CN1200016C - Antiflaming type expansible polystyrene granule and producing method thereof - Google Patents

Antiflaming type expansible polystyrene granule and producing method thereof Download PDF

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Publication number
CN1200016C
CN1200016C CN 02138594 CN02138594A CN1200016C CN 1200016 C CN1200016 C CN 1200016C CN 02138594 CN02138594 CN 02138594 CN 02138594 A CN02138594 A CN 02138594A CN 1200016 C CN1200016 C CN 1200016C
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parts
portions
afterwards
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reactor
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CN1500815A (en
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华若中
许铭
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Wuxi Xingda Foam Plastic New Materials Co ltd
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Abstract

The present invention discloses a fire resisting type expansible polystyrene granules and a producing method thereof. The fire resisting type expansible polystyrene granules can be used for producing building materials and packing materials. The polystyrene granules are formed by the steps that: 90 to 110 portions of styrene, 1.2 to 4.0 portions of tricalcium phosphate, 0.08 to 0.20 portions of buffering agent, 0.04 to 0.10 portions of monostearin, 0.10 to 0.30 portions of tetrasodium pyrophosphate, 0.30 to 0.50 portions of benzoyl peroxide, 0.40 to 0.60 portions of dicumyl peroxide, 5.6 to 7.8 portions of bromine and 6.2 to 8.4 portions of pentane are used as raw materials; the raw materials are mixed, heated, stirred, etc. The fire resisting type expansible polystyrene granules produced by the recipe and the producing method of the present invention have the advantages of high yield and good benefits.

Description

Fire-retardant expandable polystyrene particle and its production method
Technical field
The present invention relates to a kind of granules of polystyrene and production method thereof that has flame retardant properties and expandable energy, can be used for producing building materials and wrapping material.
Background technology
Because the flame retardant type Expandable Polystyrene (EPS) has premium properties, is applied to building material industry increasingly extensively.Such as, with the sheet material that the flame retardant type Expandable Polystyrene (EPS) is made, can be used as novel color steel building materials plate, motorway basis place mat and gymnasium building materials etc.And the use density of flame retardant type Expandable Polystyrene (EPS) product aspect building materials is 14~20kg/m 3, correspondingly, be 0.9~1.60mm with regard to the particle diameter that needs its feed particles.
At present, the production of fire-retarding foamable polystyrene grain mostly adopts wilkinite/gelatin as dispersion agent, makes the product produce have only 25~50% to reach effective size of grain, and promptly product percent of pass has only 25~50%, yields poorly, benefit is not high.
Summary of the invention
The object of the present invention is to provide a kind of fire-retarding foamable polystyrene grain.This fire-retarding foamable polystyrene grain, output height, profitable.
Another object of the present invention provides a kind of method of production fire-retarding foamable polystyrene grain.
Above-mentioned purpose of the present invention is realized by following technical solution:
Fire-retarding foamable polystyrene grain of the present invention, make by the raw material of following parts by weight:
90~110 parts of vinylbenzene, 1.2~4.0 parts in calcium phosphate, 0.08~0.20 part of buffer reagent, 0.04~0.10 part of glyceryl monostearate, 0.10~0.30 part of trisodium phosphate, 0.30~0.50 part of benzoyl peroxide, 0.40~0.60 part of dicumyl peroxide, 5.6~7.8 parts of bromines, 6.2~8.4 parts of pentanes.Buffer reagent wherein is sodium hydroxide or calcium hydroxide.
The method of production fire-retarding foamable polystyrene grain may further comprise the steps:
(1) adding weight part in reactor is 100~120 parts de-salted water;
(2) when evenly stirring, adding weight part successively is 1.2~4.0 parts calcium phosphate, 0.08~0.20 part buffer reagent, 0.04~0.10 part glyceryl monostearate and 0.10~0.30 part trisodium phosphate, continues to stir 3~8 minutes;
(3) afterwards, adding weight part successively is 90~110 parts vinylbenzene, 0.30~0.50 part of benzoyl peroxide, 0.40~0.60 part dicumyl peroxide and 5.6~7.8 parts bromine;
(4) afterwards, begin reactor is heated according to 0.8~1.2 ℃/minute heat-up rate; When temperature rose to 85~95 ℃, constant temperature kept 360~420 minutes, made material form the particle with a certain size distribution;
(5) afterwards, adding weight part is 6.2~8.4 parts pentane, and continues reactor is heated; When reacting kettle inner pressure reaches 0.9~1.0Mpa, kept 300~420 minutes; Then, allow it naturally cool to normal temperature;
(6) last, elimination moisture obtains fire-retarding foamable polystyrene grain of the present invention.
Take such scheme, have the following advantages:
Because in the fire-retarding foamable polystyrene grain prescription of the present invention, adopt calcium phosphate, glyceryl monostearate and trisodium phosphate as dispersion agent, carry out compatibility with inorganic salt calcium phosphate and trisodium phosphate and tensio-active agent glyceryl monostearate, make the fire-retarding foamable polystyrene grain qualification rate of producing up to 70~90%, be higher than the product percent of pass that employing wilkinite/gelatin is produced as dispersion agent far away, thereby output and benefit all are greatly improved.
Embodiment
First embodiment:
Choose 90 parts vinylbenzene, 3.8 parts calcium phosphate, 0.15 part buffer reagent, 0.04 part glyceryl monostearate, 0.15 part trisodium phosphate, 0.50 part benzoyl peroxide, 0.40 part dicumyl peroxide, 6.5 parts bromine and 8.3 parts pentane, stand-by.Wherein, each raw material umber of choosing is weight part.
De-salted water with 100 (weight) part adds in the reactor earlier, when evenly stirring, adds calcium phosphate, buffer reagent, glyceryl monostearate and trisodium phosphate successively, continues stirring 5 minutes.
Afterwards, add vinylbenzene, benzoyl peroxide, dicumyl peroxide and bromine more successively.
Afterwards, begin reactor is heated according to 1.2 ℃/minute heat-up rates, when temperature rose to 85 ℃, constant temperature kept 420 minutes under this temperature, made material form the particle with a certain size distribution.
Afterwards, add pentane, and continue reactor is heated.When reacting kettle inner pressure reaches 0.9Mpa, under this pressure, kept 380 minutes.Then, allow it naturally cool to normal temperature.
At last, after filtration, elimination moisture wherein obtains fire-retarding foamable polystyrene grain of the present invention.
Second embodiment:
Choose 100 parts vinylbenzene, 2.0 parts calcium phosphate, 0.20 part buffer reagent, 0.07 part glyceryl monostearate, 0.30 part trisodium phosphate, 0.30 part benzoyl peroxide, 0.50 part dicumyl peroxide, 7.8 parts bromine and 6.2 parts pentane, stand-by.Wherein, each raw material umber of choosing is weight part.
De-salted water with 110 (weight) part adds in the reactor earlier, when evenly stirring, adds calcium phosphate, buffer reagent, glyceryl monostearate and trisodium phosphate successively, continues stirring 8 minutes.
Afterwards, add vinylbenzene, benzoyl peroxide, dicumyl peroxide and bromine more successively.
Afterwards, begin reactor is heated according to 0.8 ℃/minute heat-up rate, when temperature rose to 90 ℃, constant temperature kept 390 minutes under this temperature, made material form the particle with a certain size distribution.
Afterwards, add pentane, and continue reactor is heated.When reacting kettle inner pressure reaches 0.95Mpa, under this pressure, kept 310 minutes.Then, allow it naturally cool to normal temperature.
At last, after filtration, elimination moisture wherein obtains fire-retarding foamable polystyrene grain of the present invention.
The 3rd embodiment:
Choose 110 parts vinylbenzene, 1.2 parts calcium phosphate, 0.08 part buffer reagent, 0.10 part glyceryl monostearate, 0.10 part trisodium phosphate, 0.25 part benzoyl peroxide, 0.60 part dicumyl peroxide, 5.6 parts bromine and 7.5 parts pentane, stand-by.Wherein, each raw material umber of choosing is weight part.
De-salted water with 120 (weight) part adds in the reactor earlier, when evenly stirring, adds calcium phosphate, buffer reagent, glyceryl monostearate and trisodium phosphate successively, continues stirring 3 minutes.
Afterwards, add vinylbenzene, benzoyl peroxide, dicumyl peroxide and bromine more successively.
Afterwards, begin reactor is heated according to 1.0 ℃/minute heat-up rates, when temperature rose to 95 ℃, constant temperature kept 360 minutes under this temperature, made material form the particle with a certain size distribution.
Afterwards, add pentane, and continue reactor is heated.When reacting kettle inner pressure reaches 1.0Mpa, under this pressure, kept 420 minutes.Then, allow it naturally cool to normal temperature.
At last, after filtration, elimination moisture wherein obtains fire-retarding foamable polystyrene grain of the present invention.
Buffer reagent among above-mentioned three embodiment can be a sodium hydroxide, also can be calcium hydroxide.
In the foregoing description, every part of raw material is equal in weight in every part of weight of used de-salted water and the prescription.

Claims (2)

1. fire-retarding foamable polystyrene grain is characterized in that being made by the raw material of following parts by weight:
90~110 parts of vinylbenzene, 1.2~4.0 parts in calcium phosphate, 0.08~0.20 part of buffer reagent, 0.04~0.10 part of glyceryl monostearate, 0.10~0.30 part of trisodium phosphate, 0.30~0.50 part of benzoyl peroxide, 0.40~0.60 part of dicumyl peroxide, 5.6~7.8 parts of bromines, 6.2~8.4 parts of pentanes; Buffer reagent wherein is sodium hydroxide or calcium hydroxide.
2. the method for the described fire-retarding foamable polystyrene grain of production claim 1 is characterized in that may further comprise the steps:
(1) adding weight part in reactor is 100~120 parts de-salted water;
(2) when evenly stirring, adding weight part successively is 1.2~4.0 parts calcium phosphate, 0.08~0.20 part buffer reagent, 0.04~0.10 part glyceryl monostearate and 0.10~0.30 part trisodium phosphate, continues to stir 3~8 minutes;
(3) afterwards, adding weight part successively is 90~110 parts vinylbenzene, 0.30~0.50 part benzoyl peroxide, 0.40~0.60 part dicumyl peroxide and 5.6~7.8 parts bromine;
(4) afterwards, begin reactor is heated according to 0.8~1.2 ℃/minute heat-up rate; When temperature rose to 85~95 ℃, constant temperature kept 360~420 minutes, made material form the particle with a certain size distribution;
(5) afterwards, adding weight part is 6.2~8.4 parts pentane, and continues reactor is heated; When reacting kettle inner pressure reaches 0.9~1.0Mpa, kept 300~420 minutes; Then, allow it naturally cool to normal temperature;
(6) last, elimination moisture obtains fire-retarding foamable polystyrene grain of the present invention.
CN 02138594 2002-11-15 2002-11-15 Antiflaming type expansible polystyrene granule and producing method thereof Expired - Lifetime CN1200016C (en)

Priority Applications (1)

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CN 02138594 CN1200016C (en) 2002-11-15 2002-11-15 Antiflaming type expansible polystyrene granule and producing method thereof

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Application Number Priority Date Filing Date Title
CN 02138594 CN1200016C (en) 2002-11-15 2002-11-15 Antiflaming type expansible polystyrene granule and producing method thereof

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CN1200016C true CN1200016C (en) 2005-05-04

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Publication number Priority date Publication date Assignee Title
CN100443538C (en) * 2006-07-28 2008-12-17 许其昌 Plastic sand
CN104610564B (en) * 2008-01-30 2018-05-11 积水化成品工业株式会社 Expandable polystyrene resin beads and its manufacture method and expanded moldings
CN101768285B (en) * 2009-07-16 2012-03-21 新疆蓝山屯河新材料有限公司 Expandable polystyrene product and production method thereof
CN104059185A (en) * 2014-06-18 2014-09-24 安徽圣源橡塑科技有限公司 Flame-retardant polystyrene composite material and preparation method thereof
CN104629204A (en) * 2015-02-13 2015-05-20 芜湖市伟华泡塑有限公司 Preparation method of modified expanded polystyrene
CN108164849A (en) * 2017-12-06 2018-06-15 黄家月 A kind of esp foamed damping packing materials and preparation method thereof

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Assignee: JIANGSU CHENGDA PETROCHEMICAL INDUSTRY Co.,Ltd.

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