CN113788978A - Production process for preparing natural latex sponge by using high-temperature die - Google Patents
Production process for preparing natural latex sponge by using high-temperature die Download PDFInfo
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- CN113788978A CN113788978A CN202111213254.8A CN202111213254A CN113788978A CN 113788978 A CN113788978 A CN 113788978A CN 202111213254 A CN202111213254 A CN 202111213254A CN 113788978 A CN113788978 A CN 113788978A
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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
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G9/00—Bed-covers; Counterpanes; Travelling rugs; Sleeping rugs; Sleeping bags; Pillows
- A47G9/10—Pillows
-
- 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
- C08J9/0023—Use of organic additives containing oxygen
-
- 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
-
- 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
- C08J9/0066—Use of inorganic compounding ingredients
-
- 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
- C08J9/009—Use of pretreated compounding ingredients
-
- 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
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G9/00—Bed-covers; Counterpanes; Travelling rugs; Sleeping rugs; Sleeping bags; Pillows
- A47G9/10—Pillows
- A47G2009/1018—Foam pillows
-
- 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
-
- 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
- C08J2471/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
- C08J2471/02—Polyalkylene oxides
Abstract
The invention discloses a production process for preparing natural latex sponge by using a high-temperature die, which comprises the following steps: (1) firstly, mixing, stirring and curing natural latex, sulfur, zinc oxide and the like according to a certain weight ratio; then adding stabilizer (including ammonium laurate and condensation compound of ethylene oxide and fatty alcohol) for latex into the latex solution in batches according to time period, and stirring uniformly; (2) foaming the mixed solution and the coagulant according to a certain weight ratio, and injecting the foamed mixed solution into a high-temperature mold; (3) the finished product is prepared by steam vulcanization, water washing and drying. The invention utilizes the high-temperature mould to prepare the natural latex sponge, improves the stability of the foaming latex by adding the stabilizer, ensures that the foaming latex can still be normally produced under the condition that the temperature of the mould reaches 40-55 ℃, not only reduces the energy consumption in the process production process and improves the production efficiency, but also keeps the excellent performance of the sponge product, and has good economic benefit and wide market prospect.
Description
Technical Field
The invention belongs to the technical field of latex sponges, and particularly relates to a production process for preparing natural latex sponges by using a high-temperature mold.
Background
With the increasing importance of consumers on environmental protection and health, the natural latex product is popular with people due to the characteristics of natural raw materials, superior performance and the like, and the market demand of the current natural latex pillow and mattress is very large.
In the production process of the latex sponge, after steam vulcanization, the mould keeps a higher temperature, so that the latex sponge is inconvenient to return to the previous procedure for direct injection molding production when the high temperature is kept.
Particularly, in the process of the Dunlop production process, the mold needs to be cooled to 28-32 ℃ for normal use, if the temperature of the mold is too high, the latex sponge is easily affected by the mold to have the defects of edge shrinkage, wrinkle, cavities and the like, although the generation of the edge shrinkage problem can be reduced to a certain extent by reducing the use amount of the coagulant, the structure of the relative product is poor, the damage rate of the product is increased, and the qualification rate of the product is greatly reduced.
Therefore, the mold is cooled by pouring cold water and cooling with air conditioning cold air in the dunlop production process, which results in increased production energy consumption and low production efficiency of the natural latex sponge product and increases the cost of the natural latex sponge product.
Disclosure of Invention
Aiming at the problems, the invention provides a production process for preparing natural latex sponge by using a high-temperature die, which improves the production efficiency and reduces the cost.
The technical scheme of the invention is as follows: the method comprises the following steps:
(1) firstly, mechanically stirring and uniformly mixing natural latex, sulfur, castor oil, potassium pyrophosphate, potassium oleate and zinc oxide, adding ammonium laurate, continuously stirring for 8-12 hours at the temperature of 26-28 ℃ for ripening, then adding a condensation compound of ethylene oxide and fatty alcohol, and stirring for 0.5-2 hours to form a liquid rubber material;
(2) adding the prepared sizing material and sodium fluosilicate into foaming equipment together for foaming, and injecting into a high-temperature mold;
(3) vulcanizing by a steam vulcanizing device, washing the vulcanized product by water, and drying to finish the vulcanization.
Comprises the following components in parts by weight: 100 parts of natural latex, 1-8 parts of sulfur, 1-5 parts of potassium oleate, 0.5-5 parts of castor oil, 0.1-5 parts of potassium pyrophosphate, 1-5 parts of sodium fluosilicate, 1-8 parts of zinc oxide, 0.05-0.1 part of ammonium laurate and 0.3-1 part of condensation compound of ethylene oxide and fatty alcohol.
The zinc oxide is modified zinc oxide, and the modified zinc oxide comprises the following components in parts by weight: 8-15 parts of water, 0.01-0.1 part of sodium hydroxide, 2-6 parts of zinc oxide and 0.5-2 parts of tetraethyl orthosilicate.
The preparation method of the modified zinc oxide comprises the following steps: adding sodium hydroxide into water to adjust the pH value to 9-11; adding zinc oxide into water, stirring and dispersing uniformly; and adding tetraethyl orthosilicate, continuously stirring for 4-6h, and standing to finish.
In the step (2), the temperature of the high-temperature die is 40-55 ℃.
The mould is a pillow mould or a mattress mould.
In the working process, the invention adopts a method of adding different stabilizers at different time intervals, and aims to keep the stability of continuous processing of the high-temperature mould of the natural latex without a mould cooling means.
The addition of ammonium laurate can increase the particle charge and the repulsive potential energy due to the adsorption of the ammonium laurate on the interface of latex particles, greatly improve the mechanical stability of natural latex and ensure that the rubber material keeps higher mechanical stability in subsequent processing.
The condensation product of ethylene oxide and fatty alcohol is a nonionic surfactant, so that the latex can not be solidified by electrolyte, the hydration degree of colloidal particles can be increased, and the chemical stability of the latex can be improved. The subsequent addition of the condensation compound of ethylene oxide and fatty alcohol can improve the stability of the sizing material in the process of foaming and injecting into a high-temperature die.
The high-temperature natural latex mould product has stable processing process and the prepared sponge has excellent performance.
Detailed Description
The invention comprises the following steps: the method comprises the following steps:
(1) firstly, mechanically stirring and uniformly mixing natural latex, sulfur, castor oil, potassium pyrophosphate, potassium oleate and zinc oxide, adding ammonium laurate, continuously stirring for 8-12 hours at the temperature of 26-28 ℃ for ripening, then adding a condensation compound of ethylene oxide and fatty alcohol, and stirring for 0.5-2 hours to form a liquid rubber material;
(2) adding the prepared sizing material and sodium fluosilicate into foaming equipment together for foaming, and injecting into a high-temperature mold;
(3) vulcanizing by a steam vulcanizing device, washing the vulcanized product by water, and drying to finish the vulcanization.
The invention aims to add the environment-friendly stabilizer without changing the condition of the traditional latex pillow production process. Because of the particularity of the natural latex, the stability of the natural latex in the processing process of high-temperature mould products is poor.
The method of adding different stabilizers at different time intervals is adopted, so that the method can keep the stability of continuous processing of the high-temperature mould of the natural latex without a mould cooling means.
Comprises the following components in parts by weight: 100 parts of natural latex, 1-8 parts of sulfur, 1-5 parts of potassium oleate, 0.5-5 parts of castor oil, 0.1-5 parts of potassium pyrophosphate, 1-5 parts of sodium fluosilicate, 1-8 parts of zinc oxide, 0.05-0.1 part of ammonium laurate and 0.3-1 part of condensation compound of ethylene oxide and fatty alcohol.
The zinc oxide is modified zinc oxide, and the modified zinc oxide comprises the following components in parts by weight: 8-15 parts of water, 0.01-0.1 part of sodium hydroxide, 2-6 parts of zinc oxide and 0.5-2 parts of tetraethyl orthosilicate.
The preparation method of the modified zinc oxide comprises the following steps: adding sodium hydroxide into water to adjust the pH value to 9-11; adding zinc oxide into water, stirring and dispersing uniformly; and adding tetraethyl orthosilicate, continuously stirring for 4-6h, and standing to finish.
The zinc oxide is modified, tetraethyl orthosilicate is hydrolyzed under an alkaline condition to generate silicon dioxide, the silicon dioxide is coated on the surface of the zinc oxide, the dispersibility of the zinc oxide is improved, the surface of the zinc oxide can be prevented from contacting latex, the gel speed of the zinc oxide in the foaming process is reduced, and when the zinc oxide is vulcanized at a high temperature, a thin silicon dioxide layer is dissolved under the alkaline condition, so that the vulcanization activity can be fully exerted, and the phenomenon of glue death caused by uneven dispersion of the zinc oxide is avoided.
In the step (2), the temperature of the high-temperature die is 40-55 ℃. After the mold is subjected to steam vulcanization, the mold is convenient to directly return to be utilized, cooling is not needed, time is saved, and efficiency is improved.
The mould is a pillow mould or a mattress mould, and is suitable for the processing requirements of different products.
The invention utilizes the high-temperature mould to prepare the natural latex sponge, improves the stability of the foaming latex by adding the stabilizer, ensures that the foaming latex can still be normally produced under the condition that the temperature of the mould reaches 40-55 ℃, not only reduces the energy consumption in the process production process and improves the production efficiency, but also keeps the excellent performance of the sponge product, and has good economic benefit and wide market prospect.
The concrete application is as follows:
example 1
A production process for preparing natural latex sponge by using a high-temperature mold comprises the following steps:
(1) mechanically stirring and uniformly mixing natural latex, sulfur, castor oil, potassium pyrophosphate, potassium oleate and zinc oxide, and continuously stirring for 10 hours at the temperature of 28 ℃ to mature to form liquid rubber;
(2) adding the prepared sizing material and sodium fluosilicate together into foaming equipment according to a certain weight ratio for foaming, and injecting into a mold with the temperature of 50 ℃;
(3) vulcanizing by a steam vulcanizing device, and washing and drying the vulcanized product by water.
The embodiment comprises the following components in parts by weight: 100 parts of natural latex, 7 parts of sulfur, 3 parts of potassium oleate, 1 part of castor oil, 0.1 part of potassium pyrophosphate, 4.5 parts of sodium fluosilicate and 5 parts of zinc oxide.
The zinc oxide is modified zinc oxide, and the modified zinc oxide comprises the following components in parts by weight: 15 parts of water, 0.1 part of sodium hydroxide, 6 parts of zinc oxide and 2 parts of tetraethyl orthosilicate.
The preparation of the modified zinc oxide comprises the following steps: adding sodium hydroxide into water to adjust the pH value to 9-11; adding zinc oxide into water, stirring and dispersing uniformly; and adding tetraethyl orthosilicate, continuously stirring for 4-6h, and standing to finish.
Example 2
A production process for preparing natural latex sponge by using a high-temperature mold comprises the following steps:
(1) mechanically stirring and uniformly mixing natural latex, sulfur, castor oil, potassium pyrophosphate, potassium oleate and zinc oxide, adding ammonium laurate, continuously stirring for 10 hours at the temperature of 28 ℃ to ripen, then adding a condensation compound of ethylene oxide and fatty alcohol, and stirring for 1 hour to form a liquid rubber material;
(2) adding the prepared sizing material and sodium fluosilicate together into foaming equipment according to a certain weight ratio for foaming, and injecting into a mold with the temperature of 50 ℃;
(3) vulcanizing by a steam vulcanizing device, and washing and drying the vulcanized product by water.
The embodiment comprises the following components in parts by weight: 100 parts of natural latex, 7 parts of sulfur, 3 parts of potassium oleate, 1 part of castor oil, 0.1 part of potassium pyrophosphate, 4.5 parts of sodium fluosilicate, 5 parts of zinc oxide, 0.08 part of ammonium laurate and 0.7 part of condensation compound of ethylene oxide and fatty alcohol.
The zinc oxide is modified zinc oxide, and the modified zinc oxide comprises the following components in parts by weight: 15 parts of water, 0.1 part of sodium hydroxide, 6 parts of zinc oxide and 2 parts of tetraethyl orthosilicate.
The preparation of the modified zinc oxide comprises the following steps: adding sodium hydroxide into water to adjust the pH value to 9-11; adding zinc oxide into water, stirring and dispersing uniformly; and adding tetraethyl orthosilicate, continuously stirring for 4-6h, and standing to finish.
Example 3
A production process for preparing natural latex sponge by using a high-temperature mold comprises the following steps:
(1) mechanically stirring and uniformly mixing natural latex, sulfur, castor oil, potassium pyrophosphate, potassium oleate and zinc oxide, adding ammonium laurate, continuously stirring for 8 hours at the temperature of 26 ℃ for ripening, then adding a condensation compound of ethylene oxide and fatty alcohol, and stirring for 0.5 hour to form a liquid rubber material;
(2) adding the prepared sizing material and sodium fluosilicate together into foaming equipment according to a certain weight ratio for foaming, and injecting into a mold with the temperature of 52 ℃;
(3) vulcanizing by a steam vulcanizing device, and washing and drying the vulcanized product by water.
The embodiment comprises the following components in parts by weight: 100 parts of natural latex, 2 parts of sulfur, 3 parts of potassium oleate, 1 part of castor oil, 0.1 part of potassium pyrophosphate, 1.5 parts of sodium fluosilicate, 4 parts of zinc oxide, 0.05 part of ammonium laurate and 0.3 part of condensation compound of ethylene oxide and fatty alcohol.
The zinc oxide is modified zinc oxide, and the modified zinc oxide comprises the following components in parts by weight: 15 parts of water, 0.1 part of sodium hydroxide, 6 parts of zinc oxide and 2 parts of tetraethyl orthosilicate.
The preparation of the modified zinc oxide comprises the following steps: adding sodium hydroxide into water to adjust the pH value to 9-11; adding zinc oxide into water, stirring and dispersing uniformly; and adding tetraethyl orthosilicate, continuously stirring for 4-6h, and standing to finish.
Example 4
A production process for preparing natural latex sponge by using a high-temperature mold comprises the following steps:
(1) mechanically stirring and uniformly mixing natural latex, sulfur, castor oil, potassium pyrophosphate, potassium oleate and zinc oxide, adding ammonium laurate, continuously stirring for 10 hours at the temperature of 27 ℃ for ripening, then adding a condensation compound of ethylene oxide and fatty alcohol, and stirring for 1 hour to form a liquid rubber material;
(2) adding the prepared sizing material and sodium fluosilicate together into foaming equipment according to a certain weight ratio for foaming, and injecting into a mold with the temperature of 54 ℃;
(3) vulcanizing by a steam vulcanizing device, and washing and drying the vulcanized product by water.
The embodiment comprises the following components in parts by weight: 100 parts of natural latex, 5 parts of sulfur, 3 parts of potassium oleate, 2 parts of castor oil, 2 parts of potassium pyrophosphate, 3 parts of sodium fluosilicate, 5 parts of zinc oxide, 0.08 part of ammonium laurate and 0.7 part of condensation compound of ethylene oxide and fatty alcohol.
The zinc oxide is modified zinc oxide, and the modified zinc oxide comprises the following components in parts by weight: 15 parts of water, 0.1 part of sodium hydroxide, 6 parts of zinc oxide and 2 parts of tetraethyl orthosilicate.
The preparation of the modified zinc oxide comprises the following steps: adding sodium hydroxide into water to adjust the pH value to 9-11; adding zinc oxide into water, stirring and dispersing uniformly; and adding tetraethyl orthosilicate, continuously stirring for 4-6h, and standing to finish.
Example 5
A production process for preparing natural latex sponge by using a high-temperature mold comprises the following steps:
(1) mechanically stirring and uniformly mixing natural latex, sulfur, castor oil, potassium pyrophosphate, potassium oleate and zinc oxide, adding ammonium laurate, continuously stirring for 12 hours at the temperature of 28 ℃ for ripening, then adding a condensation compound of ethylene oxide and fatty alcohol, and stirring for 1.5 hours to form a liquid rubber material;
(2) adding the prepared sizing material and sodium fluosilicate together into foaming equipment according to a certain weight ratio for foaming, and injecting into a mold with the temperature of 55 ℃;
(3) vulcanizing by a steam vulcanizing device, and washing and drying the vulcanized product by water.
The embodiment comprises the following components in parts by weight: 100 parts of natural latex, 7 parts of sulfur, 5 parts of potassium oleate, 4 parts of castor oil, 4 parts of potassium pyrophosphate, 4.5 parts of sodium fluosilicate, 5 parts of zinc oxide, 0.1 part of ammonium laurate and 1 part of condensation compound of ethylene oxide and fatty alcohol.
The zinc oxide is modified zinc oxide, and the modified zinc oxide comprises the following components in parts by weight: 15 parts of water, 0.1 part of sodium hydroxide, 6 parts of zinc oxide and 2 parts of tetraethyl orthosilicate.
The preparation of the modified zinc oxide comprises the following steps: adding sodium hydroxide into water to adjust the pH value to 9-11; adding zinc oxide into water, stirring and dispersing uniformly; and adding tetraethyl orthosilicate, continuously stirring for 4-6h, and standing to finish.
The results of the examples are as follows:
watch 1
According to the test results in the table I, the high-temperature mould sponge product prepared according to the traditional process (namely the embodiment 1) has more defects, but the effect of preparing the natural latex sponge by using the high-temperature mould is better, and the temperature of the mould can reach 55 ℃ at most.
The tests for the mechanical and chemical stability of the natural latex carried out on the example mixed sizes according to the standards GB/T8301-2008 and NY/T1528-2007 are shown in Table two.
| Test items | Example 1 (comparative example) | Example 2 | Example 3 | Example 4 | Example 5 |
| Stable/s of machine | 551 | 587 | 592 | 584 | 593 |
| Stabilization/s | 97 | 114 | 109 | 107 | 112 |
Watch two
According to the test results in the table II, the stability of the natural latex is obviously improved by the matching use of the stabilizer.
Claims (6)
1. A production process for preparing natural latex sponge by using a high-temperature mold is characterized by comprising the following steps:
(1) firstly, mechanically stirring and uniformly mixing natural latex, sulfur, castor oil, potassium pyrophosphate, potassium oleate and zinc oxide, adding ammonium laurate, continuously stirring for 8-12 hours at the temperature of 26-28 ℃ for ripening, then adding a condensation compound of ethylene oxide and fatty alcohol, and stirring for 0.5-2 hours to form a liquid rubber material;
(2) adding the prepared sizing material and sodium fluosilicate into foaming equipment together for foaming, and injecting into a high-temperature mold;
(3) vulcanizing by a steam vulcanizing device, washing the vulcanized product by water, and drying to finish the vulcanization.
2. The production process for preparing the natural latex sponge by using the high-temperature mold as claimed in claim 1, which is characterized by comprising the following components in parts by weight: 100 parts of natural latex, 1-8 parts of sulfur, 1-5 parts of potassium oleate, 0.5-5 parts of castor oil, 0.1-5 parts of potassium pyrophosphate, 1-5 parts of sodium fluosilicate, 1-8 parts of zinc oxide, 0.05-0.1 part of ammonium laurate and 0.3-1 part of condensation compound of ethylene oxide and fatty alcohol.
3. The process for producing natural latex sponge using high temperature mold as claimed in claim 1 or 2, wherein: the zinc oxide is modified zinc oxide, and the modified zinc oxide comprises the following components in parts by weight: 8-15 parts of water, 0.01-0.1 part of sodium hydroxide, 2-6 parts of zinc oxide and 0.5-2 parts of tetraethyl orthosilicate.
4. The process for preparing natural latex sponge by using high temperature mold as claimed in claim 3, wherein: the preparation method of the modified zinc oxide comprises the following steps: adding sodium hydroxide into water to adjust the pH value to 9-11; adding zinc oxide into water, stirring and dispersing uniformly; and adding tetraethyl orthosilicate, continuously stirring for 4-6h, and standing to finish.
5. The process for preparing natural latex sponge using high temperature mold as claimed in claim 1, wherein the temperature of the high temperature mold in step (2) is 40-55 ℃.
6. The process for preparing natural latex sponge according to claim 1, wherein the mold is a pillow mold or a mattress mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111213254.8A CN113788978A (en) | 2021-10-19 | 2021-10-19 | Production process for preparing natural latex sponge by using high-temperature die |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111213254.8A CN113788978A (en) | 2021-10-19 | 2021-10-19 | Production process for preparing natural latex sponge by using high-temperature die |
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| CN113788978A true CN113788978A (en) | 2021-12-14 |
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| CN202111213254.8A Withdrawn CN113788978A (en) | 2021-10-19 | 2021-10-19 | Production process for preparing natural latex sponge by using high-temperature die |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106380643A (en) * | 2016-10-19 | 2017-02-08 | 江苏金世缘乳胶制品股份有限公司 | Modified zinc oxide and preparation method thereof, and application of modified zinc oxide in rubber products |
| CN110437510A (en) * | 2019-07-31 | 2019-11-12 | 中国化工株洲橡胶研究设计院有限公司 | A kind of gutta-percha/natural emulsion sponge product and preparation method thereof |
| CN110862555A (en) * | 2019-12-03 | 2020-03-06 | 中国化工株洲橡胶研究设计院有限公司 | High-temperature silicone rubber emulsion and preparation method and application thereof |
| CN111690183A (en) * | 2020-07-17 | 2020-09-22 | 江苏金世缘乳胶制品股份有限公司 | Production process of mold mattress |
-
2021
- 2021-10-19 CN CN202111213254.8A patent/CN113788978A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106380643A (en) * | 2016-10-19 | 2017-02-08 | 江苏金世缘乳胶制品股份有限公司 | Modified zinc oxide and preparation method thereof, and application of modified zinc oxide in rubber products |
| CN110437510A (en) * | 2019-07-31 | 2019-11-12 | 中国化工株洲橡胶研究设计院有限公司 | A kind of gutta-percha/natural emulsion sponge product and preparation method thereof |
| CN110862555A (en) * | 2019-12-03 | 2020-03-06 | 中国化工株洲橡胶研究设计院有限公司 | High-temperature silicone rubber emulsion and preparation method and application thereof |
| CN111690183A (en) * | 2020-07-17 | 2020-09-22 | 江苏金世缘乳胶制品股份有限公司 | Production process of mold mattress |
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Application publication date: 20211214 |
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