CN108997649A - A kind of anti-flaming polypropylene material and its preparation and application - Google Patents
A kind of anti-flaming polypropylene material and its preparation and application Download PDFInfo
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- 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
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
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- C08K3/32—Phosphorus-containing compounds
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
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Abstract
The invention proposes a kind of anti-flaming polypropylene material and its preparations and application, are prepared by weight by following raw material: 70-90 parts of polypropylene, microcapsules of storing energy through phase change 20-30 parts modified, 20-40 parts of cryogenic glass powder, 10-30 parts of montmorillonite, 10-30 parts of kaolin, 10-15 parts of antioxidant, 5-10 parts of initiator, 10-15 parts of fire retardant, 10-20 parts of coupling agent, 5-15 parts of isopropanol and 50-70 parts of deionized water.Anti-flaming polypropylene material preparation method prepared by the present invention is simple, easy to industrialized production, adds porcelain material, improves the fire-protection rating of material.
Description
Technical field
The present invention relates to technical field of polymer materials, and in particular to a kind of anti-flaming polypropylene material.
Background technique
Polypropylene is the highly crystalline polymer of nontoxic, odorless, tasteless milky.It is particularly stable to water, good moldability,
Easy processing and cheap, is widely used in the industries such as chemical industry, chemical fibre, packaging, household electrical appliances.But that there are high temperature resistants is strong for polypropylene
The disadvantages of degree is insufficient and inflammable easy smoke, which greatly limits the application ranges of polypropylene material.
Flame-retardant polypropylene film has good folding resistance and high pressure resistant breakdown (being resistant to 5000V or more high pressure), because
This has a wide range of applications in electronic enterprises.Only there is the polypropylene film of halogen fire retardant to can be only achieved electronics with use at present
The harsh flame-retardancy requirements of electrical apparatus industry.There is halogen fire retardant to release a large amount of dense smoke and corrosive halide in burning, makes
At casualties and corrode various equipment, causes so-called " secondary disaster ".With the understanding to halogen flame retardant material harmfulness
Intensification, almost all of halogen flame retardant material gradually substitutes by bittern-free flame-proof material, electronic enterprises it is this become
Gesture is more obvious, all halogen flame retardant products (except special applications) will be eliminated after 2010, so needing a kind of nothing in a hurry
Halogen flame retardant type and the firm grade polypropylene material for being able to satisfy flame-retardancy requirements He other performance requirements again.
Patent CN103965636A discloses a kind of automotive plastic parts polypropylene flame redardant modified polyphenyl thioether material, passes through
Glass fibre, polypropylene, diatomite, magnesia, accelerant B PP, flyash, aminopropyl-triethoxy are added in polyphenylene sulfide
The advantages of components such as silane, beryllium oxide, polypropylene material obtained combines the raw materials such as polyphenylene sulfide, polypropylene, glass fibre,
With good processing performance and mechanical performance, but its flame retardant property is bad, is not able to satisfy electronic equipment for fire-retardant requirement.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of anti-flaming polypropylene material and its preparation and application,
Purpose is, provides a kind of anti-flaming polypropylene material, by adding microcapsules of storing energy through phase change, capable of being effectively improved fire retardant and gathering
The compatibility for closing object, further improves the thermal insulation property and flame retardant property of material, by adding porcelain material, can effectively protect
Internal material is protected from the destruction of high fire and high temperature, improves the fire-protection rating of material.
The present invention provides a kind of anti-flaming polypropylene material, is prepared by weight by following raw material: polypropylene 70-90
Part, 10-30 parts of montmorillonite, 10-30 parts of kaolin, resists microcapsules of storing energy through phase change 20-30 parts modified, 20-40 parts of cryogenic glass powder
10-15 parts of oxygen agent, 5-10 parts of initiator, 10-15 parts of fire retardant, 10-20 parts of coupling agent, 5-15 parts of isopropanol and deionized water
50-70 parts；
The initiator is selected from benzoyl peroxide, lauroyl peroxide, peroxidized t-butyl perbenzoate, peroxidating uncle penta
Sour tertiary butyl ester, di-isopropyl peroxydicarbonate, sodium peroxydisulfate, ammonium persulfate, azodiisobutyronitrile, in azobisisoheptonitrile
One or more；
The fire retardant be selected from aluminium hydroxide, magnesium hydroxide, nanoporous nickel phosphate, (O, O- diethyl sulfide are for phosphorus by 1,4-
Imide) it benzene, red phosphorus, 1,2,3- tri- (5,5- dimethyl -1,3- dioxa oneself in phosphate-based) benzene, caged siloxanes, receives
One or more of rice silica, decabromodiphenylethane, ammonium polyphosphate, pentaerythrite, melamine；
The coupling agent be silane coupling agent, one in KH550, KH560, KH570, KH792, DL602, DL171
Kind；
The antioxidant is selected from one or more of double Lauryl Alcohol esters, bi-myristoleyl and double octadecanol esters.
As further improvement of the invention, be prepared by weight by following raw material: 75-85 parts of polypropylene is modified
22-27 parts of microcapsules of storing energy through phase change, 25-35 parts of cryogenic glass powder, 15-25 parts of montmorillonite, 15-25 parts of kaolin, antioxidant 11-
13 parts, 6-9 parts of initiator, 11-13 parts of fire retardant, 12-17 parts of coupling agent, 7-12 parts of isopropanol and 55-65 parts of deionized water.
It as further improvement of the invention, is prepared by weight by following raw material: 80 parts of polypropylene, modified phase transformation
It is 25 parts of accumulation energy microcapsule, 30 parts of cryogenic glass powder, 20 parts of montmorillonite, 20 parts of kaolin, 12 parts of antioxidant, 7 parts of initiator, fire-retardant
10 parts of agent, 15 parts of coupling agent, 10 parts of isopropanol and 60 parts of deionized water.
Improved as of the invention further, microcapsules of storing energy through phase change is prepared according to the following steps: according to the proportion by paraffin,
Lauxite, deionized water, dehydrated alcohol are added in reaction kettle, heat the mixture to 50-90 DEG C, when mixture becomes nothing
Emulsifier is added when color transparency liquid, continuously adds ammonium polyphosphate and initiator, reaction temperature is fixed on 90 DEG C, reaction carries out
Removal impurity is washed with deionized in 10-20h, obtained sample, finally by 40 DEG C of sample vacuum drying to get；
The initiator is selected from azodiisobutyronitrile, azobisisoheptonitrile, two NSC 18620 hydrochloric acid of azo, two isobutyl miaow of azo
One of oxazoline hydrochloride, azo-bis-iso-dimethyl, azo isobutyl cyano formamide；
The emulsifier is selected from sodium salt hydrolysate, the ethylene maleic acid that emulsifier is selected from styrene-maleic anhydride copolymer
Sodium salt hydrolysate, the vinyl methyl ether-maleic anhydride multipolymer sodium salt hydrolysate, isobutylene maleic of anhydride copolymer
Sodium salt hydrolysate, acrylic or methacrylic acid and the styrene of anhydride copolymer, ethylene, vinyl alcohol, vinylacetate, methyl-prop
Copolymer obtained by acrylamide, isobutene, acrylate, methacrylate or acrylonitrile compolymer, gathers polyvinylbenzenesulfonic acid
One or more of vinylbenzenesulfonic acid sodium.
As further improvement of the invention, microcapsules of storing energy through phase change is prepared by weight by following material: paraffin
20-40 parts, 20-30 parts of Lauxite, 30-50 parts of ammonium polyphosphate, 30-60 parts of dehydrated alcohol, 40-70 parts of deionized water, emulsification
10-15 parts and initiator 1-5 parts of agent.
The present invention further protects a kind of preparation method of above-mentioned anti-flaming polypropylene material, follows the steps below:
Step 1: polypropylene, initiator and fire retardant are mixed in proportion, heating stirring, polypropylene fire retardant substance is made
Compound system；
Step 2: system made from step 1 is added in microcapsules of storing energy through phase change, coupling is sprayed into stirring, mixed process
Agent, antioxidant, cryogenic glass powder, montmorillonite, kaolin, isopropanol and deionized water mixture, polypropylene fire retardant object is made
Matter mixture；
Step 3: the mixture of step 2 preparation is pressed certain process conditions compression molding on hot press, obtain fire-retardant
Polypropylene material.
As further improvement of the invention, 60-100 DEG C is heated in step 1.
As further improvement of the invention, process conditions: temperature is 100-150 DEG C, time 10-20min, and pressure is
1.5-1.7MPa。
The present invention further protects a kind of application of above-mentioned anti-flaming polypropylene material.
The invention has the following beneficial effects:
1. improving the compatibility of fire retardant and polymer by addition microcapsules of storing energy through phase change, further improving material
Thermal insulation property and flame retardant property；
2. by addition porcelain material --- cryogenic glass powder, montmorillonite and kaolin, when material encounters 350 DEG C or more
When the flame ablation of nonflame high temperature and 500 DEG C or more, inorganic hollow ceramic material, the special pottery of this formation can be converted into
Ceramic material has the advantages that insulation, heat-insulated, fire insulation, water proof, antidetonation, small thermal weight loss, and internal material can be effectively protected from big
The destruction of fire and high temperature, improves the fire-protection rating of material；
3. anti-flaming polypropylene material prepared by the present invention, preparation method is simple, easy to industrialized production.
Detailed description of the invention
Fig. 1 is the preparation technology figure of anti-flaming polypropylene material.
Specific embodiment
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, the embodiment described is the embodiment of part of representative of the invention, rather than whole embodiments, this field are general
Other all embodiments obtained belong to protection of the invention to logical technical staff without making creative work
Range.
The preparation of 1 anti-flaming polypropylene material of embodiment
Raw material composition: 70 parts of polypropylene, modified 20 parts of microcapsules of storing energy through phase change, 20 parts of cryogenic glass powder, 10 parts of montmorillonite,
10 parts of kaolin, 10 parts of double Lauryl Alcohol esters, 5 parts of benzoyl peroxide, 10 parts of nanoporous nickel phosphate, coupling agent KH56010
Part, 5 parts of isopropanol and 50 parts of deionized water；
The preparation of microcapsules of storing energy through phase change:
20 parts of paraffin, 20 parts of Lauxite, 30 parts of ammonium polyphosphate, 30 parts of dehydrated alcohol, 40 parts of deionized water, acrylic acid or
Methacrylic acid and 10 parts of styrene and 1 part of azobisisoheptonitrile；
Paraffin, Lauxite, deionized water, dehydrated alcohol are added in reaction kettle according to the proportion, mixture is heated
To 50 DEG C, acrylic or methacrylic acid and styrene are added when mixture becomes colorless transparency liquid, continuously adds poly- phosphorus
Reaction temperature is fixed on 90 DEG C by sour ammonium and azobisisoheptonitrile, and reaction carries out 10h, and obtained sample is washed with deionized
Except impurity, finally by 40 DEG C of sample vacuum drying to get.
The preparation of anti-flaming polypropylene material:
Step 1: polypropylene, benzoyl peroxide and nanoporous nickel phosphate are mixed in proportion, are heated to 60 DEG C, stir
It mixes, polypropylene fire retardant agent complex system is made；
Step 2: system made from step 1 is added in microcapsules of storing energy through phase change, coupling is sprayed into stirring, mixed process
Agent KH560, double Lauryl Alcohol esters, cryogenic glass powder, montmorillonite, kaolin, isopropanol and deionized water mixture, be made poly-
Propylene fire retardant matter mixture；
Step 3: by certain process conditions, (temperature is 100 DEG C, time 10min, pressure by the mixture of step 2 preparation
Power is 1.5MPa) compression molding on hot press, obtain anti-flaming polypropylene material.
The preparation of 2 anti-flaming polypropylene material of embodiment
Raw material composition: 90 parts of polypropylene, modified 30 parts of microcapsules of storing energy through phase change, 40 parts of cryogenic glass powder, 30 parts of montmorillonite,
30 parts of kaolin, 15 parts of bi-myristoleyl, 10 parts of di-isopropyl peroxydicarbonate, 15 parts of ammonium polyphosphate, coupling agent
KH79220 parts, 15 parts of isopropanol and 70 parts of deionized water；
The preparation of microcapsules of storing energy through phase change:
40 parts of paraffin, 30 parts of Lauxite, 50 parts of ammonium polyphosphate, 60 parts of dehydrated alcohol, 70 parts of deionized water, metering system
5 parts of 15 parts of amide and azo isobutyl cyano formamide；
Paraffin, Lauxite, deionized water, dehydrated alcohol are added in reaction kettle according to the proportion, mixture is heated
To 90 DEG C, Methacrylamide is added when mixture becomes colorless transparency liquid, continuously adds ammonium polyphosphate and azo isobutyl
Reaction temperature is fixed on 90 DEG C by cyano formamide, and reaction carries out 20h, and removal impurity is washed with deionized in obtained sample, most
Afterwards by 40 DEG C of sample vacuum drying to get.
The preparation of anti-flaming polypropylene material:
Step 1: polypropylene, di-isopropyl peroxydicarbonate and ammonium polyphosphate are mixed in proportion, are heated to 100 DEG C,
Stirring, is made polypropylene fire retardant agent complex system；
Step 2: system made from step 1 is added in microcapsules of storing energy through phase change, coupling is sprayed into stirring, mixed process
Agent KH792, bi-myristoleyl, cryogenic glass powder, montmorillonite, kaolin, isopropanol and deionized water mixture, be made poly-
Propylene fire retardant matter mixture；
Step 3: by certain process conditions, (temperature is 150 DEG C, time 20min, pressure by the mixture of step 2 preparation
Power is 1.7MPa) compression molding on hot press, obtain anti-flaming polypropylene material.
The preparation of 3 anti-flaming polypropylene material of embodiment
Raw material composition: 80 parts of polypropylene, modified 25 parts of microcapsules of storing energy through phase change, 30 parts of cryogenic glass powder, 20 parts of montmorillonite,
20 parts of kaolin, 12 parts of double octadecanol esters, 7 parts of peroxidating trimethylacetic acid tertiary butyl ester, 10 parts of nano silica, coupling agent
DL60215 parts, 10 parts of isopropanol and 60 parts of deionized water；
The preparation of microcapsules of storing energy through phase change:
30 parts of paraffin, 25 parts of Lauxite, 40 parts of ammonium polyphosphate, 45 parts of dehydrated alcohol, 50 parts of deionized water, styrene-
3 parts of 12 parts of the sodium salt hydrolysate of copolymer-maleic anhydride and two isobutyl imidazoline hydrochloride of azo；
Paraffin, Lauxite, deionized water, dehydrated alcohol are added in reaction kettle according to the proportion, mixture is heated
To 70 DEG C, the sodium salt hydrolysate of styrene-maleic anhydride copolymer is added when mixture becomes colorless transparency liquid, continues to add
Enter two isobutyl imidazoline hydrochloride of ammonium polyphosphate and azo, reaction temperature is fixed on 90 DEG C, reaction carries out 15h, and sample is made
Removal impurity is washed with deionized, finally by 40 DEG C of sample vacuum drying to get.
The preparation of anti-flaming polypropylene material:
Step 1: polypropylene, peroxidating trimethylacetic acid tertiary butyl ester and nano silica are mixed in proportion, are heated to 80
DEG C, polypropylene fire retardant agent complex system is made in stirring；
Step 2: system made from step 1 is added in microcapsules of storing energy through phase change, the spray image connection in stirring, mixed process
Agent DL602, double octadecanol esters, cryogenic glass powder, montmorillonite, kaolin, isopropanol and deionized water mixture, be made poly-
Propylene fire retardant matter mixture；
Step 3: by certain process conditions, (temperature is 125 DEG C, time 15min, pressure by the mixture of step 2 preparation
Power is 1.6MPa) compression molding on hot press, obtain anti-flaming polypropylene material.
Reference examples 1 are prepared according to " halogen-free anti-flaming polypropylene material " method of ZL 200910031388.0
Material quality percentage composition: the first copolymer polypropylene 15%, second of copolymer polypropylene 45.5%, hindered phenol
Heat stabilizer 0.3%, thio ester heat stabilizer 0.1%, matal deactivator 0.2%, phosphate processing stabilizers 0.4%, 1,3 benzene
Bis- (diphenyl phosphoesters) 0.5% of diphenol, ammonium polyphosphate 36%.
Preparation method: two kinds of polypropylene are the same as hindered phenol heat stabilizer, thio ester heat stabilizer, matal deactivator, 1,3 benzene two
Phenol bis- (diphenyl phosphoesters) and hydrotalcite antacid are mixed together uniformly, are added from first main feed opening of screw extruder
Enter, ammonium polyphosphate flame retardant and phosphate processing stabilizers are added separately to from second of extruder and third feed opening, so
It is kneaded afterwards, is cooling, being granulated.
Reference examples 2 are prepared according to ZL 201510056293.X " a kind of anti-flaming polypropylene material and preparation method thereof " method
(1) acrylic resin 85kg, glass fibre 15kg, diatomite 5kg, azodiisobutyronitrile 2kg, tripolyphosphate are weighed
Sodium 0.8kg, poly-epoxy succinic acid 0.5kg and four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters
0.05kg；
(2) above-mentioned material is put into high-speed mixer and is uniformly mixed, by uniformly mixed material in two-roll mill
Be kneaded 5 minutes, melting temperature is 170 DEG C；
(3) feed opening that double screw extruder is added in the material after mixing is made through double screw extruder melting extrusion
Grain, is prepared anti-flaming polypropylene material, wherein area's temperature of the double screw extruder is 160 DEG C, and two area's temperature are
190 DEG C, three area's temperature are 230 DEG C, and four area's temperature are 210 DEG C, and five area's temperature are 180 DEG C, and head temperature is 220 DEG C, and host turns
Speed is 15HZ.
1 performance test of test case
Embodiment 1-3 and reference examples 1-2 is subjected to tensile strength and anti-flammability test, the performance test results are shown in Table 1.
1 each group material properties test result of table
As seen from the above table, anti-flaming polypropylene material prepared by the present invention has preferable mechanical property and anti-flammability, comprehensive
Performance is more excellent.
Those skilled in the art is not under conditions of departing from the spirit and scope of the present invention that claims determine, also
Various modifications can be carried out to the above content.Therefore the scope of the present invention is not limited in above explanation, but by
The range of claims determines.
Claims (9)
1. a kind of anti-flaming polypropylene material, which is characterized in that be prepared by weight by following raw material: 70-90 parts of polypropylene,
Modified microcapsules of storing energy through phase change 20-30 parts, 20-40 parts of cryogenic glass powder, 10-30 parts of montmorillonite, 10-30 parts of kaolin, antioxygen
10-15 parts of agent, 5-10 parts of initiator, 10-15 parts of fire retardant, 10-20 parts of coupling agent, 5-15 parts of isopropanol and deionized water 50-
70 parts；
The initiator is selected from benzoyl peroxide, lauroyl peroxide, peroxidized t-butyl perbenzoate, peroxidating trimethylacetic acid uncle
Butyl ester, di-isopropyl peroxydicarbonate, sodium peroxydisulfate, ammonium persulfate, azodiisobutyronitrile, one in azobisisoheptonitrile
Kind is several；
The fire retardant is selected from aluminium hydroxide, magnesium hydroxide, nanoporous nickel phosphate, 1,4-, and (O, O- diethyl sulfo-phosphoryl are sub-
Amido) benzene, red phosphorus, 1,2,3- tri- (5,5- dimethyl -1,3- dioxa oneself in phosphate-based) benzene, caged siloxanes, nanometer two
One or more of silica, decabromodiphenylethane, ammonium polyphosphate, pentaerythrite, melamine；
The coupling agent is silane coupling agent, selected from one of KH550, KH560, KH570, KH792, DL602, DL171；
The antioxidant is selected from one or more of double Lauryl Alcohol esters, bi-myristoleyl and double octadecanol esters.
2. a kind of anti-flaming polypropylene material according to claim 1, which is characterized in that prepared by weight by following raw material and
At: 75-85 parts of polypropylene, microcapsules of storing energy through phase change 22-27 parts modified, 25-35 parts of cryogenic glass powder, 15-25 parts of montmorillonite, height
Soil 15-25 parts of ridge, 11-13 parts of antioxidant, 6-9 parts of initiator, 11-13 parts of fire retardant, 12-17 parts of coupling agent, isopropanol 7-12
Part and deionized water 55-65 parts.
3. a kind of anti-flaming polypropylene material according to claim 1, which is characterized in that prepared by weight by following raw material and
At: 80 parts of polypropylene, 30 parts of cryogenic glass powder, 20 parts of montmorillonite, 20 parts of kaolin, resists modified 25 parts of microcapsules of storing energy through phase change
12 parts of oxygen agent, 7 parts of initiator, 10 parts of fire retardant, 15 parts of coupling agent, 10 parts of isopropanol and 60 parts of deionized water.
4. a kind of anti-flaming polypropylene material according to claim 1, which is characterized in that the microcapsules of storing energy through phase change according to
Paraffin, Lauxite, deionized water, dehydrated alcohol: being added in reaction kettle by the preparation of lower step according to the proportion, by mixture plus
Heat arrives 50-90 DEG C, and emulsifier is added when mixture becomes colorless transparency liquid, continuously adds ammonium polyphosphate and initiator, will
Reaction temperature is fixed on 90 DEG C, and reaction carries out 10-20h, and removal impurity is washed with deionized in obtained sample, finally by sample 40
DEG C vacuum drying to get；
The initiator is selected from azodiisobutyronitrile, azobisisoheptonitrile, two NSC 18620 hydrochloric acid of azo, two isobutyl imidazoline of azo
One of hydrochloride, azo-bis-iso-dimethyl, azo isobutyl cyano formamide；
It is total that the emulsifier is selected from sodium salt hydrolysate, ethylene-maleic acid of the emulsifier selected from styrene-maleic anhydride copolymer
Sodium salt hydrolysate, vinyl methyl ether-maleic anhydride multipolymer sodium salt hydrolysate, the isobutyiene-maieic anhydride of polymers are total
Sodium salt hydrolysate, acrylic or methacrylic acid and styrene, ethylene, vinyl alcohol, vinylacetate, the methacryl of polymers
Copolymer obtained by amine, isobutene, acrylate, methacrylate or acrylonitrile compolymer, polyvinylbenzenesulfonic acid, polyethylene
One or more of base benzene sulfonic acid sodium salt.
5. a kind of anti-flaming polypropylene material according to claim 4, which is characterized in that the microcapsules of storing energy through phase change is by following
Material is prepared by weight: 20-40 parts of paraffin, 20-30 parts of Lauxite, 30-50 parts of ammonium polyphosphate, dehydrated alcohol 30-
60 parts, 40-70 parts of deionized water, 10-15 parts of emulsifier and 1-5 parts of initiator.
6. a kind of preparation method of anti-flaming polypropylene material described in -5 any claims according to claim 1, which is characterized in that
It follows the steps below:
Step 1: polypropylene, initiator and fire retardant are mixed in proportion, heating stirring, it is compound that polypropylene fire retardant substance is made
System；
Step 2: system made from step 1 is added in microcapsules of storing energy through phase change, stirring, spray into mixed process coupling agent,
Antioxidant, cryogenic glass powder, montmorillonite, kaolin, isopropanol and deionized water mixture, it is mixed that polypropylene fire retardant substance is made
Close material；
Step 3: the mixture of step 2 preparation is pressed certain process conditions compression molding on hot press, flame-retardant polypropylene is obtained
Alkene material.
7. a kind of preparation method of anti-flaming polypropylene material according to claim 6, which is characterized in that add in the step 1
Heat is to 60-100 DEG C.
8. a kind of preparation method of anti-flaming polypropylene material according to claim 6, which is characterized in that the process conditions:
Temperature is 100-150 DEG C, time 10-20min, pressure 1.5-1.7MPa.
9. a kind of application of anti-flaming polypropylene material described in a kind of -5 any claims according to claim 1.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110204843A (en) * | 2019-05-17 | 2019-09-06 | 许艳辉 | A kind of flame-proof PVC material |
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| CN114685890A (en) * | 2021-12-19 | 2022-07-01 | 徐州苏力德木业有限公司 | Functionalized montmorillonite flame-retardant modified polypropylene composite board and preparation method thereof |
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| CN111154229A (en) * | 2020-01-18 | 2020-05-15 | 深圳垒石热管理技术有限公司 | Flame-retardant phase-change material film |
| CN114685890A (en) * | 2021-12-19 | 2022-07-01 | 徐州苏力德木业有限公司 | Functionalized montmorillonite flame-retardant modified polypropylene composite board and preparation method thereof |
| CN114685890B (en) * | 2021-12-19 | 2023-09-12 | 徐州苏力德木业有限公司 | Functionalized montmorillonite flame-retardant modified polypropylene composite board and preparation method thereof |
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