CN113024938A - Flame-retardant foam material and preparation method thereof - Google Patents

Flame-retardant foam material and preparation method thereof Download PDF

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Publication number
CN113024938A
CN113024938A CN202110356618.1A CN202110356618A CN113024938A CN 113024938 A CN113024938 A CN 113024938A CN 202110356618 A CN202110356618 A CN 202110356618A CN 113024938 A CN113024938 A CN 113024938A
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mixing
parts
foamed
foaming
foaming agent
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焦建培
马少怀
董占琢
田振岭
苗春燕
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Shijiazhuang Qihong New Material Products Co ltd
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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
    • C08J9/06—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 by a chemical blowing agent
    • C08J9/10—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 by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • C08J9/102—Azo-compounds
    • C08J9/103—Azodicarbonamide
    • 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
    • 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
    • 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
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
    • 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
    • C08J2311/00—Characterised by the use of homopolymers or copolymers of chloroprene
    • 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
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/08—Copolymers of ethene
    • 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
    • C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2427/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08J2427/06—Homopolymers or copolymers of vinyl chloride
    • 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
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/02—Organic and inorganic ingredients
    • 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
    • C08K5/04—Oxygen-containing compounds
    • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • 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
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/22—Expanded, porous or hollow particles
    • C08K7/24—Expanded, porous or hollow particles inorganic
    • C08K7/26—Silicon- containing compounds

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  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a flame-retardant foam material and a preparation method thereof, belonging to the technical field of high molecular compounds. The raw materials consist of the following substances: EVA, chloroprene rubber, foaming agent, DCP crosslinking agent, zinc oxide, stearic acid, PVC, aerogel SiO2(ii) a Preparation methodThe method comprises the following steps: (1) mixing the raw materials except the cross-linking agent and the foaming agent according to the proportion; (2) adding a cross-linking agent and a foaming agent to start the second-step mixing, cleaning the foaming agent in the mixing chamber, and continuously mixing to 125 ℃; (3) refining the mixed material, setting an open mill at 100-105 ℃, thinly passing for 3-5 times, rolling into a pre-foamed material block, placing the pre-foamed material block into a flat vulcanizing machine mould for foaming for 35-40min for the first time, and naturally cooling the foamed body obtained by foaming the first time to obtain the foamed plate. Has good popularization and application prospect, is applied to the heat insulation and heat preservation of automobile storage batteries and engines, and has good heat insulation, heat preservation and flame retardant properties.

Description

Flame-retardant foam material and preparation method thereof
Technical Field
The invention relates to the technical field of high molecular compounds, and particularly relates to a high-pressure polyethylene flame-retardant foam material.
Background
CR/SiO2The composite flame-retardant foam material is a novel environment-friendly material, has a non-crosslinked closed-cell structure, has high buffering capacity, has the performance characteristics of heat preservation, moisture resistance, corrosion resistance, light weight, good buffering performance, friction resistance and the like, is widely applied to inner packages and special packages of products such as automobiles, electronic products, instruments, furniture, glass, ceramics, wines, artware and the like, is widely applied to vehicle transportation and express packaging in the logistics industry, and becomes one of the most important buffering and protecting materials for transportation and packaging. In the prior art, CR/SiO2The composite flame-retardant foam material has the defects of poor buffer performance, toughness and strength, and poor heat preservation, heat insulation and flame retardance when being applied to the foam materials of automobile storage batteries and engines.
Disclosure of Invention
The invention aims to solve the technical problem of providing a flame-retardant foam material and a preparation method thereof, wherein the oxygen index of the obtained foam material is greater than 32, reaches B1 level, is fire-resistant, high-temperature resistant, shock-absorbing and sound-insulating, and is mainly used for automobile materials.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the flame-retardant foaming material comprises the following raw materials in parts by weight:
Figure BDA0003004139370000011
the preferable raw materials of the foaming material comprise the following substances in parts by weight:
Figure BDA0003004139370000012
Figure BDA0003004139370000021
aerogel SiO2The function of the method is as follows: aerogels have the lowest density and very high porosity in solid materials. This minimizes the thermal conductivity of the aerogel in the solid material, since the thermal conductivity of the gas is much smaller than that of the solid. The modified aerogel can bear high strength and resist high temperature, and the CR/EVA composite material modified by the aerogel has high strength, high toughness and good heat insulation property.
The function of stearic acid: stearic acid is used as a surfactant, which can lead the sizing material, the foaming agent and the aerogel powder to be dispersed evenly. Is also a PVC heat stabilizer, and has good lubricity and good light and heat stabilizing effects. In materials with added PVC, stearic acid helps prevent "scorching" during processing.
The preparation method comprises the following steps: (1) the raw materials except the cross-linking agent and the foaming agent are put into an internal mixer according to the mixture ratio for mixing, and the first-step mixing is finished when the mixing temperature is raised to 115 ℃; (2) adding a cross-linking agent and a foaming agent according to the proportion, starting the second-step mixing, and finishing the second-step mixing when the banburying temperature is raised to 120 ℃; cleaning the foaming agent in the banburying chamber, continuously mixing to 125 ℃, and finishing the mixing process of the banburying machine; (3) refining the poured mixed body on an open mill, setting the open mill at 100-105 ℃, thinly passing for 3-5 times, rolling into a pre-foamed block with the size of 1000mm multiplied by 500mm, raising the temperature of a flat vulcanizing machine to 135-155 ℃ in advance, then placing the pre-foamed block into a flat vulcanizing machine mould for primary foaming for 35-40min, and naturally cooling the foamed body obtained by the primary foaming to obtain the foamed plate.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the foam material prepared by the invention has low density, high flame retardant, heat insulation and heat preservation performance, and is non-toxic and harmless. The oxygen index is more than 32, reaches B1 grade, is fire-resistant, high temperature resistant, shock-absorbing and sound-insulating, and is mainly used for automobile materials.
Detailed Description
The main instruments and equipment are shown in Table 1 below
TABLE 1
Device name Model number Manufacturer of the product
Internal mixer DT-90X Daliangtong rubber and Plastic machinery Co Ltd
Open mill JZ-KZ75 Shanghai Jinzan Machinery Co., Ltd.
Flat vulcanizing machine JZ-Y04 Shanghai Jinzan Machinery Co., Ltd.
Heat insulation tester YG606N Changzhou Tianxiang textile instruments Co Ltd
Oxygen index instrument LZ6-6 Tianjin Yinbei technology development Co., Ltd
The specification and model of each raw material are as follows: EVA model 5110J, modified chloroprene rubber model CR1411 and foaming agent AC model DN 12.
Example 1
The flame-retardant foaming material comprises the following raw materials in parts by weight: 50 kg of EVA, 50 kg of chloroprene rubber, 4 kg of foaming agent AC, 1 kg of crosslinking agent DCP, 1.8 kg of zinc oxide, 0.8 kg of stearic acid, 12 kg of PVC and aerogel SO22.2 kg.
The preparation method comprises the following steps: (1) the raw materials except the cross-linking agent and the foaming agent are put into an internal mixer according to the mixture ratio for mixing, the mixing time is 10-15 minutes, and the first-step mixing is finished when the mixing temperature is raised to 115 ℃; (2) adding a cross-linking agent and a foaming agent according to the proportion, starting the second-step mixing, wherein the banburying time is 3-5 minutes, and finishing the second-step mixing when the banburying temperature is raised to 120 ℃; cleaning the foaming agent on the internal mixing chamber, continuously mixing for 2 minutes, and finishing the mixing process of the internal mixer; (3) refining the poured mixed material on an open mill, thinly passing for 3-5 times to prepare a pre-foamed material block, then placing the pre-foamed material block into a preheated flat vulcanizing machine mold, carrying out primary foaming for 35-40min at 135-155 ℃, and naturally cooling the primary foamed foam to prepare the foamed plate.
The main detection data are shown in table 1 below:
TABLE 1
Figure BDA0003004139370000031
Figure BDA0003004139370000041
Example 2
The flame-retardant foaming material comprises the following raw materials in parts by weight: 50 kg of EVA, 50 kg of chloroprene rubber, 3 kg of foaming agent AC, 1.2 kg of crosslinking agent DCP and 1 kg of zinc oxide5 kg stearic acid 1 kg PVC 10 kg aerogel SO23 kg.
The preparation method comprises the following steps: (1) the raw materials except the cross-linking agent and the foaming agent are put into an internal mixer according to the mixture ratio for mixing, the mixing time is 10-15 minutes, and the first-step mixing is finished when the mixing temperature is raised to 115 ℃; (2) adding a cross-linking agent and a foaming agent according to the proportion, starting the second-step mixing, wherein the banburying time is 3-5 minutes, and finishing the second-step mixing when the banburying temperature is raised to 120 ℃; cleaning the foaming agent on the internal mixing chamber, continuously mixing for 2 minutes, and finishing the mixing process of the internal mixer; (3) refining the poured mixed material on an open mill, thinly passing for 3-5 times to prepare a pre-foamed material block, then placing the pre-foamed material block into a preheated flat vulcanizing machine mold, carrying out primary foaming for 35-40min at 135-155 ℃, and naturally cooling the primary foamed foam to prepare the foamed plate.
The main assay data are shown in table 2 below:
TABLE 2
Figure BDA0003004139370000042
Figure BDA0003004139370000051
Example 3
The flame-retardant foaming material comprises the following raw materials in parts by weight: 50 kg of EVA, 50 kg of chloroprene rubber, 5 kg of foaming agent AC, 0.8 kg of crosslinking agent DCP, 2 kg of zinc oxide, 0.6 kg of stearic acid, 15 kg of PVC and aerogel SO22 kg.
The preparation method comprises the following steps: (1) the raw materials except the cross-linking agent and the foaming agent are put into an internal mixer according to the mixture ratio for mixing, the mixing time is 10-15 minutes, and the first-step mixing is finished when the mixing temperature is raised to 115 ℃; (2) adding a cross-linking agent and a foaming agent according to the proportion, starting the second-step mixing, wherein the banburying time is 3-5 minutes, and finishing the second-step mixing when the banburying temperature is raised to 120 ℃; cleaning the foaming agent on the internal mixing chamber, continuously mixing for 2 minutes, and finishing the mixing process of the internal mixer; (3) refining the poured mixed material on an open mill, thinly passing for 3-5 times to prepare a pre-foamed material block, then placing the pre-foamed material block into a preheated flat vulcanizing machine mold, carrying out primary foaming for 35-40min at 135-155 ℃, and naturally cooling the primary foamed foam to prepare the foamed plate.
The main assay data are shown in table 3 below:
TABLE 3
Figure BDA0003004139370000052
Figure BDA0003004139370000061

Claims (3)

1. A flame-retardant foam material is characterized in that: the raw materials consist of the following substances in parts by weight:
50 portions of EVA
50 portions of chloroprene rubber
3-5 parts of foaming agent AC
0.8 to 1.2 portions of cross-linking agent DCP
1.5-2 parts of zinc oxide
0.6-1 part of stearic acid
10-15 parts of PVC
Aerogel SiO22-3 parts.
2. The foamed material according to claim 1, characterized in that: the raw materials consist of the following substances in parts by weight:
50 portions of EVA
50 portions of chloroprene rubber
Foaming agent AC 4 parts
1 part of crosslinking agent DCP
1.8 parts of zinc oxide
Stearic acid 0.8 part
12 portions of PVC
Aerogel SiO22.2 parts.
3. A method for producing the foamed material according to claim 1, wherein: the method comprises the following steps: (1) the raw materials except the cross-linking agent and the foaming agent are put into an internal mixer according to the mixture ratio for mixing, and the first-step mixing is finished when the mixing temperature is raised to 115 ℃; (2) adding a cross-linking agent and a foaming agent according to the proportion, starting the second-step mixing, and finishing the second-step mixing when the banburying temperature is raised to 120 ℃; cleaning the foaming agent in the banburying chamber, continuously mixing to 125 ℃, and finishing the mixing process of the banburying machine; (3) refining the poured mixed body on an open mill, setting the open mill at 100-105 ℃, thinly passing for 3-5 times, rolling into a pre-foamed block with the size of 1000mm multiplied by 500mm, raising the temperature of a flat vulcanizing machine to 135-155 ℃ in advance, then placing the pre-foamed block into a flat vulcanizing machine mould for primary foaming for 35-40min, and naturally cooling the foamed body obtained by the primary foaming to obtain the foamed plate.
CN202110356618.1A 2021-04-01 2021-04-01 Flame-retardant foam material and preparation method thereof Pending CN113024938A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107118426A (en) * 2017-06-12 2017-09-01 江苏天有贸易有限公司 EVA/ rubber blends sole material formula and preparation method thereof
CN107722442A (en) * 2017-11-06 2018-02-23 福建嘉怡塑胶有限公司 A kind of EVA composition, foams and preparation method thereof
CN109438821A (en) * 2018-09-28 2019-03-08 陆芊芊 A kind of high thermal conductivity graphene modified EVA foamed material and preparation method thereof
CN111825901A (en) * 2019-04-15 2020-10-27 江苏泛亚微透科技股份有限公司 Silicon dioxide aerogel flexible elastic heat insulation composite material and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107118426A (en) * 2017-06-12 2017-09-01 江苏天有贸易有限公司 EVA/ rubber blends sole material formula and preparation method thereof
CN107722442A (en) * 2017-11-06 2018-02-23 福建嘉怡塑胶有限公司 A kind of EVA composition, foams and preparation method thereof
CN109438821A (en) * 2018-09-28 2019-03-08 陆芊芊 A kind of high thermal conductivity graphene modified EVA foamed material and preparation method thereof
CN111825901A (en) * 2019-04-15 2020-10-27 江苏泛亚微透科技股份有限公司 Silicon dioxide aerogel flexible elastic heat insulation composite material and preparation method thereof

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