CN107090120B - ATH graphene synergistic flame-retardant EVA and preparation method thereof - Google Patents
ATH graphene synergistic flame-retardant EVA and preparation method thereof Download PDFInfo
- Publication number
- CN107090120B CN107090120B CN201710474420.7A CN201710474420A CN107090120B CN 107090120 B CN107090120 B CN 107090120B CN 201710474420 A CN201710474420 A CN 201710474420A CN 107090120 B CN107090120 B CN 107090120B
- Authority
- CN
- China
- Prior art keywords
- graphene
- retardant
- ath
- eva
- flame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Carbon And Carbon Compounds (AREA)
- Fireproofing Substances (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention belongs to the field of flame-retardant EVA materials, and particularly relates to an ATH/graphene synergistic flame-retardant EVA material and a preparation method thereof. The flame retardant material is composed of EVA resin, maleic anhydride grafted EVA, modified aluminum hydroxide, functionalized graphene, an antioxidant, a plasticizer and a cross-linking agent. The ATH/graphene synergistic flame-retardant EVA material disclosed by the invention is reasonable in formula, small in addition amount of the metal hydroxide flame retardant, good in dispersity, good in flame-retardant property and high in oxygen index, the UL-94 combustion grade can reach V-0, the mechanical property of the material is good, the preparation method is simple and convenient, easy to realize and low in operation cost, the related raw materials are easy to obtain and process, and the material is suitable for large-scale production in industry.
Description
Technical Field
The invention belongs to the field of flame-retardant EVA materials, and particularly relates to an ATH/graphene synergistic flame-retardant EVA material and a preparation method thereof.
Background
Ethylene-vinyl acetate copolymer (EVA) has high flexibility, impact resistance, good intermiscibility with filler and good heat sealing performance, and is widely applied to the fields of wires and cables, packaging films, hot melt adhesives, toys and the like. However, EVA is a flammable material, is easy to cause fire in the using process, and has great threat to the property and personal safety of people, thereby limiting the application field of the EVA. In order to improve the flame retardant property of EVA, adding a flame retardant into EVA is a common flame retardant mode. Although the traditional halogen flame retardant can bring good flame retardant performance to materials, a large amount of smoke and toxic and corrosive hydrogen halide gas are generated in the combustion process, and the traditional halogen flame retardant does not meet the requirement of environment-friendly development and is forbidden to be used. The expansion flame-retardant system can provide good flame-retardant performance for the material, but the problems of poor compatibility with the polymer, easy agglomeration, poor water resistance, serious reduction of the physical and mechanical properties of the material and the like are not effectively solved, so that the wide application of the material is limited. The metal hydroxide is non-volatile, does not generate toxic and harmful gases, is considered to be the flame retardant with the most development prospect, and is favored by people. However, when the metal hydroxide is used for flame-retardant polyolefin, the flame-retardant property is required to reach a certain level, and the addition amount is usually over 60 percent, so that the processing property and the mechanical property of the composite material are seriously influenced by the large addition amount. The search for a proper flame retardant synergist to generate a synergistic effect with metal hydroxide so as to improve the flame retardant efficiency and reduce the addition amount so as to improve the processing performance and the mechanical property of the composite material is the current popular research direction.
The graphene is formed by carbon atoms sp2The hybrid orbitals constitute a new carbon material with hexagonal honeycomb lattices, which has raised the hot trend of research due to its excellent properties. The application research result of the graphene in the flame retardant aspect preliminarily shows that compared with other flame retardants, the graphene has relatively good flame retardant performance only by a small amount.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an ATH/graphene synergistic flame-retardant EVA material with less addition of a metal hydroxide flame retardant, good dispersibility, excellent flame retardance and excellent mechanical properties and a preparation method thereof.
An ATH/graphene synergistic flame-retardant EVA material comprises the following components in parts by weight:
specifically, the VA content in the EVA resin is 10-35%.
Specifically, the grafting ratio of the maleic anhydride grafted EVA is 1.5%. High grafting rate EVA-g-MAH from Exxon Mobil, USA can be selected; of course, the preparation can also be carried out by the existing method.
Specifically, the modified aluminum hydroxide is prepared by the following method: drying aluminum hydroxide at 100-110 ℃ for 5-10h, and then adding distilled water to obtain a material, wherein the mass ratio of the aluminum hydroxide to the distilled water is (4-3): (2-1); then putting the materials into a constant-temperature water bath kettle, heating to 40-50 ℃, and stirring at constant temperature, wherein the stirring speed is 4500-5500 r/min; then adding titanate coupling agent, stirring continuously for 1-3h at 4000-4500r/min, wherein the adding amount of the titanate coupling agent is 5-10% of the mass of the aluminum hydroxide, emulsifying, performing suction filtration, drying at 100-110 ℃ for 3-5h, grinding and sieving to obtain the modified aluminum hydroxide.
Specifically, the particle size of the modified aluminum hydroxide is 1-5 um.
Specifically, the functionalized graphene is prepared by the following method: (1) placing graphene carbon in a mixed acid solution of concentrated sulfuric acid and concentrated nitric acid with a volume ratio of 3:1, treating for 24 hours under ultrasonic oscillation and mechanical stirring, then washing with a large amount of deionized water to be neutral, oxidizing with a potassium permanganate solution for 12 hours, then washing with a large amount of deionized water to be neutral, and vacuum-drying at 80 ℃ for 24-36 hours; (2) taking the dried product in the step (1), adding a proper amount of dioxane, performing ultrasonic treatment for 1-2h, then stirring for 1-2h under the condition of nitrogen protection and ice water bath, wherein the stirring speed is 300-500r/min, and then adding the mixture in a mass ratio (5-1) to graphene: 1 of 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), stirring and dissolving, then adding a silane coupling agent KH-550 accounting for 5-10% of the mass of the graphene, stirring for 3-5h, wherein the stirring speed is 500-550 r/min; (3) and after the reaction is finished, centrifuging to remove reaction liquid, washing for 3-5 times by using tetrahydrofuran, centrifuging, and drying the centrifuged product in vacuum at 60 ℃ for 24-36h to obtain the functionalized graphene.
Specifically, the antioxidant is a compound of a hindered phenol antioxidant 1010 and a phosphite antioxidant 168 according to a mass ratio of (1-3) to (3-1).
Specifically, the plasticizer is one of epoxidized soybean oil, dioctyl terephthalate and dibutyl phthalate.
Specifically, the cross-linking agent is one of dicumyl peroxide and benzoyl peroxide.
Further, the preparation method of the ATH/graphene synergistic flame-retardant EVA material specifically comprises the following steps:
(1) putting EVA resin, maleic anhydride grafted EVA, modified aluminum hydroxide, functionalized graphene, an antioxidant and a plasticizer into an internal mixer according to parts by weight, mixing for 10-20min at the mixing temperature of 100-120 ℃ and the rotation speed of 50-100 r/min;
(2) adding a cross-linking agent into the material mixed in the step (1) and continuously mixing, wherein the mixing time is 20-30min, the mixing temperature is 110-115 ℃, and the rotating speed is 50-120 r/min;
(3) and (3) pouring the mixed material obtained in the step (2) into a granulator for granulation to obtain the ATH/graphene synergistic flame-retardant EVA material.
The invention has the following beneficial effects:
(1) according to the ATH/graphene synergistic flame-retardant EVA material, the maleic anhydride grafted EVA resin with a high grafting rate of 1.5% is selected, so that the material has excellent viscosity, and the compatibility of each material in the EVA resin can be increased; after the surface of the aluminum hydroxide is modified, the water absorption and oil absorption values of the aluminum hydroxide are reduced, the dispersibility and the thermal decomposition are improved, the aluminum hydroxide is blended and modified with a titanate coupling agent to obtain modified aluminum hydroxide powder with the particle size of 1-5um, the modified aluminum hydroxide powder is not agglomerated in resin through good synergistic effect with maleic anhydride grafted EVA resin, the dispersibility of the aluminum hydroxide powder is improved, the mechanical property is greatly improved, the apparent property is obviously enhanced, and the flame retardant property of the aluminum hydroxide is effectively improved.
(2) According to the ATH/graphene synergistic flame-retardant EVA material, the surface of the modified graphene contains a large number of active groups, so that the interface bonding force of a system is improved, and the bonding strength of the system is enhanced; the addition of the DOPD modified graphene is beneficial to improving the dispersibility of the modified aluminum hydroxide in the EVA resin and reducing the addition of aluminum hydroxide powder; meanwhile, under the synergistic effect of the modified graphene, the crosslinking density and softening layer of the EVA composite material after primary degradation are further improved, and an inorganic carbonization layer can be generated during material combustion to form an oxygen barrier film, so that combustion is inhibited, and the oxygen index of the flame-retardant system is greatly improved.
(3) The ATH/graphene synergistic flame-retardant EVA material disclosed by the invention is reasonable in formula, good in flame-retardant property and mechanical property, simple and convenient in preparation method, easy to realize and low in operation cost, and related raw materials are easily available and easy to process, so that the ATH/graphene synergistic flame-retardant EVA material is suitable for large-scale production in industry.
Detailed Description
The present invention will now be described in further detail with reference to examples.
Example 1
An ATH/graphene synergistic flame-retardant EVA material comprises the following components in parts by weight:
the VA content in the EVA resin is 25%.
The grafting rate of the maleic anhydride grafted EVA is 1.5%.
The modified aluminum hydroxide is prepared by the following method: drying aluminum hydroxide at 110 ℃ for 5-10h, and then adding distilled water to obtain a material, wherein the mass ratio of the aluminum hydroxide to the distilled water is 3: 2; then putting the materials into a constant-temperature water bath kettle, heating to 50 ℃, and stirring at constant temperature, wherein the stirring speed is 4500 r/min; and then adding a titanate coupling agent, continuously stirring for 2 hours at 4000r/min, wherein the adding amount of the titanate coupling agent is 10 percent of the mass of the aluminum hydroxide, emulsifying, performing suction filtration, drying for 5 hours at 110 ℃, and grinding and sieving to obtain the modified aluminum hydroxide with the particle size of 1 um.
The functionalized graphene is prepared by the following method: (1) placing graphene carbon in a mixed acid solution of concentrated sulfuric acid and concentrated nitric acid with a volume ratio of 3:1, treating for 24 hours under ultrasonic oscillation and mechanical stirring, then washing with a large amount of deionized water to be neutral, oxidizing with a potassium permanganate solution for 12 hours, then washing with a large amount of deionized water to be neutral, and vacuum-drying at 80 ℃ for 36 hours; (2) taking the dried product in the step (1), adding a proper amount of dioxane, performing ultrasonic treatment for 2 hours, then performing nitrogen protection, stirring for 2 hours under the ice-water bath condition, wherein the stirring speed is 300r/min, and then adding a solvent which is mixed with graphene in a mass ratio of 3:1, stirring and dissolving 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, adding a silane coupling agent KH-550 accounting for 10% of the mass of the graphene, and stirring for 3 hours at the stirring speed of 550 r/min; (3) and after the reaction is finished, centrifuging to remove the reaction liquid, washing for 4 times by using tetrahydrofuran, centrifuging, and drying the centrifuged product in vacuum at 60 ℃ for 24 hours to obtain the functionalized graphene.
The antioxidant is a compound of hindered phenol antioxidant 1010 and phosphite antioxidant 168 in a mass ratio of 1: 3.
A preparation method of an ATH/graphene synergistic flame-retardant EVA material specifically comprises the following steps:
(1) putting EVA resin, maleic anhydride grafted EVA, modified aluminum hydroxide, functionalized graphene, an antioxidant and a plasticizer into an internal mixer according to parts by weight, mixing for 10min at the mixing temperature of 120 ℃ and the rotation speed of 50 r/min;
(2) adding a cross-linking agent into the material mixed in the step (1) and continuously mixing, wherein the mixing time is 30min, the mixing temperature is 110 ℃, and the rotating speed is 120 r/min;
(3) and (3) pouring the mixed material obtained in the step (2) into a granulator for granulation to obtain the ATH/graphene synergistic flame-retardant EVA material.
Examples 2-6 are shown in Table 1, and comparative examples 1-5 are substantially the same as example 1 except for the differences shown in Table 2.
TABLE 1
TABLE 2
Performance testing is shown in Table 3
TABLE 3
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. An ATH/graphene synergistic flame-retardant EVA material is characterized in that: the flame retardant material comprises the following components in parts by weight:
the mass ratio of the EVA resin to the modified aluminum hydroxide is 1.25-1.29: 1;
the modified aluminum hydroxide is prepared by the following method: drying aluminum hydroxide at 100-110 ℃ for 5-10h, and then adding distilled water to obtain a material, wherein the mass ratio of the aluminum hydroxide to the distilled water is (4-3): (2-1); then putting the materials into a constant-temperature water bath kettle, heating to 40-50 ℃, and stirring at constant temperature, wherein the stirring speed is 4500-5500 r/min; then adding titanate coupling agent, stirring continuously for 1-3h at 4000-4500r/min, wherein the adding amount of the titanate coupling agent is 5-10% of the mass of the aluminum hydroxide, emulsifying, performing suction filtration, drying at 100-110 ℃ for 3-5h, grinding and sieving to obtain modified aluminum hydroxide;
the grafting rate of the maleic anhydride grafted EVA is 1.5%;
the particle size of the modified aluminum hydroxide is 1-5 um.
2. The ATH/graphene synergistic flame-retardant EVA material of claim 1, which is characterized in that: the VA content in the EVA resin is 10-35%.
3. The ATH/graphene synergistic flame-retardant EVA material of claim 1, which is characterized in that: the functionalized graphene is prepared by the following method: (1) placing graphene carbon in a mixed acid solution of concentrated sulfuric acid and concentrated nitric acid with a volume ratio of 3:1, treating for 24 hours under ultrasonic oscillation and mechanical stirring, then washing with a large amount of deionized water to be neutral, oxidizing with a potassium permanganate solution for 12 hours, then washing with a large amount of deionized water to be neutral, and vacuum-drying at 80 ℃ for 24-36 hours; (2) taking the dried product in the step (1), adding a proper amount of dioxane, performing ultrasonic treatment for 1-2h, then stirring for 1-2h under the condition of nitrogen protection and ice water bath, wherein the stirring speed is 300-500r/min, and then adding the mixture in a mass ratio (5-1) to graphene: 1, stirring and dissolving 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, adding a silane coupling agent KH-550 accounting for 5-10% of the mass of the graphene, and stirring for 3-5h at the stirring speed of 500-550 r/min; (3) and after the reaction is finished, centrifuging to remove reaction liquid, washing for 3-5 times by using tetrahydrofuran, centrifuging, and drying the centrifuged product in vacuum at 60 ℃ for 24-36h to obtain the functionalized graphene.
4. The ATH/graphene synergistic flame-retardant EVA material of claim 1, which is characterized in that: the antioxidant is a compound of hindered phenol antioxidant 1010 and phosphite antioxidant 168 according to the mass ratio of (1-3) to (3-1).
5. The ATH/graphene synergistic flame-retardant EVA material of claim 1, which is characterized in that: the plasticizer is one of epoxidized soybean oil, dioctyl terephthalate and dibutyl phthalate.
6. The ATH/graphene synergistic flame-retardant EVA material of claim 1, which is characterized in that: the cross-linking agent is dicumyl peroxide or benzoyl peroxide.
7. A method for preparing the ATH/graphene synergistic flame-retardant EVA material of any one of claims 1-6, which is characterized in that: the method specifically comprises the following steps:
(1) putting EVA resin, maleic anhydride grafted EVA, modified aluminum hydroxide, functionalized graphene, an antioxidant and a plasticizer into an internal mixer according to parts by weight, mixing for 10-20min at the mixing temperature of 100-120 ℃ and the rotation speed of 50-100 r/min;
(2) adding a cross-linking agent into the material mixed in the step (1) and continuously mixing, wherein the mixing time is 20-30min, the mixing temperature is 110-115 ℃, and the rotating speed is 50-120 r/min;
(3) and (3) pouring the mixed material obtained in the step (2) into a granulator for granulation to obtain the ATH/graphene synergistic flame-retardant EVA material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710474420.7A CN107090120B (en) | 2017-06-21 | 2017-06-21 | ATH graphene synergistic flame-retardant EVA and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710474420.7A CN107090120B (en) | 2017-06-21 | 2017-06-21 | ATH graphene synergistic flame-retardant EVA and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107090120A CN107090120A (en) | 2017-08-25 |
| CN107090120B true CN107090120B (en) | 2021-02-05 |
Family
ID=59639676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710474420.7A Active CN107090120B (en) | 2017-06-21 | 2017-06-21 | ATH graphene synergistic flame-retardant EVA and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107090120B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108975761A (en) * | 2018-07-20 | 2018-12-11 | 浙江农林大学 | A kind of manufacturing process of high flame retardant charcoal mould plate |
| CN109517219A (en) * | 2018-11-09 | 2019-03-26 | 安徽江淮汽车集团股份有限公司 | A kind of composite flame-retardant agent and preparation method thereof |
| CN109734990A (en) * | 2018-12-28 | 2019-05-10 | 北京理工大学 | Two-dimensional material nano modification flame-proof ethylene-vinyl acetate copolymer method |
| CN112143032B (en) * | 2019-06-28 | 2023-09-15 | 合肥杰事杰新材料股份有限公司 | Modified aluminum hydroxide, flame-retardant polyvinyl chloride material and preparation method thereof |
| CN110317389A (en) * | 2019-08-10 | 2019-10-11 | 衡水中铁建土工材料制造有限公司 | A kind of composite flame-proof anchor bar of waterproof plate in tunnels |
| CN111234537B (en) * | 2020-02-24 | 2021-09-24 | 哈尔滨理工大学 | Graphene anti-dripping flame-retardant synergist and preparation method thereof |
| CN115489171B (en) * | 2022-08-26 | 2024-04-09 | 柔怡美(福建)实业有限公司 | Super-soft creep-resistant elastic composite material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104098816A (en) * | 2013-04-09 | 2014-10-15 | 合肥杰事杰新材料股份有限公司 | Polyolefin/graphene nanocomposite and preparation method thereof |
| CN106279955A (en) * | 2016-08-18 | 2017-01-04 | 江苏上上电缆集团有限公司 | A kind of high-flame-retardance low-smoke halogen-free cable material of graphene-containing and preparation method thereof |
-
2017
- 2017-06-21 CN CN201710474420.7A patent/CN107090120B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104098816A (en) * | 2013-04-09 | 2014-10-15 | 合肥杰事杰新材料股份有限公司 | Polyolefin/graphene nanocomposite and preparation method thereof |
| CN106279955A (en) * | 2016-08-18 | 2017-01-04 | 江苏上上电缆集团有限公司 | A kind of high-flame-retardance low-smoke halogen-free cable material of graphene-containing and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107090120A (en) | 2017-08-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107090120B (en) | ATH graphene synergistic flame-retardant EVA and preparation method thereof | |
| CN103435887B (en) | A kind of high workability halide-free fireproof composite polyolefine material and preparation method thereof | |
| CN109897273B (en) | Composite flame retardant graft-modified EVA (ethylene-vinyl acetate) foam material and preparation method thereof | |
| CN107245182A (en) | A kind of APP/graphene cooperative flame retardant EVA expanded materials and preparation method thereof | |
| CN114409997B (en) | High-flame-retardance photoelectric composite cable sheath material with good processability and preparation method thereof | |
| CN105885188A (en) | Preparation and using method of chemical crosslinking low-smoke halogen-free flame-retardant polyolefin composite material | |
| CN111732782A (en) | High-oil-resistance irradiation crosslinking low-smoke halogen-free flame-retardant polyolefin cable material | |
| CN113603970A (en) | Synergistic flame-retardant polypropylene composite material and preparation method thereof | |
| CN110655707A (en) | Novel low-smoke halogen-free flame-retardant cable material | |
| CN110698772A (en) | Modified ammonium polyphosphate/modified graphene oxide flame-retardant runway particle material | |
| CN104262875B (en) | Intumescent flame-retardant cable material taking plant-based active carbon as synergist and preparation method thereof | |
| CN108795048A (en) | A kind of new-energy automobile electric wire and cable material and preparation method thereof | |
| CN110540707B (en) | Multi-element flame-retardant polypropylene material and preparation method thereof | |
| CN111793314A (en) | Irradiation crosslinking low-smoke halogen-free flame-retardant fire-resistant insulated wire | |
| CN101974290A (en) | Transparent flame-retardant organic silicon coating solution and preparation method thereof | |
| CN115710392B (en) | PE film for high-barrier high-strength degradable multifunctional bag | |
| CN106496741A (en) | A kind of antifouling work supertension insulant | |
| CN106479035B (en) | Flame-retardant impact-resistant polypropylene composite material and preparation method thereof | |
| CN109897357B (en) | High-stability halogen-free environment-friendly flame retardant for plastics and preparation method thereof | |
| CN113185796A (en) | 125 ℃ halogen-free flame-retardant cable material capable of self-crosslinking at room temperature and preparation method thereof | |
| CN112920564A (en) | Layered flame-retardant material and preparation method thereof | |
| CN107629288B (en) | Polyethylene/metal hydroxide/ketjen black flame-retardant material and preparation method thereof | |
| TWI686464B (en) | Flame-retardant composite and its method | |
| CN111438836A (en) | Preparation process of low-smoke halogen-free flame-retardant PVC cable sheath material | |
| CN115477827B (en) | Preparation method and application of phosphorus-nitrogen-silicon composite intumescent flame retardant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210121 Address after: 213000 33 Gehu Middle Road, HUTANG Town, Wujin District, Changzhou City, Jiangsu Province Applicant after: CHANGZHOU VOCATIONAL INSTITUTE OF ENGINEERING Address before: Changzhou carbon new material technology Co., Ltd., No.2, Tenglong Road, West Taihu science and Technology Industrial Park, Changzhou City, Jiangsu Province 213159 Applicant before: CHANGCHANG TANRUN NEW MATERIAL Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220809 Address after: No. 1 Ganghua Road, Sanjiaotan Village, Houchang, Jingang Town, Zhangjiagang City, Suzhou City, Jiangsu Province 215631 Patentee after: Zhangjiagang Keyuan polymer material Co.,Ltd. Address before: 213000 33 Gehu Middle Road, HUTANG Town, Wujin District, Changzhou City, Jiangsu Province Patentee before: CHANGZHOU VOCATIONAL INSTITUTE OF ENGINEERING |