CN111471235A - 一种高性能发泡聚丙烯材料及其制备方法 - Google Patents
一种高性能发泡聚丙烯材料及其制备方法 Download PDFInfo
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- -1 polypropylene Polymers 0.000 title claims abstract description 143
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 120
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 115
- 239000000463 material Substances 0.000 title claims abstract description 73
- 238000002360 preparation method Methods 0.000 title abstract description 13
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims abstract description 46
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 30
- BISNZAMPUNENFV-UHFFFAOYSA-N 2,2,4,4,6,6-hexabromo-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound BrP1(Br)=NP(Br)(Br)=NP(Br)(Br)=N1 BISNZAMPUNENFV-UHFFFAOYSA-N 0.000 claims abstract description 23
- 235000019359 magnesium stearate Nutrition 0.000 claims abstract description 23
- 239000006260 foam Substances 0.000 claims abstract description 22
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000003381 stabilizer Substances 0.000 claims abstract description 21
- 230000002745 absorbent Effects 0.000 claims abstract description 20
- 239000002250 absorbent Substances 0.000 claims abstract description 20
- 239000004088 foaming agent Substances 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 15
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 15
- 238000001125 extrusion Methods 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims description 29
- 238000003756 stirring Methods 0.000 claims description 18
- 238000005187 foaming Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 10
- 229920001296 polysiloxane Polymers 0.000 claims description 8
- 239000000155 melt Substances 0.000 claims description 7
- 239000004156 Azodicarbonamide Substances 0.000 claims description 6
- 150000001408 amides Chemical class 0.000 claims description 6
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical group NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 claims description 6
- 235000019399 azodicarbonamide Nutrition 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- GDESWOTWNNGOMW-UHFFFAOYSA-N resorcinol monobenzoate Chemical group OC1=CC=CC(OC(=O)C=2C=CC=CC=2)=C1 GDESWOTWNNGOMW-UHFFFAOYSA-N 0.000 claims description 6
- 239000004604 Blowing Agent Substances 0.000 claims 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims 1
- 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 abstract description 9
- 239000003063 flame retardant Substances 0.000 abstract description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 8
- 239000001301 oxygen Substances 0.000 abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 abstract description 8
- 238000004806 packaging method and process Methods 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 14
- 238000002844 melting Methods 0.000 description 4
- 230000002195 synergetic effect Effects 0.000 description 4
- 230000008018 melting Effects 0.000 description 3
- MWCLLHOVUTZFKS-UHFFFAOYSA-N Methyl cyanoacrylate Chemical compound COC(=O)C(=C)C#N MWCLLHOVUTZFKS-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
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- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000013012 foaming technology Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
本发明公开了一种高性能发泡聚丙烯材料及其制备方法,所述的高性能发泡聚丙烯材料,以重量份为单位,包括以下原料:聚丙烯70‑92份、二氧化硅2‑4份、聚硅氧烷氨酯丙烯酸酯3‑6份、六溴环三聚磷腈1‑2份、2‑氰基丙烯酸甲酯3‑5份、硬脂酸镁0.3‑0.7份、乙撑基双硬脂酰胺0.4‑0.9份、发泡剂0.5‑1份、稳泡剂0.2‑0.4份、紫外线吸收剂0.1‑0.2份;所述的高性能发泡聚丙烯材料是经过多级混合、挤出等步骤制得的。本发明制得的发泡聚丙烯材料阻燃性能和机械性能优异,氧指数达到40.6%以上,断裂伸长率达15.62%以上,能满足在包装、汽车、家具、建筑、玩具等领域的应用需求。
Description
技术领域
本发明属于发泡材料制备技术领域,具体涉及一种高性能发泡聚丙烯材料及其制备方法。
背景技术
发泡聚丙烯材料不仅具有泡沫材料的优异品质,如质量轻、吸收冲击载荷能力和隔热、隔音能力较强,而且继承了聚丙烯树脂的许多优良性能,如性价比、耐热性、力学性能优良,易于回收等特点。因此发泡聚丙烯材料在包装、汽车、家具、建筑、玩具等领域的应用发展潜力巨大。聚丙烯属于结晶性聚合物,在结晶熔点以下几乎不流动,结晶熔点以上其熔体黏度急剧变小,所以发泡过程中产生的气体很难被包住。同时,聚丙烯从熔融态转变为结晶态释放出大量的热量,结晶过程所需的时间较长,适宜聚丙烯发泡的温度较窄,为了制得发泡倍率高的聚丙烯泡沫塑料需要提高聚丙烯的熔体强度。目前制备聚丙烯发泡粒子所采用的聚丙烯近熔点发泡技术是指聚丙烯釜压发泡的温度窗口在其熔点附近。并且目前市场上已有的发泡聚丙烯材料阻燃性能较差,产品使用性能较差,为了进一步扩大聚丙烯材料的使用范围,有必要对其性能进行改性,以满足应用需求。
发明内容
本发明提供一种高性能发泡聚丙烯材料及其制备方法,以解决现有的发泡聚丙烯材料阻燃性能、断裂伸长率较差的实际技术问题。
为了解决以上技术问题,本发明采用以下技术方案:
一种高性能发泡聚丙烯材料,以重量份为单位,包括以下原料:聚丙烯70-92份、二氧化硅2-4份、聚硅氧烷氨酯丙烯酸酯3-6份、六溴环三聚磷腈1-2份、2-氰基丙烯酸甲酯3-5份、硬脂酸镁0.3-0.7份、乙撑基双硬脂酰胺0.4-0.9份、发泡剂0.5-1份、稳泡剂0.2-0.4份、紫外线吸收剂0.1-0.2份。
技术原理:一方面聚硅氧烷氨酯丙烯酸酯含有硅氧键,当发泡聚丙烯材料被点燃时,硅氧烷快速铺盖到发泡聚丙烯材料的表面,起到保护层作用,使发泡聚丙烯材料隔热、隔氧,从而阻止其燃烧。另一方面,六溴环三聚磷腈具有Br-P-N的协同效应,其与聚硅氧烷氨酯丙烯酸酯配合使用,可大大提高发泡聚丙烯材料的阻燃效果,进而提高发泡聚丙烯材料的氧指数。2-氰基丙烯酸甲酯可改善发泡聚丙烯材料的黏结层韧性,另外硬脂酸镁可降低2-氰基丙烯酸甲酯的热膨胀性能,乙撑基双硬脂酰胺的加入,可以提高聚硅氧烷氨酯丙烯酸酯、六溴环三聚磷腈、2-氰基丙烯酸甲酯和硬脂酸镁之间的的分散性、相容性和加工流动性,使得组分原料之间混合得更加均匀,形成网络结构,提高发泡聚丙烯材料体系界面粘结力,进而提高发泡聚丙烯材料的断裂伸长率。
进一步地,所述的高性能发泡聚丙烯材料,以重量份为单位,包括以下原料:聚丙烯85份、二氧化硅3份、聚硅氧烷氨酯丙烯酸酯5份、六溴环三聚磷腈1.6份、2-氰基丙烯酸甲酯4份、硬脂酸镁0.5份、乙撑基双硬脂酰胺0.7份、发泡剂0.8份、稳泡剂0.3份、紫外线吸收剂0.2份。
进一步地,所述聚丙烯为高熔体强度聚丙烯,高熔体强度聚丙烯的分子量分布Mw/Mn=12-13。
进一步地,所述聚丙烯的熔体流动速率为70-90g/10min。
进一步地,所述发泡剂为偶氮二甲酰胺。
进一步地,所述稳泡剂为硅酮酰胺。
进一步地,所述紫外线吸收剂为单苯甲酸间苯二酚酯。
本发明还提供一种高性能发泡聚丙烯材料的制备方法,包括以下步骤:
S1:将聚丙烯和二氧化硅加热搅拌,制得制得混合物Ⅰ;
S2:向步骤S1制得的混合物Ⅰ中添加聚硅氧烷氨酯丙烯酸酯份、六溴环三聚磷腈、2-氰基丙烯酸甲酯、硬脂酸镁、乙撑基双硬脂酰胺、紫外线吸收剂,然后加热搅拌,制得混合物Ⅱ;
S3:将步骤S2制得的混合物Ⅱ通过主喂料口加入到挤出机中,通过侧喂料方式加入发泡剂、稳泡剂,经挤出发泡,制得高性能发泡聚丙烯材料。
进一步地,步骤S1中加热搅拌,制得制得混合物Ⅰ的条件:在温度为86-100℃,转速为200-400r/min下搅拌15-25min,制得混合物Ⅰ。
进一步地,步骤S2中加热搅拌,制得混合物Ⅱ的条件:在温度为130-140℃,转速为200-300r/min下搅拌25-40min,制得混合物Ⅱ。
本发明具有以下有益效果:
(1)本发明制得的发泡聚丙烯材料阻燃性能和机械性能优异,氧指数达到40.6%以上,断裂伸长率达15.62%以上,能满足应用需求。
(2)本发明的制备原料聚硅氧烷氨酯丙烯酸酯、六溴环三聚磷腈、2-氰基丙烯酸甲酯、硬脂酸镁、乙撑基双硬脂酰胺在制备发泡聚丙烯材料中起到了协同作用,协同提高了发泡聚丙烯材料的阻燃性能和断裂伸长率。
(3)本发明的制备方法简易,容易实现产业化,可在包装、汽车、家具、建筑、玩具等领域推广应用。
具体实施方式
为便于更好地理解本发明,通过以下实例加以说明,这些实例属于本发明的保护范围,但不限制本发明的保护范围。
在实施例中,高性能发泡聚丙烯材料,以重量份为单位,包括以下原料:聚丙烯70-92份、二氧化硅2-4份、聚硅氧烷氨酯丙烯酸酯3-6份、六溴环三聚磷腈1-2份、2-氰基丙烯酸甲酯3-5份、硬脂酸镁0.3-0.7份、乙撑基双硬脂酰胺0.4-0.9份、发泡剂0.5-1份、稳泡剂0.2-0.4份、紫外线吸收剂0.1-0.2份;
所述聚丙烯为高熔体强度聚丙烯,高熔体强度聚丙烯的分子量分布Mw/Mn=12-13;
所述聚丙烯的熔体流动速率为70-90g/10min;
所述发泡剂为偶氮二甲酰胺;
所述稳泡剂为硅酮酰胺;
所述紫外线吸收剂为单苯甲酸间苯二酚酯;
所述高性能发泡聚丙烯材料的制备方法,包括以下步骤:
S1:将聚丙烯和二氧化硅在温度为86-100℃,转速为200-400r/min下搅拌15-25min,制得混合物Ⅰ;
S2:向步骤S1制得的混合物Ⅰ中添加聚硅氧烷氨酯丙烯酸酯份、六溴环三聚磷腈、2-氰基丙烯酸甲酯、硬脂酸镁、乙撑基双硬脂酰胺、紫外线吸收剂,在温度为130-140℃,转速为200-300r/min下搅拌25-40min,制得混合物Ⅱ;
S3:将步骤S2制得的混合物Ⅱ通过主喂料口加入到挤出机中,通过侧喂料方式加入发泡剂、稳泡剂,经挤出发泡,制得高性能发泡聚丙烯材料。
实施例1
一种高性能发泡聚丙烯材料,以重量份为单位,包括以下原料:聚丙烯73份、二氧化硅2份、聚硅氧烷氨酯丙烯酸酯3份、六溴环三聚磷腈1份、2-氰基丙烯酸甲酯3份、硬脂酸镁0.3份、乙撑基双硬脂酰胺0.4份、发泡剂0.5份、稳泡剂0.2份、紫外线吸收剂0.1份;
所述聚丙烯为高熔体强度聚丙烯,高熔体强度聚丙烯的分子量分布Mw/Mn=12;
所述聚丙烯的熔体流动速率为80g/10min;
所述发泡剂为偶氮二甲酰胺;
所述稳泡剂为硅酮酰胺;
所述紫外线吸收剂为单苯甲酸间苯二酚酯;
所述高性能发泡聚丙烯材料的制备方法,包括以下步骤:
S1:将聚丙烯和二氧化硅在温度为88℃,转速为200r/min下搅拌25min,制得混合物Ⅰ;
S2:向步骤S1制得的混合物Ⅰ中添加聚硅氧烷氨酯丙烯酸酯份、六溴环三聚磷腈、2-氰基丙烯酸甲酯、硬脂酸镁、乙撑基双硬脂酰胺、紫外线吸收剂,在温度为130℃,转速为200r/min下搅拌40min,制得混合物Ⅱ;
S3:将步骤S2制得的混合物Ⅱ通过主喂料口加入到挤出机中,通过侧喂料方式加入发泡剂、稳泡剂,经挤出发泡,制得高性能发泡聚丙烯材料。
实施例2
一种高性能发泡聚丙烯材料,以重量份为单位,包括以下原料:聚丙烯85份、二氧化硅3份、聚硅氧烷氨酯丙烯酸酯5份、六溴环三聚磷腈1.6份、2-氰基丙烯酸甲酯4份、硬脂酸镁0.5份、乙撑基双硬脂酰胺0.7份、发泡剂0.8份、稳泡剂0.3份、紫外线吸收剂0.2份;
所述聚丙烯为高熔体强度聚丙烯,高熔体强度聚丙烯的分子量分布Mw/Mn=13;
所述聚丙烯的熔体流动速率为90g/10min;
所述发泡剂为偶氮二甲酰胺;
所述稳泡剂为硅酮酰胺;
所述紫外线吸收剂为单苯甲酸间苯二酚酯;
所述高性能发泡聚丙烯材料的制备方法,包括以下步骤:
S1:将聚丙烯和二氧化硅在温度为100℃,转速为400r/min下搅拌15min,制得混合物Ⅰ;
S2:向步骤S1制得的混合物Ⅰ中添加聚硅氧烷氨酯丙烯酸酯份、六溴环三聚磷腈、2-氰基丙烯酸甲酯、硬脂酸镁、乙撑基双硬脂酰胺、紫外线吸收剂,在温度为140℃,转速为300r/min下搅拌25min,制得混合物Ⅱ;
S3:将步骤S2制得的混合物Ⅱ通过主喂料口加入到挤出机中,通过侧喂料方式加入发泡剂、稳泡剂,经挤出发泡,制得高性能发泡聚丙烯材料。
实施例3
一种高性能发泡聚丙烯材料,以重量份为单位,包括以下原料:聚丙烯90份、二氧化硅3份、聚硅氧烷氨酯丙烯酸酯5份、六溴环三聚磷腈2份、2-氰基丙烯酸甲酯5份、硬脂酸镁0.7份、乙撑基双硬脂酰胺0.8份、发泡剂1份、稳泡剂0.4份、紫外线吸收剂0.2份;
所述聚丙烯为高熔体强度聚丙烯,高熔体强度聚丙烯的分子量分布Mw/Mn=12;
所述聚丙烯的熔体流动速率为80g/10min;
所述发泡剂为偶氮二甲酰胺;
所述稳泡剂为硅酮酰胺;
所述紫外线吸收剂为单苯甲酸间苯二酚酯;
所述高性能发泡聚丙烯材料的制备方法,包括以下步骤:
S1:将聚丙烯和二氧化硅在温度为96℃,转速为300r/min下搅拌20min,制得混合物Ⅰ;
S2:向步骤S1制得的混合物Ⅰ中添加聚硅氧烷氨酯丙烯酸酯份、六溴环三聚磷腈、2-氰基丙烯酸甲酯、硬脂酸镁、乙撑基双硬脂酰胺、紫外线吸收剂,在温度为135℃,转速为200r/min下搅拌32min,制得混合物Ⅱ;
S3:将步骤S2制得的混合物Ⅱ通过主喂料口加入到挤出机中,通过侧喂料方式加入发泡剂、稳泡剂,经挤出发泡,制得高性能发泡聚丙烯材料。
对比例1
与实施例2的制备工艺基本相同,唯有不同的是制备高性能发泡聚丙烯材料的原料中缺少聚硅氧烷氨酯丙烯酸酯份、六溴环三聚磷腈、2-氰基丙烯酸甲酯、硬脂酸镁、乙撑基双硬脂酰胺。
对比例2
与实施例2的制备工艺基本相同,唯有不同的是制备高性能发泡聚丙烯材料的原料中缺少聚硅氧烷氨酯丙烯酸酯份。
对比例3
与实施例2的制备工艺基本相同,唯有不同的是制备高性能发泡聚丙烯材料的原料中缺少六溴环三聚磷腈。
对比例4
与实施例2的制备工艺基本相同,唯有不同的是制备高性能发泡聚丙烯材料的原料中缺少2-氰基丙烯酸甲酯。
对比例5
与实施例2的制备工艺基本相同,唯有不同的是制备高性能发泡聚丙烯材料的原料中缺少硬脂酸镁。
对比例6
与实施例2的制备工艺基本相同,唯有不同的是制备高性能发泡聚丙烯材料的原料中缺少乙撑基双硬脂酰胺。
对实施例1-3和对比例1-6制得的发泡聚丙烯材料进行氧指数和断裂伸长率检测,其中氧指数采用ISO 4589标准检测,断裂伸长率采用ISO 527标准检测,结果如下表所示。
实验项目 | 氧指数(%) | 断裂伸长率(%) |
实施例1 | 41.3 | 15.62 |
实施例2 | 43.1 | 16.03 |
实施例3 | 40.6 | 15.86 |
对比例1 | 18.2 | 8.91 |
对比例2 | 38.7 | 15.37 |
对比例3 | 38.3 | 15.54 |
对比例4 | 39.2 | 14.83 |
对比例5 | 39.8 | 15.12 |
对比例6 | 39.4 | 14.96 |
由上表可知:(1)由实施例1-3的数据可见,实施例2为最优实施例,本发明制得的发泡聚丙烯材料的氧指数达到40.6%以上,断裂伸长率达15.62%以上,可见发泡聚丙烯材料的阻燃性能和机械性能优异,能满足应用需求。
(2)由实施例2和对比例1-6的数据可见,聚硅氧烷氨酯丙烯酸酯、六溴环三聚磷腈、2-氰基丙烯酸甲酯、硬脂酸镁、乙撑基双硬脂酰胺在制备发泡聚丙烯材料中起到了协同作用,协同提高了发泡聚丙烯材料的阻燃性能和断裂伸长率;这是:一方面聚硅氧烷氨酯丙烯酸酯含有硅氧键,当发泡聚丙烯材料被点燃时,硅氧烷快速铺盖到发泡聚丙烯材料的表面,起到保护层作用,使发泡聚丙烯材料隔热、隔氧,从而阻止其燃烧。另一方面,六溴环三聚磷腈具有Br-P-N的协同效应,其与聚硅氧烷氨酯丙烯酸酯配合使用,可大大提高发泡聚丙烯材料的阻燃效果,进而提高发泡聚丙烯材料的氧指数。2-氰基丙烯酸甲酯可改善发泡聚丙烯材料的黏结层韧性,另外硬脂酸镁可降低2-氰基丙烯酸甲酯的热膨胀性能,乙撑基双硬脂酰胺的加入,可以提高聚硅氧烷氨酯丙烯酸酯、六溴环三聚磷腈、2-氰基丙烯酸甲酯和硬脂酸镁之间的的分散性、相容性和加工流动性,使得组分原料之间混合得更加均匀,形成网络结构,提高发泡聚丙烯材料体系界面粘结力,进而提高发泡聚丙烯材料的断裂伸长率。
以上内容不能认定本发明具体实施只局限于这些说明,对于本发明所属技术领域的普通技术人员来说,在不脱离本发明构思前提下,还可以做出若干简单推演或替换,都应当视为属于本发明由所提交的权利要求书确定的专利保护范围。
Claims (10)
1.一种高性能发泡聚丙烯材料,其特征在于,以重量份为单位,包括以下原料:聚丙烯70-92份、二氧化硅2-4份、聚硅氧烷氨酯丙烯酸酯3-6份、六溴环三聚磷腈1-2份、2-氰基丙烯酸甲酯3-5份、硬脂酸镁0.3-0.7份、乙撑基双硬脂酰胺0.4-0.9份、发泡剂0.5-1份、稳泡剂0.2-0.4份、紫外线吸收剂0.1-0.2份。
2.根据权利要求1所述的高性能发泡聚丙烯材料,其特征在于,以重量份为单位,包括以下原料:聚丙烯85份、二氧化硅3份、聚硅氧烷氨酯丙烯酸酯5份、六溴环三聚磷腈1.6份、2-氰基丙烯酸甲酯4份、硬脂酸镁0.5份、乙撑基双硬脂酰胺0.7份、发泡剂0.8份、稳泡剂0.3份、紫外线吸收剂0.2份。
3.根据权利要求1或2所述的高性能发泡聚丙烯材料,其特征在于,所述聚丙烯为高熔体强度聚丙烯,高熔体强度聚丙烯的分子量分布Mw/Mn=12-13。
4.根据权利要求3所述的高性能发泡聚丙烯材料,其特征在于,所述聚丙烯的熔体流动速率为70-90g/10min。
5.根据权利要求1或2所述的高性能发泡聚丙烯材料,其特征在于,所述发泡剂为偶氮二甲酰胺。
6.根据权利要求1或2所述的高性能发泡聚丙烯材料,其特征在于,所述稳泡剂为硅酮酰胺。
7.根据权利要求1或2所述的高性能发泡聚丙烯材料,其特征在于,所述紫外线吸收剂为单苯甲酸间苯二酚酯。
8.一种根据权利要求1-7任一项所述的高性能发泡聚丙烯材料的制备方法,其特征在于,包括以下步骤:
S1:将聚丙烯和二氧化硅加热搅拌,制得制得混合物Ⅰ;
S2:向步骤S1制得的混合物Ⅰ中添加聚硅氧烷氨酯丙烯酸酯份、六溴环三聚磷腈、2-氰基丙烯酸甲酯、硬脂酸镁、乙撑基双硬脂酰胺、紫外线吸收剂,然后加热搅拌,制得混合物Ⅱ;
S3:将步骤S2制得的混合物Ⅱ通过主喂料口加入到挤出机中,通过侧喂料方式加入发泡剂、稳泡剂,经挤出发泡,制得高性能发泡聚丙烯材料。
9.根据权利要求8所述的高性能发泡聚丙烯材料的制备方法,其特征在于,步骤S1中加热搅拌,制得制得混合物Ⅰ的条件:在温度为86-100℃,转速为200-400r/min下搅拌15-25min,制得混合物Ⅰ。
10.根据权利要求8所述的高性能发泡聚丙烯材料的制备方法,其特征在于,步骤S2中加热搅拌,制得混合物Ⅱ的条件:在温度为130-140℃,转速为200-300r/min下搅拌25-40min,制得混合物Ⅱ。
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