CN108948476B - Halogen-free flame-retardant polyethylene material and preparation method thereof - Google Patents
Halogen-free flame-retardant polyethylene material and preparation method thereof Download PDFInfo
- Publication number
- CN108948476B CN108948476B CN201710367039.0A CN201710367039A CN108948476B CN 108948476 B CN108948476 B CN 108948476B CN 201710367039 A CN201710367039 A CN 201710367039A CN 108948476 B CN108948476 B CN 108948476B
- Authority
- CN
- China
- Prior art keywords
- parts
- weight
- halogen
- polyethylene
- free 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
- C08L23/06—Polyethene
-
- 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
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
-
- 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
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four 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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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)
Abstract
The invention belongs to the technical field of high polymer materials, and relates to a halogen-free flame-retardant polyethylene composite material which comprises the following raw materials in parts by weight: 35-45 parts of polyethylene resin, 10-20 parts of polypropylene resin, 35-40 parts of halogen-free flame retardant, 0.4-0.6 part of antioxidant, 0.5-1.0 part of lubricant, 2-5 parts of compatilizer and 3-5 parts of toughening agent. The invention also relates to a preparation method of the halogen-free flame-retardant polyethylene composite material. The preparation process is simple, and the obtained composite material has good flame retardance and mechanical property.
Description
Technical Field
The invention belongs to the technical field of high polymer materials, and relates to a halogen-free flame-retardant polyethylene material and a preparation method thereof.
Background
Polyethylene (PE) has excellent electrical insulation, chemical corrosion resistance and cold resistance, is nontoxic, light and low in price, is widely applied to industries such as daily packaging, construction, transportation, wires and cables, and is widely applied to the cable electrical industry which has high flame retardant requirement, but the PE has an oxygen index of 17.5 and belongs to flammable high polymer materials, so that the polyethylene materials applied to the electrical industry need to be subjected to flame retardant modification.
The early stage of PE flame retardance is a method of adding halogen series substances and antimony trioxide in a compounding manner, the method is high in flame retardance efficiency, but a large amount of smoke and toxic and corrosive gas can be released when the halogen series substance flame-retardant PE material is combusted, so that the environment is polluted, and the human body is injured. At present, the halogen-free flame retardant technology is greatly developed at home and abroad, namely, inorganic hydroxide is added, the flame retardant decomposes and absorbs heat and water generated by decomposition dilutes combustible substances to achieve the purpose of flame retardance, and the defect is that the addition amount is large and is generally more than 50 percent, so that the mechanical property and the processing property of the material are obviously reduced; or an intumescent flame retardant is added, the flame retardant is heated and decomposed to form a uniform intumescent carbon layer on the surface of the material, the flame retardant effect is achieved through heat insulation, oxygen isolation and other modes, the flame retardant efficiency is higher than that of hydroxide, and the flame retardant is widely applied at present.
The intumescent flame retardant is generally obtained by mixing an acid source (ammonium polyphosphate, melamine polyphosphate), a gas source (melamine) and a carbon source (pentaerythritol) in proportion, has high flame retardant efficiency, but has poor compatibility with PE, is easy to separate out, and has a white surface when being made into a colored product, thereby seriously affecting the application range of the flame retardant PE material.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a halogen-free flame-retardant polyethylene material, which has good flame retardance and avoids the condition that the surface is easily whitened when a color product is prepared due to poor compatibility of a flame retardant and PE.
The invention also aims to provide a preparation method of the halogen-free flame-retardant polyethylene material.
In order to achieve the purpose, the invention adopts the following technical scheme:
the halogen-free flame-retardant polyethylene composite material comprises the following raw materials in parts by weight:
the polyethylene resin is High Density Polyethylene (HDPE) with a melt index of 0.5-5g/10min (the test condition of the melt index is 190 ℃ and 2.16 Kg).
The polypropylene resin is copolymerized polypropylene.
The halogen-free flame retardant is a nitrogen-phosphorus intumescent flame retardant; preferably, the halogen-free flame retardant is a mixture of ammonium polyphosphate, melamine and pentaerythritol in a weight ratio of 3-5:1-5: 1-3.
The antioxidant consists of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester (antioxidant 1010) and tris [2, 4-di-tert-butylphenyl ] phosphite (antioxidant 168); preferably, the composition ratio of the tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester (antioxidant 1010) to the tri [2, 4-di-tert-butylphenyl ] phosphite (antioxidant 168) is 1:1-1: 2.
The lubricant is one or more of calcium stearate, polyethylene wax, Ethylene Bis Stearamide (EBS) and silicone.
The compatilizer is more than one of maleic anhydride grafted polypropylene (PP-G) and ethylene-vinyl acetate copolymer (EVA); preferably, the EVA has a vinyl acetate content of 15-25%.
The toughening agent is polyolefin elastomer (POE).
The raw materials for producing the polyethylene composite material also comprise toner; preferably, the toner is numbered as pigment red 226.
The invention also discloses a preparation method of the halogen-free flame-retardant polyethylene composite material, which comprises the following steps:
(1) uniformly mixing 35-45 parts by weight of polyethylene resin, 10-20 parts by weight of polypropylene resin, 35-40 parts by weight of halogen-free flame retardant, 0.4-0.6 part by weight of antioxidant, 0.5-1.0 part by weight of lubricant, 2-5 parts by weight of compatilizer, 3-5 parts by weight of toughening agent and 0-4 parts by weight of toner in a high-speed mixer to obtain a mixture;
(2) and (2) putting the mixture obtained in the step (1) into a double-screw extruder for melting and mixing, extruding, cooling, granulating and drying to obtain the halogen-free flame-retardant polyethylene composite material.
The rotating speed of the high mixing machine in the step (1) is 500-800rpm, and the mixing time is 3-10 min.
The temperature of each area of the double-screw extruder in the step (2) is 180-220 ℃.
Compared with the prior art, the invention has the following advantages:
(1) the polypropylene, the flame retardant and the lubricant silicone are added to the product, so that various functions of the product are supplemented and cooperated with each other, the condition that the surface is easily whitened when the product is prepared into a colored product due to poor compatibility of the flame retardant and the PE is avoided, the product has good surface performance and excellent toughness, and the application range of the product is widened.
(2) The product obtained by the invention achieves the same combustion grade by adding polypropylene under the condition of reducing the content of the flame retardant, and avoids the reduction of the mechanical property and the processability of the product caused by the increase of the addition amount of the flame retardant.
Detailed Description
The invention is further illustrated by the following examples,
the method for testing the performances of the following comparative examples and examples comprises the following steps:
tensile strength test method: ASTM D638-039;
the notch impact strength test method comprises the following steps: ASTM D256;
the flame retardant performance standard adopts: UL-94.
Example 1
(1) Uniformly mixing 35 parts by weight of high-density polyethylene resin, 20 parts by weight of copolymerized polypropylene resin, 35 parts by weight of halogen-free flame retardant (ammonium polyphosphate, melamine and pentaerythritol in a weight ratio of 4:2:2), 0.4 part by weight of antioxidant (tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester and tris [ 2.4-di-tert-butylphenyl ] phosphite in a weight ratio of 1:1), 0.2 part by weight of polyethylene wax, 0.3 part by weight of silicone, 5 parts by weight of PP-G and 5 parts by weight of POE in a high-speed mixer to obtain a mixture, wherein the rotating speed of the high-speed mixer is 500rpm, and the mixing time is 10 min;
(2) and (2) putting the mixture obtained in the step (1) into a double-screw extruder for melting and mixing, extruding, cooling, granulating and drying, wherein the temperature of each area of the double-screw extruder is 180-220 ℃, and then the halogen-free flame-retardant polyethylene composite material can be obtained. The resulting composite was tested and the properties are shown in Table 2.
Example 2
(1) Uniformly mixing 40 parts by weight of high-density polyethylene resin, 15 parts by weight of co-polypropylene resin, 37 parts by weight of halogen-free flame retardant (ammonium polyphosphate, melamine and pentaerythritol in a weight ratio of 5:3:2), 0.5 part by weight of antioxidant (tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester and tris [ 2.4-di-tert-butylphenyl ] phosphite in a weight ratio of 1:1), 0.3 part by weight of calcium stearate, 0.5 part by weight of silicone, 5 parts by weight of EVA (the content of vinyl acetate is 20%), 3 parts by weight of POE and 4 parts by weight of pigment red 226 in a high-speed mixer to obtain a mixture, wherein the rotation speed of the high-speed mixer is 500rpm, and the mixing time is 10 min;
(2) and (2) putting the mixture obtained in the step (1) into a double-screw extruder for melting and mixing, extruding, cooling, granulating and drying, wherein the temperature of each area of the double-screw extruder is 180-220 ℃, and then the halogen-free flame-retardant polyethylene composite material can be obtained. The resulting composite was tested and the properties are shown in Table 2.
Example 3
(1) Uniformly mixing 42 parts by weight of high-density polyethylene resin, 10 parts by weight of co-polypropylene resin, 38 parts by weight of halogen-free flame retardant (ammonium polyphosphate, melamine and pentaerythritol in a weight ratio of 3:1:3), 0.5 part by weight of antioxidant (tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester and tris [ 2.4-di-tert-butylphenyl ] phosphite in a weight ratio of 1:1), 0.5 part by weight of polyethylene wax, 0.5 part by weight of silicone, 5 parts by weight of PP-G, 5 parts by weight of POE and 1 part by weight of pigment red 226 in a high-speed mixer to obtain a mixture, wherein the rotating speed of the high-speed mixer is 700rpm, and the mixing time is 5 min;
(2) and (2) putting the mixture obtained in the step (1) into a double-screw extruder for melting and mixing, extruding, cooling, granulating and drying, wherein the temperature of each area of the double-screw extruder is 180-220 ℃, and then the halogen-free flame-retardant polyethylene composite material can be obtained. The resulting composite was tested and the properties are shown in Table 2.
Example 4
(1) Uniformly mixing 45 parts by weight of high-density polyethylene resin, 10 parts by weight of copolymerized polypropylene resin, 40 parts by weight of halogen-free flame retardant (ammonium polyphosphate, melamine and pentaerythritol in a weight ratio of 4:2:2), 0.6 part by weight of antioxidant (tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester and tris [ 2.4-di-tert-butylphenyl ] phosphite in a weight ratio of 1:2), 0.5 part by weight of polyethylene wax, 0.5 part by weight of silicone, 2 parts by weight of PP-G and 3 parts by weight of POE in a high-speed mixer to obtain a mixture, wherein the rotating speed of the high-speed mixer is 800rpm, and the mixing time is 3 min;
(2) and (2) putting the mixture obtained in the step (1) into a double-screw extruder for melting and mixing, extruding, cooling, granulating and drying, wherein the temperature of each area of the double-screw extruder is 180-220 ℃, and then the halogen-free flame-retardant polyethylene composite material can be obtained. The resulting composite was tested and the properties are shown in Table 2.
Comparative example 1
(1) Uniformly mixing 55 parts by weight of polyethylene resin, 40 parts by weight of halogen-free flame retardant (ammonium polyphosphate, melamine and pentaerythritol in a weight ratio of 4:2:2), 0.6 part by weight of antioxidant (tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester and tris [ 2.4-di-tert-butylphenyl ] phosphite in a weight ratio of 1:2), 0.5 part by weight of polyethylene wax, 0.5 part by weight of silicone and 5 parts by weight of POE in a high-speed mixer to obtain a mixture, wherein the rotating speed of the high-speed mixer is 800rpm, and the mixing time is 3 min;
(2) and (2) putting the mixture obtained in the step (1) into a double-screw extruder for melting and mixing, extruding, cooling, granulating and drying, wherein the temperature of each area of the double-screw extruder is 180-220 ℃, and then the halogen-free flame-retardant polyethylene composite material can be obtained. The resulting composite was tested and the properties are shown in Table 2.
Comparative example 2
1) Uniformly mixing 40 parts by weight of polyethylene resin, 15 parts by weight of polypropylene resin, 37 parts by weight of halogen-free flame retardant (ammonium polyphosphate, melamine and pentaerythritol in a weight ratio of 5:3:2), 0.5 part by weight of antioxidant (pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and tris [ 2.4-di-tert-butylphenyl ] phosphite in a weight ratio of 1:1), 0.3 part by weight of calcium stearate, 5 parts by weight of EVA (the content of vinyl acetate is 20%), and 3 parts by weight of POE (polyolefin elastomer) in a high-speed mixer to obtain a mixture, wherein the rotating speed of the high-speed mixer is 500rpm, and the mixing time is 10 min;
(2) and (2) putting the mixture obtained in the step (1) into a double-screw extruder for melting and mixing, extruding, cooling, granulating and drying, wherein the temperature of each area of the double-screw extruder is 180-220 ℃, and then the halogen-free flame-retardant polyethylene composite material can be obtained. The resulting composite was tested and the properties are shown in Table 2.
The parts by weight of each component of the above examples 1 to 4 and comparative examples 1 and 2 are shown in Table 1.
TABLE 1
| Raw material | Example 1 | Example 2 | Example 3 | Example 4 | Comparative example 1 | Comparative example 2 |
| HDPE | 35 | 40 | 42 | 45 | 55 | 40 |
| Polypropylene copolymer | 20 | 15 | 10 | 10 | / | 15 |
| Flame retardant | 35 | 37 | 38 | 40 | 40 | 37 |
| Antioxidant agent | 0.4 | 0.5 | 0.5 | 0.6 | 0.6 | 0.5 |
| Polyethylene wax | 0.2 | / | 0.5 | 0.5 | 0.5 | 0.5 |
| Calcium stearate | / | 0.3 | / | / | / | 0.3 |
| Silicone | 0.3 | 0.5 | 0.5 | 0.5 | 0.5 | / |
| PP-G | 5 | / | 5 | 2 | / | / |
| EVA | / | 5 | / | / | / | 5 |
| POE | 5 | 3 | 5 | 3 | 5 | 3 |
| Pigment Red 226 | / | 4 | 1 | / | / | / |
The results of mechanical property tests of the composite materials obtained in examples 1 to 4 and comparative examples 1 and 2 are shown in Table 2.
TABLE 2
| Performance of | Unit of | Example 1 | Example 2 | Example 3 | Example 4 | Comparative example 1 | Comparative example 2 |
| Tensile strength | MPa | 16.6 | 16.1 | 15.4 | 15.2 | 17.0 | 15.8 |
| Impact of notch | KJ/m2 | 13 | 12 | 15 | 12 | 10 | 12 |
| Flame retardant properties | / | V-0 | V-0 | V-0 | V-0 | V-0 | V-0 |
| Surface Properties | / | Superior food | Good wine | Good wine | Good wine | Severe white hair | Good wine |
From the test results of table 2, it can be derived: 1) the polypropylene is added, so that the surface performance of the material is improved, and the compatibility of the polypropylene and the intumescent flame retardant is better; 2) the addition of polypropylene can also achieve the same combustion grade under the condition of reducing the content of the flame retardant; 3) the addition of the polypropylene has little influence on the toughness of the material; 4) comparative example 2 differs from example 2 in that the lubricant used was polyethylene wax and silicone, respectively, and the two samples were heated in an oven at 100 ℃, and after a period of time, the surface of the sample without silicone appeared white sticky matter, and the surface of the silicone-coated article was still smooth, indicating that the lubricant silicone had a positive effect on preventing the precipitation of the flame retardant. The material can be used for products with high requirements on surfaces, and the application range of the expansion type flame-retardant PE is expanded.
The embodiments described above are presented to enable those skilled in the art to make and use the invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments described herein, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (8)
1. A halogen-free flame-retardant polyethylene composite material is characterized in that: the production raw materials comprise the following components in parts by weight:
35-45 parts of polyethylene resin,
10-20 parts of polypropylene resin,
35-40 parts of halogen-free flame retardant,
0.4 to 0.6 portion of antioxidant,
0.5 to 1.0 portion of lubricant,
2-5 parts of a compatilizer,
3-5 parts of a toughening agent;
the halogen-free flame retardant is a nitrogen-phosphorus intumescent flame retardant; the nitrogen-phosphorus intumescent flame retardant is a mixture of ammonium polyphosphate, melamine and pentaerythritol, and the weight ratio of the mixture is 3-5:1-5: 1-3;
the lubricant is a combination of calcium stearate and silicone or a combination of polyethylene wax and silicone;
the raw materials for producing the polyethylene composite material also comprise 0-4 parts by weight of toner;
the antioxidant consists of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester and tri [2, 4-di-tert-butylphenyl ] phosphite ester; the composition ratio of the tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester to the tri [2, 4-di-tert-butylphenyl ] phosphite is 1:1-1: 2;
the compatilizer is more than one of maleic anhydride grafted polypropylene and ethylene-vinyl acetate copolymer; the vinyl acetate content of the ethylene-vinyl acetate copolymer is 15-25%.
2. The polyethylene composite according to claim 1, characterized in that: the polyethylene resin is high-density polyethylene.
3. The polyethylene composite according to claim 1, characterized in that: the polypropylene resin is copolymerized polypropylene.
4. The polyethylene composite according to claim 1, characterized in that: the toughening agent is a polyolefin elastomer.
5. The polyethylene composite according to claim 1, characterized in that: the toner is numbered pigment red 226.
6. The preparation method of the halogen-free flame-retardant polyethylene composite material of claim 1, which is characterized in that: the method comprises the following steps:
(1) uniformly mixing 35-45 parts by weight of polyethylene resin, 10-20 parts by weight of polypropylene resin, 35-40 parts by weight of halogen-free flame retardant, 0.4-0.6 part by weight of antioxidant, 0.5-1.0 part by weight of lubricant, 2-5 parts by weight of compatilizer and 3-5 parts by weight of toughening agent in a high-speed mixer to obtain a mixture;
(2) and (2) melting and mixing the mixture obtained in the step (1) in a double-screw extruder, extruding, cooling, granulating and drying to obtain the halogen-free flame-retardant polyethylene composite material.
7. The method for preparing a composite material according to claim 6, characterized in that: the rotating speed of the high-speed mixer in the step (1) is 500-800rpm, and the mixing time is 3-10 min.
8. The method for preparing a composite material according to claim 6, characterized in that: the temperature of each zone of the double-screw extruder in the step (2) is 180-220 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710367039.0A CN108948476B (en) | 2017-05-23 | 2017-05-23 | Halogen-free flame-retardant polyethylene material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710367039.0A CN108948476B (en) | 2017-05-23 | 2017-05-23 | Halogen-free flame-retardant polyethylene material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108948476A CN108948476A (en) | 2018-12-07 |
| CN108948476B true CN108948476B (en) | 2021-07-27 |
Family
ID=64462655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710367039.0A Active CN108948476B (en) | 2017-05-23 | 2017-05-23 | Halogen-free flame-retardant polyethylene material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108948476B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109705462B (en) * | 2018-12-25 | 2021-08-24 | 广东聚石化学股份有限公司 | V0-grade halogen-free flame-retardant polypropylene material special for extrusion and plastic uptake and preparation method thereof |
| CN110079008A (en) * | 2019-01-21 | 2019-08-02 | 池州市锐强新材料有限公司 | A kind of halogen-free intumescent flame-retardant special breathable membrane material and preparation method thereof |
| CN112300465A (en) * | 2019-07-24 | 2021-02-02 | 中国石油天然气股份有限公司 | Polyethylene resin composition |
| CN112143082A (en) * | 2020-10-10 | 2020-12-29 | 刘小龙 | High-strength flame-retardant PE material and preparation method thereof |
| CN112646257A (en) * | 2020-12-29 | 2021-04-13 | 无锡鸿仪新材料科技有限公司 | High-density polyethylene sheath material and preparation process thereof |
| CN114957826A (en) * | 2021-02-26 | 2022-08-30 | 合肥杰事杰新材料股份有限公司 | Extrusion-grade halogen-free flame-retardant wood-plastic composite material and preparation method and application thereof |
| CN113462052A (en) * | 2021-06-08 | 2021-10-01 | 太仓市华旭塑胶科技有限公司 | Flame-retardant garbage can made of composite polymer material and preparation method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103172923A (en) * | 2013-04-11 | 2013-06-26 | 江苏德威新材料股份有限公司 | High-temperature-resistant thermoplastic flame retardant material for automotive wire and preparation method thereof |
| CN103849068A (en) * | 2012-12-04 | 2014-06-11 | 青岛三利中德美水设备有限公司 | Glass fiber-reinforced halogen-free flame retardant PP(Polypropylene)/PE(Polyethylene) alloy material and preparation method thereof |
| CN103881190A (en) * | 2012-12-21 | 2014-06-25 | 青岛欣展塑胶有限公司 | Halogen-free flame-retardant polyethylene material and preparation method thereof |
-
2017
- 2017-05-23 CN CN201710367039.0A patent/CN108948476B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103849068A (en) * | 2012-12-04 | 2014-06-11 | 青岛三利中德美水设备有限公司 | Glass fiber-reinforced halogen-free flame retardant PP(Polypropylene)/PE(Polyethylene) alloy material and preparation method thereof |
| CN103881190A (en) * | 2012-12-21 | 2014-06-25 | 青岛欣展塑胶有限公司 | Halogen-free flame-retardant polyethylene material and preparation method thereof |
| CN103172923A (en) * | 2013-04-11 | 2013-06-26 | 江苏德威新材料股份有限公司 | High-temperature-resistant thermoplastic flame retardant material for automotive wire and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108948476A (en) | 2018-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108948476B (en) | Halogen-free flame-retardant polyethylene material and preparation method thereof | |
| CN108017826B (en) | Flame-retardant polyethylene sheath material and preparation method thereof | |
| CN101817952B (en) | Soft low-smoke halogen-free flame-retardant polyolefin cable material and preparation method thereof | |
| CN103435887B (en) | A kind of high workability halide-free fireproof composite polyolefine material and preparation method thereof | |
| CN109627568B (en) | Polyolefin cable sheath material and preparation method thereof | |
| CN112250935A (en) | High-flame-retardant-grade low-smoke halogen-free material and preparation method and application thereof | |
| CN100374497C (en) | Smokeless and halogen-free expanding fire-retardant electric wire materials with thermoplastic elastomer and production thereof | |
| CN110684344B (en) | Halogen-free flame-retardant nylon composite material and preparation method and application thereof | |
| CN110903535A (en) | Low-smoke halogen-free flame-retardant sheath material with good cold resistance for cable and preparation method thereof | |
| CN105482240B (en) | Preparation method of halogen-free flame-retardant linear low-density polyethylene material | |
| CN100363415C (en) | Low smoke non-halogen fire retarding expansive polyolefins electronic wire material and preparation process thereof | |
| CN101812202A (en) | Halogen-free low-smoke flame-retardant polypropylene/polyamide composite material and preparation method | |
| CN107722450A (en) | A kind of fire-retardant PP compositions of LFT D special efficients | |
| CN110591350A (en) | Smoke-inhibiting polyamide composition and preparation method thereof | |
| CN103450549A (en) | Expansive type halogen-free flame-retardant cable material | |
| CN106995559A (en) | UL94 5VA grades a kind of high GWIT RPPs composition and preparation method thereof | |
| CN115991925A (en) | Cross-linked halogen-free flame-retardant TPE material and preparation method thereof | |
| CN114806164A (en) | Halogen-free flame-retardant PA66 and preparation method thereof | |
| CN104945876A (en) | Low-smoke density PC/ABS polymer composite and preparation method thereof | |
| CN112812416A (en) | Semi-hard halogen-free red phosphorus-free flame-retardant heat-shrinkable tubing and preparation method thereof | |
| CN111592711B (en) | Efficient halogen-free flame-retardant EVA material for heat-shrinkable tube and preparation method thereof | |
| CN103601968A (en) | Halogen-free flame-retardant polypropylene composite material used for making high-melt-strength sheets, and preparation method thereof | |
| CN113881216B (en) | Wear-resistant flame-retardant modified polyurethane cable material and preparation method thereof | |
| CN106987117B (en) | A kind of compounding phosphorus nitrogen system Flameproof polyamide and preparation method thereof | |
| CN114133691A (en) | Halogen-free flame-retardant antibacterial ABS material and preparation method thereof |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |