CN111117093B - 一种静曲强度高的eps板及其制备方法 - Google Patents
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Abstract
本发明属于EPS板技术领域,提出了一种静曲强度高的EPS板及其制备方法,包括以下重量份的组分:EPS珠粒65~90份,EPMMA珠粒10~35份,氧化锌0.5~1份,丁香油1.3~2份,聚乙烯醇4.2~8份,聚碳化二亚胺0.5~1份,乙烯基烷氧基磷酸酯1.5~4份,改性剂6~15份,促进剂0.5~2份,硅酸钠1~5份,三聚磷酸铝3~8份。其中,改性剂由以下重量份的组分组成:三烯丙基异氰脲酸酯5~15份,二氧化钛3~8份,三异丙醇胺0.5~2份,过氧化二异丙苯0.5~1份。通过上述技术方案,解决了现有技术中EPS板静曲强度不高的问题。
Description
技术领域
本发明属于EPS板技术领域,涉及一种静曲强度高的EPS板及其制备方法。
背景技术
可发性聚苯乙烯泡沫板――又名泡沫板、聚苯板、EPS板,是由可发性聚苯乙烯(EPS)颗粒为原料,经加热预发泡,在模具中加热成型而制成的具有微细闭孔结构的泡沫塑料板材,该产品有普通型和阻燃型,其主要使用特性有:质轻、隔热性能好、隔音性能好、抗老化、腐蚀性能。因此,其作为基板的保温装饰一体板被广泛用于外墙保温系统。
静曲强度是人造板在受力弯曲或断裂时它所能承受的压力强度。静曲强度是评价人造板抗弯曲破坏能力的一个重要指标。EPS板的静曲强度的高低与否,直接影响到EPS板的质量,因此,提高EPS板的静曲强度,将给EPS保温装饰一体板带来更可靠的质量保证,同时,也为外墙保温系统的施工提供了更安全的产品。
发明内容
本发明提出一种静曲强度高的EPS板及其制备方法,解决了现有技术中EPS板静曲强度不高的问题。
本发明的技术方案是这样实现的:
一种静曲强度高的EPS板,包括以下重量份的组分:
EPS珠粒65~90份,EPMMA珠粒10~35份,氧化锌0.5~1份,丁香油1.3~2份,聚乙烯醇4.2~8份,聚碳化二亚胺0.5~1份,乙烯基烷氧基磷酸酯1.5~4份,改性剂6~15份,促进剂0.5~2份,硅酸钠1~5份,三聚磷酸铝3~8份,
所述改性剂由以下重量份的组分组成:
三烯丙基异氰脲酸酯5~15份,二氧化钛3~8份,三异丙醇胺0.5~2份,过氧化二异丙苯0.5~1份。
作为进一步的技术方案,包括以下重量份的组分:
EPS珠粒75份,EPMMA珠粒25份,氧化锌0.7份,丁香油1.6份,聚乙烯醇6.7份,聚碳化二亚胺0.7份,乙烯基烷氧基磷酸酯3.1份,改性剂10份,促进剂1.2份,硅酸钠3份,三聚磷酸铝5份,
所述改性剂由以下重量份的组分组成:
三烯丙基异氰脲酸酯10份,二氧化钛6份,三异丙醇胺1.3份,过氧化二异丙苯0.7份。
作为进一步的技术方案,所述EPS珠粒的外径为0.6~0.9mm,所述EPMMA珠粒的外径为0.7mm。
作为进一步的技术方案,所述EPS珠粒与所述EPMMA珠粒的质量比为3:1。
作为进一步的技术方案,所述聚乙烯醇为聚乙烯醇2088。
作为进一步的技术方案,所述促进剂为乙烯基三乙氧基硅烷与聚苯乙烯磺钠质量比为2.3:1的混合物。
一种静曲强度高的EPS板的制备方法,包括以下步骤:
S1.按照上述的一种静曲强度高的EPS板的配方,称取各组分备用;
S2.将EPS珠粒和EPMMA珠粒、改性剂、促进剂混合均匀,在蒸汽压力为0.2~0.35MPa、温度为92~98℃的条件下进行预发泡,得到发泡珠粒;
S3.将发泡珠粒熟化,得到熟化珠粒;
S4.向步骤S3得到的熟化珠粒中加入氧化锌、丁香油、聚乙烯醇、聚碳化二亚胺、乙烯基烷氧基磷酸酯、硅酸钠、三聚磷酸铝,混合均匀,得到混合物料;
S5.在压力为0.6~0.7MPa的条件下,将步骤S4得到的混合物料送至成型机中,用分配式减压的方式将1.0MPa的蒸汽压力转换成0.75~0.8MPa的压力,进行板材成型,脱模,得到一种静曲强度高的EPS板。
作为进一步的技术方案,步骤S2中预发泡时间为45~55s。
作为进一步的技术方案,步骤S3中熟化温度为22~26℃,熟化时间为10~15h。
作为进一步的技术方案,步骤S4中脱模具体为在0.6MPa的压力下空冷500s。
本发明的工作原理及有益效果为:
1、本发明中,特定的配方及制备方法得到的EPS板不仅具有高的静曲强度,还具有良好的尺寸稳定性、耐冲击性、阻燃性和耐水性:尺寸稳定性达到0.031%,吸水厚度膨胀率低至0.011%,静曲强度高达2.70MPa,冲击强度高达159KJ/m2,滞燃性能达到V-1等级,解决了现有技术中EPS板静曲强度不高的问题。
2、本发明中,在EPS珠粒中加入EPMMA珠粒,EPS分子中含有8个碳原子,碳含量占分子质量分数的92%,而EPMMA分子中只有5个碳原子,含碳量占分子质量分数的60%,EPMMA珠粒的加入,减少了EPS珠粒的碳含量,增大的氢含量改变了EPS珠粒的脆性。在蒸汽压力为0.2~0.35MPa、温度为92~98℃的条件下进行预发泡,EPMMA发汽量较大,EPS吃汽量大,二者相互协同,使得预发泡后的珠粒呈高弹态,密度更均匀。
3、本发明中,在预发泡前,先将EPS珠粒和EPMMA珠粒、改性剂、促进剂混合均匀,改性剂、促进剂的加入,进一步改善了EPS的脆性,提高了EPS板的柔性,从而提高了EPS板的静曲强度和耐冲击性。改性剂由三烯丙基异氰脲酸酯、二氧化钛、三异丙醇胺、过氧化二异丙苯组成,在发泡过程中三异丙醇胺二氧化钛与三异丙醇胺促进了各组分的分散的均匀性,过氧化二异丙苯促进了三烯丙基异氰脲酸酯与EPS珠粒、EPMMA之间交联形成网状结构,从而提高了EPS板的静曲强度和耐冲击性。
4、本发明中,氧化锌、丁香油与聚乙烯醇相互配伍,改变了预发泡珠粒的初粘性,一方面,使得物料混合的更加均匀,显著提高了EPS板的尺寸稳定性,另一方面,提高了物料内部的界面结合强度,从而提高了EPS板的静曲强度和耐冲击性。聚碳化二亚胺与乙烯基烷氧基磷酸酯协同作用,显著提高了EPS板的耐水性。硅酸钠与三聚磷酸铝配伍,提高了EPS板的阻燃性。
5、本发明中,在板材成型工艺中采用分配式减压的方式,将1.0MPa的蒸汽压力转换成0.75~0.8MPa的压力,以大气压、小流量的方法进行板材成型,进一步提升了EPS板的性能,使得制备的EPS板的内部熔结度高、界面结合度大、含水率低,从而提高了EPS板的静曲强度和耐冲击性。
具体实施方式
下面将结合本发明实施例,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例1
一种静曲强度高的EPS板,包括以下重量份的组分:
EPS珠粒65份,EPMMA珠粒10份,氧化锌0.5份,丁香油1.3份,聚乙烯醇4.2份,聚碳化二亚胺0.5份,乙烯基烷氧基磷酸酯1.5份,改性剂6份,促进剂0.5份,硅酸钠1份,三聚磷酸铝3份,
其中,改性剂由以下重量份的组分组成:三烯丙基异氰脲酸酯10份,二氧化钛6份,三异丙醇胺1.3份,过氧化二异丙苯0.7份;EPS珠粒的外径为0.6~0.9mm,所述EPMMA珠粒的外径为0.7mm;聚乙烯醇为聚乙烯醇2088;促进剂为乙烯基三乙氧基硅烷与聚苯乙烯磺钠质量比为2.3:1的混合物;
其制备方法,包括以下步骤:
S1.按照上述的配方,称取各组分备用;
S2.将EPS珠粒和EPMMA珠粒、改性剂、促进剂混合均匀后送至预发机,在蒸汽压力为0.25MPa、温度为95℃的条件下,预发泡50s后,得到发泡珠粒;
S3.将发泡珠粒送至熟化仓,在25℃熟化12h,得到熟化珠粒;
S4.向步骤S3得到的熟化珠粒中加入氧化锌、丁香油、聚乙烯醇、聚碳化二亚胺、乙烯基烷氧基磷酸酯、硅酸钠、三聚磷酸铝,混合均匀,得到混合物料;
S5.在压力为0.6MPa的条件下,将步骤S4得到的混合物料送至成型机中,用分配式减压的方式将1.0MPa的蒸汽压力转换成0.75MPa的压力,以大气压、小流量的方式进行板材成型,再在真空0.6MPa的压力下空冷500s脱模,脱模后的成品在60±3℃下干燥72h,得到一种静曲强度高的EPS板。
实施例2
一种静曲强度高的EPS板,包括以下重量份的组分:
EPS珠粒90份,EPMMA珠粒35份,氧化锌1份,丁香油2份,聚乙烯醇8份,聚碳化二亚胺1份,乙烯基烷氧基磷酸酯4份,改性剂15份,促进剂2份,硅酸钠5份,三聚磷酸铝8份,
其中,改性剂由以下重量份的组分组成:三烯丙基异氰脲酸酯10份,二氧化钛6份,三异丙醇胺1.3份,过氧化二异丙苯0.7份;EPS珠粒的外径为0.6~0.9mm,所述EPMMA珠粒的外径为0.7mm;聚乙烯醇为聚乙烯醇2088;促进剂为乙烯基三乙氧基硅烷与聚苯乙烯磺钠质量比为2.3:1的混合物;
其制备方法同实施例1。
实施例3
一种静曲强度高的EPS板,包括以下重量份的组分:
EPS珠粒75份,EPMMA珠粒25份,氧化锌0.7份,丁香油1.6份,聚乙烯醇6.7份,聚碳化二亚胺0.7份,乙烯基烷氧基磷酸酯3.1份,改性剂10份,促进剂1.2份,硅酸钠3份,三聚磷酸铝5份,
其中,改性剂由以下重量份的组分组成:三烯丙基异氰脲酸酯10份,二氧化钛6份,三异丙醇胺1.3份,过氧化二异丙苯0.7份;EPS珠粒的外径为0.6~0.9mm,所述EPMMA珠粒的外径为0.7mm;聚乙烯醇为聚乙烯醇2088;促进剂为乙烯基三乙氧基硅烷与聚苯乙烯磺钠质量比为2.3:1的混合物;
其制备方法同实施例1。
实施例4
一种静曲强度高的EPS板,包括以下重量份的组分:
EPS珠粒75份,EPMMA珠粒25份,氧化锌0.7份,丁香油1.6份,聚乙烯醇6.7份,聚碳化二亚胺0.7份,乙烯基烷氧基磷酸酯3.1份,改性剂10份,促进剂1.2份,硅酸钠3份,三聚磷酸铝5份,
其中,改性剂由以下重量份的组分组成:三烯丙基异氰脲酸酯5份,二氧化钛3份,三异丙醇胺0.5份,过氧化二异丙苯0.5份;EPS珠粒的外径为0.6~0.9mm,所述EPMMA珠粒的外径为0.7mm;聚乙烯醇为聚乙烯醇2088;促进剂为乙烯基三乙氧基硅烷与聚苯乙烯磺钠质量比为2.3:1的混合物;
其制备方法同实施例1。
实施例5
一种静曲强度高的EPS板,包括以下重量份的组分:
EPS珠粒75份,EPMMA珠粒25份,氧化锌0.7份,丁香油1.6份,聚乙烯醇6.7份,聚碳化二亚胺0.7份,乙烯基烷氧基磷酸酯3.1份,改性剂10份,促进剂1.2份,硅酸钠3份,三聚磷酸铝5份,
其中,改性剂由以下重量份的组分组成:三烯丙基异氰脲酸酯15份,二氧化钛8份,三异丙醇胺2份,过氧化二异丙苯1份;EPS珠粒的外径为0.6~0.9mm,所述EPMMA珠粒的外径为0.7mm;聚乙烯醇为聚乙烯醇2088;促进剂为乙烯基三乙氧基硅烷与聚苯乙烯磺钠质量比为2.3:1的混合物;
其制备方法同实施例1。
实施例6
一种静曲强度高的EPS板的配方同实施例3,其制备方法包括以下步骤:
S1.按照实施例3的配方,称取各组分备用;
S2.将EPS珠粒和EPMMA珠粒、改性剂、促进剂混合均匀后送至预发机,在蒸汽压力为0.2MPa、温度为92℃的条件下,预发泡55s后,得到发泡珠粒;
S3.将发泡珠粒送至熟化仓,在26℃熟化10h,得到熟化珠粒;
S4.向步骤S3得到的熟化珠粒中加入氧化锌、丁香油、聚乙烯醇、聚碳化二亚胺、乙烯基烷氧基磷酸酯、硅酸钠、三聚磷酸铝,混合均匀,得到混合物料;
S5.在压力为0.7MPa的条件下,将步骤S4得到的混合物料送至成型机中,用分配式减压的方式将1.0MPa的蒸汽压力转换成0.8MPa的压力,以大气压、小流量的方式进行板材成型,再在真空0.6MPa的压力下空冷500s脱模,脱模后的成品在60±3℃下干燥72h,得到一种静曲强度高的EPS板。
实施例7
一种静曲强度高的EPS板的配方同实施例3,其制备方法包括以下步骤:
S1.按照实施例3的配方,称取各组分备用;
S2.将EPS珠粒和EPMMA珠粒、改性剂、促进剂混合均匀后送至预发机,在蒸汽压力为0.35MPa、温度为98℃的条件下,预发泡45s后,得到发泡珠粒;
S3.将发泡珠粒送至熟化仓,在22℃熟化10h,得到熟化珠粒;
S4.向步骤S3得到的熟化珠粒中加入氧化锌、丁香油、聚乙烯醇、聚碳化二亚胺、乙烯基烷氧基磷酸酯、硅酸钠、三聚磷酸铝,混合均匀,得到混合物料;
S5.在压力为0.6MPa的条件下,将步骤S4得到的混合物料送至成型机中,用分配式减压的方式将1.0MPa的蒸汽压力转换成0.75MPa的压力,以大气压、小流量的方式进行板材成型,再在真空0.6MPa的压力下空冷500s脱模,脱模后的成品在60±3℃下干燥72h,得到一种静曲强度高的EPS板。
实施例8
一种静曲强度高的EPS板,包括以下重量份的组分:
EPS珠粒75份,EPMMA珠粒25份,氧化锌0.7份,丁香油1.6份,聚乙烯醇6.7份,聚碳化二亚胺0.7份,乙烯基烷氧基磷酸酯3.1份,改性剂10份,促进剂1.2份,硅酸钠3份,三聚磷酸铝5份,
其中,改性剂由以下重量份的组分组成:三烯丙基异氰脲酸酯10份,二氧化钛6份,三异丙醇胺1.3份,过氧化二异丙苯0.7份;EPS珠粒的外径为0.6~0.9mm,所述EPMMA珠粒的外径为0.7mm;聚乙烯醇为聚乙烯醇2488;促进剂为乙烯基三乙氧基硅烷与聚苯乙烯磺钠质量比为2.3:1的混合物;
其制备方法同实施例1。
经检测,实施例1~8的EPS板的密度为20kg/cm3。
对比例1
一种静曲强度高的EPS板,与实施例3的区别仅在于步骤S2中未添加改性剂。
对比例2
一种静曲强度高的EPS板,与实施例3的区别仅在于步骤S2中未添加促进剂。
对比例3
一种静曲强度高的EPS板,与实施例3的区别仅在于步骤S4中未添加氧化锌和丁香油。
对比例4
一种静曲强度高的EPS板,与实施例3的区别仅在于步骤S4中未添加聚碳化二亚胺、乙烯基烷氧基磷酸酯。
对比例5
一种静曲强度高的EPS板,与实施例3的区别仅在于步骤S4为:在压力为0.7MPa的条件下,将步骤S4得到的混合物料送至成型机中,在1.0MPa的蒸汽压力下进行板材成型,再在真空0.6MPa的压力下空冷500s脱模,脱模后的成品在60±3℃下干燥72h,得到一种静曲强度高的EPS板。
按照GB/T17657-2013《人造板及饰面人造板理化性能试验方法》的规定,测试实施例1~8及对比例1~5制备的EPS板的尺寸稳定性、吸水厚度膨胀率、静曲强度、抗冲击性和滞燃性能,测试结果见下表:
表1实施例1~8及对比例1~5制备的EPS板的性能测试结果
从上表中可以看出,实施例1~8的EPS板尺寸稳定性达到0.031%,吸水厚度膨胀率低至0.011%,静曲强度高达2.70MPa,冲击强度高达159KJ/m2,滞燃性能达到V-1等级,说明本发明制备的EPS板不仅具有高的静曲强度,还具有良好的尺寸稳定性、耐冲击性、阻燃性和耐水性。
与实施例1~8的EPS板相比,对比例1~3的EPS板的尺寸稳定性差,静曲强度和冲击强度均较低,对比例1的EPS板配方中未添加改性剂,对比例2的EPS板配方中未添加促进剂,对比例3的EPS板配方中未添加氧化锌、丁香油,说明改性剂、促进剂、氧化锌、丁香油的加入,与配方中其他组分配伍,显著提高了EPS板的尺寸稳定性、静曲强度和耐冲击性。
与实施例1~8的EPS板相比,对比例4的EPS板的吸水厚度膨胀率高,对比例4的配方中未添加聚碳化二亚胺、乙烯基烷氧基磷酸酯,说明聚碳化二亚胺、乙烯基烷氧基磷酸酯的加入,显著提高了EPS板的耐水性。
与实施例1~8的EPS板相比,对比例5的EPS板静曲强度和冲击强度均较低,对比例5的EPS板在板材成型过程中未采用、大气压、小流量的方式,说明以大气压、小流量的方法进行板材成型,进一步提升了EPS板的性能,使得制备的EPS板的内部熔结度高、界面结合度大、含水率低,从而提高了EPS板的静曲强度和耐冲击性。
以上仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (8)
1.一种静曲强度高的EPS板,其特征在于,包括以下重量份的组分:
EPS珠粒65~90份,EPMMA珠粒10~35份,氧化锌0.5~1份,丁香油1.3~2份,聚乙烯醇4.2~8份,聚碳化二亚胺0.5~1份,乙烯基烷氧基磷酸酯1.5~4 份,改性剂6~15份,促进剂0.5~2份,硅酸钠1~5份,三聚磷酸铝3~8份,
所述改性剂由以下重量份的组分组成:
三烯丙基异氰脲酸酯5~15份,二氧化钛3~8份,三异丙醇胺0.5~2份,过氧化二异丙苯0.5~1份;
所述EPS珠粒与所述EPMMA珠粒的质量比为3:1;
所述促进剂为乙烯基三乙氧基硅烷与聚苯乙烯磺钠质量比为2.3:1的混合物;
所述EPS板的制备方法,包括以下步骤:
S1. 按照所述EPS板的配方,称取各组分备用;
S2. 将EPS珠粒和EPMMA珠粒、改性剂、促进剂混合均匀,在蒸汽压力为0.2~0.35MPa、温度为92~98℃的条件下进行预发泡,得到发泡珠粒;
S3. 将发泡珠粒熟化,得到熟化珠粒;
S4. 向步骤S3得到的熟化珠粒中加入氧化锌、丁香油、聚乙烯醇、聚碳化二亚胺、乙烯基烷氧基磷酸酯、硅酸钠、三聚磷酸铝,混合均匀,得到混合物料;
S5. 在压力为0.6~0.7MPa的条件下,将步骤S4得到的混合物料送至成型机中,用分配式减压的方式将1.0MPa的蒸汽压力转换成0.75~0.8MPa的压力,进行板材成型,脱模,得到一种静曲强度高的EPS板。
2.根据权利要求1所述的一种静曲强度高的EPS板,其特征在于,包括以下重量份的组分:
EPS珠粒75份,EPMMA珠粒25份,氧化锌0.7份,丁香油1.6份,聚乙烯醇6.7份,聚碳化二亚胺0.7份,乙烯基烷氧基磷酸酯3.1份,改性剂10份,促进剂1.2份,硅酸钠3份,三聚磷酸铝5份,
所述改性剂由以下重量份的组分组成:
三烯丙基异氰脲酸酯10份,二氧化钛6份,三异丙醇胺1.3份,过氧化二异丙苯0.7份。
3.根据权利要求1所述的一种静曲强度高的EPS板,其特征在于,所述EPS珠粒的外径为0.6~0.9mm,所述EPMMA珠粒的外径为0.7mm。
4.根据权利要求1所述的一种静曲强度高的EPS板,其特征在于,所述聚乙烯醇为聚乙烯醇2088。
5.一种静曲强度高的EPS板的制备方法,其特征在于,包括以下步骤:
S1. 按照权利要求1~4任意一项所述的一种静曲强度高的EPS板的配方,称取各组分备用;
S2. 将EPS珠粒和EPMMA珠粒、改性剂、促进剂混合均匀,在蒸汽压力为0.2~0.35MPa、温度为92~98℃的条件下进行预发泡,得到发泡珠粒;
S3. 将发泡珠粒熟化,得到熟化珠粒;
S4. 向步骤S3得到的熟化珠粒中加入氧化锌、丁香油、聚乙烯醇、聚碳化二亚胺、乙烯基烷氧基磷酸酯、硅酸钠、三聚磷酸铝,混合均匀,得到混合物料;
S5. 在压力为0.6~0.7MPa的条件下,将步骤S4得到的混合物料送至成型机中,用分配式减压的方式将1.0MPa的蒸汽压力转换成0.75~0.8MPa的压力,进行板材成型,脱模,得到一种静曲强度高的EPS板。
6.根据权利要求5所述的一种静曲强度高的EPS板的制备方法,其特征在于,步骤S2中预发泡时间为45~55s。
7.根据权利要求5所述的一种静曲强度高的EPS板的制备方法,其特征在于,步骤S3中熟化温度为22~26℃,熟化时间为10~15h。
8.根据权利要求5所述的一种静曲强度高的EPS板的制备方法,其特征在于,步骤S4中脱模具体为在0.6MPa的压力下空冷500s。
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CN107162442A (zh) * | 2017-06-13 | 2017-09-15 | 合肥钢骨玻璃制品有限公司 | 一种夹胶玻璃及其生产工艺 |
CN110330751A (zh) * | 2019-07-16 | 2019-10-15 | 波尔玛(辛集)保温材料有限公司 | 一种消失模铸造用可发性气化模材料及其制备方法 |
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