CN110845774A - Flame-retardant rubber and preparation method thereof - Google Patents
Flame-retardant rubber and preparation method thereof Download PDFInfo
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- CN110845774A CN110845774A CN201911211484.3A CN201911211484A CN110845774A CN 110845774 A CN110845774 A CN 110845774A CN 201911211484 A CN201911211484 A CN 201911211484A CN 110845774 A CN110845774 A CN 110845774A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
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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
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The invention discloses a flame-retardant rubber and a preparation method thereof, wherein the flame-retardant rubber is prepared from the following raw materials in parts by weight: 50-65 parts of natural rubber, 20-30 parts of dandelion extract, 4-10 parts of kaolinite, 2-5 parts of antioxidant, 1-3 parts of lubricant, 1-3 parts of foaming agent, 2-4 parts of brucite fiber, 1-3 parts of lignin, 1-3 parts of stabilizer, 2-4 parts of plasticizer, 2-8 parts of coupling agent, 1-3 parts of curing agent, 1-3 parts of fire retardant polyether, 2-6 parts of carbon black, 8-16 parts of zeolite powder, 3-7 parts of modified flame retardant, 4-9 parts of quartz powder, 4-8 parts of antioxidant and 2-4 parts of accelerator. The heat-insulating material is simple to prepare, has higher flame retardant property under the synergistic effect of the synergistic component dandelion extract and the components, can be normally used at high temperature, and greatly expands the application range, and brucite fiber and lignin form a fiber net structure, so that the bending resistance, tensile strength and toughness of the heat-insulating material are greatly improved, and the stabilizer is added, so that the stability of rubber can be maintained, and the decomposition and aging of the rubber are prevented.
Description
Technical Field
The invention relates to the field of preparation of flame-retardant rubber, in particular to flame-retardant rubber and a preparation method thereof.
Background
Rubber is an important component of chemical industry, and rubber products such as tires, rubber tubes, adhesive tapes, rubber rollers, rubber sealing rings, rubberized fabric products and the like are widely applied to various industries of national economy such as automobile production, aircraft manufacturing, crude oil transportation, electronic communication, hospitals and the like, and become one of important basic industries. At present, the basic raw materials of the rubber industry are natural rubber and synthetic rubber, however, no matter natural rubber obtained from the nature or synthetic rubber obtained by human beings through an industrialized means at present, although the natural rubber or the synthetic rubber has precious high elasticity and other series of excellent performances, the flame retardant performance and the high temperature resistance of the natural rubber or the synthetic rubber cannot meet the requirements of industrial production, and meanwhile, the application field of the natural rubber or the synthetic rubber is greatly limited.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the flame-retardant rubber and the preparation method thereof, the flame-retardant rubber is simple to prepare, has higher flame-retardant property under the synergistic action of the synergistic component dandelion extract and each component, can be normally used at high temperature, and greatly expands the application range, brucite fiber and lignin form a fiber mesh structure, so that the bending resistance, tensile strength and toughness of the heat-insulating material are greatly improved, and the stability of the rubber can be maintained by adding the stabilizer to prevent the rubber from being decomposed and aged.
In order to achieve the aim of the invention, the invention adopts the specific scheme that:
the flame-retardant rubber is prepared from the following raw materials in parts by weight: 50-65 parts of natural rubber, 20-30 parts of dandelion extract, 4-10 parts of kaolinite, 2-5 parts of antioxidant, 1-3 parts of lubricant, 1-3 parts of foaming agent, 2-4 parts of brucite fiber, 1-3 parts of lignin, 1-3 parts of stabilizer, 2-4 parts of plasticizer, 2-8 parts of coupling agent, 1-3 parts of curing agent, 1-3 parts of fire retardant polyether, 2-6 parts of carbon black, 8-16 parts of zeolite powder, 3-7 parts of modified flame retardant, 4-9 parts of quartz powder, 4-8 parts of antioxidant and 2-4 parts of accelerator.
Further, the preparation method of the flame retardant rubber comprises the following steps:
(1) weighing the raw material components according to the weight part ratio;
(2) adding natural rubber, dandelion extract, kaolinite, carbon black, zeolite powder, modified flame retardant, quartz powder and accelerant into a rubber mixing mill for mixing, and mixing for 30-40min at the temperature of 65-80 ℃;
(3) adding antioxidant, lubricant, foaming agent, brucite fiber, lignin, stabilizer, plasticizer, coupling agent, curing agent, fire retardant polyether and antioxidant, heating to 80-90 deg.C, and continuously mixing for 12-18 min;
(4) stirring to mix evenly, putting into a steel mould, hot-pressing and molding under the conditions that the compression ratio is 1.3-2.5 and the temperature is 210-240 ℃, the time of hot-pressing and molding is 3-5 hours, cooling and taking out to obtain the flame-retardant rubber material.
Further, the preparation method of the dandelion extract comprises the following steps: mashing herba Taraxaci, adding hydrochloric acid methanol, and homogenizing to obtain homogenate; placing the homogenate in a dark environment, and leaching for 2 hours; mixing the leaching solution with ethanol, performing ultrasonic extraction twice, and recovering ethanol; after ultrasonic extraction, centrifugally separating the leaching liquor, taking supernatant, adding active carbon, and decoloring; and (4) passing the decolored supernatant through a macroporous resin column to complete impurity separation, and concentrating the supernatant after impurity separation to half of the original volume to obtain the product.
Further, the coupling agent is a titanate coupling agent, and the curing agent is one or two of m-xylylenediamine and diethylenetriamine.
Further, the antioxidant is one of hindered phenol antioxidant, phosphite antioxidant and sulfur-containing antioxidant; the lubricant is formed by mixing a silicon lubricant and an amide lubricant.
The invention has the beneficial effects that:
the heat-insulating material is simple to prepare, has higher flame retardant property under the synergistic effect of the synergistic component dandelion extract and the components, can be normally used at high temperature, and greatly expands the application range, and brucite fiber and lignin form a fiber net structure, so that the bending resistance, tensile strength and toughness of the heat-insulating material are greatly improved, and the stabilizer is added, so that the stability of rubber can be maintained, and the decomposition and aging of the rubber are prevented.
Detailed Description
The present invention is further described below by way of specific examples, but the present invention is not limited to only the following examples. Variations, combinations, or substitutions of the invention, which are within the scope of the invention or the spirit, scope of the invention, will be apparent to those of skill in the art and are within the scope of the invention.
The flame-retardant rubber is prepared from the following raw materials in parts by weight: 50-65 parts of natural rubber, 20-30 parts of dandelion extract, 4-10 parts of kaolinite, 2-5 parts of antioxidant, 1-3 parts of lubricant, 1-3 parts of foaming agent, 2-4 parts of brucite fiber, 1-3 parts of lignin, 1-3 parts of stabilizer, 2-4 parts of plasticizer, 2-8 parts of coupling agent, 1-3 parts of curing agent, 1-3 parts of fire retardant polyether, 2-6 parts of carbon black, 8-16 parts of zeolite powder, 3-7 parts of modified flame retardant, 4-9 parts of quartz powder, 4-8 parts of antioxidant and 2-4 parts of accelerator.
The preparation method of the flame-retardant rubber comprises the following steps:
(1) weighing the raw material components according to the weight part ratio;
(2) adding natural rubber, dandelion extract, kaolinite, carbon black, zeolite powder, modified flame retardant, quartz powder and accelerant into a rubber mixing mill for mixing, and mixing for 30-40min at the temperature of 65-80 ℃;
(3) adding antioxidant, lubricant, foaming agent, brucite fiber, lignin, stabilizer, plasticizer, coupling agent, curing agent, fire retardant polyether and antioxidant, heating to 80-90 deg.C, and continuously mixing for 12-18 min;
(4) stirring to mix evenly, putting into a steel mould, hot-pressing and molding under the conditions that the compression ratio is 1.3-2.5 and the temperature is 210-240 ℃, the time of hot-pressing and molding is 3-5 hours, cooling and taking out to obtain the flame-retardant rubber material.
The preparation method of the dandelion extract comprises the following steps: mashing herba Taraxaci, adding hydrochloric acid methanol, and homogenizing to obtain homogenate; placing the homogenate in a dark environment, and leaching for 2 hours; mixing the leaching solution with ethanol, performing ultrasonic extraction twice, and recovering ethanol; after ultrasonic extraction, centrifugally separating the leaching liquor, taking supernatant, adding active carbon, and decoloring; and (4) passing the decolored supernatant through a macroporous resin column to complete impurity separation, and concentrating the supernatant after impurity separation to half of the original volume to obtain the product.
The coupling agent is a titanate coupling agent, and the curing agent is one or two of m-xylylenediamine and diethylenetriamine.
The antioxidant is one of hindered phenol antioxidant, phosphite antioxidant and sulfur-containing antioxidant; the lubricant is formed by mixing a silicon lubricant and an amide lubricant.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. The flame-retardant rubber is characterized by being prepared from the following raw materials in parts by weight: 50-65 parts of natural rubber, 20-30 parts of dandelion extract, 4-10 parts of kaolinite, 2-5 parts of antioxidant, 1-3 parts of lubricant, 1-3 parts of foaming agent, 2-4 parts of brucite fiber, 1-3 parts of lignin, 1-3 parts of stabilizer, 2-4 parts of plasticizer, 2-8 parts of coupling agent, 1-3 parts of curing agent, 1-3 parts of fire retardant polyether, 2-6 parts of carbon black, 8-16 parts of zeolite powder, 3-7 parts of modified flame retardant, 4-9 parts of quartz powder, 4-8 parts of antioxidant and 2-4 parts of accelerator.
2. The flame retardant rubber and the preparation method thereof according to claim 1, wherein the preparation method of the flame retardant rubber comprises the following steps:
(1) weighing the raw material components according to the weight part ratio;
(2) adding natural rubber, dandelion extract, kaolinite, carbon black, zeolite powder, modified flame retardant, quartz powder and accelerant into a rubber mixing mill for mixing, and mixing for 30-40min at the temperature of 65-80 ℃;
(3) adding antioxidant, lubricant, foaming agent, brucite fiber, lignin, stabilizer, plasticizer, coupling agent, curing agent, fire retardant polyether and antioxidant, heating to 80-90 deg.C, and continuously mixing for 12-18 min;
(4) stirring to mix evenly, putting into a steel mould, hot-pressing and molding under the conditions that the compression ratio is 1.3-2.5 and the temperature is 210-240 ℃, the time of hot-pressing and molding is 3-5 hours, cooling and taking out to obtain the flame-retardant rubber material.
3. The flame retardant rubber and the preparation method thereof according to claim 1, wherein the preparation method of the dandelion extract comprises the following steps: mashing herba Taraxaci, adding hydrochloric acid methanol, and homogenizing to obtain homogenate; placing the homogenate in a dark environment, and leaching for 2 hours; mixing the leaching solution with ethanol, performing ultrasonic extraction twice, and recovering ethanol; after ultrasonic extraction, centrifugally separating the leaching liquor, taking supernatant, adding active carbon, and decoloring; and (4) passing the decolored supernatant through a macroporous resin column to complete impurity separation, and concentrating the supernatant after impurity separation to half of the original volume to obtain the product.
4. The flame retardant rubber and the preparation method thereof according to claim 1, wherein the coupling agent is titanate coupling agent, and the curing agent is one or two of m-xylylenediamine and diethylenetriamine.
5. The flame retardant rubber and the preparation method thereof according to claim 1, wherein the antioxidant is one of hindered phenol antioxidant, phosphite antioxidant and sulfur-containing antioxidant; the lubricant is formed by mixing a silicon lubricant and an amide lubricant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911211484.3A CN110845774A (en) | 2019-12-02 | 2019-12-02 | Flame-retardant rubber and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911211484.3A CN110845774A (en) | 2019-12-02 | 2019-12-02 | Flame-retardant rubber and preparation method thereof |
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| CN110845774A true CN110845774A (en) | 2020-02-28 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105367990A (en) * | 2015-10-26 | 2016-03-02 | 北京东方雨虹防水技术股份有限公司 | Heat-insulating fireproof material based on phenolic aldehyde hollow microspheres and preparation method thereof |
| CN106479067A (en) * | 2016-11-25 | 2017-03-08 | 安徽美翔塑业有限公司 | A kind of flame retardant rubber composite and preparation method thereof |
| CN108822417A (en) * | 2018-07-18 | 2018-11-16 | 合肥峰腾节能科技有限公司 | A kind of rubber flame-retarded thermal insulation material and preparation method thereof |
| CN109161062A (en) * | 2018-08-21 | 2019-01-08 | 苏州谦合诚智能科技有限公司 | A kind of high flame retardant compounded rubber and preparation method thereof |
-
2019
- 2019-12-02 CN CN201911211484.3A patent/CN110845774A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105367990A (en) * | 2015-10-26 | 2016-03-02 | 北京东方雨虹防水技术股份有限公司 | Heat-insulating fireproof material based on phenolic aldehyde hollow microspheres and preparation method thereof |
| CN106479067A (en) * | 2016-11-25 | 2017-03-08 | 安徽美翔塑业有限公司 | A kind of flame retardant rubber composite and preparation method thereof |
| CN108822417A (en) * | 2018-07-18 | 2018-11-16 | 合肥峰腾节能科技有限公司 | A kind of rubber flame-retarded thermal insulation material and preparation method thereof |
| CN109161062A (en) * | 2018-08-21 | 2019-01-08 | 苏州谦合诚智能科技有限公司 | A kind of high flame retardant compounded rubber and preparation method thereof |
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Application publication date: 20200228 |