CN113652015A - Sun-proof natural latex foam material and preparation method thereof - Google Patents
Sun-proof natural latex foam material and preparation method thereof Download PDFInfo
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- CN113652015A CN113652015A CN202110960488.2A CN202110960488A CN113652015A CN 113652015 A CN113652015 A CN 113652015A CN 202110960488 A CN202110960488 A CN 202110960488A CN 113652015 A CN113652015 A CN 113652015A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/30—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by mixing gases into liquid compositions or plastisols, e.g. frothing with air
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0014—Use of organic additives
- C08J9/0028—Use of organic additives containing nitrogen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2307/00—Characterised by the use of natural rubber
- C08J2307/02—Latex
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3472—Five-membered rings
- C08K5/3475—Five-membered rings condensed with carbocyclic rings
Abstract
The invention provides a light-fast natural latex foaming material which is characterized by comprising an ultraviolet absorbent, wherein the ultraviolet absorbent is one or more of modified benzotriazole compound series. The natural latex sponge can not generate yellowing phenomenon for a long time under the sunlight insolation, can break through the traditional concept that sponge household products can only be dried in the shade after being washed by water at the present stage, and is a product which has simple and easy preparation process, low requirement on equipment and easy realization of industrial production.
Description
Technical Field
The invention relates to the field of high polymer materials, in particular to a sun-proof natural latex foaming material and a preparation method thereof.
Background
Natural latex sponge products are an important class of latex products. The low-density porous rubber material is prepared by latex through a foaming process. The natural latex sponge material has a plurality of excellent properties such as small relative density, light weight, excellent buffering performance, quick recovery after deformation, excellent creep resistance and fatigue resistance, and the like, so that the natural latex sponge material can be applied to a plurality of fields such as home furnishing, traffic, buildings and the like, such as mattresses, pillows, breast pads, cushions, buffering materials, sound insulation materials and the like.
However, natural latex sponge materials also have their own drawbacks. Due to the porous nature, the contact area between the porous material and the air is increased, and the porous material is more easily attacked by adverse factors such as oxygen in the air, so that the appearance and performance of the porous material are damaged, and the use value of the porous material is affected or lost. In particular, natural latex sponges are susceptible to yellowing from sunlight exposure due to the nature of the latex product itself and the manufacturing process. Therefore, the latex sponge products are required to be preserved in the dark in the current instruction of the latex sponge products, particularly in natural latex household products (pillows, mattresses and the like). The use of the latex pillow and the mattress is greatly limited, and bacteria are easy to breed, which is not beneficial to the healthy life of people.
Disclosure of Invention
The ultraviolet damage resistance of the latex sponge material is improved, the sun-proof natural latex foaming material is developed, the requirements of people on the high-quality sponge material are met, the economic significance and the social significance are very important, and the latex foaming material can also play a certain role in promoting the development of the natural latex product industry.
Aiming at the technical problems in the prior art, the invention provides a sun-proof natural latex foaming material, so as to prolong the solarization and yellowing time of the natural latex foaming material and improve the sun-proof capability of the sponge material. The light-fast natural latex foaming material is characterized by comprising an ultraviolet absorbent, wherein the ultraviolet absorbent is one or more of modified benzotriazole compounds (KZW-1).
Preferably, the modified benzotriazole compound is prepared by mixing a benzotriazole compound, a dispersant and water according to a certain proportion, the molecular weight of the KZW-1 is 9600-23000, the structural formula of the benzotriazole compound (KZW-1) is as follows,
wherein R is1 R2 R3 R4 R5Each being an alkyl group of different carbon number.
The commonly used ultraviolet absorbent is a compound with low molecular weight, has strong mobility, is easy to migrate and volatilize during the production and use of the product, leads to the quick reduction of the sun-proof effect of the product, and has high molecular weight of KZW-1. The higher the molecular weight of KZW-1 is, the more stably KZW-1 can stay at the present position without reducing the effect of the product along with the migration of the product to the environment in the cleaning and using processes.
Preferably, the modification method of the modified benzotriazole compound is as follows:
adding 1-methyl-3-hexyl imidazole bromide ionic liquid and KZW-1 in a mass ratio of 1:10-1:1 into purified water, wherein the solid contents of the two are 40% -50%, adjusting the pH value to 8.1 by using ammonia water, heating the mixture to 70 ℃, and grinding for 60min at the rotation speed of a grinder of 5000 r/min.
The structural formula of the ionic liquid is as follows:
because the molecular weight of KZW-1 is high, the KZW-1 is difficult to stably disperse in water, and the ionic liquid is used for modifying the KZW-1. Firstly, the ionic liquid has good stability, and the physical modification is carried out on the KZW-1 by utilizing the pi-pi interaction of the ionic liquid and the KZW-1, so that the ultraviolet resistance effect of the KZW-1 is not damaged, and the KZW-1 can be stably dispersed in water.
Preferably, the lightfast natural latex foaming material further comprises natural latex, a stabilizer, a vulcanizing agent, a vulcanization accelerator, an activator, an anti-aging agent, a gelling agent and a foaming agent.
Preferably, the lightfast natural latex foam material comprises, by weight, 50-90 parts of natural latex, 1-2 parts of a stabilizer, 0.5-4.0 parts of an ultraviolet absorber, 1.0-2.0 parts of a vulcanizing agent, 0.5-1.0 part of a vulcanization accelerator, 2.0-5.0 parts of a vulcanization activator, 0.4-0.8 part of an anti-aging agent, 1.0-6.0 parts of a gelling agent, and 2.0-5.0 parts of a foaming agent.
Preferably, the natural latex has a solid content of 50-70% and an ammonia content of 0.1-0.3.
Preferably, the stabilizer is one or more of potassium pyrophosphate, potassium ricinoleate and potassium oleate.
Preferably, the vulcanizing agent is sulfur, which can effectively crosslink molecular chains in the latex and endow the product with excellent physical properties.
Preferably, the vulcanization accelerator is one or more of Zinc Diethyldithiocarbamate (ZDEC), 2-mercaptobenzothiazole (M) and Diphenylguanidine (DPG).
Preferably, the vulcanizing activator is selected from zinc oxide, which can effectively activate vulcanization and can also play a role of an ultraviolet shielding agent and auxiliary gelation due to the special properties of the vulcanizing activator.
Preferably, the antioxidant is selected from one or more of antioxidants 1010, 445 and 616. The phenol anti-aging agent can greatly reduce the migration of the auxiliary agent and improve the anti-aging effect.
Preferably, the gelling agent is ammonium sulfate or sodium fluosilicate.
Preferably, the foaming agent is a saponified product of oleic acid, castor oil and the like, or one or more of other soaps.
The invention also aims to provide a preparation method of the light-fast natural latex foaming material, which comprises the following steps:
firstly, a certain amount of natural latex is taken in a container, then a vulcanizing agent, a vulcanization accelerator, a foaming agent, a stabilizer, an anti-aging agent and an ultraviolet absorbent are added, and stirring and curing are carried out at a certain temperature;
foaming the mixture by a high-speed stirring method, and adding a vulcanization activator and a gelling agent dispersoid;
thirdly, the foaming liquid is immediately injected and molded when the stirring is continued to the gel point, and the sun-proof natural latex foaming material is prepared after shaping, vulcanization, water washing and drying.
The invention also aims to provide a preparation method of the light-fast natural latex foaming material, which comprises the following steps:
firstly, a certain amount of natural latex is taken in a container, then a vulcanizing agent, a vulcanization accelerator, a foaming agent, a stabilizer and an anti-aging agent are added, stirred and cured at a certain temperature;
foaming the mixture by a high-speed stirring method, and adding a vulcanization activator and a gelling agent dispersoid;
thirdly, when the mixture is continuously stirred to the gel point, the foaming liquid is immediately injected or paved, and a semi-finished natural latex foaming material is prepared through shaping, vulcanization and washing;
diluting the ultraviolet absorbent, soaking the semi-finished product material in the working solution, padding the semi-finished product material by using a roller, and drying the semi-finished product material to obtain the sun-proof natural latex foaming material.
Preferably, in the first step, the stirring temperature is 20-40 ℃, and the curing time is 5-24 hours.
Preferably, in the second step, a sample preparation device or a foaming machine may be used as the foaming means for compounding the latex. Preferably, a sample preparation device is adopted, the stirring speed needs to be controlled, the mixed latex is firstly subjected to preliminary foaming at a low rotating speed, then the foaming times are controlled to be about 6-10 times at a high rotating speed, and finally the rotating speed is reduced for foam homogenizing. Preferably, a foaming machine is adopted, and the foaming ratio is controlled to be about 8-14 times by controlling the air inflow according to an operation specification without foam homogenizing.
Preferably, in the step III, the vulcanization process is carried out in a steam box with the temperature of more than 100 ℃ for 20-30 min, the drying temperature is 100-140 ℃, and the drying time is 0.5-3 h.
The invention also aims to provide application of the lightfast natural latex foaming material, and the lightfast natural latex foaming material can be applied to the field of sponge products such as household articles, clothing products and the like.
The natural latex sponge can not generate yellowing phenomenon for a long time under the sunlight insolation, can break through the traditional concept that sponge household products can only be dried in the shade after being washed by water at the present stage, and is a product which has simple and easy preparation process, low requirement on equipment and easy realization of industrial production. In addition, the special ultraviolet-resistant modifier and the modification method are used, so that the sun-proof property of the sponge material can not be obviously reduced after being washed for many times, and the practicability of the material is improved.
Drawings
FIG. 1 is a graph showing the results of the lightfastness test for the sponge material prepared in comparative example 1.
FIG. 2 is a graph of the lightfastness test results for the sponge material prepared in example 1.
FIG. 3 is a graph showing the comparison of the results of the tests of the sponge materials prepared in comparative example 1 and example 1. The first row of samples was the sponge material prepared in comparative example 1, the second row of samples was the sponge material prepared in example 1, the leftmost samples in the two rows were all reference samples, and the right three samples were test samples.
Detailed Description
The invention will be further described with reference to specific examples:
example 1 and comparative example 1
A, make up
A lightfast natural latex foaming material comprises, by weight, 50 parts of natural latex, 2 parts of a stabilizer, 2 parts of an ultraviolet absorber, 1 part of a vulcanizing agent, 1 part of a vulcanization accelerator, 5 parts of a vulcanization activator, 0.5 part of an anti-aging agent, 5.0 parts of a gelling agent and 4.0 parts of a foaming agent.
Second, preparation method
Firstly, 50 parts by weight of concentrated natural latex with solid content of 61.5 percent is taken to be put in a reaction vessel, then a vulcanizing agent, a vulcanization accelerator, a foaming agent, a stabilizer, an anti-aging agent and an ultraviolet absorbent are added according to the parts by weight shown in the table 1, and a complex latex mixture is prepared by complex curing at the temperature of 30 ℃ for 8-24 hours;
foaming the latex mixture by a foaming machine, and adding a vulcanization activator and a gelling agent;
injecting the foamed latex into a pillow mold immediately after the foaming times are enough, putting the pillow mold into a steam box with the temperature of more than 100 ℃ for shaping and vulcanizing for 30min, taking out the pillow mold, washing with water, and drying at the temperature of 120 ℃ for 2h to obtain the sun-proof natural latex sponge pillow sample material.
Specifically, the vulcanizing agent is sulfur, the vulcanization accelerator is an accelerator ZDEC, the foaming agent is a product obtained by saponifying oleic acid, the ultraviolet absorbent is modified KZW-1, the anti-aging agent is anti-aging agent 1010, the stabilizer is potassium pyrophosphate, the vulcanization activator is zinc oxide, and the gelling agent is ammonium sulfate.
The modification method used for the modification of KZW-1 is as follows:
adding 1-methyl-3-hexyl imidazole bromide ionic liquid and KZW-1 in a mass ratio of 1:8 into purified water, wherein the solid contents of the two are 40% -50%, adjusting the pH value to 8.1 by using ammonia water, heating the mixture to 70 ℃, and grinding for 60min at the rotation speed of a grinder of 5000 r/min. Wherein R of KZW-11、R2、R3、R4、R5Respectively corresponding to alkyl groups with carbon numbers of 0, 2 and 0.
Third, test of lightfastness
The sun-proof effect of the prepared natural latex sponge pillow sample material is measured by adopting an ISO 4892-2:2013 plastic-laboratory illumination aging test (the second part is a xenon arc lamp), and the yellowing grade of the sample is evaluated by adopting a gray scale. The sample materials prepared for comparative example 1 and example 1 were each tested in duplicate 3 times and the results are reported in table 2.
TABLE 1
TABLE 2
Remarking:
1. referring to GB/T250-2008, the gray scale rating is determined under the standard illuminant D65, with the best 5-grade and the worst 1-grade.
2. Intermediate sample testing and evaluation of the results after the end of the test were performed within 1 hour after the specified exposure period described above.
3. Test specimens were cut from the samples.
FIG. 1 is a graph showing a sample material obtained in comparative example 1 after being aged in a xenon-arc accelerated aging oven, and FIG. 2 is a graph showing a sample material obtained in example 1 after being aged in a xenon-arc accelerated aging oven. As can be seen from the figure, the sponge material added with the ultraviolet absorbent prepared by the invention has better aging resistance effect than the xenon arc lamp added with the traditional absorbent. In view of the drawings which require no color to be provided, the following is expressly understood: the dark spots in the figure are actually yellow sunburn, and the larger the spot, the darker the spot, indicating the poorer the sun-fastness.
Because of the high energy of ultraviolet rays in sunlight, the natural latex foaming material can generate a photo-aging phenomenon under the action of light when being exposed to the sun, so that the appearance and the physical and mechanical properties of a product are reduced, and the service life of the product is shortened. Therefore, the dispersibility and migration resistance of the ultraviolet ray treatment agent in the latex are important. According to the invention, the energy of ultraviolet rays in sunlight is converted into other energy which has small influence on the sponge material through ways of shielding, absorption and the like by adding the high-molecular-weight ultraviolet treating agent and a special integration process method, so that the natural latex foaming material is protected, and the sun-proof property of the natural latex foaming material is improved. The ionic liquid and KZW-1 non-covalent bond pi-pi bond interaction modification improves the dispersibility of KZW-1 in natural latex and further improves the uvioresistant performance of the natural latex. Meanwhile, because the KZW-1 has larger molecular weight and high migration resistance, the KZW-1 can be stably dispersed in the product in the washing, storage and use processes of the natural latex foaming product, and can not migrate and volatilize along with time, so that the sun-proof performance of the product is further improved.
The sun-proof natural latex foam material can be applied to natural latex sponge products such as pillows, mattresses, breast cushions and the like.
When the pillow is manufactured, the latex after foaming is injected into a pillow mould.
When the mattress is manufactured, the foamed latex is injected into a mattress mould or is flatly laid by a production line for gelation.
When the breast pad is manufactured, the latex after foaming is injected into a breast pad mould or is firstly prepared into a sheet material and then is subjected to compression molding and shaping treatment.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (9)
1. The light-fast natural latex foaming material is characterized by comprising an ultraviolet absorbent, wherein the ultraviolet absorbent is one or more of modified benzotriazole compound series.
2. The light-fast natural latex foam material as claimed in claim 1, wherein said modified benzotriazole compound is prepared by mixing benzotriazole compound, dispersant and water according to a certain proportion, the molecular weight of said benzotriazole compound is 9600-23000, the structural formula of said benzotriazole compound is as follows,
wherein R is1 R2 R3 R4 R5Each being an alkyl group of different carbon number.
3. The light-fast natural latex foam according to claim 1, wherein the modified benzotriazole compound is modified by the following method:
adding 1-methyl-3-hexyl imidazole bromide ionic liquid and benzotriazole compound in a mass ratio of 1:10-1:1 into purified water, wherein the solid contents of the two are 40% -50%, adjusting the pH value to 8.1 by using ammonia water, heating the mixture to 70 ℃, and grinding for 60min at the rotation speed of a grinder of 5000 r/min.
4. The light-fast natural latex foam according to claim 1, further comprising natural latex, a stabilizer, a vulcanizing agent, a vulcanization accelerator, an activator, an antioxidant, a gelling agent, and a foaming agent.
5. The sun-resistant natural latex foam material according to claim 4, comprising 50 to 90 parts by weight of natural latex, 1 to 2 parts by weight of stabilizer, 0.5 to 4.0 parts by weight of ultraviolet absorber, 1.0 to 2.0 parts by weight of vulcanizing agent, 0.5 to 1.0 part by weight of vulcanization accelerator, 2.0 to 5.0 parts by weight of vulcanization activator, 0.4 to 0.8 part by weight of anti-aging agent, 1.0 to 6.0 parts by weight of gelling agent, and 2.0 to 5.0 parts by weight of foaming agent.
6. The light-fast natural latex foam material as claimed in claim 5, wherein the natural latex has a solid content of 50-70% and an ammonia content of 0.1-0.3; preferably, the stabilizer is one or more of potassium pyrophosphate, potassium ricinoleate and potassium oleate; preferably, the vulcanizing agent is sulfur; preferably, the vulcanization accelerator is one or more of zinc diethyldithiocarbamate, 2-mercaptobenzothiazole and diphenylguanidine; preferably, the vulcanizing activator is zinc oxide; preferably, the anti-aging agent is selected from one or more of anti-aging agents 1010, 445 and 616; preferably, the gelling agent is ammonium sulfate or sodium fluosilicate; preferably, the foaming agent is a saponified product of oleic acid, castor oil and the like, or one or more of other soaps.
7. A process for the preparation of the light fast natural latex foam according to any of claims 1 to 6, comprising the steps of:
firstly, a certain amount of natural latex is taken in a container, then a vulcanizing agent, a vulcanization accelerator, a foaming agent, a stabilizer, an anti-aging agent and an ultraviolet absorbent are added, and stirring and curing are carried out at a certain temperature; preferably, in the first step, the stirring temperature is 20-40 ℃, and the curing time is 5-24 hours;
foaming the mixture by a high-speed stirring method, and adding a vulcanization activator and a gelling agent dispersoid; preferably, in the second step, a sample preparation device or a foaming machine can be adopted in a foaming manner of matching the latex;
thirdly, continuously stirring the mixture until the mixture reaches a gel point, immediately injecting the foaming liquid into a mold, and carrying out shaping, vulcanization, washing and drying to obtain the sun-proof natural latex foaming material; preferably, in the step III, the vulcanization process is carried out in a steam box with the temperature of more than 100 ℃ for 20-30 min, the drying temperature is 100-140 ℃, and the drying time is 0.5-3 h.
8. A process for the preparation of the light fast natural latex foam according to any of claims 1 to 6, comprising the steps of:
firstly, a certain amount of natural latex is taken in a container, then a vulcanizing agent, a vulcanization accelerator, a foaming agent, a stabilizer and an anti-aging agent are added, stirred and cured at a certain temperature; preferably, in the first step, the stirring temperature is 20-40 ℃, and the curing time is 5-24 hours;
foaming the mixture by a high-speed stirring method, and adding a vulcanization activator and a gelling agent dispersoid; preferably, in the second step, a sample preparation device or a foaming machine can be adopted in a foaming manner of matching the latex;
thirdly, when the mixture is continuously stirred to the gel point, the foaming liquid is immediately injected or paved, and a semi-finished natural latex foaming material is prepared through shaping, vulcanization and washing; preferably, in the third step, the vulcanization process is a steam oven with the temperature of more than 100 ℃ for 20-30 min, the drying temperature is 100-140 ℃, and the drying time is 0.5-3 h;
diluting the ultraviolet absorbent, soaking the semi-finished product material in the working solution, padding the semi-finished product material by using a roller, and drying the semi-finished product material to obtain the sun-proof natural latex foaming material.
9. Use of the light-fast natural latex foamed material as claimed in any one of claims 1 to 6 in the field of sponge products such as household goods, clothing products and the like.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1226890A (en) * | 1997-05-08 | 1999-08-25 | 大塚化学株式会社 | 2,2'-bis(6-benzotriazolylphenol) compounds, ultraviolet absorbers comprising same, copolymers containing same, and polymer compositions containing same |
| CN1349552A (en) * | 1999-05-03 | 2002-05-15 | 西巴特殊化学品控股有限公司 | Stabilized adhesive compositions containing highly soluble, red-shifted, photostable benzotriazole UV absorbers and laminated articles derived therefrom |
| US20100086500A1 (en) * | 2008-10-04 | 2010-04-08 | Chia-Hu Chang | Ultraviolet light absorbing ketones of 2-(2-Hydroxyphenyl) benzotriazole |
| CN101696548A (en) * | 2009-10-15 | 2010-04-21 | 浙江理工大学 | Wideband, uvioresistant and highly lightfast finishing agent as well as preparation method and application thereof |
| CN112662025A (en) * | 2020-12-29 | 2021-04-16 | 江苏爱德福乳胶制品有限公司 | Anti-photoaging latex foamed product and manufacturing method thereof |
-
2021
- 2021-08-20 CN CN202110960488.2A patent/CN113652015A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1226890A (en) * | 1997-05-08 | 1999-08-25 | 大塚化学株式会社 | 2,2'-bis(6-benzotriazolylphenol) compounds, ultraviolet absorbers comprising same, copolymers containing same, and polymer compositions containing same |
| CN1349552A (en) * | 1999-05-03 | 2002-05-15 | 西巴特殊化学品控股有限公司 | Stabilized adhesive compositions containing highly soluble, red-shifted, photostable benzotriazole UV absorbers and laminated articles derived therefrom |
| US20100086500A1 (en) * | 2008-10-04 | 2010-04-08 | Chia-Hu Chang | Ultraviolet light absorbing ketones of 2-(2-Hydroxyphenyl) benzotriazole |
| CN101696548A (en) * | 2009-10-15 | 2010-04-21 | 浙江理工大学 | Wideband, uvioresistant and highly lightfast finishing agent as well as preparation method and application thereof |
| CN112662025A (en) * | 2020-12-29 | 2021-04-16 | 江苏爱德福乳胶制品有限公司 | Anti-photoaging latex foamed product and manufacturing method thereof |
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