CN110183788A - A kind of fire prevention styrofoam and its production technology - Google Patents
A kind of fire prevention styrofoam and its production technology Download PDFInfo
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Abstract
The present invention relates to a kind of fire prevention styrofoam and its production technologies, belong to the technical field of styrofoam, in parts by weight, preparing raw material includes 60-75 parts of polystyrene, 0.5-2.0 parts of surfactant, 8-18 parts of silica, 9-16 parts of calcium carbonate, 15-25 parts of polyphenyl elastomer, 0.5-1.6 parts of dispersing agent, 14-26 parts of fiber reinforcement polyphenylene sulfide；Wherein the preparation step of fiber reinforcement polyphenylene sulfide includes preliminary infiltration, the preparation of phosphate coupling agent, the modification of fiber reinforcement polyphenylene sulfide of glass fibre and aramid fiber.The present invention also has excellent tensile strength and impact strength while maintaining compared with high flame resistance.
Description
Technical field
The present invention relates to the technical fields of styrofoam, more particularly, to a kind of fire prevention styrofoam and its production technology.
Background technique
Polystyrene foam plate abbreviation styrofoam, energy effective protection wall, intensity height, durable length, good heat insulating, often makees
It is widely used in wall insulation system for thermal insulation material, but traditional styrofoam fire protecting performance is poor, belongs to combustible material.
Traditional styrofoam can generate a large amount of toxic gas in combustion, at the same melt drip phenomenon it is obvious that
The generation of spot fire is easily caused, therefore, in order to improve the fire protecting performance of styrofoam, usually preparing in raw material to styrofoam
Fire retardant is added.In the industrial production, halogenated flame retardant using more, but halogenated flame retardant can discharge cause in combustion
Cancer substance " dioxin " and carbon tetrachloride pernicious gas, seriously affect the physical and mental health of the mankind.Subsequent people begin to use respectively
Kind of inorganic fire retardants, the flame retarding efficiency of inorganic fire retardants is low, needs additional amount 40% or more if wanting to reach fire retardant grade, however nothing
Compatibility between machine fire retardant and high molecular material is very poor, and the mechanical property of polymer will be reduced after a large amount of additions.
It is good therefore, it is necessary to study a kind of flame retardant property, while not influencing the styrofoam of mechanical properties of polymer again.
Summary of the invention
The purpose of the present invention one is to provide a kind of fire prevention styrofoam, while maintaining compared with high flame resistance, also has excellent
Different tensile strength and impact strength.
Above-mentioned purpose of the invention has the technical scheme that
A kind of fire prevention styrofoam, in parts by weight, preparing raw material includes 60-75 parts of polystyrene, surfactant 0.5-
2.0 parts, 8-18 parts of silica, 9-16 parts of calcium carbonate, 15-25 parts of polyphenyl elastomer, 0.5-1.6 parts of dispersing agent, fiber reinforcement
14-26 parts of polyphenylene sulfide；
Wherein, fiber reinforcement polyphenylene sulfide preparation the following steps are included:
S1: fiber tentatively infiltrates: in parts by weight, by 5-12 parts of glass fibre, 6-15 parts of aramid fiber, in mass fraction
To impregnate 30-50min in the sodium hydroxide solution of 5-8%, then use distilled water flushing, then by after cleaning glass fibre and virtue
Synthetic fibre fiber is placed in acetone soln and takes out after immersion 8-12h；
S2: configuration coupling agent solution: in parts by weight, by 7-12 part of ethyl alcohol, 0.5-2.0 parts of water, uniformly mixed alcohol is obtained
Aqueous solution, then phosphate coupling agent 0.2-1.3 parts is added into alcohol solution, and PH is adjusted to 4-5, it is uniformly mixed and is coupled
Agent solution, then the glass fibre tentatively infiltrated in S1 and aramid fiber are added in coupling agent solution and impregnate 3-5h, it takes out, in
Drying obtains composite fibre in 80-100 DEG C；
S3: the preparation of fiber reinforcement polyphenylene sulfide: in parts by weight, by 25-40 parts of polyphenylene sulfide, composite fibre 5-12
Part, 30-50min is mixed, fiber reinforcement polyphenylene sulfide is obtained.
By using above-mentioned technical proposal, polystyrene be have not soluble in water, light transmittance is high, it is stable chemically and easily
The widely used general-purpose plastics of one kind of the good characteristics such as processability, cheap, is Raw material processing into polyphenyl using polystyrene
Plate can be used for the insulating layer of wall, but traditional styrofoam mainly has two large problems, first is that the state of aggregation knot of polystyrene itself
Structure determines that it, for firm fragile material, shows as brittle fracture under stress；Second is that inflammable.
To solve first problem, silica and calcium carbonate are mixed in raw material in preparing, improves the intensity of polystyrene,
Polyphenyl elastomer is mixed, the toughness of polystyrene is improved, to improve the tensile strength and impact strength of polystyrene.
To improve fire protecting performance, polyphenylene sulfide is added in raw material in preparing, and carry out using glass fibre poly-p-phenylene sulfide ether
It is modified.Polyphenylene sulfide has excellent high temperature resistant, corrosion-resistant and flame retardant property, can replace adding for fire retardant using polyphenylene sulfide
Add, toxicity when reducing using fire retardant reduces the pollution to environment.But a large amount of phenyl ring increases height on polyphenylene sulfide main chain
Molecule chain rigidity then passes through composite fibre enhancing polyphenylene sulfide so that the impact property of polyphenylene sulfide and tensile property are lower
The mechanical property of ether.
Fiber can play the role of carrying, and high-intensitive and high-modulus possessed by glass fibre and aramid fiber itself can be used for
Stress is undertaken, when exposed to external forces, the interfacial bond of the Plastic Flow of polyphenylene sulfide and remaining composite fibre, which can be used for transmitting, answers
Power and load are bonded together fiber with dispersing stress suffered by polyphenylene sulfide, play the role of dispersing bearing capacity, from
And improve stress or load energy that polyphenylene sulfide can undertake.The tensile strength of polyphenylene sulfide, aramid fiber can be improved in glass fibre
Fiber mainly improves the impact strength of polyphenylene sulfide, can be improved simultaneously with the composite fibre that glass fibre and aramid fiber compound poly-
Both performances of diphenyl sulfide, so that the mechanical property of poly styrene polymer will not be reduced when polyphenylene sulfide and polystyrene blend
Energy.
There are many deposits for commercially available glass fibre and carbon fiber surface attachment, will affect the interface of fiber and polyphenylene sulfide
Therefore performance needs to be surface-treated it before use.It is soaked in sodium hydroxide solution remaining to remove fiber surface
The auxiliary agents such as lubricant, then impregnate in acid condition, the isopropyl in phosphate coupling agent is easy to hydrolyze ,-the POOH of generation
With very high activity, can react in a heated condition with the amino of fiber surface, so that phosphate coupling agent be connect
Branch arrives fiber surface；Long chain alkane and polyphenylene sulfide strand in coupling agent have good physical entanglement effect, to mention
The interface adhesion of high composite fibre and polyphenylene sulfide.
The anti-flammability of polystyrene can be improved in the addition of enhancing polyphenylene sulfide, while will not reduce the mechanics of polystyrene again
Performance so that styrofoam obtained is while maintaining compared with high flame retardant, and has good tensile strength and impact strong
Degree.
The present invention is further arranged to: the diameter of the glass fibre is 8-20 μm, length 3-5mm.
The present invention is further arranged to: the diameter of the aramid fiber is 10-15 μm, length 2-4mm.
The present invention is further arranged to: in the S2, prepare coupling agent solution when, by phosphate coupling agent be slowly added dropwise to
In alcohol solution, rate of addition is 1-1.5 seconds/drop.
The present invention is further arranged to: it is described to prepare raw material, in parts by weight, including 65-70 parts of polystyrene, table
Activating agent 0.5-2 parts of face, 2-15 parts of silica 1,11-14 parts of calcium carbonate, 18-22 parts of polyphenyl elastomer, dispersing agent 0.5-1.6
Part, 18-23 parts of fiber reinforcement polyphenylene sulfide.
The present invention is further arranged to: it is described to prepare raw material, in parts by weight, including 68 parts of polystyrene, surface
1.2 parts of activating agent, 4 parts of silica 1,13 parts of calcium carbonate, 20 parts of drama elastomer, 1.2 parts of dispersing agent, fiber reinforcement polyphenylene sulfide
21 parts of ether.
The present invention is further arranged to: it is polyethylene wax that the dispersing agent, which is selected,.
The present invention is further arranged to: it is dodecyl sodium sulfate that the surfactant, which is selected,.
The purpose of the present invention two is to provide a kind of preparation method of styrofoam of preventing fires, comprising the following steps:
S1: according to parts by weight, polystyrene, surfactant, silica, calcium carbonate, polyphenyl elastomer, dispersing agent are existed
At 150-165 DEG C, with the revolving speed mixing 20-35min of 1500-2000r/min, mixture A is obtained；
S2: according to parts by weight, fiber reinforcement polyphenylene sulfide being added in mixture A, and raise the temperature to 180-200 DEG C,
Revolving speed is adjusted to 2000-2500r/min, obtains final mixture；
S3: after final mixture is heated to molten condition, injection molding, natural cooling.
In conclusion advantageous effects of the invention are as follows:
1. the shortcomings that addition of polyphenyl elastomer can improve the mechanical property of polystyrene, make up its brittleness enhances polystyrene
Toughness, improve tensile strength and impact strength；
2. improving the mechanical property of polyphenylene sulfide by glass fibre and aramid fiber, reducing polyphenylene sulfide reduces polystyrene power
The enhancing polyphenylene sulfide of a possibility that learning performance, preparation has preferable anti-flammability, can play the role of in fire retardant, instead of passing
System fire retardant, reduces the pollution to environment.
Specific embodiment
Embodiment 1
A kind of fire prevention styrofoam, preparation method the following steps are included:
In parts by weight, by 60 parts of polystyrene, 0.5 part of dodecyl sodium sulfate, 8 parts of silica, 9 parts of calcium carbonate,
15 parts of polyphenyl elastomer, 0.5 part of polyethylene wax at 150 DEG C, with the revolving speed mixing 20min of 1500r/min, obtain mixture A；
14 parts of fiber reinforcement polyphenylene sulfide are added in mixture A, and raises the temperature to 180 DEG C, revolving speed is adjusted to 2000r/min, mixes
It closes uniformly, obtains final mixture, after final mixture is heated to molten condition, injection molding, natural cooling；
Wherein, enhance the preparation of polyphenylene sulfide the following steps are included:
S1: fiber tentatively infiltrates: in parts by weight, by 5 parts of glass fibre, 6 parts of aramid fiber, in mass fraction be 5%
Sodium hydroxide solution in impregnate 30min, then use distilled water flushing, then the glass fibre after cleaning be placed in aramid fiber
It is taken out after impregnating 8h in acetone soln；Wherein the diameter of glass fibre is 8 μm, length 3mm；The diameter of aramid fiber is 10 μ
M, length 2mm；
S2: configuration coupling agent solution: in parts by weight, by 7 parts of ethyl alcohol, 0.5 part of water, be uniformly mixed obtain alcohol solution,
It is added dropwise 0.2 part of phosphate coupling agent with 0.5 drop/sec of speed into alcohol solution again, and PH is adjusted to 4, is uniformly mixed and obtains
Coupling agent solution, then the glass fibre tentatively infiltrated in S1 and aramid fiber are added in coupling agent solution and impregnate 3h, it takes out,
Drying obtains composite fibre in 80 DEG C；
S3: the preparation of fiber reinforcement polyphenylene sulfide: in parts by weight, by 25 parts of polyphenylene sulfide, 5 parts of composite fibre, mixing
30min obtains fiber reinforcement polyphenylene sulfide.
Embodiment 2
A kind of fire prevention styrofoam, preparation method the following steps are included:
In parts by weight, by 68 parts of polystyrene, 1.2 parts of dodecyl sodium sulfate, 4 parts of silica 1, calcium carbonate 13
Part, 20 parts of polyphenyl elastomer, 1.2 parts of polyethylene wax at 155 DEG C, with the revolving speed mixing 25min of 1800r/min, mixed
Object A；21 parts of fiber reinforcement polyphenylene sulfide are added in mixture A, and raises the temperature to 190 DEG C, revolving speed is adjusted to 2200r/
Min is uniformly mixed, and obtains final mixture, after final mixture is heated to molten condition, injection molding, and natural cooling；
Wherein, enhance the preparation of polyphenylene sulfide the following steps are included:
S1: fiber tentatively infiltrates: in parts by weight, 8 parts of glass fibre, aramid fiber 10 are divided, in mass fraction be 7%
Sodium hydroxide solution in impregnate 40min, then use distilled water flushing, then the glass fibre after cleaning be placed in aramid fiber
It is taken out after impregnating 10h in acetone soln；Wherein the diameter of glass fibre is 15 μm, length 4mm；The diameter of aramid fiber is 12
μm, length 3mm；
S2: configuration coupling agent solution: in parts by weight, by 9 parts of ethyl alcohol, 1.4 parts of water, be uniformly mixed obtain alcohol solution,
It is added dropwise 0.8 part of phosphate coupling agent with 1 drop/sec of speed into alcohol solution again, and PH is adjusted to 4, is uniformly mixed and obtains idol
Join agent solution, then the glass fibre tentatively infiltrated in S1 and aramid fiber are added in coupling agent solution and impregnate 4h, takes out, in
Drying obtains composite fibre in 90 DEG C；
S3: the preparation of fiber reinforcement polyphenylene sulfide: in parts by weight, by 30 parts of polyphenylene sulfide, 8 parts of composite fibre, mixing
40min obtains fiber reinforcement polyphenylene sulfide.
Embodiment 3
A kind of fire prevention styrofoam, preparation method the following steps are included:
In parts by weight, by 75 parts of polystyrene, 2.0 parts of dodecyl sodium sulfate, 8 parts of silica 1, calcium carbonate 16
Part, 25 parts of polyphenyl elastomer, 1.6 parts of polyethylene wax at 165 DEG C, with the revolving speed mixing 35min of 2000r/min, mixed
Object A；26 parts of fiber reinforcement polyphenylene sulfide are added in mixture A, and raises the temperature to 200 DEG C, revolving speed is adjusted to 2500r/
Min is uniformly mixed, and obtains final mixture, after final mixture is heated to molten condition, injection molding, and natural cooling；
Wherein, enhance the preparation of polyphenylene sulfide the following steps are included:
S1: fiber tentatively infiltrates: in parts by weight, 2 parts of glass fibre, aramid fiber 15 are divided, in mass fraction be 8%
Sodium hydroxide solution in impregnate 50min, then use distilled water flushing, then the glass fibre after cleaning be placed in aramid fiber
It is taken out after impregnating 12h in acetone soln；Wherein the diameter of glass fibre is 20 μm, length 5mm；The diameter of aramid fiber is 15
μm, length 4mm；
S2: configuration coupling agent solution: in parts by weight, by 12 parts of ethyl alcohol, 2.0 parts of water, be uniformly mixed obtain alcohol solution,
1.3 parts of phosphate coupling agent are added dropwise with 2 drops/sec of speed into alcohol solution again, and PH is adjusted to 5, is uniformly mixed and obtains idol
Join agent solution, then the glass fibre tentatively infiltrated in S1 and aramid fiber are added in coupling agent solution and impregnate 5h, takes out, in
Drying obtains composite fibre in 100 DEG C；
S3: the preparation of fiber reinforcement polyphenylene sulfide: in parts by weight, by 40 parts of polyphenylene sulfide, 12 parts of composite fibre, mixing
50min obtains fiber reinforcement polyphenylene sulfide.
Embodiment 4
A kind of fire prevention styrofoam, the difference from example 2 is that, in parts by weight, preparing includes polystyrene in raw material
62 parts, 0.8 part of dodecyl sodium sulfate, 0 part of silica 1,10 parts of calcium carbonate, 17 parts of polyphenyl elastomer, polyethylene wax 0.8
Part, 16 parts of polyphenylene sulfide.
Embodiment 5
A kind of fire prevention styrofoam, the difference from example 2 is that, in parts by weight, preparing includes polystyrene in raw material
72 parts, 1.6 parts of dodecyl sodium sulfate, 7 parts of silica 1,15 parts of calcium carbonate, 24 parts of polyphenyl elastomer, polyethylene wax 1.4
Part, 24 parts of fiber reinforcement polyphenylene sulfide.
Embodiment 6
A kind of fire prevention styrofoam, the difference from example 2 is that, in parts by weight, preparing includes polystyrene in raw material
65 parts, 1.0 parts of dodecyl sodium sulfate, 2 parts of silica 1,11 parts of calcium carbonate, 18 parts of polyphenyl elastomer, polyethylene wax 1.0
Part, 18 parts of fiber reinforcement polyphenylene sulfide.
Embodiment 7
A kind of fire prevention styrofoam, the difference from example 2 is that, in parts by weight, preparing includes polystyrene in raw material
70 parts, 1.8 parts of dodecyl sodium sulfate, 5 parts of silica 1,14 parts of calcium carbonate, 22 parts of polyphenyl elastomer, polyethylene wax 1.5
Part, 18 parts of fiber reinforcement polyphenylene sulfide.
Comparative example 1
Commercially available fire prevention styrofoam.
Performance detection
Limit oxygen is carried out to fire prevention styrofoam obtained by embodiment 1-7 and commercially available fire prevention styrofoam using oxygen index (OI) tester to refer to
Number (LOI) test, the standard of test institute's reference are ASTMD2863-70；Using horizontal vertical Combustion tester, to embodiment 1-7
Obtained fire prevention styrofoam and commercially available fire prevention styrofoam carry out horizontal vertical burning (UL-94) test；GB/ according to national standards
T10801.2-2002 carries out Mechanics Performance Testing to fire prevention styrofoam obtained by embodiment 1-7 and commercially available fire prevention styrofoam；
Testing result counts in table 1.
The performance test results of 1 embodiment 1-7 of table
As seen from Table 1, fire prevention styrofoam, limit oxygen index as obtained by the experimental procedure of embodiment 1-7 can reach
28.0 or more, hence it is evident that higher than the testing result of commercially available fire prevention styrofoam；In embodiment 1-7, combustion rating can reach V-0 grades
Not, higher than the combustion rating of commercially available fire prevention styrofoam；Illustrate that the flame retardant property of polystyrene can be improved in the addition of polyphenylene sulfide, and
The pollution to environment can be also reduced while realizing flame retardant property without using conventional flame retardant；
By can be seen that in table 1, notch impact strength and tensile strength are far longer than the detection knot in comparative example 1 in embodiment 1-7
Fruit illustrates that the addition of polyphenyl elastomer can make up the brittleness of polystyrene, improves the mechanical property of polystyrene, meanwhile, glass
The modification of fiber and aramid fiber poly-p-phenylene sulfide ether can also make up the brittleness of polyphenylene sulfide itself, to reduce polyphenylene sulfide to poly-
A possibility that benzene plate Effect on Mechanical Properties；
In conclusion the anti-flammability for styrofoam of preventing fires as made from preparation method provided by the present invention is more excellent；It is maintaining
In the case where compared with high flame resistance, also there is excellent tensile strength and impact strength.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (9)
1. a kind of fire prevention styrofoam, it is characterised in that: in parts by weight, preparing raw material includes 60-75 parts of polystyrene, table
Activating agent 0.5-2.0 parts of face, 8-18 parts of silica, 9-16 parts of calcium carbonate, 15-25 parts of polyphenyl elastomer, dispersing agent 0.5-1.6
Part, 14-26 parts of fiber reinforcement polyphenylene sulfide；
Wherein, fiber reinforcement polyphenylene sulfide preparation the following steps are included:
S1: fiber tentatively infiltrates: in parts by weight, by 5-12 parts of glass fibre, 6-15 parts of aramid fiber, in mass fraction
To impregnate 30-50min in the sodium hydroxide solution of 5-8%, then use distilled water flushing, then by after cleaning glass fibre and virtue
Synthetic fibre fiber is placed in acetone soln and takes out after immersion 8-12h；
S2: configuration coupling agent solution: in parts by weight, 7-12 parts of ethyl alcohol, 0.5-2.0 parts of water is uniformly mixed and obtain alcohol water
Solution, then phosphate coupling agent 0.2-1.3 parts is added into alcohol solution, and PH is adjusted to 4-5, it is uniformly mixed and obtains coupling agent
Solution, then the glass fibre tentatively infiltrated in S1 and aramid fiber are added in coupling agent solution and impregnate 3-5h, it takes out, in
Drying obtains composite fibre in 80-100 DEG C；
S3: the preparation of fiber reinforcement polyphenylene sulfide: in parts by weight, by 25-40 parts of polyphenylene sulfide, composite fibre 5-12
Part, 30-50min is mixed, fiber reinforcement polyphenylene sulfide is obtained.
2. a kind of fire prevention styrofoam according to claim 1, it is characterised in that: the diameter of the glass fibre is 8-20 μ
M, length 3-5mm.
3. a kind of fire prevention styrofoam according to claim 1, it is characterised in that: the diameter of the aramid fiber is 10-15 μ
M, length 2-4mm.
4. a kind of fire prevention styrofoam according to claim 1, it is characterised in that: in the S2, when preparing coupling agent solution,
Phosphate coupling agent is slowly added dropwise into alcohol solution, rate of addition is 1-1.5 seconds/drop.
5. a kind of fire prevention styrofoam according to claim 1, it is characterised in that: it is described to prepare raw material, according to parts by weight
Meter, including 65-70 parts of polystyrene, 0.5-2 parts of surfactant, 2-15 parts of silica 1,11-14 parts of calcium carbonate, polyphenyl bullet
Property 18-22 parts of body, 0.5-1.6 parts of dispersing agent, 18-23 parts of fiber reinforcement polyphenylene sulfide.
6. a kind of fire prevention styrofoam according to claim 2, it is characterised in that: it is described to prepare raw material, according to parts by weight
Meter, including 68 parts of polystyrene, 1.2 parts of surfactant, 4 parts of silica 1,13 parts of calcium carbonate, polyphenyl elastomer 20 part, point
1.2 parts of powder, 21 parts of fiber reinforcement polyphenylene sulfide.
7. a kind of fire prevention styrofoam according to claim 3, it is characterised in that: it is polyethylene wax that the dispersing agent, which is selected,.
8. a kind of fire prevention styrofoam according to claim 1, it is characterised in that: it is dodecane that the surfactant, which is selected,
Base sodium sulfonate.
9. it is according to any one of claims 1 to 8 it is a kind of prevent fires styrofoam preparation method, it is characterised in that: including with
Lower step:
S1: according to parts by weight, polystyrene, surfactant, silica, calcium carbonate, polyphenyl elastomer, dispersing agent are existed
At 150-165 DEG C, with the revolving speed mixing 20-35min of 1500-2000r/min, mixture A is obtained；
S2: according to parts by weight, fiber reinforcement polyphenylene sulfide being added in mixture A, and raise the temperature to 180-200 DEG C,
Revolving speed is adjusted to 2000-2500r/min, obtains final mixture；
S3: after final mixture is heated to molten condition, injection molding, natural cooling.
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| CN201910563724.XA CN110183788A (en) | 2019-06-26 | 2019-06-26 | A kind of fire prevention styrofoam and its production technology |
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| CN201910563724.XA CN110183788A (en) | 2019-06-26 | 2019-06-26 | A kind of fire prevention styrofoam and its production technology |
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| GB2607025A (en) * | 2021-05-21 | 2022-11-30 | Creative Retail Display Ltd | A mouldable oven proof article |
| CN118388895A (en) * | 2024-06-26 | 2024-07-26 | 河北信泰新材料有限公司 | High-strength low-thermal conductivity polystyrene and preparation method and application thereof |
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