CN113980327B - Plant fiber/natural latex sponge product and preparation method thereof - Google Patents
Plant fiber/natural latex sponge product and preparation method thereof Download PDFInfo
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- 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
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- C08J2307/00—Characterised by the use of natural rubber
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
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Abstract
A plant fiber/natural latex sponge product and a preparation method thereof belong to the technical field of preparation of natural latex sponge composite materials. The technical problem to be solved by the invention is to improve the shape memory function of the natural latex sponge. The rubber latex is mainly prepared from 100 parts by dry weight of natural latex, 2-30 parts by weight of plant fiber, 1-4 parts by weight of sulfur, 1-5 parts by weight of zinc oxide, 0.5-2.5 parts by weight of accelerator, 0.5-1.5 parts by weight of anti-aging agent, 0.05-0.2 part by weight of diffusant NF and 0.5-3 parts by weight of casein. The plant fiber/natural latex sponge prepared by the invention has the advantages of low density, low cost, water response shape memory property and oil absorption property.
Description
Technical Field
The invention belongs to the technical field of preparation of natural latex sponge composite materials; in particular to a plant fiber/natural latex sponge product and a preparation method thereof.
Background
The natural latex is derived from Hevea brasiliensis, and the prepared natural latex sponge has the advantages of porous structure, air permeability, compression fatigue resistance, rebound resilience, buffering property, low density and the like, and is widely applied to household appliances, sports goods, damping and buffering materials and the like. With the increasing demand of people on life, the requirements on the quality and the performance of the latex sponge are higher and higher. At present, the latex sponge still faces the problems of easy softening and deformation, low strength, non-renewable raw materials and the like. Therefore, the latex sponge of a single raw material is compounded, and other materials are added, so that the problems of the compounded latex are solved, and more service performances are endowed to the compounded latex sponge, and the aim of diversifying the latex sponge is fulfilled.
The plant fiber has the advantages of renewability, environmental friendliness, low cost, low density, biodegradability, abundant hydroxyl groups and the like, and is an ideal choice for obtaining the water response shape memory performance and the oil absorption performance of the composite material. However, materials composed of pure plant fibers are rarely used in the shape memory field because of their high tendency to disintegrate due to excessive hydration. Thus, the introduction of vegetable fibers into a natural latex sponge not only enhances the water-responsive shape memory and oil absorption properties of the natural latex sponge, but also allows the rubber matrix to be used as a connecting network for the vegetable fibers to avoid structural disintegration upon over-hydration.
At present, the general methods for preparing natural latex sponges are the Dunlop method and the Talalay method. The Denlupu method is mainly characterized in that natural latex is chemically foamed, added with a gelling agent for gelling treatment and poured into a mold for high-temperature shaping; the method has complicated and fussy production procedures, and mainly comprises latex matching, mechanical foaming, gelatinizing agent adding, foam rubber material injection molding, gelatinizing, vulcanizing, demolding, washing and drying. The Telab method is to inject the natural latex directly into the mold, and then to foam the latex physically by negative pressure technology and then to foam the latex by low temperature CO 2 Shaping; the model and equipment required by the tera-bud method are complex, and the investment is high, so that the method is limited in many aspects. In addition, when a reinforcing filler is added to a natural latex sponge, it is difficult for the dunlop method and the telab method to achieve a large content of the reinforcing filler while maintaining the cell structure of the natural latex sponge due to the weight and the hard-to-disperse characteristics of the filler. Therefore, a latex sponge preparation method which is low in cost, simple to operate and environment-friendly is needed.
Disclosure of Invention
The invention aims to provide a vegetable fiber/natural latex sponge product and a preparation method thereof, and the invention is realized by the following technical scheme:
a vegetable fiber/natural latex sponge product is mainly prepared from 100 parts by dry weight of natural latex, 2-30 parts by weight of vegetable fiber, 1-4 parts by weight of sulfur, 1-5 parts by weight of zinc oxide, 0.5-2.5 parts by weight of accelerator, 0.5-1.5 parts by weight of anti-aging agent, 0.05-0.2 parts by weight of diffuser NF and 0.5-3 parts by weight of casein.
The plant fiber/natural latex sponge product is characterized in that the plant fiber is one of wood fiber, cellulose, paper pulp fiber, cotton fiber and bamboo fiber, and the length of the plant fiber is less than or equal to 2cm.
The vegetable fiber/natural latex sponge product provided by the invention is characterized in that the accelerator is one or two of an accelerator M, an accelerator ZDC or an accelerator DM.
The plant fiber/natural latex sponge product provided by the invention has the anti-aging agent 2, 6-di-tert-butyl-p-cresol and/or anti-aging agent MB.
The plant fiber/natural latex sponge product has solid content of 0.5-3wt%.
The plant fiber/natural latex sponge product has solid content of 50-60wt%.
The preparation method of the plant fiber/natural latex sponge product comprises the following steps:
step 1, respectively weighing a certain mass of natural latex, plant fiber, sulfur, zinc oxide, an accelerator, an anti-aging agent, a diffusant NF and casein according to parts by weight for later use;
step 2, removing ammonia from the natural latex by using a blowing method or a formaldehyde method;
step 3, adding casein into water to prepare a casein solution with the mass concentration of 10%, and adding a diffusant NF into water to prepare a diffusant NF solution with the mass concentration of 10%;
putting sulfur, zinc oxide, an accelerator, an anti-aging agent, a powder NF solution and a casein solution into a ball mill for grinding, wherein the rotating speed of the ball mill is 300rpm, and the ball milling time is 4 hours, so as to obtain a mixed dispersion;
step 4, adding the mixed dispersoid into the natural latex subjected to ammonia removal treatment, stirring for a certain time, then curing for 6 hours at room temperature, stirring at the rotating speed of 200-1000r/min for 5-30 minutes, and obtaining cured natural latex for later use;
step 5, adding the weighed plant fiber solution into the aged natural latex, fully stirring at room temperature for 5-30min until the mixture is uniformly dispersed, and stirring at the rotating speed of 200-1000r/min to obtain a mixed solution for later use;
and 6, pouring the mixed solution obtained in the step 5 into a mold, pre-freezing at-5-4 ℃ for 3-6h, then continuously freezing at-15-30 ℃ for 24-72h, finally performing hydrothermal vulcanization on the frozen mixture at 80-100 ℃ for 1-4h under water, washing and drying to obtain the plant fiber/natural latex sponge product.
The invention relates to a preparation method of a vegetable fiber/natural latex sponge product, which comprises the following steps: zinc oxide: accelerator (b): an anti-aging agent: water: a dispersing agent NF: the mass ratio of the casein is 1-4.
The preparation method of the plant fiber/natural latex sponge product comprises the steps of freeze drying, natural air drying, vacuum drying and forced air drying.
According to the preparation method of the plant fiber/natural latex sponge product, the natural latex is frozen and formed, water in the natural latex is frozen into ice crystals, and the principle of low-temperature crystallization of the natural rubber is utilized, the ice crystals in the frozen natural latex are crystallized into water to form a gap structure in a hydrothermal environment, and meanwhile, the natural latex is vulcanized and shaped, so that the plant fiber/natural latex sponge product is prepared. Compared with the Denlupu method, no gelling agent and release agent are added in the manufacturing process, no complex equipment is used, and the cost, fuel and energy consumption are all lower than those of the Telaud method. The method combines the characteristics of the Dunlop method and the Telab method, and has the advantages of simple operation, low cost, low equipment requirement and the like.
The preparation method of the plant fiber/natural latex sponge product provided by the invention has the advantages that the plant fiber with water absorption property is added into the natural latex, and the size and the amount of ice crystals of the natural latex are controlled by utilizing the content of the added plant fiber aqueous solution, so that the purposes of controlling the density, the cell structure, the recovery rate of water response shape memory and the oil absorption rate of the natural latex sponge are achieved. The plant fiber/natural latex sponge prepared by the invention has the advantages of low density, low cost, water response shape memory property and oil absorption property, and the preparation method is simple, the raw material source is rich and renewable, and the cost is low.
The invention provides a preparation method of plant fiber/natural latex sponge, which utilizes low-temperature frozen latex molding and high-temperature vulcanization molding to manufacture plant fiber/natural latex sponge products.
Detailed Description
The embodiments of the present invention are described below, but the contents are only for the convenience of understanding the technical aspects of the present invention and are not intended to limit the present invention. It will be apparent to persons skilled in the relevant art that various changes in form and detail can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
The first specific implementation way is as follows:
a vegetable fiber/natural latex sponge product is mainly prepared from 100 parts by dry weight of natural latex, 2 parts by weight of sulfur, 2 parts by weight of zinc oxide, 1.5 parts by weight of an accelerator, 0.5 part by weight of an anti-aging agent, 0.05 part by weight of a diffusant NF and 0.5 part by weight of casein, and vegetable fiber/natural latex sponge product is prepared from 100 parts by weight of natural latex, 2 parts by weight of sulfur, 2 parts by weight of zinc oxide, 1.5 parts by weight of the accelerator, 0.5 part by weight of the diffusant NF and 0.5 part by weight of casein.
In the plant fiber/natural latex sponge product of the embodiment, the plant fiber is pulp fiber, and the length of the plant fiber is less than or equal to 2cm.
In the plant fiber/natural latex sponge product according to the embodiment, the accelerator is accelerator M and accelerator ZDC, and the anti-aging agent is 2, 6-di-tert-butyl-p-cresol.
In the plant fiber/natural latex sponge product according to the embodiment, the solid content of the plant fiber solution is 2wt%.
In the plant fiber/natural latex sponge product according to the embodiment, the solid content of the natural latex is 60wt%.
The preparation method of the plant fiber/natural latex sponge product comprises the following steps:
step 1, respectively weighing a certain mass of natural latex, plant fiber, sulfur, zinc oxide, a promoter, an anti-aging agent, a diffusant and casein according to parts by weight for later use;
step 2, removing ammonia from the natural latex by using a formaldehyde method;
step 3, preparing casein into a casein solution with the mass concentration of 10%, and preparing a diffusant NF solution with the mass concentration of 10% by using a diffusant NF;
placing sulfur, zinc oxide, an accelerator ZDC, an accelerator M, 2, 6-di-tert-butyl-p-cresol, water, a dispersing agent NF and casein in a ball mill for grinding at a rotation speed of 300rpm for 4h, in a mass ratio of 2;
step 4, adding the mixed dispersoid into the natural latex subjected to ammonia removal treatment, stirring at 200rpm for 20min, and then performing ripening treatment for 6h at room temperature to obtain the ripened natural latex for later use;
step 5, adding the weighed plant fiber solution into the aged natural latex, and stirring at the room temperature of 300rpm for 10min until the mixture is uniformly dispersed to obtain a mixed solution for later use;
and 6, pouring the mixed solution obtained in the step 5 into a mold, pre-freezing at the temperature of 2 ℃ for 8 hours, then continuously freezing at the temperature of-30 ℃ for 36 hours, finally performing hydrothermal vulcanization on the frozen mixture at the temperature of 95 ℃ underwater for 2.5 hours, washing, freezing and drying to obtain the plant fiber/natural latex sponge product.
The second embodiment is as follows:
a plant fiber/natural latex sponge product is mainly prepared from 100 parts by dry weight of natural latex, 3 parts by weight of sulfur, 5 parts by weight of zinc oxide, 2 parts by weight of an accelerator, 1 part by weight of an anti-aging agent, 0.1 part by weight of a diffusant NF and 0.5 part by weight of casein, and is prepared from 100 parts by dry weight of natural latex, 10 parts by weight of plant fiber.
In the plant fiber/natural latex sponge product of the embodiment, the plant fiber is wood fiber, and the length of the plant fiber is less than or equal to 2cm.
In the plant fiber/natural latex sponge product according to the embodiment, the accelerator is accelerator DM.
In the plant fiber/natural latex sponge product according to the embodiment, the antioxidant is antioxidant MB.
In the plant fiber/natural latex sponge product according to the embodiment, the solid content of the plant fiber solution is 3wt%.
In one embodiment, the natural rubber latex sponge product has a solid content of 50wt%.
The preparation method of the plant fiber/natural latex sponge product comprises the following steps:
step 1, respectively weighing a certain mass of natural latex, plant fiber, sulfur, zinc oxide, an accelerator, an anti-aging agent, a diffusant NF and casein according to parts by weight for later use;
step 2, removing ammonia from the natural latex by using a formaldehyde method;
step 3, preparing casein into a casein solution with the mass concentration of 10%, and preparing a diffusant NF into a diffusant NF solution with the mass concentration of 10%;
placing sulfur, zinc oxide, a promoter DM, an anti-aging agent MB, water, a dispersing agent NF and casein in a ball mill for grinding according to the mass ratio of 3;
step 4, adding the mixed dispersoid into the natural latex subjected to ammonia removal treatment, stirring at 300rpm for 10min, and then curing at room temperature for 6h to obtain cured natural latex for later use;
step 5, adding the weighed plant fiber solution into the aged natural latex, and stirring at the room temperature of 600rpm for 10min until the mixture is uniformly dispersed to obtain a mixed solution for later use;
and step 6, pouring the mixed solution obtained in the step 5 into a mold, pre-freezing at 4 ℃ for 8 hours, then continuously freezing at-20 ℃ for 72 hours, finally, carrying out hydrothermal vulcanization on the frozen mixture at 80 ℃ for 3 hours under water, washing and naturally drying to obtain the plant fiber/natural latex sponge product.
The third concrete implementation mode:
a plant fiber/natural latex sponge product is mainly prepared from 100 parts by dry weight of natural latex, 2 parts by weight of sulfur, 3 parts by weight of zinc oxide, 1 part by weight of an accelerator, 1 part by weight of an anti-aging agent, 0.15 part by weight of a diffusant NF and 2 parts by weight of casein, and plant fiber/natural latex sponge product is prepared from 100 parts by dry weight of natural latex, 5 parts by weight of plant fiber, 2 parts by weight of sulfur, 1 part by weight of the anti-aging agent and 1 part by weight of the casein.
In the plant fiber/natural latex sponge product of the embodiment, the plant fiber is a cellulose fiber, and the length of the plant fiber is less than or equal to 2cm.
In the plant fiber/natural latex sponge product according to the embodiment, the accelerator is an accelerator ZDC.
In the plant fiber/natural latex sponge product according to the embodiment, the anti-aging agent is 2, 6-di-tert-butyl-p-cresol.
In the plant fiber/natural latex sponge product according to the embodiment, the solid content of the plant fiber solution is 1wt%.
In the plant fiber/natural latex sponge product according to the embodiment, the solid content of the natural latex is 60wt%.
The preparation method of the plant fiber/natural latex sponge product comprises the following steps:
step 1, respectively weighing a certain mass of natural latex, cellulose fiber, sulfur, zinc oxide, an accelerator, an anti-aging agent, a diffusant NF and casein according to parts by weight for later use;
step 2, removing ammonia from the natural latex by using a blast method;
step 3, preparing casein into a casein solution with the mass concentration of 10%, and preparing a diffusant NF solution with the mass concentration of 10% by using a diffusant NF;
placing sulfur, zinc oxide, an accelerating agent ZDC, 2, 6-di-tert-butyl-p-cresol, water, a dispersing agent NF and casein in a ball mill for grinding according to a mass ratio of (2;
step 4, adding the mixed dispersoid into the natural latex subjected to ammonia removal treatment, stirring at 500rpm for 20min, and then performing ripening treatment for 6h at room temperature to obtain the ripened natural latex for later use;
step 5, adding the weighed cellulose fiber solution into the aged natural latex, and stirring at the room temperature of 500rpm for 10min until the mixture is uniformly dispersed to obtain a mixed solution for later use;
and 6, pouring the mixed solution obtained in the step 5 into a mold, pre-freezing at 0 ℃ for 10 hours, then continuously freezing at-23 ℃ for 48 hours, finally performing hydrothermal vulcanization on the frozen mixture at 90 ℃ for 3 hours under water, washing and drying in vacuum to obtain the plant fiber/natural latex sponge product.
The fourth concrete implementation mode:
a plant fiber/natural latex sponge product is mainly prepared from 100 parts by dry weight of natural latex, 4 parts by weight of sulfur, 4 parts by weight of zinc oxide, 1 part by weight of accelerator, 1 part by weight of anti-aging agent, 0.1 part by weight of diffuser NF and 2.5 parts by weight of casein.
In the plant fiber/natural latex sponge product of the embodiment, the plant fiber is cotton fiber, and the length of the plant fiber is less than or equal to 2cm.
In the plant fiber/natural latex sponge product according to the embodiment, the accelerator is accelerator ZDC, and the anti-aging agent is anti-aging agent MB.
In the plant fiber/natural latex sponge product according to the embodiment, the solid content of the plant fiber solution is 2.5wt%.
In one embodiment, the natural rubber latex sponge product has a solid content of 55wt%.
The preparation method of the plant fiber/natural latex sponge product comprises the following steps:
step 1, respectively weighing a certain mass of natural latex, plant fiber, sulfur, zinc oxide, an accelerator, an anti-aging agent, a diffusant and casein according to parts by weight for later use;
step 2, removing ammonia from the natural latex by using a formaldehyde method;
step 3, preparing casein into a casein solution with the mass concentration of 10%, and preparing a diffusant NF into a diffusant NF solution with the mass concentration of 10%;
placing sulfur, zinc oxide, a promoter ZDC, an anti-aging agent MB, water, a dispersing agent NF and casein in a ball mill for grinding according to a mass ratio of 4;
step 4, adding the mixed dispersoid into the natural latex subjected to ammonia removal treatment, stirring at 300rpm for 5min, and then performing ripening treatment for 6h at room temperature to obtain the ripened natural latex for later use;
step 5, adding the weighed plant fiber solution into the aged natural latex, and stirring at the room temperature of 1000rpm for 10min until the mixture is uniformly dispersed to obtain a mixed solution for later use;
and 6, pouring the mixed solution obtained in the step 5 into a mold, pre-freezing at-5 ℃ for 6h, then continuously freezing at-30 ℃ for 50h, finally performing hydrothermal vulcanization on the frozen mixture at 100 ℃ underwater for 2h, washing, freezing and drying to obtain the plant fiber/natural latex sponge product.
The fifth concrete implementation mode:
a natural latex sponge product is mainly prepared from 100 parts by dry weight of natural latex, 2 parts by weight of sulfur, 2 parts by weight of zinc oxide, 1 part by weight of accelerator, 1 part by weight of anti-aging agent, 0.1 part by weight of diffusant NF and 2.5 parts by weight of casein.
In the natural latex sponge product according to the present embodiment, the accelerator is an accelerator ZDC, and the antioxidant is an antioxidant MB.
In the natural latex sponge product according to the embodiment, the solid content of the natural latex is 55wt%.
The preparation method of the natural latex sponge product according to the embodiment comprises the following steps:
step 1, respectively weighing a certain mass of natural latex, sulfur, zinc oxide, an accelerator, an anti-aging agent, a diffusant NF and casein according to parts by weight for later use;
step 2, removing ammonia from the natural latex by using a formaldehyde method;
step 3, preparing casein into a casein solution with the mass concentration of 10%, and preparing a diffusant NF solution with the mass concentration of 10% by using a diffusant NF;
placing sulfur, zinc oxide, a promoter ZDC, an anti-aging agent MB, water, a dispersing agent NF and casein in a ball mill for grinding according to a mass ratio of 2;
step 4, adding the mixed dispersoid into the natural latex subjected to ammonia removal treatment, stirring at 300rpm for 5min, and then performing ripening treatment for 6h at room temperature to obtain the ripened natural latex;
step 5, adding the weighed plant fiber solution into the aged natural latex, and stirring at the room temperature of 800rpm for 10min until the mixture is uniformly dispersed to obtain a mixed solution for later use;
and 6, pouring the mixed solution obtained in the step 5 into a mold, pre-freezing at-2 ℃ for 10 hours, then continuously freezing at-30 ℃ for 24 hours, finally performing hydrothermal vulcanization on the frozen mixture at 100 ℃ under water for 3 hours, and washing, blowing and drying to obtain the natural latex sponge product.
TABLE 1 Performance test
As can be seen from table 1, the embodiments one, two, three, four and five found that the recovery rate of the water-responsive shape memory and the oil absorption rate of the natural latex sponge can be improved by changing the addition amount of the plant fiber aqueous solution by freezing the rubber latex molding at a low temperature and vulcanizing at a high temperature to manufacture a plant fiber/natural latex sponge product. The plant fiber/natural latex sponge prepared by the invention has the advantages of low density, low cost, excellent water response shape memory property, excellent oil absorption property and the like, and the preparation method is simple, the raw material source is rich and renewable, and the cost is low.
Claims (7)
1. A vegetable fiber/natural latex sponge product, characterized in that: the vegetable fiber/natural latex sponge product is mainly prepared from 100 parts by dry weight of natural latex, 2-30 parts by weight of vegetable fiber, 1-4 parts by weight of sulfur, 1-5 parts by weight of zinc oxide, 0.5-2.5 parts by weight of accelerator, 0.5-1.5 parts by weight of anti-aging agent, 0.05-0.2 parts by weight of diffusant NF and 0.5-3 parts by weight of casein;
the plant fiber is one of wood fiber, cellulose, paper pulp fiber, cotton fiber and bamboo fiber, and the length of the plant fiber is less than or equal to 2cm;
the accelerator is one or two of an accelerator M, an accelerator ZDC or an accelerator DM;
the preparation method of the plant fiber/natural latex sponge product comprises the following steps:
step 1, respectively weighing a certain mass of natural latex, plant fiber, sulfur, zinc oxide, an accelerator, an anti-aging agent, a diffusant NF and casein according to parts by weight for later use;
step 2, removing ammonia from the natural latex by using a blast method or a formaldehyde method;
step 3, adding casein into water to prepare a casein solution with the mass concentration of 10%, and adding a diffusant NF into water to prepare a diffusant NF solution with the mass concentration of 10%;
putting sulfur, zinc oxide, a promoter, an anti-aging agent, a diffusant NF solution and a casein solution into a ball mill for grinding, wherein the rotating speed of the ball mill is 300rpm, and the ball milling time is 4 hours, so as to obtain a mixed dispersion;
step 4, adding the mixed dispersoid into the natural latex subjected to ammonia removal treatment, stirring for a certain time, then curing for 6 hours at room temperature, stirring at the rotating speed of 200-1000r/min for 5-30 minutes, and obtaining cured natural latex for later use;
step 5, adding the weighed plant fiber solution into the aged natural latex, fully stirring at room temperature for 5-30min until the natural latex is uniformly dispersed, and stirring at the rotating speed of 200-1000r/min to obtain a mixed solution for later use;
and step 6, pouring the mixed solution obtained in the step 5 into a mold, pre-freezing at the temperature of-5-4 ℃ for 3-6h, then continuously freezing at the temperature of-15 to-30 ℃ for 24-72h, finally, carrying out hydrothermal vulcanization on the frozen mixture at the temperature of 80-100 ℃ underwater for 1-4h, washing and drying to obtain the plant fiber/natural latex sponge product.
2. The vegetable fiber/natural latex sponge product as claimed in claim 1, wherein: the anti-aging agent is 2, 6-di-tert-butyl-p-cresol and/or anti-aging agent MB.
3. The vegetable fiber/natural latex sponge product as claimed in claim 2, wherein: the solid content of the plant fiber solution is 0.5-3wt%.
4. A vegetable fiber/natural latex sponge product as claimed in claim 3, wherein: the natural rubber latex has a solid content of 50 to 60wt%.
5. A method of preparing a vegetable fibre/natural latex sponge product as claimed in any one of claims 1 to 4, wherein: the method comprises the following steps:
step 1, respectively weighing a certain mass of natural latex, plant fiber, sulfur, zinc oxide, a promoter, an anti-aging agent, a diffusant NF and casein according to parts by weight for later use;
step 2, removing ammonia from the natural latex by using a blowing method or a formaldehyde method;
step 3, adding casein into water to prepare a casein solution with the mass concentration of 10%, and adding a diffusant NF into water to prepare a diffusant NF solution with the mass concentration of 10%;
putting sulfur, zinc oxide, an accelerator, an anti-aging agent, a powder NF solution and a casein solution into a ball mill for grinding, wherein the rotating speed of the ball mill is 300rpm, and the ball milling time is 4 hours, so as to obtain a mixed dispersion;
step 4, adding the mixed dispersoid into the natural latex subjected to ammonia removal treatment, stirring for a certain time, then curing for 6 hours at room temperature, stirring at the rotating speed of 200-1000r/min for 5-30 minutes, and obtaining cured natural latex for later use;
step 5, adding the weighed plant fiber solution into the aged natural latex, fully stirring at room temperature for 5-30min until the natural latex is uniformly dispersed, and stirring at the rotating speed of 200-1000r/min to obtain a mixed solution for later use;
and 6, pouring the mixed solution obtained in the step 5 into a mold, pre-freezing at-5-4 ℃ for 3-6h, then continuously freezing at-15-30 ℃ for 24-72h, finally performing hydrothermal vulcanization on the frozen mixture at 80-100 ℃ for 1-4h under water, washing and drying to obtain the plant fiber/natural latex sponge product.
6. The method of claim 5, wherein the plant fiber/natural latex sponge product is prepared by the following steps: the sulfur: zinc oxide: accelerator (b): an anti-aging agent: water: a dispersing agent NF: the mass ratio of the casein to the casein is 1 to 4:1 to 5:0.5 to 2.5:0.5 to 1.5:2 to 20:0.05 to 0.2:0.5 to 3.
7. The method of claim 6, wherein the plant fiber/natural latex sponge product is prepared by the following steps: the drying method comprises freeze drying, natural air drying, vacuum drying and forced air drying.
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| CN87103134A (en) * | 1987-04-26 | 1987-11-18 | 石钰镐 | Fiber latex sponge manufacture method and sponge product |
| ITMI20042159A1 (en) * | 2004-11-11 | 2005-02-11 | Sapsa Bedding S R L | PROCEDURE FOR THE MANUFACTURE OF AN ARTICLE IN LATEX FOAM AND ITS ARTICLE IN LATEX FOAM |
| CN100432134C (en) * | 2006-09-07 | 2008-11-12 | 暨南大学 | Composite material of modified micro plant fiber powder and natural rubber and its prepn process and application |
| CN101550244A (en) * | 2009-03-11 | 2009-10-07 | 暨南大学 | Composite soft heat insulating material, preparation method and applications thereof |
| CN110483850A (en) * | 2019-09-02 | 2019-11-22 | 广东黛维斯美内衣实业有限公司 | A kind of latex foam, preparation method and the application on insert of brassiere |
| CN110819132A (en) * | 2019-11-22 | 2020-02-21 | 湖南工业大学 | Plant fiber-based composite material and preparation method and application thereof |
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