CN107629345A - A kind of graphite polystyrene board - Google Patents
A kind of graphite polystyrene board Download PDFInfo
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- CN107629345A CN107629345A CN201710881352.6A CN201710881352A CN107629345A CN 107629345 A CN107629345 A CN 107629345A CN 201710881352 A CN201710881352 A CN 201710881352A CN 107629345 A CN107629345 A CN 107629345A
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- powder
- graphite
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- polystyrene board
- modified graphene
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Abstract
The invention discloses a kind of graphite polystyrene board; it is related to building material technical field; blending surface modification is carried out to expanded graphite powder and acrylic amide modified graphene using coupling agent; obtain mixed powder; then the mixed powder after above-mentioned processing is mixed with polystyrene resin beads; stirred at a temperature of 150 158 DEG C; the particle produced with double screw extruder extrusion; the particle produced is blended at a temperature of 118 120 DEG C with etherification starch and ethanol be stirred be well mixed after add extrusion forming in extruding machine, produce；Graphite polystyrene board excellent combination property prepared by the present invention, especially compressive strength, thermal conductivity factor, dimensional stability and oxygen index (OI) are greatly enhanced.
Description
Technical field
The invention belongs to building material technical field, and in particular to a kind of graphite polystyrene board.
Background technology
With economic and society development, higher requirement is proposed to sustainable development.Energy-conservation and environmental protection have become
The common recognition of the mankind, it is energy-saving to turn into one of mankind's practical action.The raising of living standards of the people, building trade are vigorously sent out
Exhibition, existing house and newly-built house consequently also increase to the demand of high performance heat-insulating heat-preserving material, simple organic polymer
Material and inorganic material can not meet the needs of market.By organic and inorganic materials carry out it is compound the two learn from other's strong points to offset one's weaknesses, from
And the fire-retardant composite heat insulatant thermal insulation material that forming properties are excellent.
The fire retardant commonly used in high polymer material has halogenated flame retardant, phosphorus flame retardant, inorganic combustion inhibitor and expandable flame retardant
Agent etc..Due to environmental protection and security needs, halogenated flame retardant gradually fades out market.High barrier, heat resistance and anti-flammability
Inorganic material is combined with polystyrene resin, not only increases the thermal insulation and anti-flammability of material, while improves material
Other performances, can preferably meet the needs of market.
Graphite is microwaved, can form it into expanded graphite.Expanded graphite runs into high temperature and is expanded into original body rapidly
Long-pending hundreds times, it is widely applied to construction industry and is used for producing fire retardant and fireproof agent, there is good fire-retardant and fire line
Energy.
Graphite polystyrene board be by after the heated prefoam of expandability graphite granules of polystyrene, in a mold hot briquetting and
The obtained graphite polystyrol plastic foam plate material with hole-closing structure, is widely used in building inside and outside wall thermal insulation field, modern
At home and abroad it have developed rapidly over year.
The main raw material(s) of common graphite polystyrene board is although that the burning behavior class such as polystyrene, graphite, pentane can
To reach B1 levels, but oxygen index (OI) is not high, and is thermoplastic, it is impossible to is subjected to toasting for a long time, it is impossible to meet relevant criterion
It is required that.
The content of the invention
The purpose of the present invention is to be directed to the problem of existing, there is provided a kind of graphite polystyrene board.
The present invention is achieved by the following technical solutions：
A kind of graphite polystyrene board, blending surface is carried out to expanded graphite powder and acrylic amide modified graphene using coupling agent and changed
Property, mixed powder is obtained, then mixes the mixed powder after above-mentioned processing with polystyrene resin beads, at 150-158 DEG C
At a temperature of stir, with the particle produced of double screw extruder extrusion, the particle produced is mixed with etherification starch and ethanol
It is stirred at a temperature of 118-120 DEG C after being well mixed and adds extrusion forming in extruding machine, is produced；
The expanded graphite powder and acrylic amide modified graphene mixing quality ratio are 15-20:1-3；
Mixed powder and polystyrene resin beads the mixing quality ratio is 50-60:4-6；
The particle is 40-50 with etherification starch and ethanol mixing quality ratio:5-8:4-6.
Further, the size of the expanded graphite powder is 600-700 mesh.
Further, the acrylic amide modified graphene preparation method is：
（1）Graphite oxide is pressed into 40g：250mL ratio uses ultrasonication 15min after being dissolved in distilled water；Using
The sodium hydroxide solution regulation pH value that mass fraction is 10% is 9.5；The suberic acid and 0.12% for adding distillation water quality 0.05% is received
Rice aluminum oxide, is stirred 30min, is then filtered, cleaned using clear water, and 5h is dried under 120 DEG C of temperature conditionss and is produced；
（2）By step（1）Graphite oxide after middle processing presses 0.1g with 1,4- dioxane:After 80mL ratio mixing, use
Ultrasonication 15min, is then heated to 40 DEG C, and titanium tetrachloride 2mL is added dropwise, and stirs 2 hours under 500r/min rotating speeds, then
In the acrylamide of addition graphite oxide 5%, 90 DEG C are heated to, is incubated 1 hour, then carries out being heated to backflow 5 hours, addition
Into water, wash, filtering, be dried, produce at 100 DEG C.
Further, the coupling agent is titanate coupling agent.
Further, it is described that blending surface is carried out to expanded graphite powder and acrylic amide modified graphene using coupling agent
It is modified as：Coupling agent is configured to the coupling agent solution that mass concentration is 1%, by proportioning by expanded graphite powder and acrylamide
Modified graphene is uniformly admixed together, and hot pressing 10min is carried out at 200 DEG C, hot pressing pressure 1.2MPa, then carries out powder again
It is broken, 600 mesh sieves are crossed, obtain powder, by obtained powder and coupling agent solution by 120g：300mL ratio uniform is mixed into one
Rise, 30min is incubated at 60 DEG C, pH to 10.0 is then adjusted using saturation ammoniacal liquor, continue insulation 2 hours, then filter, use
Deionized water is cleaned to neutrality, drying, produces mixed powder.
Further, etherification starch is CMS.
The present invention has advantages below compared with prior art：The present invention is carried out by using acrylamide to graphene oxide
It is modified, the interference of active group can be effectively excluded, the increase of its structure aperture, obtains the more preferable graphene of pore structure, together
When, modified graphene significantly improves to the adsorptivity of organic matter and solid particle so that graphite polystyrene board produces when burning
Cigarette effectively can be absorbed by acrylic amide modified graphene, considerably reduce graphite polystyrene board burning caused by cigarette
Gas, blending surface modification is carried out to expanded graphite powder and acrylic amide modified graphene by using coupling agent, can be effective
Dispersing uniformity in polystyrene resin system of improvement expanded graphite powder and acrylic amide modified graphene and compatible
Property, the comprehensive mechanical property of graphite polystyrene board can be effectively improved, by adding the combined use of etherification starch and ethanol,
During burning, fireproof effect can be played by being filled in the skeleton of carbonization；Graphite particle, which can play, simultaneously absorbs and reflects heat
Effect, to the heat of resin matrix internal transmission when reducing burning, resin and acrylamide change in graphite polystyrene board of the invention
Property graphene coated in granules of polystyrene surface, granules of polystyrene is formed into isolation cabin of preventing fires one by one, in ignition
When, resin carbonation forms skeleton, and enhancing skeleton and heat-insulated effect, graphite are wherein played in acrylic amide modified graphene filling
Grain then further reduces the transmission of heat, plays good flame retardant effect.Meanwhile resin carbonation forms the skeleton of high porosity,
And volume is basically unchanged, closed pore air layer therein can play a part of reducing heat conduction and convection current, can protect internal unburned
The granules of polystyrene of burning does not trickle, and has self-extinguishment function.
Embodiment
Embodiment 1
A kind of graphite polystyrene board, blending surface is carried out to expanded graphite powder and acrylic amide modified graphene using coupling agent and changed
Property, mixed powder is obtained, then mixes the mixed powder after above-mentioned processing with polystyrene resin beads, in 150 DEG C of temperature
Under stir, with the particle produced of double screw extruder extrusion, the particle produced and etherification starch and ethanol are blended in 118
It is stirred at a temperature of DEG C after being well mixed and adds extrusion forming in extruding machine, is produced；
The expanded graphite powder and acrylic amide modified graphene mixing quality ratio are 15:1；
Mixed powder and polystyrene resin beads the mixing quality ratio is 50:4；
The particle is 40 with etherification starch and ethanol mixing quality ratio:5:4.
Further, the size of the expanded graphite powder is 600 mesh.
Further, the acrylic amide modified graphene preparation method is：
（1）Graphite oxide is pressed into 40g：250mL ratio uses ultrasonication 15min after being dissolved in distilled water；Using
The sodium hydroxide solution regulation pH value that mass fraction is 10% is 9.5；The suberic acid and 0.12% for adding distillation water quality 0.05% is received
Rice aluminum oxide, is stirred 30min, is then filtered, cleaned using clear water, and 5h is dried under 120 DEG C of temperature conditionss and is produced；
（2）By step（1）Graphite oxide after middle processing presses 0.1g with 1,4- dioxane:After 80mL ratio mixing, use
Ultrasonication 15min, is then heated to 40 DEG C, and titanium tetrachloride 2mL is added dropwise, and stirs 2 hours under 500r/min rotating speeds, then
In the acrylamide of addition graphite oxide 5%, 90 DEG C are heated to, is incubated 1 hour, then carries out being heated to backflow 5 hours, addition
Into water, wash, filtering, be dried, produce at 100 DEG C.
Further, the coupling agent is titanate coupling agent.
Further, it is described that blending surface is carried out to expanded graphite powder and acrylic amide modified graphene using coupling agent
It is modified as：Coupling agent is configured to the coupling agent solution that mass concentration is 1%, by proportioning by expanded graphite powder and acrylamide
Modified graphene is uniformly admixed together, and hot pressing 10min is carried out at 200 DEG C, hot pressing pressure 1.2MPa, then carries out powder again
It is broken, 600 mesh sieves are crossed, obtain powder, by obtained powder and coupling agent solution by 120g：300mL ratio uniform is mixed into one
Rise, 30min is incubated at 60 DEG C, pH to 10.0 is then adjusted using saturation ammoniacal liquor, continue insulation 2 hours, then filter, use
Deionized water is cleaned to neutrality, drying, produces mixed powder.
Further, etherification starch is CMS.
Embodiment 2
A kind of graphite polystyrene board, blending surface is carried out to expanded graphite powder and acrylic amide modified graphene using coupling agent and changed
Property, mixed powder is obtained, then mixes the mixed powder after above-mentioned processing with polystyrene resin beads, in 158 DEG C of temperature
Under stir, with the particle produced of double screw extruder extrusion, the particle produced and etherification starch and ethanol are blended in 120
It is stirred at a temperature of DEG C after being well mixed and adds extrusion forming in extruding machine, is produced；
The expanded graphite powder and acrylic amide modified graphene mixing quality ratio are 20: 3；
Mixed powder and polystyrene resin beads the mixing quality ratio is 60: 6；
The particle is 50 with etherification starch and ethanol mixing quality ratio: 8: 6.
Further, the size of the expanded graphite powder is 700 mesh.
Further, the acrylic amide modified graphene preparation method is：
（1）Graphite oxide is pressed into 40g：250mL ratio uses ultrasonication 15min after being dissolved in distilled water；Using
The sodium hydroxide solution regulation pH value that mass fraction is 10% is 9.5；The suberic acid and 0.12% for adding distillation water quality 0.05% is received
Rice aluminum oxide, is stirred 30min, is then filtered, cleaned using clear water, and 5h is dried under 120 DEG C of temperature conditionss and is produced；
（2）By step（1）Graphite oxide after middle processing presses 0.1g with 1,4- dioxane:After 80mL ratio mixing, use
Ultrasonication 15min, is then heated to 40 DEG C, and titanium tetrachloride 2mL is added dropwise, and stirs 2 hours under 500r/min rotating speeds, then
In the acrylamide of addition graphite oxide 5%, 90 DEG C are heated to, is incubated 1 hour, then carries out being heated to backflow 5 hours, addition
Into water, wash, filtering, be dried, produce at 100 DEG C.
Further, the coupling agent is titanate coupling agent.
Further, it is described that blending surface is carried out to expanded graphite powder and acrylic amide modified graphene using coupling agent
It is modified as：Coupling agent is configured to the coupling agent solution that mass concentration is 1%, by proportioning by expanded graphite powder and acrylamide
Modified graphene is uniformly admixed together, and hot pressing 10min is carried out at 200 DEG C, hot pressing pressure 1.2MPa, then carries out powder again
It is broken, 600 mesh sieves are crossed, obtain powder, by obtained powder and coupling agent solution by 120g：300mL ratio uniform is mixed into one
Rise, 30min is incubated at 60 DEG C, pH to 10.0 is then adjusted using saturation ammoniacal liquor, continue insulation 2 hours, then filter, use
Deionized water is cleaned to neutrality, drying, produces mixed powder.
Further, etherification starch is CMS.
Embodiment 3
A kind of graphite polystyrene board, blending surface is carried out to expanded graphite powder and acrylic amide modified graphene using coupling agent and changed
Property, mixed powder is obtained, then mixes the mixed powder after above-mentioned processing with polystyrene resin beads, in 152 DEG C of temperature
Under stir, with the particle produced of double screw extruder extrusion, the particle produced and etherification starch and ethanol are blended in 119
It is stirred at a temperature of DEG C after being well mixed and adds extrusion forming in extruding machine, is produced；
The expanded graphite powder and acrylic amide modified graphene mixing quality ratio are 18:2；
Mixed powder and polystyrene resin beads the mixing quality ratio is 55:5；
The particle is 42 with etherification starch and ethanol mixing quality ratio:6:5.
Further, the size of the expanded graphite powder is 650 mesh.
Further, the acrylic amide modified graphene preparation method is：
（1）Graphite oxide is pressed into 40g：250mL ratio uses ultrasonication 15min after being dissolved in distilled water；Using
The sodium hydroxide solution regulation pH value that mass fraction is 10% is 9.5；The suberic acid and 0.12% for adding distillation water quality 0.05% is received
Rice aluminum oxide, is stirred 30min, is then filtered, cleaned using clear water, and 5h is dried under 120 DEG C of temperature conditionss and is produced；
（2）By step（1）Graphite oxide after middle processing presses 0.1g with 1,4- dioxane:After 80mL ratio mixing, use
Ultrasonication 15min, is then heated to 40 DEG C, and titanium tetrachloride 2mL is added dropwise, and stirs 2 hours under 500r/min rotating speeds, then
In the acrylamide of addition graphite oxide 5%, 90 DEG C are heated to, is incubated 1 hour, then carries out being heated to backflow 5 hours, addition
Into water, wash, filtering, be dried, produce at 100 DEG C.
Further, the coupling agent is titanate coupling agent.
Further, it is described that blending surface is carried out to expanded graphite powder and acrylic amide modified graphene using coupling agent
It is modified as：Coupling agent is configured to the coupling agent solution that mass concentration is 1%, by proportioning by expanded graphite powder and acrylamide
Modified graphene is uniformly admixed together, and hot pressing 10min is carried out at 200 DEG C, hot pressing pressure 1.2MPa, then carries out powder again
It is broken, 600 mesh sieves are crossed, obtain powder, by obtained powder and coupling agent solution by 120g：300mL ratio uniform is mixed into one
Rise, 30min is incubated at 60 DEG C, pH to 10.0 is then adjusted using saturation ammoniacal liquor, continue insulation 2 hours, then filter, use
Deionized water is cleaned to neutrality, drying, produces mixed powder.
Further, etherification starch is CMS.
Comparative example 1：Differed only in embodiment 1 and do not add acrylic amide modified graphene.
Comparative example 2：Differed only in embodiment 1 and acrylic amide modified graphene is replaced with into common untreated graphite
Alkene.
Comparative example 3：Differed only in embodiment 1 and etherification starch is replaced with into talcum powder.
Experiment：
Graphite polystyrene board prepared by embodiment and comparative example is tested according to country or professional standard, compressive strength presses GB/
T8813 is tested；Thermal conductivity factor is tested by GB/T10294；Dimensional stability is tested by GB/T8811；Oxygen index (OI) is pressed
GB8624-2012 is tested, and test result is shown in Table 1；
Table 1
| Compressive strength MPa | Thermal conductivity factor w/mk | Dimensional stability % | Oxygen index (OI) % | |
| Embodiment 1 | 0.028 | 0.022 | 0.08 | 46 |
| Embodiment 2 | 0.027 | 0.022 | 0.07 | 47 |
| Embodiment 3 | 0.028 | 0.023 | 0.08 | 46 |
| Comparative example 1 | 0.022 | 0.031 | 0.15 | 36 |
| Comparative example 2 | 0.023 | 0.028 | 0.13 | 38 |
| Comparative example 3 | 0.024 | 0.024 | 0.11 | 42 |
| Commercially available graphite polystyrene board | 0.08-0.10 | 0.036-0.038 | 0.20-0.25 | 30-32 |
As can be seen from Table 1, the graphite polystyrene board excellent combination property for preparing of the present invention, especially compressive strength, thermal conductivity factor,
Dimensional stability and oxygen index (OI) are greatly enhanced.
Claims (6)
1. a kind of graphite polystyrene board, it is characterised in that using coupling agent to expanded graphite powder and acrylic amide modified graphene
Blending surface modification is carried out, mixed powder is obtained, then mixes the mixed powder after above-mentioned processing with polystyrene resin beads
Close, stirred at a temperature of 150-158 DEG C, the particle produced with double screw extruder extrusion, by the particle produced and etherificate
Starch and ethanol be stirred at a temperature of being blended in 118-120 DEG C it is well mixed after add extrusion forming in extruding machine, produce；
The expanded graphite powder and acrylic amide modified graphene mixing quality ratio are 15-20:1-3；
Mixed powder and polystyrene resin beads the mixing quality ratio is 50-60:4-6；
The particle is 40-50 with etherification starch and ethanol mixing quality ratio:5-8:4-6.
A kind of 2. preparation method of expansion graphite polystyrene board according to claim 1, it is characterised in that the expanded graphite
The size of powder is 600-700 mesh.
A kind of 3. preparation method of expansion graphite polystyrene board according to claim 1, it is characterised in that the acrylamide
Modified graphene preparation method is：
（1）Graphite oxide is pressed into 40g：250mL ratio uses ultrasonication 15min after being dissolved in distilled water；Using
The sodium hydroxide solution regulation pH value that mass fraction is 10% is 9.5；The suberic acid and 0.12% for adding distillation water quality 0.05% is received
Rice aluminum oxide, is stirred 30min, is then filtered, cleaned using clear water, and 5h is dried under 120 DEG C of temperature conditionss and is produced；
（2）By step（1）Graphite oxide after middle processing presses 0.1g with 1,4- dioxane:After 80mL ratio mixing, use
Ultrasonication 15min, is then heated to 40 DEG C, and titanium tetrachloride 2mL is added dropwise, and stirs 2 hours under 500r/min rotating speeds, then
In the acrylamide of addition graphite oxide 5%, 90 DEG C are heated to, is incubated 1 hour, then carries out being heated to backflow 5 hours, addition
Into water, wash, filtering, be dried, produce at 100 DEG C.
4. the preparation method of a kind of expansion graphite polystyrene board according to claim 1, it is characterised in that the coupling agent is
Titanate coupling agent.
5. the preparation method of a kind of expansion graphite polystyrene board according to Claims 2 or 3 or 4, it is characterised in that described to adopt
Blending surface is carried out with coupling agent to expanded graphite powder and acrylic amide modified graphene to be modified as：Coupling agent is configured to matter
The coupling agent solution that concentration is 1% is measured, expanded graphite powder and acrylic amide modified graphene uniform are mixed into one by proportioning
Rise, hot pressing 10min carried out at 200 DEG C, hot pressing pressure 1.2MPa, is then crushed again, cross 600 mesh sieves, obtain powder,
By obtained powder and coupling agent solution by 120g：300mL ratio uniform is admixed together, 30min is incubated at 60 DEG C, so
Afterwards using saturation ammoniacal liquor regulation pH to 10.0, continue insulation 2 hours, then filter, cleaned to neutrality, dried using deionized water
It is dry, produce mixed powder.
6. the preparation method of a kind of expansion graphite polystyrene board according to claim 1, it is characterised in that etherification starch is carboxylic
Methyl starch.
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| CN201710881352.6A CN107629345A (en) | 2017-09-26 | 2017-09-26 | A kind of graphite polystyrene board |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113045336A (en) * | 2021-04-28 | 2021-06-29 | 苏州中材非金属矿工业设计研究院有限公司 | Flame-retardant EPS composite foam containing expandable graphite and preparation method thereof |
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| CN106543475A (en) * | 2016-10-31 | 2017-03-29 | 无锡云亭石墨烯技术有限公司 | A kind of preparation of modified graphene and its application in expandable polystyrene |
| CN106633458A (en) * | 2016-12-29 | 2017-05-10 | 吉林省云亭节能技术有限公司 | Preparation method of low-heat-conductivity and flame-retardant graphene expanding polystyrene board |
| CN106752116A (en) * | 2016-11-15 | 2017-05-31 | 吉林省云亭节能技术有限公司 | The preparation method and modified graphene oxide EPS of modified graphene oxide mold the preparation method of styrofoam |
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2017
- 2017-09-26 CN CN201710881352.6A patent/CN107629345A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102492232A (en) * | 2011-12-08 | 2012-06-13 | 山西中环绿科环境工程项目管理有限公司 | Preparation method of expansion graphite polystyrene board |
| CN106543475A (en) * | 2016-10-31 | 2017-03-29 | 无锡云亭石墨烯技术有限公司 | A kind of preparation of modified graphene and its application in expandable polystyrene |
| CN106752116A (en) * | 2016-11-15 | 2017-05-31 | 吉林省云亭节能技术有限公司 | The preparation method and modified graphene oxide EPS of modified graphene oxide mold the preparation method of styrofoam |
| CN106633458A (en) * | 2016-12-29 | 2017-05-10 | 吉林省云亭节能技术有限公司 | Preparation method of low-heat-conductivity and flame-retardant graphene expanding polystyrene board |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113045336A (en) * | 2021-04-28 | 2021-06-29 | 苏州中材非金属矿工业设计研究院有限公司 | Flame-retardant EPS composite foam containing expandable graphite and preparation method thereof |
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