CN102786740A - A-level fire-protection energy-saving rubber-plastic compound building insulation material and preparation method thereof - Google Patents
A-level fire-protection energy-saving rubber-plastic compound building insulation material and preparation method thereof Download PDFInfo
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- CN102786740A CN102786740A CN2012102647799A CN201210264779A CN102786740A CN 102786740 A CN102786740 A CN 102786740A CN 2012102647799 A CN2012102647799 A CN 2012102647799A CN 201210264779 A CN201210264779 A CN 201210264779A CN 102786740 A CN102786740 A CN 102786740A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/397—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using a single screw
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Abstract
A preparation method for A-level fire-protection energy-saving rubber-plastic thermal-insulating compound foam comprises the following steps: adding polypropylene powder resin, methyl vinyl base silicone rubber, ceramic powder, a fire retardant, glass fiber powder, an antioxidant, white carbon black and polyethylene wax in a high-speed mixer for kneading at a normal temperature, discharging the kneaded materials to an internal mixer so as to obtain material groups through internal mixing, discharging the material groups to a single-screw extrusion pelletizer so as to obtain a basic material A through melting, plasticizing and granulation; adding low-density polyethylene resin in a high mixing machine, then adding an AC blowing agent, talc powder, a lubricating agent and zinc stearate for kneading at the normal temperature, and then discharging the kneaded materials into a single-screw extruder so as to obtain a foaming masterbatch B through granulation; adding the basic material A, the foaming masterbatch B and the polyethylene wax into the high-speed mixer for kneading at the normal temperature, and then discharging the kneaded materials into the single-screw extruder so as to obtain sheets through extruding; carrying out irradiation crosslinking and foaming; grooving on the surface of the prepared foam; and embedding fire-protection filler in the grooves of the foam, immersing in a fire retardant solution and baking so as to obtain the compound building foam.
Description
Technical field
The present invention relates to a kind of preparation method of A level fire prevention energy-saving heat preserving rubber and plastic complex building foam.Through adopting the special formula system; Production technique makes the product combustionproperty reach the A level; Possess higher heat preservation and insulation, thermal conductivity less than 0.02
.What the present invention prepared is a kind of organic polymer composite foam material, is mainly used in the outer heat insulating work of external wall.
Background technology
The residential housing energy consumption has accounted for 32% of national energy consumption at present.The nearly 40,000,000,000 square metres building of China is the highly energy-consuming building basically, and the unit surface heating energy consumption is equivalent to 2-3 times of the close developed country of weather condition.The annual new building of China is nearly 2,000,000,000 square metres at present, surpasses the summation of all developed country's construction amounts, but is still the high energy consumption building more than 95%.Prediction is promptly arrived the year two thousand twenty 10 years of future, and China also will build up about 30,000,000,000 square metres of buildings.If or else take conservation measures, do not carry out energy-saving building materials, the year two thousand twenty building energy consumption will reach 1,100,000,000 tons of standard coal equivalents, be equivalent to build at present three times of institute's consumes energy.Know that therefrom building energy conservation is imperative, country has issued relevant laws and regulations and policy at present.
Building thermal insulation material mainly contains mineral-type and organic class at present, and inorganic heat insulation material is a kind of heat insulating energy saving material that is used for external rendering in the buildings, and free glass bead is mainly arranged; Pearlstone; Closed perlite, rock wool, foamed concrete etc.; Have antifreeze, the ageing-resistant and cheap characteristics such as price of fire prevention, but the insulation poor thermal efficiency.Organic insulation material mainly is an expanded plastic; Main products is polystyrene foamed plastics, phenolic aldehyde foam and urethane foam; Main drawback is inflammable, easy drip melt, and combustion fumes is big, toxicity is big, and ignition energy produces prussic acid gas; In case presence of fire is very big to the human body toxic, and shortcoming such as heat insulation effect is bad.Prove that through experimental study the fire resistance of organic materials is difficult to reach the requirement of A level, the fire resistance of inorganic heat insulation material has reached the requirement of A level, but because the shortcoming that self exists can not be used for Highrise buildings.
In the recent period; The fire disaster accident frequently takes place in domestic exterior wall heat insulating work; Caused the leader's of State Council great attention; The Ministry of Public Security has promptly issued " about the notice of further clear and definite covil construction heat insulating material for external fire supervision management relevant requirements " (public affairs disappear [2011] No. 65 file) on March 14th, 2011; Require to carry out as strict as possible [2009] No. 46 files, it is the material of A level that the covil construction heat insulating material for external adopts combustionproperty, and with its extent of tests of including the construction work fire validate in, check and accept and put on record.So the combustionproperty of " warming plate " of covil construction exterior wall is necessary for the A level, the warming plate that does not reach the A level will be torn open to be taken off.Product of the present invention is researched and developed under this background.
Summary of the invention
The objective of the invention is to overcome that the inorganic heat insulation material insulating efficiency is low, own wt is big; Shortcomings such as fire-retardant not up to standard, the not environmental protection of organic insulation material, burning fuming amount be big, discharge toxic and harmful, heat insulation effect is low, provide a kind of heat insulation and preservation effect good, reach that the fire-retardant requirement of A level, environment-protecting asepsis are tasteless, cross-linked type macromolecule foam composite material and preparation method thereof.
For realizing above purpose, technical solution of the present invention is: the prevent fires preparation method of energy-conservation rubber and plastic composite building thermal insulation material of a kind of A level, and this preparation method may further comprise the steps successively:
The first step: base material A mixing granulation: get the polypropylene powder resin of 50-70 weight part, the methyl vinyl silicone rubber of 30-50 weight part, the ceramics powder of 20-30 weight part, the fire retardant magnesium hydroxide of 50-80 weight part, the flame retardant microcapsule ammonium polyphosphate of 10-15 weight part earlier; The antioxidant 1010 # of the fire retardant zinc borate of 10-15 weight part, the glass fiber powder of 10-15 weight part, 0.2-0.5 weight part, the WHITE CARBON BLACK of 10-15 weight part, 2-3 weight account polyethylene wax join in the high-speed mixer; Normal temperature was mediated 3 – 5 minutes down; Enter the material group after banburying in the Banbury mixer gets banburying then; The banburying temperature is 100 ± 5 ℃; The banburying time is 6 – 8 minutes, the group of the material after the banburying is entered in single screw extruder pelletizer through forced feed again, and the fusion plastification granulation makes base material A;
Second step: the preparation of foaming concentrate B: the ldpe resin of getting 50 weight parts earlier adds in the high mixer; Add the AC whipping agent Cellmic C 121 of 20 weight parts, the talcum powder of 1 weight part, the lubricant polyethylene wax of 2 weight parts, the Zinic stearas of 1 weight part again; Normal temperature was mediated 3 minutes down, entered the single screw extrusion machine granulation then to obtain foaming concentrate B;
The 3rd step: the preparation of sheet material C: get 80 –, 100 weight part base material A, the foaming concentrate B of 8 –, 10 weight parts, the polyethylene wax of 2-3 weight part; Join in the high-speed mixer; Normal temperature was mediated 3 minutes down; Enter single screw extrusion machine then, (technological temperature is face as follows) is extruded into sheet material under the technological temperature of regulation;
The 4th step: the cross-linking radiation of product: carry out cross-linking radiation to the sheet material that extrudes through rumbatron; Irradiation dose: 15-18 megarad.
The 5th step: the foaming of product: the sheet material after crosslinked is put into foaming furnace foam, the temperature of foaming is 260 ± 10 ℃.
The 6th step: slot the foam surface that the 5th step prepared, equipment is the plastic plate slotting machine.
The 7th step: the embedding of high-efficiency fireproof filler: the high-efficiency fireproof filler is embedded in the groove of foam.
The 8th step: the foam sheet material that will embed fire-proof packing is put into fire-resistant fluid and is flooded, and time of immersion 5-8 minute, gets into drying room then and toasts 80-100 ℃ of drying room temperature, storing time 5-8 minute.
The working temperature of single screw extruder pelletizer is in the said the first step: 125 ℃ in a district, 135 ℃ in two districts, 145 ℃ in three districts, 155 ℃ in four districts, 150 ℃ in five districts;
The working temperature of single screw extruder pelletizer is in said second step: 90 ℃ in a district, 95 ℃ in two districts, 100 ℃ in three districts, 105 ℃ in four districts;
The working temperature of single screw extrusion machine is in said the 3rd step: 80 ℃ in a district, 85 ℃ in two districts, 95 ℃ in three districts, 90 ℃ in four districts.
Make A level fire prevention energy-saving heat preserving rubber and plastic complex building foam by aforesaid method.
The effect of main raw material(s) is following among the present invention:
The present invention through a large amount of prescriptions have a competition, starting material simultaneous test and practical experience, drawn present production formula and production technique, selected starting material all are best, contribution also is best to performance of products.
Polypropylene powder: extrusion resin, model, T30S, F401;
Methyl vinyl silicone rubber: base resin, model 101
Ceramics powder: heat shielding additives;
Marinco H: fire retardant;
Micro encapsulation ammonium polyphosphate: fire retardant;
Zinc borate: fire retardant;
Ldpe resin: Qilu Petrochemical 7042 or Central Plains petrochemical industry 7050;
Whipping agent: select the AC whipping agent for use, because of its foaming effect best, and environment-protecting asepsis.
Glass fiber powder: heat-resisting toughener, the spun glass of pulverizing;
Polyethylene wax: lubricant; Model C H-5, molecular weight 3000.
WHITE CARBON BLACK: strengthening agent;
Talcum powder: frothing aid;
High-efficiency fireproof filler: white powder, staple, Marinco H, alumag (the prosperous fire retardant material in Shenzhen ltd product);
Fire-resistant fluid: colourless transparent liquid, staple, inorganic phosphate compound (Changzhou Chemical Research Industry Co., Ltd.'s product);
Oxidation inhibitor: model 1010 prevents material oxidation in use.
The product that the present invention produces not only has flame retardant properties preferably, and the combustionproperty grade reaches the A level, and thermal conductivity is less than 0.02 W/m K, well below other lagging material.
Embodiment
Embodiment 1: the prevent fires preparation method of energy-conservation rubber and plastic composite building thermal insulation material of a kind of A level, and this preparation method may further comprise the steps successively:
The first step: base material A mixing granulation: the polypropylene powder resin (model: T30S) the flame retardant microcapsule ammonium polyphosphate of the fire retardant magnesium hydroxide of the ceramics powder of the methyl vinyl silicone rubber of 30 weight parts, 20 weight parts, 50 weight parts, 10 weight parts of getting 50 weight parts earlier; The antioxidant 1010 # of the fire retardant zinc borate of 10 weight parts, the glass fiber powder of 10 weight parts, 0.2 weight part, the WHITE CARBON BLACK of 10 weight parts, 2 weight account polyethylene waxes join in the high-speed mixer; Normal temperature was mediated 3 – 5 minutes down; Enter the material group after banburying in the Banbury mixer gets banburying then; The banburying temperature is 100 ± 5 ℃; The banburying time is 6 – 8 minutes, the group of the material after the banburying is entered in single screw extruder pelletizer through forced feed again, and the fusion plastification granulation makes base material A;
Second step: the preparation of foaming concentrate B: the ldpe resin (Qilu Petrochemical 7042) of getting 50 weight parts earlier adds in the high mixer; Add the AC whipping agent Cellmic C 121 of 20 weight parts, the talcum powder of 1 weight part, the lubricant polyethylene wax of 2 weight parts, the Zinic stearas of 1 weight part again; Normal temperature was mediated 3 minutes down, entered the single screw extrusion machine granulation then to obtain foaming concentrate B;
The 3rd step: the preparation of sheet material C: get the foaming concentrate B of 80 weight part base material A, 8 weight parts, the polyethylene wax of 2 weight parts; Join in the high-speed mixer; Normal temperature was mediated 3 minutes down; Enter single screw extrusion machine then, (technological temperature is face as follows) is extruded into sheet material under the technological temperature of regulation;
The 4th step: the cross-linking radiation of product: carry out cross-linking radiation to the sheet material that extrudes through rumbatron; Irradiation dose: 15-18 megarad.
The 5th step: the foaming of product: the sheet material after crosslinked is put into foaming furnace foam, the temperature of foaming is 260 ± 10 ℃.
The 6th step: slot the foam surface that the 5th step prepared, equipment is the plastic plate slotting machine.
The 7th step: the embedding of high-efficiency fireproof filler: the high-efficiency fireproof filler is embedded in the groove of foam.
The 8th step: the foam sheet material that will embed fire-proof packing is put into fire-resistant fluid and is flooded, and time of immersion 5-8 minute, get into baking oven then and toast, oven temperature 80-100 ℃, storing time 5-8 minute.
The working temperature of single screw extruder pelletizer is in the said the first step: 125 ℃ in a district, 135 ℃ in two districts, 145 ℃ in three districts, 155 ℃ in four districts, 150 ℃ in five districts;
The working temperature of single screw extruder pelletizer is in said second step: 90 ℃ in a district, 95 ℃ in two districts, 100 ℃ in three districts, 105 ℃ in four districts;
The working temperature of single screw extrusion machine is in said the 3rd step: 80 ℃ in a district, 85 ℃ in two districts, 95 ℃ in three districts, 90 ℃ in four districts.
Make A level fire prevention energy-saving heat preserving rubber and plastic complex building foam by aforesaid method.The combustionproperty grade reaches the A level, thermal conductivity 0.019
, density 48Kg/cm
3, compressive strength 0.15MPa.
Embodiment 2:
With instance 1; Different is the first step: the polypropylene powder resin (model: F401) the flame retardant microcapsule ammonium polyphosphate of the fire retardant magnesium hydroxide of the ceramics powder of the methyl vinyl silicone rubber of 50 weight parts, 30 weight parts, 80 weight parts, 15 weight parts, the antioxidant 1010 # of the fire retardant zinc borate of 15 weight parts, the glass fiber powder of 15 weight parts, 0.5 weight part, the WHITE CARBON BLACK of 15 weight parts, 3 weight account polyethylene waxes of getting 70 weight parts; Ldpe resin in second step is a Central Plains petrochemical industry ldpe resin 7050; The 3rd step: the foaming concentrate B of 100 weight part base material A, 10 weight parts, the polyethylene wax of 3 weight parts.The fire prevention energy-saving heat preserving rubber and plastic complex building foam that makes, the combustionproperty grade reaches the A level, thermal conductivity 0.015
, density 40Kg/cm
3, compressive strength 0.10MPa.
Embodiment 3:
With instance 1, different was the 3rd step: the foaming concentrate B of 100 weight part base material A, 10 weight parts, the polyethylene wax of 3 weight parts.The fire prevention energy-saving heat preserving rubber and plastic complex building foam that makes, the combustionproperty grade reaches the A level, thermal conductivity 0.015
, density 45Kg/cm
3, compressive strength 0.25MPa.
Embodiment 4:
With instance 1; Different is the first step: the ceramics powder of the polypropylene powder resin of 70 weight parts, the methyl vinyl silicone rubber of 50 weight parts, 30 weight parts, the fire retardant magnesium hydroxide of 80 weight parts, the flame retardant microcapsule ammonium polyphosphate of 15 weight parts, the antioxidant 1010 # of the fire retardant zinc borate of 15 weight parts, the glass fiber powder of 15 weight parts, 0.5 weight part, the WHITE CARBON BLACK of 15 weight parts, 3 weight account polyethylene waxes; The 3rd step: the foaming concentrate B of 80 weight part base material A, 8 weight parts, the polyethylene wax of 2 weight parts.The fire prevention energy-saving heat preserving rubber and plastic complex building foam that makes, the combustionproperty grade reaches the A level, thermal conductivity 0.016
, density 56Kg/cm
3, compressive strength 0.20MPa.
Claims (3)
1.A the preparation method of the energy-conservation rubber and plastic composite building thermal insulation material of level fire prevention, this preparation method may further comprise the steps successively:
The first step: base material A mixing granulation: get the polypropylene powder resin of 50-70 weight part, the methyl vinyl silicone rubber of 30-50 weight part, the ceramics powder of 20-30 weight part, the fire retardant magnesium hydroxide of 50-80 weight part, the flame retardant microcapsule ammonium polyphosphate of 10-15 weight part, the fire retardant zinc borate of 10-15 weight part, the glass fiber powder of 10-15 weight part, the antioxidant 1010 # of 0.2-0.5 weight part, the WHITE CARBON BLACK and the 2-3 weight account polyethylene wax of 10-15 weight part earlier and join in the high-speed mixer; Normal temperature was mediated 3 – 5 minutes down; Enter the material group after banburying in the Banbury mixer gets banburying then; The banburying temperature is 100 ± 5 ℃; The banburying time is 6 – 8 minutes; The group of the material after the banburying is entered in single screw extruder pelletizer through forced feed, the fusion plastification granulation makes base material A again;
Second step: the preparation of foaming concentrate B: the ldpe resin of getting 50 weight parts earlier adds in the high mixer; Add the AC whipping agent Cellmic C 121 of 20 weight parts, the talcum powder of 1 weight part, the lubricant polyethylene wax of 2 weight parts, the Zinic stearas of 1 weight part again; Normal temperature was mediated 3 minutes down, entered the single screw extrusion machine granulation then to obtain foaming concentrate B;
The 3rd step: the preparation of sheet material C: get 80 –, 100 weight part base material A, the foaming concentrate B of 8 –, 10 weight parts, the polyethylene wax of 2-3 weight part, join in the high-speed mixer, normal temperature was mediated 3 minutes down, entered single screw extrusion machine then and was extruded into sheet material;
The 4th step: the cross-linking radiation of product: carry out cross-linking radiation to the sheet material that extrudes through rumbatron; Irradiation dose: 15-18 megarad;
The 5th step: the foaming of product: the sheet material after crosslinked is put into foaming furnace foam, the temperature of foaming is 260 ± 10 ℃;
The 6th step: slot in the foam surface to the 5th step prepared;
The 7th step: the embedding of fire-proof packing: fire-proof packing is embedded in the groove of foam;
The 8th step: the foam sheet material that will embed fire-proof packing is put into fire-resistant fluid and is flooded, and time of immersion 5-8 minute, gets into drying room then and toasts 80-100 ℃ of drying room temperature, storing time 5-8 minute.
2. preparation method according to claim 1 is characterized in that:
The working temperature of single screw extruder pelletizer is in the said the first step: 125 ℃ in a district, 135 ℃ in two districts, 145 ℃ in three districts, 155 ℃ in four districts, 150 ℃ in five districts;
The working temperature of single screw extruder pelletizer is in said second step: 90 ℃ in a district, 95 ℃ in two districts, 100 ℃ in three districts, 105 ℃ in four districts;
The working temperature of single screw extrusion machine is in said the 3rd step: 80 ℃ in a district, 85 ℃ in two districts, 95 ℃ in three districts, 90 ℃ in four districts.
3. the A level that makes by claim 1 or the 2 said methods energy-conservation rubber and plastic composite building thermal insulation material of preventing fires.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103467842A (en) * | 2013-08-22 | 2013-12-25 | 湖北祥源新材科技有限公司 | Electron accelerator irradiation crosslinking pure polypropylene foaming sheet material and preparation method thereof |
| CN103834109A (en) * | 2014-03-24 | 2014-06-04 | 陈文征 | Novel type sealing filler for oil pumping unit and preparation method thereof |
| CN103849149A (en) * | 2014-03-06 | 2014-06-11 | 汉川市鑫天节能保温材料有限公司 | Polymer composite foam material and preparation method thereof |
| CN105174822A (en) * | 2015-08-18 | 2015-12-23 | 苏州赛斯德工程设备有限公司 | Preparation method for self-insulation material used for exterior wall of building |
| CN105315673A (en) * | 2015-12-08 | 2016-02-10 | 苏州市享乐惠信息科技有限公司 | High-insulation silica gel plate |
| CN105623268A (en) * | 2016-01-23 | 2016-06-01 | 中山安荞生物科技有限公司 | Insulating antrodia strain preserving pipe |
| CN105885181A (en) * | 2016-06-26 | 2016-08-24 | 山东绿森塑木复合材料有限公司 | Preparation method of foaming masterbatch for polyolefin wood-plastic composite |
| CN105884393A (en) * | 2016-04-19 | 2016-08-24 | 王维娜 | Energy-saving thermal insulation board with high flame retardancy and preparation method of thermal insulation board |
| CN107698861A (en) * | 2016-11-15 | 2018-02-16 | 衡水高朋塑料制品有限公司 | The preparation method of electron irradiation crosslinking foaming polypropylene sheet |
| CN108342018A (en) * | 2018-02-24 | 2018-07-31 | 河南长兴实业有限公司 | Fire prevention grade Air Filter |
| CN114479234A (en) * | 2020-11-12 | 2022-05-13 | 上海映甫新材料科技有限公司 | Flame-retardant foam heat-insulation material and preparation method thereof |
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| CN103467842A (en) * | 2013-08-22 | 2013-12-25 | 湖北祥源新材科技有限公司 | Electron accelerator irradiation crosslinking pure polypropylene foaming sheet material and preparation method thereof |
| CN103467842B (en) * | 2013-08-22 | 2015-11-25 | 湖北祥源新材科技有限公司 | A kind of electron accelerator irradiation is cross-linked virgin pp foam sheet and preparation method |
| CN103849149A (en) * | 2014-03-06 | 2014-06-11 | 汉川市鑫天节能保温材料有限公司 | Polymer composite foam material and preparation method thereof |
| CN103834109A (en) * | 2014-03-24 | 2014-06-04 | 陈文征 | Novel type sealing filler for oil pumping unit and preparation method thereof |
| CN103834109B (en) * | 2014-03-24 | 2016-02-03 | 陈文征 | A kind of lock packing used for oil extractor and preparation method thereof |
| CN105174822A (en) * | 2015-08-18 | 2015-12-23 | 苏州赛斯德工程设备有限公司 | Preparation method for self-insulation material used for exterior wall of building |
| CN105315673A (en) * | 2015-12-08 | 2016-02-10 | 苏州市享乐惠信息科技有限公司 | High-insulation silica gel plate |
| CN105623268A (en) * | 2016-01-23 | 2016-06-01 | 中山安荞生物科技有限公司 | Insulating antrodia strain preserving pipe |
| CN105884393A (en) * | 2016-04-19 | 2016-08-24 | 王维娜 | Energy-saving thermal insulation board with high flame retardancy and preparation method of thermal insulation board |
| CN105884393B (en) * | 2016-04-19 | 2018-05-25 | 天贺控股有限公司 | A kind of energy-conserving thermal insulation board of high fire-retardance and preparation method thereof |
| CN105885181A (en) * | 2016-06-26 | 2016-08-24 | 山东绿森塑木复合材料有限公司 | Preparation method of foaming masterbatch for polyolefin wood-plastic composite |
| CN107698861A (en) * | 2016-11-15 | 2018-02-16 | 衡水高朋塑料制品有限公司 | The preparation method of electron irradiation crosslinking foaming polypropylene sheet |
| CN107698861B (en) * | 2016-11-15 | 2019-11-05 | 衡水高朋塑料制品有限公司 | The preparation method of electron irradiation crosslinking foaming polypropylene sheet |
| CN108342018A (en) * | 2018-02-24 | 2018-07-31 | 河南长兴实业有限公司 | Fire prevention grade Air Filter |
| CN114479234A (en) * | 2020-11-12 | 2022-05-13 | 上海映甫新材料科技有限公司 | Flame-retardant foam heat-insulation material and preparation method thereof |
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