CN113234320A - 一种抗老化隔热条及其制备工艺 - Google Patents
一种抗老化隔热条及其制备工艺 Download PDFInfo
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Abstract
本发明涉及隔热条制备技术领域,具体涉及一种抗老化隔热条及其制备工艺;按重量份计包含以下组分:100~120份改性PA66纤维、25~40份玻璃纤维、10~20份高抗冲聚苯乙烯、1.5~2.3份柠檬酸三正丁酯、6~10份相容剂POE、0.8~1.2份抗氧化剂、2.5~3.6份纳米粉体、8~12份保温添加剂及3~6份硅酮母粒;通过本发明提供的技术方案所制备的隔热条不仅具有很好的抗紫外及抗老化性能;而且还具有很好的保温性能及力学性能;有效地保证了隔热条品质的同时,还能在一定程度上延长其使用寿命。
Description
技术领域
本发明涉及隔热条制备技术领域,具体涉及一种抗老化隔热条及其制备工艺。
背景技术
隔热条是穿条隔热型材的核心构件,它即是铝型材中热量传递路径上的“断桥”,减少热量在铝型材部位的传递;又是隔热型材中两侧铝型材的结构连接件,通过它的连接使得隔热型材的三个部分成为一个整体,共同承受荷载。它与胶条不同,是通过机械滚压制成新的复合材料,不能单独更换,更换只能整根型材一起更换。
目前,隔热条大都以尼龙66及玻璃纤维作为主要原料。原因在于:由于尼龙66具有蠕变特性,即在一定的外应力作用下,其形变随时间增加而增加的现象。为了抑制尼龙66的蠕变性,实验已经证明,经玻纤增强后的尼龙66在强度、刚性和热变形温度方面与铝合金相当。避免了由于热胀冷缩作用导致隔热条从型材间脱落的危险。
通过现有工艺生产的隔热条虽然具有一定的隔热性能,但是其隔热效果相对较差,仍需进一步改善或提高。再者,其本身的抗老化性能也相对较差,这不仅缩短了其使用寿命,而且也影响了其品质。
基于此,提供一种抗老化隔热条及其制备工艺,成为本领域技术人员亟待解决的技术问题。
发明内容
针对现有技术所存在的上述缺点,本发明的第一目的在于提供一种抗老化隔热条,其不仅具有很好的抗紫外及抗老化性能,而且具有很好的保温性能及力学性能;有效地保证了隔热条品质的同时,还能在一定程度上延长其使用寿命。
为实现上述目的,本发明提供了如下技术方案:
一种抗老化隔热条,按重量份计包含以下组分:100~120份改性PA66纤维、25~40份玻璃纤维、10~20份高抗冲聚苯乙烯、1.5~2.3份柠檬酸三正丁酯、6~10份相容剂POE、0.8~1.2份抗氧化剂、2.5~3.6份纳米粉体、8~12份保温添加剂及3~6份硅酮母粒。
通过采用上述技术方案:本发明中以改性PA66纤维、玻璃纤维及高抗冲聚苯乙烯作为制备隔热条的原料,不仅能有效地提高隔热条的力学性能。而且,在玻璃纤维及保温添加剂的相互协同的作用下,使得所制备的隔热条具有很好的隔热性能。另外,本发明通过对PA66纤维进行化学改性,并配合纳米粉体及抗氧化剂的使用,使得所制备的隔热条具有很好的抗紫外及抗老化性能,不仅有效地延长了隔热条的使用寿命,也显著地改善了其品质。
本发明进一步设置为:所述抗氧化剂选用抗氧化剂1076、抗氧化剂1098或抗氧化剂1010中的任意一种。
通过采用上述技术方案:抗氧化剂能有效地提高隔热条的抗氧化及抗老化性能,在一定程度上延长了的隔热条的使用寿命,保证了其品质。
本发明进一步设置为:所述纳米粉体由纳米二氧化钛、纳米氧化铈及纳米氧化锌按照质量比1:0.4~0.6:1.2~1.6混合制备而成。
通过采用上述技术方案:纳米粉体既能反射、散射紫外线,又能吸收紫外线,对紫外线有更强的阻隔能力;其用作制备隔热条的原料,能有效地提高隔热条的抗紫外性能及抗老化性能。
本发明进一步设置为:所述保温添加剂的制备方法为:
按照重量份计,分别称取80~100份的莫来石纤维、6~10份的闭孔珍珠岩及8~15份空心玻璃微珠;并将莫来石纤维粉碎研磨至30~60μm,然后将莫来石纤维微粉投入滚球设备中滚动成型,所得微球表面涂覆一层液体硅酸钠,然后将混合均匀后的闭孔珍珠岩及空心玻璃微珠微粉均匀涂覆在微球表面,然后在60~70℃的温度下球滚成型70~90min,所得固体微球即为保温添加剂。
通过采用上述技术方案:本发明中以莫来石纤维、闭孔珍珠岩、空心玻璃微珠及液体硅酸钠作为制备保温添加剂的原料,所制备的保温添加剂由内而外依次为莫来石纤维层-闭孔珍珠岩、空心玻璃微珠复合层-莫来石纤维层;使得所制备的保温添加剂不仅保温效果相对较好,而且其密度相对较小,质量较轻,有效地减轻了其自重。
本发明进一步设置为:所述改性PA66纤维的制备方法包括以下步骤:
称取适量的PA66纤维,并用适量的乙醇将其表面清洗干净,然后转入60~80℃的干燥设备中对其进行干燥处理;将干燥后的PA66纤维投入混合液中;经超声分散均匀后,再分别向所得的混合组分中投入适量的有机改性剂及偶联剂;所得混合组分的温度升至45~60℃,并将其pH调节至8.2~8.8,在此温度下浸渍24~30h;待浸渍完毕后,按照80~120g/L的标准向其中投入适量的[(6-氧代-6H-二苯并[c,e][1,2]氧磷杂己环-6-基)甲基]丁二酸,采用两浸两轧配合紫外线照射的整理工艺对PA66纤维进行浸轧整理;待浸轧完毕后即得改性PA66纤维成品;
其中,浸轧整理时预烘温度为75~85℃,时间为15~25min,焙烘温度为125~160℃,时间为2~5min。
通过采用上述技术方案:本发明通过将PA66纤维浸渍在含有乙醇溶液、单硬脂酸甘油酯及水溶性紫外线吸收剂的混合液中,在单硬脂酸甘油酯及超声分散的相互配合下,将水溶性紫外线吸收剂均匀地贴附在PA66纤维的表面,然后有机改性剂及[(6-氧代-6H-二苯并[c,e][1,2]氧磷杂己环-6-基)甲基]丁二酸在偶联剂的作用下与PA66纤维表面的活性基团发生反应而成键,于PA66纤维的表面形成三维网状结构,最终使得水溶性紫外线吸收剂被有效地“限制”在PA66表面的三维网状结构中,使其具有长效的抗紫外、抗老化性能。
本发明进一步设置为:所述混合溶液的制备方法为:向浓度为60~75%的乙醇溶液中分别投入质量为其2.5~3.8%的单硬脂酸甘油酯及8~12%的水溶性紫外线吸收剂;经超声分散均匀后,即得混合溶液成品。
通过采用上述技术方案:混合溶液中的单硬脂酸甘油酯使得水溶性紫外线吸收剂能均匀地分散在乙醇溶液中,进而保证水溶性紫外线吸收剂能均匀地附着在PA66纤维的表面;以提高PA66纤维的抗紫外及抗老化性能。
本发明进一步设置为:所述水溶性紫外线吸收剂选用苯基苯并咪唑磺酸或2-羟基4-甲氧基二苯甲酮磺酸中的任意一种。
通过采用上述技术方案:通过选用水溶性紫外线吸收剂,使得其能充分地溶解在乙醇溶液中,进而有利于后续对其进行超声分散,使其均匀地附着在PA66纤维的表面;便于后续对PA66纤维的化学改性处理。
本发明进一步设置为:所述有机改性剂选用3、4-二羟苯乙胺,且混合组分中有机改性剂的浓度为2.5~4.8g/L。
通过采用上述技术方案:有机改性剂在偶联剂的作用下,能与PA66纤维表面的活性基团因发生化学反应而成键,有利于对PA66进行化学改性。
本发明进一步设置为:所述偶联剂选用γ-巯丙基三乙氧基硅烷、γ-氨丙基三乙氧基硅烷或γ-巯丙基三甲氧基硅烷中的任意一种,且混合组分中偶联剂的浓度为50~100g/L。
通过采用上述技术方案:偶联剂的使用能在对PA66纤维的改性过程中起到“媒介”的作用,保证对PA66纤维改性的顺利进行。以改善PA66的化学性能。
本发明的第二目的在于提供一种抗老化隔热条的制备工艺,包括以下步骤:
S1、按照上述配方量,分别准确称取各原料;然后将相容剂POE及高抗冲聚苯乙烯混合搅拌均匀后,转入开炼机中进行开练共混;然后对所得的物料进行切粒处理;保存,备用;
S2、切粒后所得的物料与改性PA66纤维、硅酮母粒及抗氧化剂进行搅拌混合;并将所得混合物料与玻璃纤维及剩余原料进行熔融共混挤出造粒;
S3、步骤S2中所得的颗粒状物料经烘干处理后,转入螺杆挤出机中进行熔融共混挤出;然后在牵引机的牵引下通过模具定型,所得即为抗老化隔热条成品。
通过采用上述技术方案:本发明所制备的隔热条不仅具有很好的抗紫外及抗老化性能,而且具有很好的保温性能及力学性能;有效地保证了隔热条品质的同时,还能在一定程度上延长其使用寿命。
有益效果
采用本发明提供的技术方案,与已知的公有技术相比,具有如下有益效果:
1、本发明通过将PA66纤维浸渍在含有乙醇溶液、单硬脂酸甘油酯及水溶性紫外线吸收剂的混合液中,在单硬脂酸甘油酯及超声分散的相互配合下,将水溶性紫外线吸收剂均匀地贴附在PA66纤维的表面,然后有机改性剂及[(6-氧代-6H-二苯并[c,e][1,2]氧磷杂己环-6-基)甲基]丁二酸在偶联剂的作用下与PA66纤维表面的活性基团发生反应而成键,于PA66纤维的表面形成三维网状结构,最终使得水溶性紫外线吸收剂被有效地“限制”在PA66表面的三维网状结构中,使其具有长效抗老化性能。所得的改性PA66纤维、抗氧化剂及纳米粉体用作制备隔热条的原料,有效地提高了隔热条的抗紫外、抗老化性能,延长了其使用寿命的同时也改善了其质量;
2、本发明中所制备的保温添加剂由内而外依次为莫来石纤维层-闭孔珍珠岩、空心玻璃微珠复合层-莫来石纤维层,其与玻璃纤维之间相互协同配合,使得所制备的隔热条不仅具有相对较好的保温效果,而且其密度相对较小,质量较轻,能在一定程度上减轻隔热条产品的自重;
3、本发明中以改性PA66纤维、玻璃纤维、高抗冲聚苯乙烯作为制备隔热条的原料,使得所制备的隔热条具有很好的力学性能,有效地改善了其品质和质量。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,下面将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。
下面结合实施例对本发明作进一步的描述。
实施例1
一种抗老化隔热条,按重量份计包含以下组分:100份改性PA66纤维、25份玻璃纤维、10份高抗冲聚苯乙烯、1.5份柠檬酸三正丁酯、6份相容剂POE、0.8份抗氧化剂、2.5份纳米粉体、8份保温添加剂及3份硅酮母粒。
抗氧化剂选用抗氧化剂1076。
纳米粉体由纳米二氧化钛、纳米氧化铈及纳米氧化锌按照质量比1:0.4:1.2混合制备而成。
保温添加剂的制备方法为:
按照重量份计,分别称取80份的莫来石纤维、6份的闭孔珍珠岩及8份空心玻璃微珠;并将莫来石纤维粉碎研磨至30μm,然后将莫来石纤维微粉投入滚球设备中滚动成型,所得微球表面涂覆一层液体硅酸钠,然后将混合均匀后的闭孔珍珠岩及空心玻璃微珠微粉均匀涂覆在微球表面,然后在60℃的温度下球滚成型70min,所得固体微球即为保温添加剂。
改性PA66纤维的制备方法包括以下步骤:
称取适量的PA66纤维,并用适量的乙醇将其表面清洗干净,然后转入60℃的干燥设备中对其进行干燥处理;将干燥后的PA66纤维投入混合液中;经超声分散均匀后,再分别向所得的混合组分中投入适量的有机改性剂及偶联剂;所得混合组分的温度升至45℃,并将其pH调节至8.2,在此温度下浸渍24h;待浸渍完毕后,按照80g/L的标准向其中投入适量的[(6-氧代-6H-二苯并[c,e][1,2]氧磷杂己环-6-基)甲基]丁二酸,采用两浸两轧配合紫外线照射的整理工艺对PA66纤维进行浸轧整理;待浸轧完毕后即得改性PA66纤维成品;
其中,浸轧整理时预烘温度为75℃,时间为15min,焙烘温度为125℃,时间为2min。
混合溶液的制备方法为:向浓度为60%的乙醇溶液中分别投入质量为其2.5%的单硬脂酸甘油酯及8%的水溶性紫外线吸收剂;经超声分散均匀后,即得混合溶液成品;水溶性紫外线吸收剂选用苯基苯并咪唑磺酸;
有机改性剂选用3、4-二羟苯乙胺,且混合组分中有机改性剂的浓度为2.5g/L;
偶联剂选用γ-巯丙基三乙氧基硅烷,且混合组分中偶联剂的浓度为50g/L;
一种抗老化隔热条的制备工艺,包括以下步骤:
S1、按照上述配方量,分别准确称取各原料;然后将相容剂POE及高抗冲聚苯乙烯混合搅拌均匀后,转入开炼机中进行开练共混;然后对所得的物料进行切粒处理;保存,备用;
S2、切粒后所得的物料与改性PA66纤维、硅酮母粒及抗氧化剂进行搅拌混合;并将所得混合物料与玻璃纤维及剩余原料进行熔融共混挤出造粒;
S3、步骤S2中所得的颗粒状物料经烘干处理后,转入螺杆挤出机中进行熔融共混挤出;然后在牵引机的牵引下通过模具定型,所得即为抗老化隔热条成品。
实施例2
抗老化隔热条的制备工艺与实施例1相似,不同的是其所用原料的配比不同;具体为:110份改性PA66纤维、35份玻璃纤维、15份高抗冲聚苯乙烯、2.0份柠檬酸三正丁酯、8份相容剂POE、1.0份抗氧化剂1098、3.0份纳米粉体、10份保温添加剂及4份硅酮母粒;
其中,纳米粉体由纳米二氧化钛、纳米氧化铈及纳米氧化锌按照质量比1:0.5:1.4混合制备而成。
按照重量份计,保温添加剂中的45μm的莫来石纤维为90份、闭孔珍珠岩8份及空心玻璃微珠12份;
在制备改性PA66纤维的工序中,混合溶液中单硬脂酸甘油酯及的水溶性紫外线吸收剂的用量分别为乙醇溶液的3.2%及10%;且水溶性紫外线吸收剂选用2-羟基4-甲氧基二苯甲酮磺酸;有机改性剂选用3、4-二羟苯乙胺,且混合组分中有机改性剂的浓度为3.6g/L。
偶联剂选用γ-氨丙基三乙氧基硅烷且混合组分中偶联剂的浓度为80g/L。
实施例3
抗老化隔热条的制备工艺与实施例1相似,不同的是其所用原料的配比不同;具体为:120份改性PA66纤维、40份玻璃纤维、20份高抗冲聚苯乙烯、2.3份柠檬酸三正丁酯、10份相容剂POE、1.2份抗氧化剂1010、3.6份纳米粉体、12份保温添加剂及6份硅酮母粒;
其中,纳米粉体由纳米二氧化钛、纳米氧化铈及纳米氧化锌按照质量比1:0.6:1.6混合制备而成;
按照重量份计,保温添加剂中的60μm的莫来石纤维为100份、闭孔珍珠岩10份及空心玻璃微珠15份;
在制备改性PA66纤维的工序中,混合溶液中单硬脂酸甘油酯及的水溶性紫外线吸收剂的用量分别为乙醇溶液的3.8%及12%;且水溶性紫外线吸收剂选用苯基苯并咪唑磺酸;
有机改性剂选用3、4-二羟苯乙胺,且混合组分中有机改性剂的浓度为4.8g/L;
偶联剂选用γ-巯丙基三甲氧基硅烷且混合组分中偶联剂的浓度为100g/L。
对比例1:通过本发明中实施例1制备出的抗老化隔热条,不同之处在于其原料中所用PA66纤维为市售的、未经本发明所提供的技术方案进行化学改性的普通PA66纤维;
对比例2:通过本发明中实施例1制备出的抗老化隔热条,不同之处在于其原料中用等量的闭孔珍珠岩及空心玻璃微珠替代本申请中所提供的保温添加剂;
性能测试
分别将通过本发明中实施例1~3制备的抗老化隔热条记做实验例1~3;通过对比例1及对比例2制备的抗老化隔热条分别记做对比例1及对比例2;然后分别选择实验例1~3和对比例1及对比例2制备的抗老化隔热条各一份,对其各性能进行测试,所得数据记录于表1及表2;
表1
注:线性膨胀系数的检测标准参见GB/T23615.1-2009;
通过对比表1中各对比例及实施例的相关数据可知:实验例1~3所提供的抗老化隔热条的线性膨胀系数明显小于对比例1~2所提供的抗老化隔热条的线性膨胀系数。表明,本发明所制备的抗老化隔热条的隔热性能明显优于对比例。另外,由表中的相关数据可知,本发明所制备的保温添加剂的密度较小,能在一定程度上减小抗老化隔热条的密度,从而减小其自重。
表2
通过对比表2中各对比例及实施例的相关数据可知:在经过相同的老化实验操作后,实验例1~3所提供的抗老化隔热条的力学性能缩减程度明显小于对比例1~2所提供的抗老化隔热条。如此,表明本发明制备的隔热条的抗老化性能明显优于对比例1~2所提供的抗老化隔热条,其不仅具有很好的抗紫外及抗老化性能,而且具有很好的保温性能及力学性能;且在有效地保证了隔热条品质的同时,可在一定程度上延长其使用寿命。
相较于原有的隔热条,表明本发明制备的抗老化隔热条具有更广阔的市场前景,更适宜推广。
以上实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不会使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。
Claims (10)
1.一种抗老化隔热条,其特征在于,按重量份计包含以下组分:100~120份改性PA66纤维、25~40份玻璃纤维、10~20份高抗冲聚苯乙烯、1.5~2.3份柠檬酸三正丁酯、6~10份相容剂POE、0.8~1.2份抗氧化剂、2.5~3.6份纳米粉体、8~12份保温添加剂及3~6份硅酮母粒。
2.根据权利要求1所述的一种抗老化隔热条,其特征在于:所述抗氧化剂选用抗氧化剂1076、抗氧化剂1098或抗氧化剂1010中的任意一种。
3.根据权利要求1所述的一种抗老化隔热条,其特征在于:所述纳米粉体由纳米二氧化钛、纳米氧化铈及纳米氧化锌按照质量比1:0.4~0.6:1.2~1.6混合制备而成。
4.根据权利要求1所述的一种抗老化隔热条,其特征在于,所述保温添加剂的制备方法为:
按照重量份计,分别称取80~100份的莫来石纤维、6~10份的闭孔珍珠岩及8~15份空心玻璃微珠;并将莫来石纤维粉碎研磨至30~60μm,然后将莫来石纤维微粉投入滚球设备中滚动成型,所得微球表面涂覆一层液体硅酸钠,然后将混合均匀后的闭孔珍珠岩及空心玻璃微珠微粉均匀涂覆在微球表面,然后在60~70℃的温度下球滚成型70~90min,所得固体微球即为保温添加剂。
5.根据权利要求1所述的一种抗老化隔热条,其特征在于,所述改性PA66纤维的制备方法包括以下步骤:
称取适量的PA66纤维,并用适量的乙醇将其表面清洗干净,然后转入60~80℃的干燥设备中对其进行干燥处理;将干燥后的PA66纤维投入混合液中;经超声分散均匀后,再分别向所得的混合组分中投入适量的有机改性剂及偶联剂;所得混合组分的温度升至45~60℃,并将其pH调节至8.2~8.8,在此温度下浸渍24~30h;待浸渍完毕后,按照80~120g/L的标准向其中投入适量的[(6-氧代-6H-二苯并[c,e][1,2]氧磷杂己环-6-基)甲基]丁二酸,采用两浸两轧配合紫外线照射的整理工艺对PA66纤维进行浸轧整理;待浸轧完毕后即得改性PA66纤维成品;
其中,浸轧整理时预烘温度为75~85℃,时间为15~25min,焙烘温度为125~160℃,时间为2~5min。
6.根据权利要求5所述的一种抗老化隔热条,其特征在于,所述混合溶液的制备方法为:向浓度为60~75%的乙醇溶液中分别投入质量为其2.5~3.8%的单硬脂酸甘油酯及8~12%的水溶性紫外线吸收剂;经超声分散均匀后,即得混合溶液成品。
7.根据权利要求6所述的一种抗老化隔热条,其特征在于:所述水溶性紫外线吸收剂选用苯基苯并咪唑磺酸或2-羟基4-甲氧基二苯甲酮磺酸中的任意一种。
8.根据权利要求5所述的一种抗老化隔热条,其特征在于:所述有机改性剂选用3、4-二羟苯乙胺,且混合组分中有机改性剂的浓度为2.5~4.8g/L。
9.根据权利要求5所述的一种抗老化隔热条,其特征在于:所述偶联剂选用γ-巯丙基三乙氧基硅烷、γ-氨丙基三乙氧基硅烷或γ-巯丙基三甲氧基硅烷中的任意一种,且混合组分中偶联剂的浓度为50~100g/L。
10.根据权利要求1~9中任一项所述的一种抗老化隔热条的制备工艺,其特征在于,包括以下步骤:
S1、按照上述配方量,分别准确称取各原料;然后将相容剂POE及高抗冲聚苯乙烯混合搅拌均匀后,转入开炼机中进行开练共混;然后对所得的物料进行切粒处理;保存,备用;
S2、切粒后所得的物料与改性PA66纤维、硅酮母粒及抗氧化剂进行搅拌混合;并将所得混合物料与玻璃纤维及剩余原料进行熔融共混挤出造粒;
S3、步骤S2中所得的颗粒状物料经烘干处理后,转入螺杆挤出机中进行熔融共混挤出;然后在牵引机的牵引下通过模具定型,所得即为抗老化隔热条成品。
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