CN104788709A - Preparation method for super-size composite rubber-modified polystyrene resin - Google Patents

Preparation method for super-size composite rubber-modified polystyrene resin Download PDF

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Publication number
CN104788709A
CN104788709A CN 201510181999 CN201510181999A CN104788709A CN 104788709 A CN104788709 A CN 104788709A CN 201510181999 CN201510181999 CN 201510181999 CN 201510181999 A CN201510181999 A CN 201510181999A CN 104788709 A CN104788709 A CN 104788709A
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polystyrene
polystyrene resin
super
particle size
reaction
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CN 201510181999
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Chinese (zh)
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张莉莉
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张家港市山牧新材料技术开发有限公司
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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

一种超大粒径复合橡胶改性聚苯乙烯树脂的制备方法 Preparing a composite rubber-modified polystyrene resin is one kind of large particle diameter

技术领域 FIELD

[0001] 本申请属于材料技术领域,特别是涉及一种超大粒径复合橡胶改性聚苯乙烯树脂的制备方法。 [0001] The present application belongs to the technical field of materials, and particularly to a method for preparing large diameter of the composite rubber-modified polystyrene resins.

背景技术 Background technique

[0002] 可发性聚苯乙烯(简称EPS),其广泛应用于包装、建材、渔业、工艺品等领域,在这些应用领域当中,所需的EPS颗粒粒径的范围通常为0.5〜2.0_,然而,对于渔业、工业水处理、深海探测基地及海洋漂泊物等应用领域则需要超大粒径的原料,比如粒径在2.5mm以上的大粒径可发性聚苯乙烯,而且要求粒径均匀,质量稳定均一。 [0002] polystyrene (referred to as EPS), which is widely used in packaging, building materials, fisheries, handicrafts and other fields, among these applications, the desired range of particle size is usually EPS 0.5~2.0_, However, applications for fishing, industrial water treatment, deep-sea exploration and marine base drift, etc. is required Oversized material particle size, such large particle size diameter expandable polystyrene 2.5mm or more, and the requirements of uniform size , uniform and stable quality. 由于制备超大粒径的EPS原料存在上述技术上的困难,从而造成其售价比一般性的EPS原料高出很多,因此,如能开发一种颗粒均匀、外观圆满、质量稳定均一、能满足不同领域客户需求的超大粒径的EPS将具有广阔的市场前景,为企业创造巨大的经济效益。 Because of the above difficulties in the preparation of technical material EPS large particle size, resulting in much higher than the price of raw materials EPS general, therefore, such particles can develop a uniform, satisfactory appearance, stable and homogeneous quality, to meet the different large particle size EPS areas of customer demand will have broad market prospects, and create huge economic benefits for the enterprise.

[0003] 现有技术中,利用悬浮聚合法生产的可发性聚苯乙烯,其中也会有少量的大颗粒粒径原料产生,但是,其缺陷在于:每个反应釜所生产的大粒径EPS的产量非常少,而且质量很不均匀,悬浮聚合反应过程中所制备的大粒径的EPS原料往往出现扁粒子或者变形粒子的质量问题,无法满足客户的要求。 [0003] In the prior art, by a suspension polymerization process of expandable polystyrene, which also has a small number of large particle size raw material to produce, but its drawback is that: in each reaction vessel a large particle size produced EPS produced in very small, but very uneven quality, the quality of flat particles, or particles of large particle size modification suspension polymerization process of preparing an EPS material are often unable to meet customer requirements.

发明内容 SUMMARY

[0004] 本发明的目的在于提供一种超大粒径复合橡胶改性聚苯乙烯树脂的制备方法,以克服现有技术中的不足。 [0004] The object of the present invention is to provide a large diameter of the composite rubber-modified polystyrene resin is prepared, in order to overcome the disadvantages of the prior art.

[0005] 为实现上述目的,本发明提供如下技术方案: [0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] 本申请实施例公开了一种超大粒径复合橡胶改性聚苯乙烯树脂的制备方法,包括步骤: Embodiment [0006] embodiment of the present application discloses a method for preparing large diameter of the composite rubber-modified polystyrene resin, comprising the steps of:

[0007] I)、筛选出不含有发泡剂的颗粒粒径为0.2〜1.0mm的聚苯乙烯颗粒作为聚苯乙烯种子备用; [0007] I), containing a foaming agent to screen out particles of a particle size of polystyrene particles 0.2~1.0mm as polystyrene seed reserve;

[0008] 2)、将去离子水、聚苯乙烯种子、分散剂依次投入反应釜中,然后升温至55〜70°C,再缓慢加入聚苯乙烯单体,同时加入引发剂和增塑剂,继续升温至90〜95°C进行低温聚合反应,在低温反应结束后,再加入发泡剂,并升温至150°C进行高温聚合反应,获得聚合物; [0008] 2), deionized water, polystyrene seed, dispersants sequentially into the autoclave, and then warmed to 55~70 ° C, was slowly added a polystyrene monomer, initiator, and a plasticizer were added simultaneously continued warmed to 90~95 ° C low temperature polymerization, after the low temperature reaction, and then adding a foaming agent, and heated to 150 ° C high temperature polymerization reaction to obtain a polymer;

[0009] 3)、待反应釜冷却后,将物料转移至中间槽,向中间槽内添加盐酸调节pH值为5〜6 ; [0009] 3) After the reactor was cooled, the material is transferred to an intermediate tank, the intermediate tank was added HCl pH 5 to 6;

[0010] 4)、将聚合物依次经过洗涤、脱水、干燥、筛分的工序后获得所需粒径大小的超大粒径可发性聚苯乙烯树脂原料。 [0010] 4) the polymer sequentially after washing, dehydration, and dried, to obtain the desired particle size of the large particle polystyrene resin material after the sieving step.

[0011 ] 优选的,在上述的超大粒径复合橡胶改性聚苯乙烯树脂的制备方法中,还包括步骤5):将聚苯乙烯树脂原料放入混合机内,然后添加表面涂层剂和静电防止剂,搅拌均匀后,包装获得成品。 [0011] Preferably, in the above-described method for preparing large particle diameter of the composite rubber-modified polystyrene resin, further comprising the step 5): The polystyrene resin material into the mixer, then adding a surface coating agent, and antistatic agent, after mixing, the finished package is obtained.

[0012] 优选的,在上述的超大粒径复合橡胶改性聚苯乙烯树脂的制备方法中,所述步骤 [0012] Preferably, in the above-described method for preparing large diameter of the composite rubber-modified polystyrene resin, said step

2)中,聚苯乙烯单体的加入时间为3〜8小时。 2) was added polystyrene time monomers 3~8 hours.

[0013]与现有技术相比,本发明的优点在于:本发明的超大粒径复合橡胶改性聚苯乙烯树脂,具有粒径超大均匀、外观圆满、质量稳定均一等优点,通过在聚苯乙烯系树脂中引入不同结构形态和粒径尺寸的橡胶颗粒,使复合橡胶改性聚苯乙烯系树脂同时具备良好的抗冲击强度和表面光泽度。 [0013] Compared with the prior art, advantages of the present invention is that: the large particle size of the present invention, a composite rubber-modified polystyrene resin having a large particle size uniform, satisfactory appearance, quality and uniformity, etc., by a polyphenylene the introduction of different morphology and particle size of the rubber particles in the vinyl-based resin, the composite rubber-modified polystyrene resins also have good impact strength and surface gloss.

具体实施方式 detailed description

[0014] 本发明通过下列实施例作进一步说明:根据下述实施例,可以更好地理解本发明。 [0014] The present invention is further illustrated the following examples: Example according to the following embodiments, the present invention may be better understood. 然而,本领域的技术人员容易理解,实施例所描述的具体的物料比、工艺条件及其结果仅用于说明本发明,而不应当也不会限制权利要求书中所详细描述的本发明。 However, those skilled in the art will readily appreciate the specific materials than the described embodiments, the process conditions and the results of the present invention is for illustration only, and should not limit the claims are not described in detail the present invention.

[0015] 本实施例中,超大粒径复合橡胶改性聚苯乙烯树脂的制备方法,包括步骤: [0015] In this embodiment, the large diameter of the composite prepared rubber modified polystyrene resin, comprising the steps of:

[0016] I)筛选出不含有发泡剂的颗粒粒径为0.2〜1.0mm的聚苯乙烯颗粒作为聚苯乙烯种子备用。 [0016] I) not screened particle size of polystyrene particles containing a foaming agent as polystyrene seed 0.2~1.0mm backup.

[0017] 2)将去离子水、聚苯乙烯种子、分散剂依次投入反应釜中,然后升温至55〜70°C,再缓慢加入聚苯乙烯单体,同时加入引发剂和增塑剂,继续升温至90〜95°C进行低温聚合反应,将聚苯乙烯单体的加入时间为3〜8小时,在低温反应结束后,再加入发泡剂,并升温至150°C进行高温聚合反应,获得聚合物。 [0017] 2) deionized water, polystyrene seed, dispersants sequentially into the autoclave, and then warmed to 55~70 ° C, was slowly added a polystyrene monomer, while adding an initiator and a plasticizer, continue warmed to 90~95 ° C low temperature polymerization, the monomer addition time is 3~8 hours polystyrene, after the low temperature reaction, and then adding a foaming agent, and heated to 150 ° C high temperature polymerization to obtain a polymer.

[0018] 3)待反应釜冷却后,将物料转移至中间槽,向中间槽内添加盐酸调节pH值为5〜 [0018] 3) After the reactor was cooled, the material is transferred to an intermediate tank, hydrochloric acid was added to adjust the pH value of -5 to intermediate vessel

6ο 6ο

[0019] 4)将聚合物依次经过洗涤、脱水、干燥、筛分的工序后获得所需粒径大小的超大粒径可发性聚苯乙烯树脂原料。 [0019] 4) The polymer after washing successively, dehydrated and dried to obtain the desired particle size of the large particle polystyrene resin material after the sieving step.

[0020] 5)包装成品将聚苯乙烯树脂原料放入混合机内,然后添加表面涂层剂和静电防止剂,搅拌均匀后,包装获得成品。 [0020] 5) The finished packaging polystyrene resin material into the mixer, then adding a surface coating agent, and an antistatic agent, after mixing, the finished package is obtained.

[0021] 最后,还需要说明的是,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者设备所固有的要素。 [0021] Finally, it should be noted that the terms "comprises", "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus include only those items elements, but also includes other elements not explicitly listed, or further includes elements of the process, method, article or device inherent.

Claims (3)

  1. 1.一种超大粒径复合橡胶改性聚苯乙烯树脂的制备方法,其特征在于,包括步骤: 1)、筛选出不含有发泡剂的颗粒粒径为0.2〜1.0mm的聚苯乙烯颗粒作为聚苯乙烯种子备用; 2)、将去离子水、聚苯乙烯种子、分散剂依次投入反应釜中,然后升温至55〜70°C,再缓慢加入聚苯乙烯单体,同时加入引发剂和增塑剂,继续升温至90〜95°C进行低温聚合反应,在低温反应结束后,再加入发泡剂,并升温至150°C进行高温聚合反应,获得聚合物; 3)、待反应釜冷却后,将物料转移至中间槽,向中间槽内添加盐酸调节pH值为5〜6 ; 4)、将聚合物依次经过洗涤、脱水、干燥、筛分的工序后获得所需粒径大小的超大粒径可发性聚苯乙烯树脂原料。 1. A method of preparing large diameter of the composite rubber-modified polystyrene resin, wherein, comprising the steps of: 1), not screened particle size of polystyrene particles containing a foaming agent is 0.2~1.0mm polystyrene seed reserve; 2), deionized water, polystyrene seed, dispersants sequentially into the autoclave, and then warmed to 55~70 ° C, was slowly added a polystyrene monomer, initiator was added at the same time and a plasticizer, warmed to 90~95 ° C continued low temperature polymerization, after the low temperature reaction, and then adding a foaming agent, and heated to 150 ° C high temperature polymerization reaction to obtain a polymer; 3), of the reaction after cooling the autoclave, the material is transferred to an intermediate tank, add HCl pH 5 to 6 to the intermediate vessel; 4), the polymer sequentially after washing, dehydration, and dried, to obtain a desired particle size after screening step large diameter polystyrene resin material.
  2. 2.根据权利要求1所述的超大粒径复合橡胶改性聚苯乙烯树脂的制备方法,其特征在于:还包括步骤5):将聚苯乙烯树脂原料放入混合机内,然后添加表面涂层剂和静电防止剂,搅拌均匀后,包装获得成品。 The large particle size of the preparation of claim 1, rubber-modified polystyrene resin composite, characterized by: further comprising the step 5): The polystyrene resin material into the mixer, then adding a surface coating agent and antistatic agent layer, after mixing, the finished package is obtained.
  3. 3.根据权利要求1所述的超大粒径复合橡胶改性聚苯乙烯树脂的制备方法,其特征在于:所述步骤2)中,聚苯乙烯单体的加入时间为3〜8小时。 3. The large particle size of the preparation of claim 1, rubber-modified polystyrene resin composite, characterized in that: said step 2) is added over a period of 3~8 hours polystyrene monomer.
CN 201510181999 2015-04-17 2015-04-17 Preparation method for super-size composite rubber-modified polystyrene resin CN104788709A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1059913A (en) * 1990-03-22 1992-04-01 罗姆和哈斯公司 Process for making controlled, uniform-sized particles in 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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1059913A (en) * 1990-03-22 1992-04-01 罗姆和哈斯公司 Process for making controlled, uniform-sized particles in 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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