CN114426746A - Preparation method of polystyrene heat-insulating material - Google Patents
Preparation method of polystyrene heat-insulating material Download PDFInfo
- Publication number
- CN114426746A CN114426746A CN202011187524.8A CN202011187524A CN114426746A CN 114426746 A CN114426746 A CN 114426746A CN 202011187524 A CN202011187524 A CN 202011187524A CN 114426746 A CN114426746 A CN 114426746A
- Authority
- CN
- China
- Prior art keywords
- mixed material
- polymerization reaction
- temperature
- polystyrene
- reactor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004793 Polystyrene Substances 0.000 title claims abstract description 46
- 229920002223 polystyrene Polymers 0.000 title claims abstract description 46
- 239000011810 insulating material Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 88
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 31
- 239000003063 flame retardant Substances 0.000 claims abstract description 29
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000002994 raw material Substances 0.000 claims abstract description 26
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000003999 initiator Substances 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 22
- 239000012774 insulation material Substances 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 5
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical group C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 3
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- 239000004794 expanded polystyrene Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/06—Polystyrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F112/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F112/02—Monomers containing only one unsaturated aliphatic radical
- C08F112/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F112/06—Hydrocarbons
- C08F112/08—Styrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
Abstract
The invention provides a preparation method of a polystyrene heat-insulating material, which comprises the following steps: s1, preheating raw materials containing styrene, ethylbenzene, an initiator and a flame retardant to obtain a first mixed material; s2, performing prepolymerization reaction on the first mixed material to obtain a second mixed material; s3, carrying out a first polymerization reaction on the second mixed material to obtain a third mixed material; s4, carrying out a second polymerization reaction on the third mixed material to obtain a fourth mixed material; s5, performing a third polymerization reaction on the fourth mixed material to obtain a fifth mixed material containing a polystyrene heat-insulating material; and optionally S6, performing devolatilization treatment on the fifth mixed material to obtain the polystyrene heat-insulating material. The polystyrene heat-insulating material prepared by the preparation method has the characteristics of good tensile strength, high melt tension and high thermal deformation temperature.
Description
Technical Field
The invention relates to the field of chemical industry, in particular to a preparation method of a polystyrene heat-insulating material.
Background
An extrusion molding type polystyrene insulation board is a hard foam insulation board which is formed by continuous extrusion foaming through a special process. The extruded polystyrene heat-insulating board is an environment-friendly heat-insulating material with low heat conductivity, high compression resistance, moisture resistance, air impermeability, water resistance, light weight, corrosion resistance, long service life and other beneficial properties. Has been widely applied to the fields of wall heat preservation, heat preservation of plane concrete roofs and steel structure roofs, low-temperature storage, moisture prevention and heat preservation of the ground, parking platforms, airport runways, expressways and the like, ground expansion control and the like. The polystyrene heat-insulating material not only needs to have good mechanical property and processability, but also has the characteristics of high temperature resistance and flame retardance.
At present, in order to achieve the effects of high temperature resistance and flame retardance, the flame retardant is basically added into common expanded polystyrene, and the method relates to secondary processing and increases the cost.
In order to solve the problems, the extruded polystyrene heat-insulating material obtained by adopting a one-step polymerization method is a key problem to be solved in the development of polystyrene products.
Disclosure of Invention
In view of the problems in the prior art, an object of the present invention is to provide a method for preparing a polystyrene thermal insulation material, wherein the polystyrene thermal insulation material prepared by the method has the characteristics of good tensile strength, high melt tension and high heat distortion temperature.
The second purpose of the invention is to provide a polystyrene thermal insulation material corresponding to the first purpose.
The invention also aims to provide application of the polystyrene thermal insulation material corresponding to the aim.
In order to achieve one of the purposes, the technical scheme adopted by the invention is as follows:
a preparation method of a polystyrene thermal insulation material comprises the following steps:
s1, preheating raw materials containing styrene, ethylbenzene, an initiator and a flame retardant to obtain a first mixed material;
s2, performing prepolymerization reaction on the first mixed material to obtain a second mixed material;
s3, carrying out a first polymerization reaction on the second mixed material to obtain a third mixed material;
s4, carrying out a second polymerization reaction on the third mixed material to obtain a fourth mixed material;
s5, performing a third polymerization reaction on the fourth mixed material to obtain a fifth mixed material containing a polystyrene heat-insulating material; and
optionally, S6, performing devolatilization treatment on the fifth mixed material to obtain the polystyrene heat-insulating material.
The inventor of the application finds that the polystyrene heat-insulating material with good tensile strength, high melt tension and high thermal deformation temperature can be obtained by using styrene, ethylbenzene, an initiator and a flame retardant as raw materials and adopting the processes of preheating, prepolymerization and three-step polymerization.
In some preferred embodiments of the present invention, in step S1, the content of the styrene in the raw material is 85 wt% to 95 wt%.
According to some embodiments of the invention, in step S1, the styrene content in the feedstock is 88 wt% to 95 wt%.
According to some embodiments of the invention, in step S1, the styrene content in the feedstock is between 88 wt% and 92 wt%.
In some preferred embodiments of the present invention, in step S1, the ethylbenzene content in the feedstock is 1 wt% to 15 wt%.
In some preferred embodiments of the present invention, in step S1, the ethylbenzene content in the feedstock is 5 wt% to 15 wt%.
In some preferred embodiments of the present invention, in step S1, the ethylbenzene content in the feedstock is 6 wt% to 15 wt%.
In some preferred embodiments of the present invention, in step S1, the ethylbenzene content in the feedstock is 6 wt% to 12 wt%.
In some preferred embodiments of the present invention, in step S1, the ethylbenzene content in the feedstock is 6 wt% to 10 wt%.
In some preferred embodiments of the present invention, in step S1, the content of the initiator in the raw material is 100ppm to 500 ppm.
In some preferred embodiments of the present invention, in step S1, the content of the initiator in the raw material is 200ppm to 400 ppm.
In some preferred embodiments of the present invention, in step S1, the content of the flame retardant in the raw material is 100ppm to 2000 ppm.
In some preferred embodiments of the present invention, in step S1, the content of the flame retardant in the raw material is 500ppm to 2000 ppm.
In some preferred embodiments of the present invention, in step S1, the content of the flame retardant in the raw material is 800ppm to 2000 ppm.
In some preferred embodiments of the present invention, in step S1, the content of the flame retardant in the raw material is 1000ppm to 2000 ppm.
In some preferred embodiments of the present invention, in step S1, the content of the flame retardant in the raw material is 1100ppm to 2000 ppm.
In some preferred embodiments of the present invention, in step S1, the content of the flame retardant in the raw material is 1100ppm to 1800 ppm.
In some preferred embodiments of the present invention, in step S1, the content of the flame retardant in the raw material is 1100ppm to 1600 ppm.
In some preferred embodiments of the present invention, in step S1, the initiator is dicumyl peroxide.
According to the invention, in the system of the invention, the optimum initiation is obtained with dicumyl peroxide as initiator, compared with other types of initiator.
In some preferred embodiments of the present invention, in step S1, the flame retardant is a cage silsesquioxane.
According to the invention, in the system of the invention, cage type silsesquioxane is adopted as the flame retardant to obtain the optimal flame retardant effect compared with other types of flame retardants.
According to the present invention, the cage-type silsesquioxane employs a product generally sold on the market.
In some preferred embodiments of the present invention, the temperature of the preheating treatment in step S1 is 80 to 90 ℃, preferably 82 to 88 ℃.
In some preferred embodiments of the present invention, in step S1, the time of the preheating treatment is 1min to 60min, preferably 10min to 15 min.
In some preferred embodiments of the present invention, the temperature of the prepolymerization reaction in step S2 is 110 to 120 ℃, preferably 112 to 118 ℃.
In some preferred embodiments of the present invention, in step S2, the time for the prepolymerization reaction is 1min to 60min, preferably 10min to 15 min.
In some preferred embodiments of the present invention, the liquid level is controlled to 70% to 80% in step S2.
In some preferred embodiments of the present invention, the temperature of the first polymerization reaction in step S3 is 120 to 130 ℃, preferably 122 to 128 ℃.
In some preferred embodiments of the present invention, in step S3, the time of the first polymerization reaction is 10min to 90min, preferably 45min to 60 min.
In some preferred embodiments of the present invention, in step S4, the temperature of the second polymerization reaction is 140 ℃ to 150 ℃, preferably 142 ℃ to 148 ℃.
In some preferred embodiments of the present invention, in step S4, the time for the second polymerization reaction is 10min to 90min, preferably 45min to 60 min.
In some preferred embodiments of the present invention, the temperature of the third polymerization reaction in step S5 is 150 ℃ to 160 ℃, preferably 162 ℃ to 168 ℃.
In some preferred embodiments of the present invention, in step S5, the time for the third polymerization reaction is 10min to 90min, preferably 45min to 60 min.
In some preferred embodiments of the present invention, the temperature of the first polymerization reaction is less than the temperature of the second polymerization reaction, preferably the temperature of the first polymerization reaction is 18 ℃ to 30 ℃ less, preferably 20 ℃ to 25 ℃ less than the temperature of the second polymerization reaction.
In some preferred embodiments of the present invention, the temperature of the second polymerization reaction is less than the temperature of the third polymerization reaction, preferably, the temperature of the second polymerization reaction is 5 ℃ to 15 ℃ less than the temperature of the third polymerization reaction, preferably 8 ℃ to 12 ℃ less.
In some preferred embodiments of the present invention, the pressure of the devolatilization process in step S6 is between-10 KPa and 0KPa, preferably between-8 KPa and-2 KPa.
In some preferred embodiments of the present invention, the temperature of the devolatilization process in step S6 is 230 ℃ to 250 ℃, preferably 235 ℃ to 245 ℃.
In some preferred embodiments of the present invention, the devolatilization process time in step S6 is 10min to 90min, preferably 45min to 60 min.
In order to achieve the second purpose, the invention adopts the following technical scheme:
the polystyrene heat-insulating material prepared by the preparation method.
In some preferred embodiments of the present invention, the polystyrene insulation has a heat distortion temperature of 100 ℃ or higher, preferably 100 to 120 ℃.
In order to achieve the third purpose, the technical scheme adopted by the invention is as follows:
the polystyrene heat-insulating material prepared by the preparation method or the application of the polystyrene heat-insulating material as a raw material for preparing an extruded polystyrene heat-insulating plate.
The invention has the beneficial effects that: because the optimal component proportion and process production conditions are adopted in the production process, the obtained polystyrene heat-insulating material has good tensile strength and high heat distortion temperature which is up to 104 ℃, can be directly used for extrusion molding of polystyrene heat-insulating plates, reduces intermediate links, saves cost and has strong practicability.
Detailed Description
The present invention will be described in detail below with reference to examples, but the scope of the present invention is not limited to the following description.
The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available from commercial sources.
In the following embodiments:
melt flow index is determined with reference to the standard ASTM D1238;
tensile yield strength is determined with reference to standard ASTM D638;
the unnotched cantilever beam impact strength is measured according to the standard ASTM D256;
heat distortion temperature is determined with reference to the ASTM D648 standard.
In the following embodiments, unless otherwise specified, dicumyl peroxide is used as the initiator, and amino-substituted cage-type silsesquioxane (OAPS) is used as the flame retardant.
Example 1
The method comprises the following steps: raw material materials comprising styrene, ethylbenzene, an initiator and a flame retardant (wherein the content of the ethylbenzene is 8%, the content of the initiator is 300ppm, the content of the flame retardant is 1500ppm, and the balance is styrene) are introduced into a preheater at a flow rate of 15t/h, the temperature of the preheater is controlled to be 82 ℃, the residence time of the raw material materials in the preheater is controlled to be about 13min, and a first mixed material is obtained from an outlet of the preheater.
Step two: and (3) introducing the first mixed material obtained in the step (I) into a prepolymerization reactor, controlling the temperature of the prepolymerization reactor to be 112 ℃, controlling the residence time of the first mixed material in the prepolymerization reactor to be about 10min, controlling the liquid level in the prepolymerization reactor to be 73%, and obtaining a second mixed material from the outlet of the prepolymerization reactor.
Step three: and (3) introducing the second mixed material obtained in the step (II) into the first reactor, controlling the temperature of the first reactor to be 125 ℃ and the residence time of the second mixed material in the first reactor to be about 45min, and obtaining a third mixed material from the outlet of the first reactor.
Step four: and (3) introducing the third mixed material obtained in the step (three) into a second reactor, controlling the temperature of the second reactor to be 145 ℃ and the residence time of the third mixed material in the second reactor to be about 45min, and obtaining a fourth mixed material from an outlet of the second reactor.
Step five: and (3) introducing the fourth mixed material obtained in the step four into a third reactor, controlling the temperature of the third reactor to be 155 ℃ and the retention time of the fourth mixed material in the third reactor to be about 45min, and obtaining a fifth mixed material from an outlet of the third reactor.
Step six: and (4) introducing the fifth mixed material obtained in the fifth step into a recovering device to remove unreacted raw materials, and then extruding and granulating to obtain the polystyrene heat-insulating material, wherein the pressure of the recovering device is controlled to be-5 KPa, the temperature is 235 ℃, and the retention time of the fifth mixed material in the recovering device is about 45 min.
The melt flow index, tensile yield strength, IZOD notched impact strength, heat distortion temperature and melt tension of the resulting polystyrene insulation were measured and are shown in table 1.
Example 2
The method comprises the following steps: raw material materials comprising styrene, ethylbenzene, an initiator and a flame retardant (wherein the content of the ethylbenzene is 8%, the content of the initiator is 350ppm, the content of the flame retardant is 1200ppm, and the balance is styrene) are introduced into a preheater at a flow rate of 15t/h, the temperature of the preheater is controlled to be 86 ℃, the residence time of the raw material materials in the preheater is controlled to be about 13min, and a first mixed material is obtained from an outlet of the preheater.
Step two: and (3) introducing the first mixed material obtained in the step (I) into a prepolymerization reactor, controlling the temperature of the prepolymerization reactor to be 118 ℃ and the residence time of the first mixed material in the prepolymerization reactor to be about 12min, controlling the liquid level in the prepolymerization reactor to be 72%, and obtaining a second mixed material from the outlet of the prepolymerization reactor.
Step three: and (3) introducing the second mixed material obtained in the step (II) into the first reactor, controlling the temperature of the first reactor to be 123 ℃ and the residence time of the second mixed material in the first reactor to be about 45min, and obtaining a third mixed material from the outlet of the first reactor.
Step four: and (3) introducing the third mixed material obtained in the step (three) into a second reactor, controlling the temperature of the second reactor to be 146 ℃ and the residence time of the third mixed material in the second reactor to be about 50min, and obtaining a fourth mixed material from an outlet of the second reactor.
Step five: and (3) introducing the fourth mixed material obtained in the step four into a third reactor, controlling the temperature of the third reactor to be 155 ℃ and the retention time of the fourth mixed material in the third reactor to be about 50min, and obtaining a fifth mixed material from an outlet of the third reactor.
Step six: and (4) introducing the fifth mixed material obtained in the fifth step into a recovering device to remove unreacted raw materials, and then extruding and granulating to obtain the polystyrene heat-insulating material, wherein the pressure of the recovering device is controlled to be-3 KPa, the temperature is controlled to be 237 ℃, and the retention time of the fifth mixed material in the recovering device is about 45 min.
The melt flow index, tensile yield strength, IZOD notched impact strength, heat distortion temperature and melt tension of the resulting polystyrene insulation were measured and are shown in table 1.
Example 3
The method comprises the following steps: raw material materials comprising styrene, ethylbenzene, an initiator and a flame retardant (wherein the content of the ethylbenzene is 10%, the content of the initiator is 250ppm, the content of the flame retardant is 1300ppm, and the balance is styrene) are introduced into a preheater at a flow rate of 16t/h, the temperature of the preheater is controlled to be 85 ℃, the residence time of the raw material materials in the preheater is controlled to be about 13min, and a first mixed material is obtained from an outlet of the preheater.
Step two: and (3) introducing the first mixed material obtained in the step (I) into a prepolymerization reactor, controlling the temperature of the prepolymerization reactor to be 114 ℃, controlling the residence time of the first mixed material in the prepolymerization reactor to be about 12min, controlling the liquid level in the prepolymerization reactor to be 74%, and obtaining a second mixed material from the outlet of the prepolymerization reactor.
Step three: and (3) introducing the second mixed material obtained in the step (II) into the first reactor, controlling the temperature of the first reactor to be 123 ℃ and the residence time of the second mixed material in the first reactor to be about 48min, and obtaining a third mixed material from the outlet of the first reactor.
Step four: and (4) introducing the third mixed material obtained in the step three into a second reactor, controlling the temperature of the second reactor to be 148 ℃ and the residence time of the third mixed material in the second reactor to be about 55min, and obtaining a fourth mixed material from an outlet of the second reactor.
Step five: and (3) introducing the fourth mixed material obtained in the step four into a third reactor, controlling the temperature of the third reactor to be 152 ℃ and the residence time of the fourth mixed material in the third reactor to be about 55min, and obtaining a fifth mixed material from an outlet of the third reactor.
Step six: and (4) introducing the fifth mixed material obtained in the fifth step into a recovering device to remove unreacted raw materials, and then extruding and granulating to obtain the polystyrene heat-insulating material, wherein the pressure of the recovering device is controlled to be-6 KPa, the temperature is controlled to be 240 ℃, and the residence time of the fifth mixed material in the recovering device is about 50 min.
The melt flow index, tensile yield strength, IZOD notched impact strength, heat distortion temperature and melt tension of the resulting polystyrene insulation were measured and are shown in table 1.
Example 4
Example 4 was set up essentially the same as example 1, except that magnesium hydroxide was used instead of the flame retardant in example 1.
The resulting polystyrene material was tested and the results are shown in table 1.
Example 5
Example 5 was set up essentially the same as example 1, except that antimony trioxide was used instead of the flame retardant in example 1.
The resulting polystyrene material was tested and the results are shown in table 1.
Example 6
Example 6 was set up essentially the same as example 1, except that t-butyl peroxide was used in place of the initiator in example 1.
The resulting polystyrene material was tested and the results are shown in table 1.
Example 7
Example 7 was set up essentially the same as example 1, except that benzoyl peroxide was used instead of the initiator in example 1.
The resulting polystyrene material was tested and the results are shown in table 1.
Example 8
Example 8 was set up essentially the same as example 1, except that the amount of flame retardant was 500 ppm.
The resulting polystyrene material was tested and the results are shown in table 1.
Example 9
Example 9 was set up essentially the same as example 1, except that the amount of flame retardant was 3000 ppm.
The resulting polystyrene material was tested and the results are shown in table 1.
TABLE 1
It should be noted that the above-mentioned embodiments are only for explaining the present invention, and do not constitute any limitation to the present invention. The present invention has been described with reference to exemplary embodiments, but the words which have been used herein are words of description and illustration, rather than words of limitation. The invention can be modified, as prescribed, within the scope of the claims and without departing from the scope and spirit of the invention. Although the invention has been described herein with reference to particular means, materials and embodiments, the invention is not intended to be limited to the particulars disclosed herein, but rather extends to all other methods and applications having the same functionality.
Claims (10)
1. A preparation method of a polystyrene thermal insulation material comprises the following steps:
s1, preheating raw materials containing styrene, ethylbenzene, an initiator and a flame retardant to obtain a first mixed material;
s2, performing prepolymerization reaction on the first mixed material to obtain a second mixed material;
s3, carrying out a first polymerization reaction on the second mixed material to obtain a third mixed material;
s4, carrying out a second polymerization reaction on the third mixed material to obtain a fourth mixed material;
s5, performing a third polymerization reaction on the fourth mixed material to obtain a fifth mixed material containing a polystyrene heat-insulating material; and
optionally, S6, performing devolatilization treatment on the fifth mixed material to obtain the polystyrene heat-insulating material.
2. The method according to claim 1, wherein in step S1, the styrene content in the raw material is 85 wt% to 95 wt%; the content of the ethylbenzene is 1 wt% -15 wt%; the content of the initiator is 100 ppm-500 ppm; the content of the flame retardant is 100ppm to 2000 ppm;
preferably, the initiator is dicumyl peroxide; and/or the flame retardant is a cage type silsesquioxane.
3. The method according to claim 1 or 2, wherein the temperature of the preheating treatment in step S1 is 80 ℃ to 90 ℃, preferably 82 ℃ to 88 ℃; and/or the time of the preheating treatment is 1min to 60min, preferably 10min to 15 min.
4. The method according to any one of claims 1 to 3, wherein the prepolymerization reaction is carried out at a temperature of 110 ℃ to 120 ℃, preferably 112 ℃ to 118 ℃ in step S2; and/or the time of the prepolymerization reaction is 1min to 60min, preferably 10min to 15 min; and/or the liquid level is controlled to be 70-80%.
5. The method according to any one of claims 1 to 4, wherein the temperature of the first polymerization reaction in step S3 is 120 ℃ to 130 ℃, preferably 122 ℃ to 128 ℃; and/or the time of the first polymerization reaction is 10min to 90min, preferably 45min to 60 min.
6. The method according to any one of claims 1 to 5, wherein the temperature of the second polymerization reaction is 140 ℃ to 150 ℃, preferably 142 ℃ to 148 ℃ in step S4; and/or the time of the second polymerization reaction is 10min to 90min, preferably 45min to 60 min.
7. The method according to any one of claims 1 to 6, wherein the temperature of the third polymerization reaction is 150 ℃ to 160 ℃, preferably 162 ℃ to 168 ℃ in step S5; and/or the time of the third polymerization reaction is 10min to 90min, preferably 45min to 60 min.
8. The production method according to any one of claims 1 to 7, wherein in step S6, the pressure of the devolatilization process is from-10 KPa to 0KPa, preferably from-8 KPa to-2 KPa; and/or the temperature of the devolatilization treatment is 230 ℃ to 250 ℃, preferably 235 ℃ to 245 ℃; and/or the time of the devolatilization treatment is from 10min to 90min, preferably from 45min to 60 min.
9. Polystyrene insulation material obtained by the method according to any one of claims 1 to 8, preferably having a heat distortion temperature above 100 ℃, preferably between 100 ℃ and 120 ℃.
10. Use of the polystyrene insulation material prepared by the preparation method according to any one of claims 1 to 8 or the polystyrene insulation material according to claim 9 as a raw material for preparing an extruded polystyrene insulation board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011187524.8A CN114426746A (en) | 2020-10-29 | 2020-10-29 | Preparation method of polystyrene heat-insulating material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011187524.8A CN114426746A (en) | 2020-10-29 | 2020-10-29 | Preparation method of polystyrene heat-insulating material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114426746A true CN114426746A (en) | 2022-05-03 |
Family
ID=81310121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011187524.8A Pending CN114426746A (en) | 2020-10-29 | 2020-10-29 | Preparation method of polystyrene heat-insulating material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114426746A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5349012A (en) * | 1990-03-02 | 1994-09-20 | Nippon Steel Chemical Co., Ltd. | Process for preparing rubber-modified styrene resins |
| JP2000080131A (en) * | 1998-09-03 | 2000-03-21 | Daicel Chem Ind Ltd | Preparation of rubber-modified styrenic resin |
| WO2000032662A1 (en) * | 1998-12-01 | 2000-06-08 | Basf Aktiengesellschaft | Highly shock-resistant polystyrene injection molding die |
| KR20050015877A (en) * | 2003-08-11 | 2005-02-21 | 제일모직주식회사 | Continuous Process for Preparing High Impact Polystyrene Resin |
| KR20050030262A (en) * | 2003-09-25 | 2005-03-30 | 제일모직주식회사 | Continuous process of preparing high-flow and high-gloss rubber-modified styrenic resin |
| KR20050030263A (en) * | 2003-09-25 | 2005-03-30 | 제일모직주식회사 | Continous polymerization process of rubber-modified styrenic resin with good falling dart impact |
| KR20050030690A (en) * | 2003-09-25 | 2005-03-31 | 제일모직주식회사 | Continuous bulk process of preparing rubber-modified styrenic resin |
| CN102675550A (en) * | 2012-05-10 | 2012-09-19 | 华东理工大学 | High-impact-resistance polystyrene polymer and preparation method thereof |
| US20120270052A1 (en) * | 2009-11-27 | 2012-10-25 | Basf Se | Coating composition for foam particles |
| CN109385021A (en) * | 2017-08-04 | 2019-02-26 | 广东生益科技股份有限公司 | A kind of compositions of thermosetting resin and prepreg and metal-clad laminate using its production |
-
2020
- 2020-10-29 CN CN202011187524.8A patent/CN114426746A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5349012A (en) * | 1990-03-02 | 1994-09-20 | Nippon Steel Chemical Co., Ltd. | Process for preparing rubber-modified styrene resins |
| JP2000080131A (en) * | 1998-09-03 | 2000-03-21 | Daicel Chem Ind Ltd | Preparation of rubber-modified styrenic resin |
| WO2000032662A1 (en) * | 1998-12-01 | 2000-06-08 | Basf Aktiengesellschaft | Highly shock-resistant polystyrene injection molding die |
| KR20050015877A (en) * | 2003-08-11 | 2005-02-21 | 제일모직주식회사 | Continuous Process for Preparing High Impact Polystyrene Resin |
| KR20050030262A (en) * | 2003-09-25 | 2005-03-30 | 제일모직주식회사 | Continuous process of preparing high-flow and high-gloss rubber-modified styrenic resin |
| KR20050030263A (en) * | 2003-09-25 | 2005-03-30 | 제일모직주식회사 | Continous polymerization process of rubber-modified styrenic resin with good falling dart impact |
| KR20050030690A (en) * | 2003-09-25 | 2005-03-31 | 제일모직주식회사 | Continuous bulk process of preparing rubber-modified styrenic resin |
| US20120270052A1 (en) * | 2009-11-27 | 2012-10-25 | Basf Se | Coating composition for foam particles |
| CN102675550A (en) * | 2012-05-10 | 2012-09-19 | 华东理工大学 | High-impact-resistance polystyrene polymer and preparation method thereof |
| CN109385021A (en) * | 2017-08-04 | 2019-02-26 | 广东生益科技股份有限公司 | A kind of compositions of thermosetting resin and prepreg and metal-clad laminate using its production |
Non-Patent Citations (4)
| Title |
|---|
| 何小芳;刘玉飞;代鑫;胡蕾阳;樊斌斌;胡平;: "POSS及其改性聚合物的研究进展", 上海塑料, no. 03, pages 1 - 5 * |
| 何小芳;胡蕾阳;樊斌斌;代鑫;胡平;: "POSS改性聚合物复合材料阻燃性及热稳定性研究进展", 工程塑料应用, no. 06, pages 95 - 97 * |
| 吴英;申明霞;韩永芹;: "聚苯乙烯的阻燃剂及其阻燃性能", 粘接, no. 08, pages 69 - 72 * |
| 王文兴编著: "《工业催化》", 31 December 1978, 化学工业出版社, pages: 516 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1194033C (en) | Expandable styrene polymers containing carbon particles | |
| US7754817B2 (en) | Low temperature initiators for improving the rubber phase volume of HIPS formulations | |
| US4178327A (en) | Ar-halo-ar(t-alkyl)styrenes and polymers thereof | |
| CN108055849B (en) | Method for preparing vinyl chloride copolymer and vinyl chloride copolymer prepared by the same | |
| US3580830A (en) | Preparation of xanthate terminated polymers | |
| US6972311B2 (en) | Optimizing polystyrene in the presence of additives | |
| KR19980063580A (en) | Rubbery polymer and its manufacturing method | |
| CN114426746A (en) | Preparation method of polystyrene heat-insulating material | |
| RU2605093C2 (en) | Method of producing polystyrene, having high melt flow index | |
| CN101665555A (en) | Method for preparing continuous bulk of flame retardant and highly impact resistant acrylonitrile-chlorinated polyethylene-styrene resin | |
| ES2397965T3 (en) | Semi-continuous integrated process for the production of high impact vinyl aromatic (co) polymers by anionic / sequence radical polymerization | |
| US3267178A (en) | Method of making interpolymers of monovinyl aromatic compounds, methyl methacrylate and rubbery butadiene polymers | |
| NO149038B (en) | FIREFIGHTING MIXTURE | |
| CN108659153B (en) | General purpose polystyrene with improved impact strength and method for preparing same | |
| JP3289239B2 (en) | Resin with stress crack resistance properties due to improved thermoforming and environment | |
| Scheirs | Historical overview of styrenic polymers | |
| KR20060069428A (en) | Styrenic resin composition and articles produced therefrom | |
| JP3336686B2 (en) | Impact resistant styrenic resin composition and method for producing the same | |
| US20110054123A1 (en) | High Impact Polymers and Methods of Making and Using Same | |
| EP4025615A1 (en) | Process for producing vinyl aromatic (co)polymer incorporating post-consumer and/or post-industrial recycled polystyrene | |
| JPH09143322A (en) | Styrene resin composition | |
| US20040230003A1 (en) | Transparent rubber-modified monovinylidene aromatic resin | |
| JPH10218953A (en) | Rubbery polymer, its production, new anionic polymerization initiator and resin composition | |
| JPH04356501A (en) | Production of copolymer excellent in heat resistance | |
| KR20000055398A (en) | Thermoplastic resin composition with good chemical resistance and sheet extraction characteristics |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |