricant.
The lubricant described in the present application is not particularly limited as long as it can achieve its own lubricating effect.
Preferably, the lubricant is a C wax.
In some preferred embodiments, the compatibilizing agent comprises maleic anhydride grafted polypropylene.
Maleic anhydride grafted polypropylene, grade 900P, purchased from Jie New Material Co., ltd.
In some preferred embodiments, the ultra-high molecular weight polyethylene has a viscosity average molecular weight of 200 to 500 tens of thousands.
In some preferred embodiments, the ultra-high molecular weight polyethylene has a viscosity average molecular weight of 250 tens of thousands, 350 tens of thousands and 450 tens of thousands.
In some preferred embodiments, the ultra-high molecular weight polyethylene having a viscosity average molecular weight of 250 tens of thousands, 350 tens of thousands and 450 tens of thousands is present in a weight ratio of (5-8): 1: (0.5-2).
More preferably, the weight ratio of the ultra-high molecular weight polyethylene with the viscosity average molecular weight of 250 ten thousand, 350 ten thousand and 450 ten thousand is 6:1:0.9.
in the experimental process, the applicant finds that the addition of ultra-high molecular weight polyethylene with different viscosity average molecular weights has a great influence on the preparation of subsequent spinning solutions and the compatibility of the system through a great number of creative experimental researches. In the system, the uniformity of the ultra-high molecular weight polyethylene with different molecular weights in preparing spinning solution can be greatly improved through mixing and compounding, and under the compounding condition, the weight ratio of the ultra-high molecular weight polyethylene with the viscosity average molecular weight of 250 ten thousand, 350 ten thousand and 450 ten thousand is 6:1: at 0.9, better compatibility of the ultra high molecular weight polyethylene with the plant fiber may be promoted, and the reason for this phenomenon is presumed by the applicant to be probably because: in the scheme provided by the application, winding randomness among molecular chains can be greatly slowed down, so that the uniformity of the spinning solution is ensured;
on the other hand, with the addition of the plant fiber, the plant fiber can form a coordination with the ultrahigh molecular weight polyethylene molecular chains with different chain lengths in the system, and under the condition of the existence of the proportion, the fluidity of the system is relatively large, so that the adhesion among the molecular chains can be promoted, and the compatibility of the molecular chains is promoted.
In some preferred embodiments, the plant fiber is selected from at least one of bamboo fiber, hemp fiber, and straw fiber.
In some preferred embodiments, the hemp fibers include at least one of ramie fibers, jute fibers, green hemp fibers, sisal fibers, flax fibers, and kenaf fibers.
In some preferred embodiments, the straw fibers comprise at least one of corn straw fibers, wheat straw fibers, cotton straw fibers, sunflower straw fibers, rice straw fibers.
In some preferred embodiments, the plant fiber is selected from sisal fiber and cotton straw fiber.
Further preferably, the weight ratio of the sisal fiber to the cotton straw fiber is 1: (2-10).
More preferably, the weight ratio of the sisal fiber to the cotton straw fiber is 1:3.5.
in the system, in order to further improve the biodegradability of the prepared ultra-high molecular weight polyethylene fiber, the applicant finds that when natural fibers, especially plant fibers, are added, the ultra-high molecular weight polyethylene fiber can be endowed with certain biodegradability, especially when the added plant fibers are sisal fibers and cotton straw fibers, and the weight ratio of the sisal fibers to the cotton straw fibers is ensured to be 1: (2-10) the biodegradability of the ultra-high molecular weight polyethylene fibers can be improved without decreasing the tensile strength thereof, and the reason for this phenomenon is presumed to be because: sisal fiber is used as fiber with good wear resistance and acid and alkali corrosion resistance, and the sisal fiber is mixed with cotton straw fiber, so that the sisal fiber not only can play a role in enhancing the tensile property of the ultra-high molecular weight polyethylene fiber under the synergistic effect, but also can make up for the defect of loosening of the cotton straw fiber, ensure that the mixing weight of the sisal fiber is within the range of 20-30wt% of the ultra-high molecular weight polyethylene, not only can reduce the adding amount of the ultra-high molecular weight polyethylene, but also can solve the problems of waste and combustion of the cotton straw, not only meets the green environment-friendly requirement, but also can improve the biodegradability of the ultra-high molecular weight polyethylene fiber under the premise of not reducing the tensile strength of the ultra-high molecular weight polyethylene fiber.
In some preferred embodiments, the plant fiber is a modified plant fiber.
In some preferred embodiments, the modified plant fibers include alkali modified plant fibers, silane coupling agent modified plant fibers, maleic anhydride grafted plant fibers.
More preferably, the modified plant fiber is selected from maleic anhydride grafted plant fibers.
The preparation method of the maleic anhydride grafted plant fiber comprises the following steps:
cutting plant fiber, adding into maleic anhydride solution, reacting at 60-90deg.C, adding hydrogen peroxide dropwise into the reaction container, reacting for 1-5 hr, pouring out precipitate, washing with water, and drying.
Through a great number of creative experiments of the applicant in the experimental process, the sisal fiber and the cotton straw fiber which are modified by maleic anhydride in the body are originally wrapped by pectin, lignin and the like, and the fiber fibrils can be exposed in the system, so that the probability of solvent contact is increased, further fusion can be formed in the cosolvent when the sisal fiber and the cotton straw fiber are mixed with the ultra-high molecular weight polyethylene, and the stability of the sisal fiber and the cotton straw fiber in the cosolvent treatment process can be further improved due to the existence of hydrogen bonding, and the separation of molecular chains is avoided.
In some preferred embodiments, the preparation raw materials comprise, in parts by weight: 50-70 parts of ultra-high molecular weight polyethylene, 10-20 parts of plant fiber, 0.1-2 parts of compatilizer and 0.1-5 parts of auxiliary agent.
The second aspect of the invention provides a preparation method of an environment-friendly polyethylene fiber with high uniformity, which comprises the following steps:
1) Modifying plant fibers;
2) Adding ultra-high molecular weight polyethylene, plant fibers, a compatilizer and an auxiliary agent into a cosolvent to perform pre-swelling treatment, and adding the pre-swelling treatment into the solvent to obtain a swelling solution; carrying out thermal dissolution treatment on the swelling solution to obtain spinning solution;
3) Spinning the obtained spinning solution to obtain the ultra-high molecular weight polyethylene fiber.
In some preferred embodiments, the solvent described in step 1) is selected from alkanes and/or cycloalkanes.
In some preferred embodiments, the solvent is selected from at least one of white oil, kerosene, solvent oil.
In some preferred embodiments, the co-solvent comprises cis-decalin.
In some preferred embodiments, the cis-decalin is added in an amount of 10 to 20 times the total weight of the ultra-high molecular weight polyethylene and the plant fiber.
In some preferred embodiments, the solvent comprises white oil and kerosene in a weight ratio of 2:1.
in some preferred embodiments, the specific operation of step 2) in the method of preparing an environmentally friendly polyethylene fiber comprises the steps of:
mixing ultra-high molecular weight polyethylene, plant fiber, compatilizer and auxiliary agent, adding into cosolvent at 100-120 ℃, swelling for 1-2 hours under the condition of 3-8MPa, and completing pre-swelling treatment;
adding the pre-swelled solution into a solvent to obtain a swelling solution; and carrying out heat dissolution treatment on the ultra-high molecular weight polyethylene swelling solution to obtain a spinning solution.
The subsequent heat-melting treatment mode and spinning method in the application are all common gel spinning treatment processes in the field, and are not particularly limited.
The beneficial effects are that: compared with the prior art, the environment-friendly polyethylene fiber with high uniformity provided by the invention has the following advantages:
1. the environment-friendly polyethylene fiber with high uniformity has higher tensile property, and the polyethylene fiber prepared by the design of the application has certain degradation property, and the application field and the application value are enlarged on the premise of not reducing the mechanical property of the polyethylene fiber;
2. the polyethylene fiber prepared by the method combines plant fiber in the treatment process, and particularly the material like cotton straw fiber can reduce the discarding of waste, avoid the environmental pollution caused by incineration treatment, meet the environment-friendly requirement, and has the advantages of natural and renewable preparation raw materials and higher popularization value;
3. the polyethylene fiber prepared by the method is subjected to pre-swelling treatment before swelling, so that the ultra-high molecular weight polyethylene and the plant fiber can be fully and uniformly swelled, a foundation is laid for forming a spinning solution after the swelling, and the phenomenon that the prepared fiber is broken or not smooth can be avoided.
Detailed Description
Examples
Example 1
The environment-friendly polyethylene fiber with high uniformity is prepared from the following raw materials in parts by weight: 60 parts of ultra-high molecular weight polyethylene, 15 parts of plant fiber, 1 part of compatilizer and 0.5 part of auxiliary agent.
The viscosity average molecular weight of the ultra-high molecular weight polyethylene is 250 ten thousand, 350 ten thousand and 450 ten thousand, and the weight ratio is 6:1:0.9, purchased from Dongguan city essence macro polymer material Co., ltd;
the plant fiber is modified plant fiber, the modified plant fiber is maleic anhydride grafted plant fiber, wherein the plant fiber is sisal fiber and cotton straw fiber, and the weight ratio of the plant fiber to the cotton straw fiber is 1:3.5;
the preparation method of the maleic anhydride grafted plant fiber comprises the following steps:
cutting 30 parts of plant fibers, adding the cut plant fibers into 100 parts of maleic anhydride solution, reacting at 75 ℃, dropwise adding 2.5 parts of hydrogen peroxide into a reaction container, continuously reacting for 2 hours, pouring out precipitate, washing with water, and drying for later use.
The compatilizer is maleic anhydride grafted polypropylene with the mark of 900P and is purchased from Jie New Material Co., ltd.
The auxiliary agent is a lubricant, and the lubricant is C wax.
The preparation method of the environment-friendly polyethylene fiber with high uniformity comprises the following steps:
1) Modifying plant fibers;
2) Mixing ultra-high molecular weight polyethylene, plant fiber, compatilizer and auxiliary agent, then adding the mixture into cosolvent at 115 ℃, and swelling for 2 hours under the condition of 6MPa to complete pre-swelling treatment;
adding the pre-swelled solution into a solvent to obtain a swelling solution; carrying out heat dissolution treatment on the ultra-high molecular weight polyethylene swelling solution to obtain a spinning solution;
3) Spinning the obtained spinning solution to obtain the polyethylene fiber.
The cosolvent is cis-decalin, and the addition amount of the cis-decalin is 15 times of the total weight of the ultra-high molecular weight polyethylene and the plant fiber.
The addition amount of the solvent is 25 times of the total weight of the ultra-high molecular weight polyethylene and the plant fiber, and the solvent comprises white oil and kerosene, and the weight ratio is 2:1.
example 2
The environment-friendly polyethylene fiber with high uniformity is prepared from the following raw materials in parts by weight: 60 parts of ultra-high molecular weight polyethylene, 15 parts of plant fiber, 1 part of compatilizer and 0.5 part of auxiliary agent.
The viscosity average molecular weight of the ultra-high molecular weight polyethylene is 250 ten thousand, and the ultra-high molecular weight polyethylene is purchased from Dongguan macro-polymer materials Limited company;
the plant fiber is modified plant fiber, the modified plant fiber is maleic anhydride grafted plant fiber, wherein the plant fiber is sisal fiber and cotton straw fiber, and the weight ratio of the plant fiber to the cotton straw fiber is 1:3.5;
the preparation method of the maleic anhydride grafted plant fiber comprises the following steps:
cutting 30 parts of plant fibers, adding the cut plant fibers into 100 parts of maleic anhydride solution, reacting at 75 ℃, dropwise adding 2.5 parts of hydrogen peroxide into a reaction container, continuously reacting for 2 hours, pouring out precipitate, washing with water, and drying for later use.
The compatilizer is maleic anhydride grafted polypropylene with the mark of 900P and is purchased from Jie New Material Co., ltd.
The auxiliary agent is a lubricant, and the lubricant is C wax.
The preparation method of the environment-friendly polyethylene fiber with high uniformity comprises the following steps:
1) Modifying plant fibers;
2) Mixing ultra-high molecular weight polyethylene, plant fiber, compatilizer and auxiliary agent, then adding the mixture into cosolvent at 115 ℃, and swelling for 2 hours under the condition of 6MPa to complete pre-swelling treatment;
adding the pre-swelled solution into a solvent to obtain a swelling solution; carrying out heat dissolution treatment on the ultra-high molecular weight polyethylene swelling solution to obtain a spinning solution;
3) Spinning the obtained spinning solution to obtain the polyethylene fiber.
The cosolvent is cis-decalin, and the addition amount of the cis-decalin is 15 times of the total weight of the ultra-high molecular weight polyethylene and the plant fiber.
The addition amount of the solvent is 25 times of the total weight of the ultra-high molecular weight polyethylene and the plant fiber, and the solvent comprises white oil and kerosene, and the weight ratio is 2:1.
example 3
The environment-friendly polyethylene fiber with high uniformity is prepared from the following raw materials in parts by weight: 60 parts of ultra-high molecular weight polyethylene, 15 parts of plant fiber, 1 part of compatilizer and 0.5 part of auxiliary agent.
The viscosity average molecular weight of the ultra-high molecular weight polyethylene is 450 ten thousand, and the ultra-high molecular weight polyethylene is purchased from Dongguan macro-polymer materials Limited company;
the plant fiber is modified plant fiber, the modified plant fiber is maleic anhydride grafted plant fiber, wherein the plant fiber is sisal fiber and cotton straw fiber, and the weight ratio of the plant fiber to the cotton straw fiber is 1:3.5;
the preparation method of the maleic anhydride grafted plant fiber comprises the following steps:
cutting 30 parts of plant fibers, adding the cut plant fibers into 100 parts of maleic anhydride solution, reacting at 75 ℃, dropwise adding 2.5 parts of hydrogen peroxide into a reaction container, continuously reacting for 2 hours, pouring out precipitate, washing with water, and drying for later use.
The compatilizer is maleic anhydride grafted polypropylene with the mark of 900P and is purchased from Jie New Material Co., ltd.
The auxiliary agent is a lubricant, and the lubricant is C wax.
The preparation method of the environment-friendly polyethylene fiber with high uniformity comprises the following steps:
1) Modifying plant fibers;
2) Mixing ultra-high molecular weight polyethylene, plant fiber, compatilizer and auxiliary agent, then adding the mixture into cosolvent at 115 ℃, and swelling for 2 hours under the condition of 6MPa to complete pre-swelling treatment;
adding the pre-swelled solution into a solvent to obtain a swelling solution; carrying out heat dissolution treatment on the ultra-high molecular weight polyethylene swelling solution to obtain a spinning solution;
3) Spinning the obtained spinning solution to obtain the polyethylene fiber.
The cosolvent is cis-decalin, and the addition amount of the cis-decalin is 15 times of the total weight of the ultra-high molecular weight polyethylene and the plant fiber.
The addition amount of the solvent is 25 times of the total weight of the ultra-high molecular weight polyethylene and the plant fiber, and the solvent comprises white oil and kerosene, and the weight ratio is 2:1.
example 4
The environment-friendly polyethylene fiber with high uniformity is prepared from the following raw materials in parts by weight: 60 parts of ultra-high molecular weight polyethylene, 15 parts of plant fiber, 1 part of compatilizer and 0.5 part of auxiliary agent.
The viscosity average molecular weight of the ultra-high molecular weight polyethylene is 250 ten thousand, 350 ten thousand and 450 ten thousand, and the weight ratio is 6:1:0.9, purchased from Dongguan city essence macro polymer material Co., ltd;
the plant fiber is modified plant fiber, the modified plant fiber is maleic anhydride grafted plant fiber, and the plant fiber is cotton straw fiber;
the preparation method of the maleic anhydride grafted plant fiber comprises the following steps:
cutting 30 parts of plant fibers, adding the cut plant fibers into 100 parts of maleic anhydride solution, reacting at 75 ℃, dropwise adding 2.5 parts of hydrogen peroxide into a reaction container, continuously reacting for 2 hours, pouring out precipitate, washing with water, and drying for later use.
The compatilizer is maleic anhydride grafted polypropylene with the mark of 900P and is purchased from Jie New Material Co., ltd.
The auxiliary agent is a lubricant, and the lubricant is C wax.
The preparation method of the environment-friendly polyethylene fiber with high uniformity comprises the following steps:
1) Modifying plant fibers;
2) Mixing ultra-high molecular weight polyethylene, plant fiber, compatilizer and auxiliary agent, then adding the mixture into cosolvent at 115 ℃, and swelling for 2 hours under the condition of 6MPa to complete pre-swelling treatment;
adding the pre-swelled solution into a solvent to obtain a swelling solution; carrying out heat dissolution treatment on the ultra-high molecular weight polyethylene swelling solution to obtain a spinning solution;
3) Spinning the obtained spinning solution to obtain the polyethylene fiber.
The cosolvent is cis-decalin, and the addition amount of the cis-decalin is 15 times of the total weight of the ultra-high molecular weight polyethylene and the plant fiber.
The addition amount of the solvent is 25 times of the total weight of the ultra-high molecular weight polyethylene and the plant fiber, and the solvent comprises white oil and kerosene, and the weight ratio is 2:1.
example 5
The environment-friendly polyethylene fiber with high uniformity is prepared from the following raw materials in parts by weight: 60 parts of ultra-high molecular weight polyethylene, 15 parts of plant fiber, 1 part of compatilizer and 0.5 part of auxiliary agent.
The viscosity average molecular weight of the ultra-high molecular weight polyethylene is 250 ten thousand, 350 ten thousand and 450 ten thousand, and the weight ratio is 6:1:0.9, purchased from Dongguan city essence macro polymer material Co., ltd;
the plant fiber is modified plant fiber, the modified plant fiber is maleic anhydride grafted plant fiber, wherein the plant fiber is sisal fiber and cotton straw fiber, and the weight ratio of the plant fiber to the cotton straw fiber is 1:1, a step of;
the preparation method of the maleic anhydride grafted plant fiber comprises the following steps:
cutting 30 parts of plant fibers, adding the cut plant fibers into 100 parts of maleic anhydride solution, reacting at 75 ℃, dropwise adding 2.5 parts of hydrogen peroxide into a reaction container, continuously reacting for 2 hours, pouring out precipitate, washing with water, and drying for later use.
The compatilizer is maleic anhydride grafted polypropylene with the mark of 900P and is purchased from Jie New Material Co., ltd.
The auxiliary agent is a lubricant, and the lubricant is C wax.
The preparation method of the environment-friendly polyethylene fiber with high uniformity comprises the following steps:
1) Modifying plant fibers;
2) Mixing ultra-high molecular weight polyethylene, plant fiber, compatilizer and auxiliary agent, then adding the mixture into cosolvent at 115 ℃, and swelling for 2 hours under the condition of 6MPa to complete pre-swelling treatment;
adding the pre-swelled solution into a solvent to obtain a swelling solution; carrying out heat dissolution treatment on the ultra-high molecular weight polyethylene swelling solution to obtain a spinning solution;
3) Spinning the obtained spinning solution to obtain the polyethylene fiber.
The cosolvent is cis-decalin, and the addition amount of the cis-decalin is 15 times of the total weight of the ultra-high molecular weight polyethylene and the plant fiber.
The addition amount of the solvent is 25 times of the total weight of the ultra-high molecular weight polyethylene and the plant fiber, and the solvent comprises white oil and kerosene, and the weight ratio is 2:1.
performance test:
1. tensile properties: the test method refers to GB/T1040 and the test results are recorded in the following table.
2. Biodegradability: test method referring to GB/T19277, composting is carried out fully under the conditions of temperature (58+ -2C) and humidity (50-55%), and CO after 45 days of material degradation is measured 2 The biodegradation rate of the material is expressed as the ratio of the actual CO2 release to its theoretical maximum release.
Experiment | Tensile Properties/MPa | Biodegradation rate/% |
Example 1 | 875 | 18 |
Example 2 | 760 | 16 |
Example 3 | 782 | 15 |
Example 4 | 745 | 17 |
Example 5 | 836 | 12 |
Claims (8)
1. The environment-friendly polyethylene fiber with high uniformity is characterized in that the preparation raw materials comprise ultra-high molecular weight polyethylene, plant fiber, compatilizer and auxiliary agent;
the plant fiber is selected from sisal fiber and cotton straw fiber, and the weight ratio of the sisal fiber to the cotton straw fiber is 1: (2-10); the plant fiber is modified plant fiber, and the modified plant fiber is selected from maleic anhydride grafted plant fiber.
2. The high uniformity environmental protection polyethylene fiber according to claim 1, wherein said auxiliary agent comprises at least one of lubricant, antioxidant, ultraviolet absorber, plasticizer, and stabilizer.
3. The high uniformity environmental protection polyethylene fiber according to claim 1, wherein said ultra high molecular weight polyethylene has a viscosity average molecular weight of 200-500 ten thousand.
4. The high uniformity, environmentally friendly polyethylene fiber according to claim 3, wherein said ultra high molecular weight polyethylene has a viscosity average molecular weight of 250 ten thousand, 350 ten thousand and 450 ten thousand.
5. The high uniformity environment-friendly polyethylene fiber according to claim 4, wherein the weight ratio of the ultra-high molecular weight polyethylene with the viscosity average molecular weight of 250 ten thousand, 350 ten thousand and 450 ten thousand is (5-8): 1: (0.5-2).
6. A method for preparing the high-uniformity environment-friendly polyethylene fiber according to any one of claims 1 to 5, comprising the following steps:
1) Modifying plant fibers;
2) Adding ultra-high molecular weight polyethylene, plant fibers, a compatilizer and an auxiliary agent into a cosolvent to perform pre-swelling treatment, and adding the pre-swelling treatment into the solvent to obtain a swelling solution; carrying out thermal dissolution treatment on the swelling solution to obtain spinning solution;
3) Spinning the obtained spinning solution to obtain the polyethylene fiber.
7. The method for producing highly uniform and environmentally friendly polyethylene fiber according to claim 6, wherein the solvent in step 2) is selected from alkanes and/or cycloalkanes.
8. The method for preparing the high-uniformity environment-friendly polyethylene fiber according to claim 7, wherein the solvent comprises at least one of white oil, kerosene and solvent oil.
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CN107476051A (en) * | 2017-08-24 | 2017-12-15 | 广西师范学院 | The method that sisal fiber polyethylene fiber composites prepare setline |
CN109306061A (en) * | 2018-06-06 | 2019-02-05 | 深圳大学 | The preparation method and ultra high molecular weight polyethylene fiber of ultra-high molecular weight polyethylene spinning solution |
CN109825891A (en) * | 2019-03-11 | 2019-05-31 | 星宇安防科技股份有限公司 | A kind of preparation method and fiber of ultra high molecular weight polyethylene fiber |
CN110886027A (en) * | 2019-11-26 | 2020-03-17 | 湖南中泰特种装备有限责任公司 | Preparation method of high-strength bamboo carbon polyethylene fiber |
CN112376126A (en) * | 2020-12-09 | 2021-02-19 | 句容市阳光恒瑞材料科技有限公司 | Preparation method of ultrahigh molecular weight polyethylene modified fiber |
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CN107326462B (en) * | 2017-06-20 | 2018-05-11 | 浙江金昊特种纤维有限公司 | A kind of preparation method of wear-resisting anti-cutting superhigh molecular weight polyethylene fibers |
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CN107476051A (en) * | 2017-08-24 | 2017-12-15 | 广西师范学院 | The method that sisal fiber polyethylene fiber composites prepare setline |
CN109306061A (en) * | 2018-06-06 | 2019-02-05 | 深圳大学 | The preparation method and ultra high molecular weight polyethylene fiber of ultra-high molecular weight polyethylene spinning solution |
CN109825891A (en) * | 2019-03-11 | 2019-05-31 | 星宇安防科技股份有限公司 | A kind of preparation method and fiber of ultra high molecular weight polyethylene fiber |
CN110886027A (en) * | 2019-11-26 | 2020-03-17 | 湖南中泰特种装备有限责任公司 | Preparation method of high-strength bamboo carbon polyethylene fiber |
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