CN104788709A - Preparation method for super-size composite rubber-modified polystyrene resin - Google Patents
Preparation method for super-size composite rubber-modified polystyrene resin Download PDFInfo
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- CN104788709A CN104788709A CN201510181999.9A CN201510181999A CN104788709A CN 104788709 A CN104788709 A CN 104788709A CN 201510181999 A CN201510181999 A CN 201510181999A CN 104788709 A CN104788709 A CN 104788709A
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Abstract
The application of the invention provides a preparation method for a super-size composite rubber-modified polystyrene resin. The preparation method comprises the following steps: 1) screening polystyrene particles, without a foaming agent, as polystyrene seeds for later use; 2) feeding deionized water, the polystyrene seeds and a dispersing agent into a reaction still in sequence, then slowly adding a polystyrene monomer, adding an initiator and a plasticizing agent at the same time, adding the foaming agent after the completion of the low temperature reaction, and performing high temperature polymerization reaction to obtain a polymer; 3), after the reaction still is cooled, transferring the material into an intermediate tank to adjust the pH value to be 4-6; 4), washing, dehydrating, drying and screening the polymer in sequence to obtain the super-size expandable polystyrene resin material with the required particle diameter. The super-size composite rubber-modified polystyrene resin provided by the invention has the advantages of being super-large and uniform in particle diameter, complete in appearance, stable and uniform in quality, and the like.
Description
Technical field
The application belongs to field of material technology, particularly relates to a kind of preparation method of super-size compounded rubber modified polystyrene resin.
Background technology
Expandable Polystyrene (EPS) (being called for short EPS), it is widely used in the fields such as packaging, building materials, fishery, artwork, in the middle of these Application Areass, the scope of required EPS grain diameter is generally 0.5 ~ 2.0mm, but drift for fishery, Treatment of Industrial Water, deep-sea detecting base and ocean the raw material that the Application Areass such as thing then need super-size, such as particle diameter is at the Large stone Expandable Polystyrene (EPS) of more than 2.5mm, and requiring uniform particle sizes, steady quality is homogeneous.Because the EPS raw material preparing super-size exists above-mentioned technical difficulty, thus cause its price to exceed a lot than general EPS raw material, therefore, if develop a kind of uniform particles, outward appearance is satisfactory, steady quality is homogeneous, can meet the EPS of the super-size of different field customer demand will have wide market outlook, for enterprise creates huge economic benefit.
In prior art, utilize the Expandable Polystyrene (EPS) that suspension polymerization is produced, wherein also have a small amount of macrobead particle diameter raw material to produce, but, its defect is: the output of the Large stone EPS that each reactor is produced is considerably less, and quality is very uneven, the EPS raw material of Large stone prepared in suspension polymerization process often occurs the quality problems of flat particle or particle and distortion particle cannot meeting the requirement of client.
Summary of the invention
The object of the present invention is to provide a kind of preparation method of super-size compounded rubber modified polystyrene resin, to overcome deficiency of the prior art.
For achieving the above object, the invention provides following technical scheme:
The embodiment of the present application discloses a kind of preparation method of super-size compounded rubber modified polystyrene resin, comprises step:
1) grain diameter, filtered out not containing whipping agent is that the granules of polystyrene of 0.2 ~ 1.0mm is for subsequent use as polystyrene seed;
2), deionized water, polystyrene seed, dispersion agent are dropped in reactor successively, then 55 ~ 70 DEG C are warming up to, slowly add polystyrene monomers again, add initiator and softening agent simultaneously, continue to be warming up to 90 ~ 95 DEG C and carry out low temperature polymerization reaction, after low-temp reaction terminates, then add whipping agent, and be warming up to 150 DEG C and carry out high temperature polymerization reaction, obtain polymkeric substance;
3), question response still cooling after, material is transferred to medial launder, and in medial launder, add salt acid for adjusting pH value is 5 ~ 6;
4), polymkeric substance is obtained successively after the operation of washing, dehydration, drying, screening the super-size expandable polystyrene resin raw material of required size.
Preferably, in the preparation method of above-mentioned super-size compounded rubber modified polystyrene resin, also comprise step 5): polystyrene resin raw material is put into mixing machine, then adds surface coating agent and antistatic agent, after stirring, packaging obtains finished product.
Preferably, in the preparation method of above-mentioned super-size compounded rubber modified polystyrene resin, described step 2) in, the joining day of polystyrene monomers is 3 ~ 8 hours.
Compared with prior art, the invention has the advantages that: super-size compounded rubber modified polystyrene resin of the present invention, have that particle diameter super large is even, outward appearance is satisfactory, the equal first-class advantage of steady quality, by introducing the rubber grain of different structure form and grain size in polystyrene resin, make compounded rubber modified polystyrene resin possess good resistance to impact shock and surface gloss simultaneously.
Embodiment
The present invention is described further by the following example: according to following embodiment, the present invention may be better understood.But those skilled in the art will readily understand, concrete material ratio, processing condition and result thereof described by embodiment only for illustration of the present invention, and should can not limit the present invention described in detail in claims yet.
In the present embodiment, the preparation method of super-size compounded rubber modified polystyrene resin, comprises step:
1) grain diameter filtered out not containing whipping agent is that the granules of polystyrene of 0.2 ~ 1.0mm is for subsequent use as polystyrene seed.
2) deionized water, polystyrene seed, dispersion agent are dropped in reactor successively, then 55 ~ 70 DEG C are warming up to, slowly add polystyrene monomers again, adding initiator and softening agent simultaneously, continue to be warming up to 90 ~ 95 DEG C and carry out low temperature polymerization reaction, is 3 ~ 8 hours by the joining day of polystyrene monomers, after low-temp reaction terminates, add whipping agent again, and be warming up to 150 DEG C and carry out high temperature polymerization reaction, obtain polymkeric substance.
3), after the cooling of question response still, material is transferred to medial launder, and in medial launder, add salt acid for adjusting pH value is 5 ~ 6.
4) polymkeric substance is obtained successively after the operation of washing, dehydration, drying, screening the super-size expandable polystyrene resin raw material of required size.
5) polystyrene resin raw material is put into mixing machine by packaging final prod, then adds surface coating agent and antistatic agent, and after stirring, packaging obtains finished product.
Finally, also it should be noted that, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.
Claims (3)
1. a preparation method for super-size compounded rubber modified polystyrene resin, is characterized in that, comprises step:
1) grain diameter, filtered out not containing whipping agent is that the granules of polystyrene of 0.2 ~ 1.0mm is for subsequent use as polystyrene seed;
2), deionized water, polystyrene seed, dispersion agent are dropped in reactor successively, then 55 ~ 70 DEG C are warming up to, slowly add polystyrene monomers again, add initiator and softening agent simultaneously, continue to be warming up to 90 ~ 95 DEG C and carry out low temperature polymerization reaction, after low-temp reaction terminates, then add whipping agent, and be warming up to 150 DEG C and carry out high temperature polymerization reaction, obtain polymkeric substance;
3), question response still cooling after, material is transferred to medial launder, and in medial launder, add salt acid for adjusting pH value is 5 ~ 6;
4), polymkeric substance is obtained successively after the operation of washing, dehydration, drying, screening the super-size expandable polystyrene resin raw material of required size.
2. the preparation method of super-size compounded rubber modified polystyrene resin according to claim 1, it is characterized in that: also comprise step 5): polystyrene resin raw material is put into mixing machine, then surface coating agent and antistatic agent is added, after stirring, packaging obtains finished product.
3. the preparation method of super-size compounded rubber modified polystyrene resin according to claim 1, is characterized in that: described step 2) in, the joining day of polystyrene monomers is 3 ~ 8 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510181999.9A CN104788709A (en) | 2015-04-17 | 2015-04-17 | Preparation method for super-size composite rubber-modified polystyrene resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510181999.9A CN104788709A (en) | 2015-04-17 | 2015-04-17 | Preparation method for super-size composite rubber-modified polystyrene resin |
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| CN104788709A true CN104788709A (en) | 2015-07-22 |
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| CN201510181999.9A Pending CN104788709A (en) | 2015-04-17 | 2015-04-17 | Preparation method for super-size composite rubber-modified polystyrene resin |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059913A (en) * | 1990-03-22 | 1992-04-01 | 罗姆和哈斯公司 | Granularity can evenly be controlled at the particulate manufacture method of 1 to 50 micrometer range |
| CN1118666A (en) * | 1994-09-16 | 1996-03-20 | 成桂田 | Longevity wheat flour and its making method |
| CN1352658A (en) * | 1999-04-09 | 2002-06-05 | 聚合物系统有限公司 | Preparation of polymer particles |
| US7217762B1 (en) * | 1999-04-09 | 2007-05-15 | Invitrogen Corporation | Process for the preparation of monodisperse polymer particles |
| CN102911317A (en) * | 2012-09-29 | 2013-02-06 | 东莞新长桥塑料有限公司 | Expandable polystyrene resin with ultra-large particle size and method for preparing same |
-
2015
- 2015-04-17 CN CN201510181999.9A patent/CN104788709A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059913A (en) * | 1990-03-22 | 1992-04-01 | 罗姆和哈斯公司 | Granularity can evenly be controlled at the particulate manufacture method of 1 to 50 micrometer range |
| CN1118666A (en) * | 1994-09-16 | 1996-03-20 | 成桂田 | Longevity wheat flour and its making method |
| CN1352658A (en) * | 1999-04-09 | 2002-06-05 | 聚合物系统有限公司 | Preparation of polymer particles |
| US7217762B1 (en) * | 1999-04-09 | 2007-05-15 | Invitrogen Corporation | Process for the preparation of monodisperse polymer particles |
| CN102911317A (en) * | 2012-09-29 | 2013-02-06 | 东莞新长桥塑料有限公司 | Expandable polystyrene resin with ultra-large particle size and method for preparing same |
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Application publication date: 20150722 |
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