CN109825895B - High-temperature-resistant alkali-resistant spandex and preparation method thereof - Google Patents
High-temperature-resistant alkali-resistant spandex and preparation method thereof Download PDFInfo
- Publication number
- CN109825895B CN109825895B CN201910162619.5A CN201910162619A CN109825895B CN 109825895 B CN109825895 B CN 109825895B CN 201910162619 A CN201910162619 A CN 201910162619A CN 109825895 B CN109825895 B CN 109825895B
- Authority
- CN
- China
- Prior art keywords
- resistant
- spandex
- temperature
- alkali
- silane coupling
- 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.)
- Active
Links
Landscapes
- Artificial Filaments (AREA)
Abstract
The invention discloses high-temperature-resistant alkali-resistant spandex and a preparation method thereof, wherein the high-temperature-resistant alkali-resistant spandex is prepared from polyether diol, 4-diphenylmethane diisocyanate, a chain extender and a silane coupling agent containing an epoxy group, wherein the silane coupling agent accounts for 0.01-5% of the mass percent of spandex filaments in the high-temperature-resistant alkali-resistant spandex. The polyether diol is polytetrahydrofuran diol, polypropylene glycol or a mixture of the polytetrahydrofuran diol and the polypropylene glycol. According to the invention, the silane coupling agent containing the epoxy group is adopted, so that on one hand, the hydrolysis reaction can be effectively prevented under the conditions of high temperature and alkaline environment in the back pass, on the other hand, the dispersibility of the sizing agent can be effectively improved, and the uniformity of the spandex yarn is improved.
Description
Technical Field
The invention relates to high-temperature-resistant alkali-resistant spandex and a preparation method thereof, belonging to the technical field of polyurethane fibers and weaving thereof.
Background
The spandex, namely the polyurethane elastic fiber, has the characteristics of high elongation, high elastic recovery rate, good fatigue resistance, low density, corrosion resistance, sun resistance, light resistance, ageing resistance and the like. The spandex has good affinity to different dyes and good dyeing performance. No matter disperse, acid and composite dyes or metallic dyes are adopted, spandex can be dyed uniformly. Along with the expansion of spandex application fields, people put forward higher requirements on spandex performance, and put forward different requirements such as chlorine resistance, high temperature resistance, oxidation resistance and the like on spandex according to different purposes besides the requirement on elasticity, wherein the requirement on high temperature resistance is particularly outstanding. For example, the more stringent the requirements of the fabric on color and luster, the more common the secondary and tertiary high-temperature dyeing, thereby providing a challenge to the high-temperature resistance of spandex. In recent years, spandex is increasingly used together with terylene, but terylene generally requires high-temperature dyeing at 125-130 ℃. Because the hard section of the spandex is easy to damage during high-temperature dyeing during certain drafting, the urethane and urea structures in the molecular chain are easy to oxidize and degrade, and the spandex is easy to damage at high dyeing temperature to reduce elasticity or cause yarn breakage. In addition, when the spandex is blended and dyed with other fibers, particularly with polyester, the spandex is easily affected by alkaline treatment and the like, so that the blended fabric is difficult to meet diversified post-treatment requirements, the application of the spandex is limited, and the spandex becomes one of the technical bottlenecks to be broken through in spandex development.
At present, the technical reports about the development of high-temperature resistant and alkali resistant spandex are more, but the technology has many defects. As reported in japanese patent H4-100919, the high temperature resistance of spandex fiber is improved by adding triamine after polymerization before spinning, and this modified spinning has 2 obvious drawbacks: 1. the triamine is added into the high-viscosity spinning stock solution, so that the dispersion uniformity of the stock solution cannot be ensured; 2. the alkali resistance is greatly influenced by adding the triamine, and the hydrolysis stability is greatly influenced. Chinese patent CN102127827A reports that the high temperature resistance of spandex is improved by using a method of modifying a polyurethane urea stock solution in situ by using nano attapulgite, and although the method improves the high temperature resistance to a certain extent, the spinnability is influenced by the defects that the special shape of the attapulgite, nano particles are easy to agglomerate and the like, and the large-scale production and use are not reported at present. U.S. Pat. No. 09/763418 discloses adding polyvinylidene fluoride (PVDF) solution to polyurethane urea spinning solution to improve the chemical resistance of spandex, but this method requires a higher PVDF content to achieve the desired effect and has a greater impact on the elastic properties of spandex itself. Therefore, the development of the high-temperature resistant and alkali resistant spandex with excellent spinnability and high performance is very necessary and has great practical significance.
Disclosure of Invention
The technical problem is as follows: the invention aims to solve the defects of the prior art, reduce the cost of the prior art and improve the performance of the prior art, and provides a high-temperature-resistant alkali-resistant spandex fiber with good spinnability and a preparation method thereof.
The technical scheme is as follows: the high-temperature-resistant alkali-resistant spandex is prepared from polyether diol, 4-diphenylmethane diisocyanate, a chain extender and a silane coupling agent containing an epoxy group, wherein the silane coupling agent accounts for 0.01-5% of the spandex filament in the high-temperature-resistant alkali-resistant spandex by mass percent.
Wherein:
the polyether diol is polytetrahydrofuran diol, polypropylene glycol or a mixture of the polytetrahydrofuran diol and the polypropylene glycol.
The chemical structural formula of the silane coupling agent containing the epoxy group is as follows:
wherein R is1、R2、R3Each independently represents:
(1) saturated aliphatic hydrocarbon group containing C1-C5;
(2) saturated alkoxy containing C1-C3;
in the formula I
Has the conventional meaning in the art and refers to an alkane chain containing a heteroatom or other functional group structure.
The molar ratio of diisocyanate groups in the 4, 4-diphenylmethane diisocyanate to the total number of hydroxyl groups contained in the polyether glycol is 1.65-2.50: 1.
The chain extender is one or more of 1, 2-Ethylenediamine (EDA), 1, 2-Propylenediamine (PDA), diethylenetriamine, 1-methyl-1, 5-pentylenediamine or hexamethylenediamine or p-phenylenediamine.
The preparation method of the high-temperature resistant and alkali resistant spandex comprises the following steps:
step 1: adding polyether glycol PTMG and 4, 4-diphenylmethane diisocyanate MDI into a reactor at the temperature of 45-85 ℃ under the protection of nitrogen, and reacting for 1-3 hours to obtain prepolymer PP capped by-NCO;
step 2: under the conditions of 10-40 ℃ and nitrogen protection, dissolving the prepolymer PP obtained in the step (1) into 35-45% of prepolymer solution PPs by using N, N-Dimethylacetamide (DMAC);
and step 3: on the basis of the step 2, carrying out chain extension reaction by using a mixed amine solution containing a chain extender and an end capping agent to form a polyurethane urea solution with the solid content of 30-40%;
and 4, step 4: adding a silane coupling agent containing an epoxy group into the polyurethane urea solution prepared in the step 3, and curing to obtain a spinning solution;
and 5: and (4) preparing the spinning stock solution obtained in the step (4) into high-temperature-resistant alkali-resistant spandex through dry spinning.
Has the advantages that: in the production process of spandex, the silane coupling agent containing epoxy functional groups is added in a slurry adding mode. Compared with other preparation methods, the method has the following advantages: (1) the silane coupling agent can obviously improve the high-temperature resistance of spandex; (2) the preparation process is simple, and the modification requirement can be realized without changing the original production process equipment; (3) the added silane coupling agent can improve the dispersibility of the sizing agent, and further improve the uniformity of spandex. Due to the advantages, the preparation of high-performance high-temperature-resistant alkali-resistant spandex can be realized.
Detailed Description
The invention discloses a high temperature resistant alkali resistant spandex which comprises: the polyurethane fiber is characterized by being prepared by combining polyether diol, 4-diphenylmethane diisocyanate, a chain extender and a silane coupling agent containing an epoxy group, wherein the silane coupling agent accounts for 0.01-5 percent of the spandex fiber in percentage by mass in the high-temperature-resistant alkali-resistant spandexThe silane coupling agent and spandex functional sizing agent are added into RA together2In the stock solution. The spandex fiber prepared by the method has excellent high-temperature and alkali resistance. The method specifically comprises the following steps:
step 1: adding polyether glycol and 4, 4-diphenylmethane diisocyanate (MDI) into a reactor at the temperature of 45-85 ℃ under the protection of nitrogen, and reacting for 1-3 hours to obtain a prepolymer (PP) terminated by-NCO;
the chemical reaction equation in the step 1 is as follows:
wherein
The polyether glycol has a chemical formula of polyether glycol, b is the sum of mole fractions of the polyether glycol, a represents the mole fraction of 4, 4-diphenylmethane diisocyanate, and preferably a: b is 1.65-2.50: 1;
the prepolymerization temperature is 45-85 ℃, and preferably 65-75 ℃;
the reaction time is 1-3 hours, preferably 1-2 hours.
Step 2: under the condition of 10-40 ℃ and nitrogen protection, dissolving the prepolymer (PP) obtained in the step (1) into 35-45% of Prepolymer Solution (PPs) by using N, N-Dimethylacetamide (DMAC);
the chain extension reaction temperature is 10-40 ℃, and preferably 15-25 ℃;
the concentration of the prepolymer solution is dissolved to be 35-45%, and preferably 40-45%.
And step 3: on the basis of the step 2, carrying out chain extension reaction by using a mixed amine solution (comprising a chain extender and a terminating agent) to form a polyurethane urea solution with the solid content of 30-40%;
the concentration of the polyurethane urea solution is 30-40%, preferably 35-40%.
And 4, step 4: and (3) fully mixing and uniformly dispersing the silane coupling agent and other functional additives, adding the mixture into the polyurethane urea solution prepared in the step (3), and curing to obtain a spinning stock solution with a certain viscosity.
And 5: and (4) preparing the high-temperature resistant alkali-resistant spandex from the spinning stock solution obtained in the step (4) through dry spinning.
The polyether diol is polytetrahydrofuran diol, polypropylene glycol or a mixture of the polytetrahydrofuran diol and the polypropylene glycol, and is preferably polyether diol;
the chain expanding amine is one or more of 1, 2-Ethylenediamine (EDA), 1, 2-Propylenediamine (PDA), diethylenetriamine, 1-methyl-1, 5-pentylenediamine or hexamethylenediamine or p-phenylenediamine.
The silane coupling agent contains an epoxy functional group with a special structure, and the chemical structural formula of the silane coupling agent is as follows.
Wherein R is1、R2、R3Each independently represents:
(1) saturated aliphatic hydrocarbon group containing C1-C5;
(2) saturated alkoxy containing C1-C3;
wherein in formula I
Have the conventional meaning in the art, and in certain embodiments
Represents an alkane chain containing a heteroatom or other functional group structure.
The R is1、R2、R3Independently preferably methoxy, ethoxy, methyl, ethyl, propyl, isopropyl;
the silane coupling agent accounts for 0.01-5% of the mass percent of the spandex filament, and preferably 0.1-3%.
Based on the special functional group silane coupling agent, the invention utilizes the silane coupling agent to have good compatibility with polyurethane and functional additives thereof, and also contains a ring structure, the ring structure can perform chemical reaction with degradation products of spandex filaments under acidic condition or alkaline condition in time, so as to play a role of sewing up in time, and can timely prevent degradation aging reaction of the spandex filaments under acidic condition or alkaline condition, thereby not only improving the dispersibility of the spandex additives in polyurethane resin, but also solving the problems of poor high temperature resistance and poor alkali resistance of the spandex, and simultaneously effectively improving the self strength of the spandex.
Example 1
Step 1: under the protection of nitrogen, 8.092kg of polytetramethylene ether glycol (with the molecular weight of 1810) and 1.86kg of 4, 4-diphenylmethane diisocyanate are simultaneously added into a reactor, the reaction temperature is 65 ℃, and the reaction time is 2 hours, so that a prepolymer (PP) terminated by-NCO with a certain mass fraction is obtained;
step 2: adding 14.93kg of DMAC into the prepolymer (PP) prepared in the step 1 under the conditions of 20 ℃ and nitrogen protection, and stirring for 1 hour at the stirring speed of 100 revolutions per minute to obtain a uniform Prepolymer Solution (PPs);
and step 3: on the basis of the step 2, stirring at the speed of 170 rpm, adding 3.92kg of mixed amine DMAC solution (comprising 0.010kg of propane diamine, 0.159kg of ethane diamine and 0.026g of diethylamine) into the uniform Prepolymer Solution (PPs) in a slow dropwise manner, and carrying out chain extension reaction to obtain RA2 stock solution;
and 4, step 4: and (3) adding 100g of 245 antioxidant (245), 22g of magnesium stearate (MG), 20g of delustrant (TDO) and 10g of silane coupling agent (KH-560) into the RA2 stock solution obtained in the step (3), uniformly stirring and mixing, and curing to obtain the spinning stock solution.
And 5: and (3) preparing the spinning stock solution into high-temperature-resistant alkali-resistant spandex by dry spinning.
Example 2
Step 1: under the protection of nitrogen, 8.092kg of polytetramethylene ether glycol (with the molecular weight of 1810) and 1.86kg of 4, 4-diphenylmethane diisocyanate are simultaneously added into a reactor, the reaction temperature is 65 ℃, and the reaction time is 2 hours, so that a prepolymer (PP) terminated by-NCO with a certain mass fraction is obtained;
step 2: adding 14.93kg of DMAC into the prepolymer (PP) prepared in the step 1 under the conditions of 20 ℃ and nitrogen protection, and stirring for 1 hour at the stirring speed of 100 revolutions per minute to obtain a uniform Prepolymer Solution (PPs);
and step 3: on the basis of the step 2, stirring at the speed of 170 rpm, adding 3.92kg of mixed amine DMAC solution (comprising 0.010kg of propane diamine, 0.159kg of ethane diamine and 0.026g of diethylamine) into the uniform Prepolymer Solution (PPs) in a slow dropwise manner, and carrying out chain extension reaction to obtain RA2 stock solution;
and 4, step 4: and (3) adding 100g of 245 antioxidant (245), 22g of magnesium stearate (MG), 20g of delustering agent (TDO) and 30g of silane coupling agent (KH-560) into the RA2 stock solution obtained in the step (3), uniformly stirring and mixing, and curing to obtain the spinning stock solution.
And 5: and (3) preparing the spinning stock solution into high-temperature-resistant alkali-resistant spandex by dry spinning.
Example 3
Step 1: under the protection of nitrogen, 8.092kg of polytetramethylene ether glycol (with the molecular weight of 1810) and 1.86kg of 4, 4-diphenylmethane diisocyanate are simultaneously added into a reactor, the reaction temperature is 65 ℃, and the reaction time is 2 hours, so that a prepolymer (PP) terminated by-NCO with a certain mass fraction is obtained;
step 2: adding 14.93kg of DMAC into the prepolymer (PP) prepared in the step 1 under the conditions of 20 ℃ and nitrogen protection, and stirring for 1 hour at the stirring speed of 100 revolutions per minute to obtain a uniform Prepolymer Solution (PPs);
and step 3: on the basis of the step 2, stirring at the speed of 170 rpm, adding 3.92kg of mixed amine DMAC solution (comprising 0.010kg of propane diamine, 0.159kg of ethane diamine and 0.026g of diethylamine) into the uniform Prepolymer Solution (PPs) in a slow dropwise manner, and carrying out chain extension reaction to obtain RA2 stock solution;
and 4, step 4: and (3) adding 100g of 245 antioxidant (245), 22g of magnesium stearate (MG), 20g of delustering agent (TDO) and 50g of silane coupling agent (KH-560) into the RA2 stock solution obtained in the step (3), uniformly stirring and mixing, and curing to obtain the spinning stock solution.
And 5: and (3) preparing the spinning stock solution into high-temperature-resistant alkali-resistant spandex by dry spinning.
Example 4
Step 1: under the protection of nitrogen, 8.092kg of polytetramethylene ether glycol (with the molecular weight of 1810) and 1.86kg of 4, 4-diphenylmethane diisocyanate are simultaneously added into a reactor, the reaction temperature is 65 ℃, and the reaction time is 2 hours, so that a prepolymer (PP) terminated by-NCO with a certain mass fraction is obtained;
step 2: adding 14.93kg of DMAC into the prepolymer (PP) prepared in the step 1 under the conditions of 20 ℃ and nitrogen protection, and stirring for 1 hour at the stirring speed of 100 revolutions per minute to obtain a uniform Prepolymer Solution (PPs);
and step 3: on the basis of the step 2, stirring at the speed of 170 rpm, adding 3.92kg of mixed amine DMAC solution (comprising 0.010kg of propane diamine, 0.159kg of ethane diamine and 0.026g of diethylamine) into the uniform Prepolymer Solution (PPs) in a slow dropwise manner, and carrying out chain extension reaction to obtain RA2 stock solution;
and 4, step 4: and (3) adding 100g of 245 antioxidant (245), 22g of magnesium stearate (MG), 20g of delustering agent (TDO) and 100g of silane coupling agent (KH-560) into the RA2 stock solution obtained in the step (3), uniformly stirring and mixing, and curing to obtain the spinning stock solution.
And 5: and (3) preparing the spinning stock solution into high-temperature-resistant alkali-resistant spandex by dry spinning.
Example 5
Step 1: under the protection of nitrogen, 8.092kg of polytetramethylene ether glycol (with the molecular weight of 1810) and 1.86kg of 4, 4-diphenylmethane diisocyanate are simultaneously added into a reactor, the reaction temperature is 65 ℃, and the reaction time is 2 hours, so that a prepolymer (PP) terminated by-NCO with a certain mass fraction is obtained;
step 2: adding 14.93kg of DMAC into the prepolymer (PP) prepared in the step 1 under the conditions of 20 ℃ and nitrogen protection, and stirring for 1 hour at the stirring speed of 100 revolutions per minute to obtain a uniform Prepolymer Solution (PPs);
and step 3: on the basis of the step 2, stirring at the speed of 170 rpm, adding 3.92kg of mixed amine DMAC solution (comprising 0.010kg of propane diamine, 0.159kg of ethane diamine and 0.026g of diethylamine) into the uniform Prepolymer Solution (PPs) in a slow dropwise manner, and carrying out chain extension reaction to obtain RA2 stock solution;
and 4, step 4: and (3) adding 100g of 245 antioxidant (245), 22g of magnesium stearate (MG), 20g of delustering agent (TDO) and 300g of silane coupling agent (KH-560) into the RA2 stock solution obtained in the step (3), uniformly stirring and mixing, and curing to obtain the spinning stock solution.
And 5: and (3) preparing the spinning stock solution into high-temperature-resistant alkali-resistant spandex by dry spinning.
Comparative example
Step 1: under the protection of nitrogen, 8.092kg of polytetramethylene ether glycol (with the molecular weight of 1810) and 1.86kg of 4, 4-diphenylmethane diisocyanate are simultaneously added into a reactor, the reaction temperature is 65 ℃, and the reaction time is 2 hours, so that a prepolymer (PP) terminated by-NCO with a certain mass fraction is obtained;
step 2: adding 14.93kg of DMAC into the prepolymer (PP) prepared in the step 1 under the conditions of 20 ℃ and nitrogen protection, and stirring for 1 hour at the stirring speed of 100 revolutions per minute to obtain a uniform Prepolymer Solution (PPs);
and step 3: on the basis of the step 2, stirring at the speed of 170 rpm, adding 3.92kg of mixed amine DMAC solution (comprising 0.010kg of propane diamine, 0.159kg of ethane diamine and 0.026g of diethylamine) into the uniform Prepolymer Solution (PPs) in a slow dropwise manner, and carrying out chain extension reaction to obtain RA2 stock solution;
and 4, step 4: and (3) adding 100g of 245 antioxidant (245), 22g of magnesium stearate (MG) and 20g of flatting agent (TDO) into the RA2 stock solution obtained in the step (3), stirring and mixing uniformly, and curing to obtain a spinning stock solution.
And 5: and (3) preparing the spinning stock solution into high-temperature-resistant alkali-resistant spandex by dry spinning.
Table 1: comparison of the Performance between the inventive example and the comparative example
| Item | Control sample | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| KH 560/silk weight (%) | 0 | 0.1 | 0.3 | 0.5 | 1 | 3 |
| Breaking strength (MPa) | 53.6 | 54.1 | 54.6 | 56.2 | 56.1 | 55.8 |
| Elongation at Break (%) | 517 | 502 | 522 | 531 | 534 | 505 |
| Primary high temperature (%) | 56.6 | 60.2 | 63.1 | 70.3 | 75.3 | 86.7 |
| Secondary high temperature (%) | 47.1 | 52.1 | 55.3 | 66.4 | 71.2 | 80.2 |
| Alkali resistance (%) | 43.2 | 48.1 | 54.2 | 56.2 | 60.3 | 62.7 |
As can be seen from Table 1, the high temperature and alkali resistance of the spandex can be remarkably improved by using the silane coupling agent with the epoxy group, and the high temperature and hydrolysis resistance of the spandex fiber is also increased along with the increase of the content of the auxiliary agent, but the mechanical property of polyurethane is influenced by the excessively high content, and the spinnability of dry spinning in spandex production is influenced.
The invention has been described in terms of detailed embodiments and specific examples. It will be apparent to persons skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. The high-temperature-resistant and alkali-resistant spandex is characterized in that a silane coupling agent containing epoxy groups is added into a polyurethane urea solution formed by polyether diol, 4-diphenylmethane diisocyanate and a chain extender to prepare the high-temperature-resistant and alkali-resistant spandex, wherein the silane coupling agent containing epoxy groups accounts for 0.01-5% of the mass percent of spandex filaments in the high-temperature-resistant and alkali-resistant spandex;
the chemical structural formula of the silane coupling agent containing the epoxy group is as follows:
Wherein R is1、R2、R3Each independently represents:
(1) saturated aliphatic hydrocarbon group containing C1-C5;
(2) saturated alkoxy containing C1-C3;
in the formula I "
"represents an alkane chain containing a heteroatom or other functional group structure;
the chain extender is one or more of 1, 2-Ethylenediamine (EDA), 1, 2-Propylenediamine (PDA), diethylenetriamine, 2-methyl-1, 5-pentylenediamine or hexamethylenediamine or p-phenylenediamine.
2. The spandex with high temperature resistance and alkali resistance as claimed in claim 1, wherein the polyether diol is polytetrahydrofuran diol, polypropylene glycol or a mixture thereof.
3. The high temperature resistant and alkali resistant spandex of claim 1, wherein the molar ratio of diisocyanate groups in the 4, 4-diphenylmethane diisocyanate to the total number of hydroxyl groups in the polyether glycol is 1.65-2.50: 1.
4. A method for preparing high temperature and alkali resistant spandex according to claim 1, characterized in that the method comprises the following steps:
step 1: adding polyether glycol PTMG and 4, 4-diphenylmethane diisocyanate MDI into a reactor at the temperature of 45-85 ℃ under the protection of nitrogen, and reacting for 1-3 hours to obtain a prepolymer terminated by-NCO;
step 2: dissolving the prepolymer obtained in the step 1 into 35-45% of prepolymer solution by using N, N-Dimethylacetamide (DMAC) under the conditions of 10-40 ℃ and nitrogen protection;
and step 3: on the basis of the step 2, carrying out chain extension reaction by using a mixed amine solution containing a chain extender and an end capping agent to form a polyurethane urea solution with the solid content of 30-40%;
and 4, step 4: adding a silane coupling agent containing an epoxy group into the polyurethane urea solution prepared in the step 3, and curing to obtain a spinning solution;
and 5: and (4) preparing the spinning stock solution obtained in the step (4) into high-temperature-resistant alkali-resistant spandex through dry spinning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910162619.5A CN109825895B (en) | 2019-03-05 | 2019-03-05 | High-temperature-resistant alkali-resistant spandex and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910162619.5A CN109825895B (en) | 2019-03-05 | 2019-03-05 | High-temperature-resistant alkali-resistant spandex and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109825895A CN109825895A (en) | 2019-05-31 |
| CN109825895B true CN109825895B (en) | 2021-07-20 |
Family
ID=66865290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910162619.5A Active CN109825895B (en) | 2019-03-05 | 2019-03-05 | High-temperature-resistant alkali-resistant spandex and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109825895B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0397121A2 (en) * | 1989-05-12 | 1990-11-14 | Kuraray Co., Ltd. | Elastic polyurethane fiber |
| KR100775756B1 (en) * | 2006-12-20 | 2007-11-12 | 주식회사 효성 | Acid resistante polyurethane fiber |
| CN103498209A (en) * | 2013-10-21 | 2014-01-08 | 浙江华峰氨纶股份有限公司 | Manufacturing method of high-temperature-resistant and alkali-resistant polyurethane elastic fibers |
| CN104278354A (en) * | 2014-10-28 | 2015-01-14 | 浙江华峰氨纶股份有限公司 | Preparation method of flesh-colored spandex |
| CN105238033A (en) * | 2015-10-09 | 2016-01-13 | 滁州环球聚氨酯科技有限公司 | Wear-resistant acid/alkali-resistant polyurethane elastomer |
| CN105369388A (en) * | 2015-11-10 | 2016-03-02 | 浙江华峰氨纶股份有限公司 | Preparation method for high-alkali-resistance spandex |
| CN106757487A (en) * | 2016-12-16 | 2017-05-31 | 浙江华峰氨纶股份有限公司 | Flexible heating polyurethane fiber of one kind and preparation method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1291080C (en) * | 2004-12-08 | 2006-12-20 | 江苏南黄海实业股份有限公司 | Method for preparing thermostable meltspun urethane elastic fiber |
| CN103643345A (en) * | 2013-12-18 | 2014-03-19 | 浙江华峰氨纶股份有限公司 | Preparation method of urethane elastic fiber with function of resisting electromagnetic radiation |
| CN103710786B (en) * | 2013-12-18 | 2015-08-12 | 浙江华峰氨纶股份有限公司 | A kind of preparation method of the polyurethane stock solution for high speed spinning |
-
2019
- 2019-03-05 CN CN201910162619.5A patent/CN109825895B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0397121A2 (en) * | 1989-05-12 | 1990-11-14 | Kuraray Co., Ltd. | Elastic polyurethane fiber |
| KR100775756B1 (en) * | 2006-12-20 | 2007-11-12 | 주식회사 효성 | Acid resistante polyurethane fiber |
| CN103498209A (en) * | 2013-10-21 | 2014-01-08 | 浙江华峰氨纶股份有限公司 | Manufacturing method of high-temperature-resistant and alkali-resistant polyurethane elastic fibers |
| CN104278354A (en) * | 2014-10-28 | 2015-01-14 | 浙江华峰氨纶股份有限公司 | Preparation method of flesh-colored spandex |
| CN105238033A (en) * | 2015-10-09 | 2016-01-13 | 滁州环球聚氨酯科技有限公司 | Wear-resistant acid/alkali-resistant polyurethane elastomer |
| CN105369388A (en) * | 2015-11-10 | 2016-03-02 | 浙江华峰氨纶股份有限公司 | Preparation method for high-alkali-resistance spandex |
| CN106757487A (en) * | 2016-12-16 | 2017-05-31 | 浙江华峰氨纶股份有限公司 | Flexible heating polyurethane fiber of one kind and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| .γ-环氧丙氧基丙基三甲氧基硅烷改性聚氨酯乳液的制备与性能研究;刘芳等;《弹性体》;20051225;第15卷(第6期);第10-14页 * |
| .γ-环氧丙氧基丙基三甲氧基硅烷改性聚氨酯弹性体的合成、结构与性能;刘芳等;《合成橡胶工业》;20050115;第28卷(第1期);第26-30页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109825895A (en) | 2019-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101469463B (en) | Preparation of polyether type high resilience spandex fibre and product produced thereby | |
| CN103436983B (en) | High-resilience urethane elastic fiber as well as preparation method thereof | |
| CN101096779A (en) | Process for producing polyether type easy dyeing spandex fiber | |
| CN103710786B (en) | A kind of preparation method of the polyurethane stock solution for high speed spinning | |
| CN100543202C (en) | The preparation method of colorful spandex fiber | |
| CN112127006A (en) | Easy-to-dye spandex fiber and preparation method thereof | |
| CN101096778A (en) | Process for producing polyether type comfortable spandex fibre | |
| CN113005559B (en) | Preparation method of nano-modified spandex easy to unwind | |
| CN110923844B (en) | Preparation method of spandex easy to unwind | |
| CN109881291A (en) | A kind of acid dyes is easily painted the preparation method of spandex | |
| WO2009084815A1 (en) | Easily dyeable polyurethaneurea spandex yarn and method of preparing the same | |
| CN101736432B (en) | Production method of anti-yellowing polyurethane elastic fiber | |
| CN104153033A (en) | Preparation method of porous easy-dyeing spandex | |
| CN106283265A (en) | A kind of preparation method of the microcosmic finely dispersed zirconium phosphate fire-retardant spandex of synergistic | |
| CN105483856A (en) | Method for preparing ultraviolet aging resistant spandex through in situ polymerization | |
| CN109825895B (en) | High-temperature-resistant alkali-resistant spandex and preparation method thereof | |
| CN114540975A (en) | High-elongation low-modulus polyurethane elastic fiber and preparation method thereof | |
| CN107641847B (en) | Preparation method of polyurethane elastic fiber with excellent adhesive force and dyeing property | |
| CN103898631A (en) | Polyurethane urea rubber composite elastic fiber and preparation method thereof | |
| CN108048953B (en) | Polysulfone-polyurethane urea composite elastic fiber and preparation method thereof | |
| CN105506777A (en) | Polyurethane elastic fiber easy to adhere and preparation method thereof | |
| CN108048947B (en) | Polyimide blending modified spandex and preparation method thereof | |
| CN101736435A (en) | Method for producing soft polyurethane fiber | |
| CN112410930B (en) | Polyurethane elastic fiber with excellent dyeing property and preparation thereof | |
| KR20110079377A (en) | Producing method of polyurethanure elastic fiber having improved dying property |
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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No. 1788, Development Zone Avenue, Ruian Dongshan Economic Development Zone, Wenzhou City, Zhejiang Province, 325200 Applicant after: Huafeng Chemical Co.,Ltd. Address before: No. 1788, Development Zone Avenue, Ruian Dongshan Economic Development Zone, Wenzhou City, Zhejiang Province, 325200 Applicant before: ZHEJIANG HUAFENG SPANDEX Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |