CN104589425A - 一种卫浴专用防水竹木复合板及其制造方法 - Google Patents

一种卫浴专用防水竹木复合板及其制造方法 Download PDF

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CN104589425A
CN104589425A CN201410778067.8A CN201410778067A CN104589425A CN 104589425 A CN104589425 A CN 104589425A CN 201410778067 A CN201410778067 A CN 201410778067A CN 104589425 A CN104589425 A CN 104589425A
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罗继康
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Abstract

本发明涉及复合板技术领域,公开了一种卫浴专用防水竹木复合板,包括实木基层,所述实木基层上下表面均依次粘接竹纤维板和三聚氰胺浸渍纸。本发明还公开了上述竹木复合板的制造方法。本发明在实木基层上下表面各压贴竹木纤维板,再压贴三聚氰胺浸渍纸,由于竹木纤维吸水膨胀率低≤5.3%,在低温干燥环境(温度:-20℃~-40℃,湿度:15%~30%)不龟裂,防水性能好,成本低,能够替代多层实木三胺板广泛应用于北方低温干燥环境(温度:-20℃~-40℃,湿度:15%~30%)中,尤其适用于北方冬天暖气开/关形成的温度大反差环境。

Description

一种卫浴专用防水竹木复合板及其制造方法
技术领域
本发明涉及复合板技术领域,具体地说是一种卫浴专用防水竹木复合板及其制造方法。
背景技术
目前,家庭卫生间没有进行干湿分享设计,因此对浴室家具的防水性要求极高。
为了解决浴室家具的防水性,浴室家具所用板材一般是采用多层实木板表面压贴三聚氰胺浸渍纸形成的多层实木三胺板,多层实木板包括实木基层和实木面层,三聚氰胺浸渍纸压贴于实木面层,多层实木三胺板解决了实木的高成本性和工艺复杂性,能够有效进行防水,但实木面层抗拉力过强,导致三聚氰胺浸渍纸在环境温度(-20℃~-40℃)与湿度(15%-30%)差异过大时容易产生表面龟裂,无法适用于低温干燥(温度:-20℃~-40℃,湿度:15%~30%)的北方,尤其是北方冬天暖气开/关形成的温度大反差环境。
因此,亟需一种防水性能好、成本低、低温干燥条件下不易龟裂的复合板。
发明内容
本发明针对上述存在的问题,提供了提供一种卫浴专用防水竹木复合板及其制造方法。
本发明为实现上述目的,采取以下技术方案予以实现:
一种卫浴专用防水竹木复合板,包括实木基层,所述实木基层上下表面均依次粘接竹纤维板和三聚氰胺浸渍纸。
优选地,所述实木基层厚度为12mm。
优选地,所述竹纤维板厚度为1.8~2.0mm。
优选地,所述竹木复合板的吸水膨胀率≤5.3%。
本发明还公开上述卫浴专用防水竹木复合板的制造方法,包括以下步骤:
(1)竹木纤维分次与实木基层上下板面进行热压成型,竹木纤维板面与实木基层板面涂有三聚氰胺胶粘剂,每次热压温度:110℃~120℃,压力:13~15MPa,时间:45~50min;
(2)上下竹木纤维双面采用三聚氰胺浸渍纸压贴,温度:135℃~150℃,压力:6.0~8.0MPa,时间:40s~50s。
经过步骤(1)的热压成型,实木基层和竹木纤维结合紧密,不会分层。
优选地,所述竹木纤维通过以下步骤制得:
(1)备料:将毛竹削成竹片;
(2)纤维分离:将竹片置于质量百分比为1~5%的NaOH水溶液中浸泡1.5~3小时,接着把质量比为100:1的竹片和石蜡投入热磨机中,先在预热蒸汽压力为0.3~1.0MPa的条件下,预热时间10~15min,研磨时间3~5min进行纤维分离,然后进行干燥,控制纤维的含水率为6%~8%;
(3)施胶:将胶黏剂均匀喷撒到纤维上,施胶量为纤维重量的6%~12%;
(4)热压:热压温度150~200℃,热压时间以每毫米板厚为2.0-2.5min,热压压力为2.5~5.5MPa;
(5)制品:载边、砂光,得到成品竹木纤维。
成品密度为0.6~0.85g/cm3,其静曲强度可达24.5MPa以上,内胶合强度超过0.5MPa、弹性模量≥1960MPa,吸水膨胀率≤5.3%,远远低于普通材质的密度板的吸水彭胀率(常规密度板吸水彭胀率(12%~14%),防潮板吸水彭胀率(8%~10%)。
优选地,所述胶黏剂包括质量百分比的以下组分:三聚氰胺树脂94.7%、水溶性聚酯树脂3.8%、固化剂1.1-1.5%、余量为稀释剂。
优选地,所述固化剂为尿邻苯二甲酸;
优选地,所述稀释剂为质量百分比为70%的乙醇。
本发明的有益效果如下:本发明在实木基层上下表面各压贴竹木纤维板,再压贴三聚氰胺浸渍纸,由于竹木纤维吸水膨胀率低≤5.3%,在低温干燥环境(温度:-20℃~-40℃,湿度:15%~30%)不龟裂,防水性能好,成本低,能够替代多层实木三胺板广泛应用于北方低温干燥环境(温度:-20℃~-40℃,湿度:15%~30%)中,尤其适用于北方冬天暖气开/关形成的温度大反差环境。
附图说明
图1是本发明一种卫浴专用防水竹木复合板的结构示意图。
具体实施方式
以下结合具体实施例对本发明作进一步说明,但本发明的实施方式不限于此。
实施例1
参见图1,一种卫浴专用防水竹木复合板,包括实木基层1,实木基层1上下表面均依次粘接竹纤维板2和三聚氰胺浸渍纸3。
三聚氰胺浸渍纸3是原纸或印刷纸通过改性三聚氰胺树脂浸胶后形成的。
实木基层厚度为12mm,竹纤维板厚度为1.8~2.0mm。制得的竹木复合板的吸水膨胀率≤5.3%。
三聚氰胺浸渍纸3压贴在实木基层与竹纤维复合板面,具有防水性,同时也具有防龟裂性(实验条件:高温70℃干燥8h后低温-30℃,湿度15%~30%冷却12小时,循环2次)。
该竹木复合板吸水率低,在低温干燥环境(温度:-20℃~-40℃,湿度:15%~30%)不龟裂,可代替现在常用的多层实木三胺板(包括实木基层、实木面皮和三聚氰胺浸渍纸),彻底解决多层实木三胺板在低温干燥环境(温度:-20℃~-40℃,湿度:15%~30%)中开裂的质量问题。
实施例2
实施例1所述卫浴专用防水竹木复合板的制造方法,包括以下步骤:
(1)竹木纤维2分次与实木基层1上下板面进行热压成型,竹木纤维2板面与实木基层1板面涂有三聚氰胺胶粘剂,每次热压温度:110℃~120℃,压力:13~15MPa,时间:45~50min;
(2)上下竹木纤维2双面采用三聚氰胺浸渍纸3压贴,温度:135℃~150℃,压力:6.0~8.0MPa,时间:40s~50s。
经过步骤(1)的热压成型,实木基层1和竹木纤维2结合紧密,不会分层。
其中,竹木纤维2通过以下步骤制得:
(1)备料:将毛竹削成竹片;
(2)纤维分离:将竹片置于质量百分比为1~5%的NaOH水溶液中浸泡1.5~3小时,接着把质量比为100:1的竹片和石蜡投入热磨机中,先在预热蒸汽压力为0.3~1.0MPa的条件下,预热时间10~15min,研磨时间3~5min进行纤维分离,然后进行干燥,控制纤维的含水率为6%~8%;
(3)施胶:将胶黏剂均匀喷撒到纤维上,施胶量为纤维重量的6%~12%;
(4)热压:热压温度150~200℃,热压时间以每毫米板厚为2.0-2.5min,热压压力为2.5~5.5MPa;
(5)制品:载边、砂光,得到成品竹木纤维。
成品密度为0.6~0.85g/cm3,其静曲强度可达24.5MPa以上,内胶合强度超过0.5MPa、弹性模量≥1960MPa,吸水膨胀率≤5.3%,远远低于普通材质的密度板的吸水彭胀率(常规密度板吸水彭胀率(12%~14%),防潮板吸水彭胀率(8%~10%)。
步骤(3)中胶黏剂包括质量百分比的以下组分:三聚氰胺树脂94.7%、水溶性聚酯树脂3.8%、固化剂1.1-1.5%、余量为稀释剂。固化剂为尿邻苯二甲酸;稀释剂为质量百分比70%的乙醇。
将现有技术中的多层实木三胺板(实木基层、实木面层和三聚氰胺浸渍纸)和本发明的竹木复合板(实木基层、竹木纤维面层和三聚氰胺浸渍纸)分别进
行检测,检测数据如下表所示:
从上表可以看出,与多层实木三胺板相比,本发明的竹木复合板吸水厚度膨胀率较低,耐冷热循环、表面耐龟裂性能均较好。
本发明在实木基层上下表面各压贴竹木纤维板,再压贴三聚氰胺浸渍纸,由于竹木纤维吸水膨胀率低≤5.3%,在低温干燥环境(温度:-20℃~-40℃,湿度:15%~30%)不龟裂,能够替代多层实木三胺板广泛应用于北方低温干燥环境(温度:-20℃~-40℃,湿度:15%~30%)中,尤其适用于北方冬天暖气开/关形成的温度大反差环境。
惟以上所述者,仅为本发明之较佳实施例而已,当不能以此限定本发明之范围,即大凡依本发明权利要求及说明书所记载的内容所作出简单的等效变化与修饰,皆仍属本发明权利要求所涵盖范围之内。此外,摘要部分和标题仅是用来辅助专利文件搜寻之用,并非用来限制本发明之权利范围。

Claims (9)

1.一种卫浴专用防水竹木复合板,其特征在于,包括实木基层,所述实木基层上下表面均依次粘接竹纤维板和三聚氰胺浸渍纸。
2.根据权利要求1所述的一种卫浴专用防水竹木复合板,其特征在于,所述实木基层厚度为12mm。
3.根据权利要求1所述的一种卫浴专用防水竹木复合板,其特征在于,所述竹纤维板厚度为1.8~2.0mm。
4.根据权利要求1所述的一种卫浴专用防水竹木复合板,其特征在于,所述竹木复合板的吸水膨胀率≤5.3%。
5.一种权利要求1~4任一项所述的卫浴专用防水竹木复合板的制造方法,其特征在于,包括以下步骤:
(1)竹木纤维分次与实木基层上下板面进行热压成型,竹木纤维板面与实木基层板面涂有三聚氰胺胶粘剂,每次热压温度:110℃~120℃,压力:13~15MPa,时间:45~50min;
(2)上下竹木纤维双面采用三聚氰胺浸渍纸压贴,温度:135℃~150℃,压力:6.0~8.0MPa,时间:40s~50s。
6.根据权利要求5所述的一种卫浴专用防水竹木复合板的制造方法,其特征在于,所述竹木纤维通过以下步骤制得:
(1)备料:将毛竹削成竹片;
(2)纤维分离:将竹片置于质量百分比为1~5%的NaOH水溶液中浸泡1.5~3小时,接着把质量比为100:1的竹片和石蜡投入热磨机中,先在预热蒸汽压力为0.3~1.0MPa的条件下,预热时间10~15min,研磨时间3~5min进行纤维分离,然后进行干燥,控制纤维的含水率为6%~8%;
(3)施胶:将胶黏剂均匀喷撒到纤维上,施胶量为纤维重量的6%~12%;
(4)热压:热压温度150~200℃,热压时间以每毫米板厚为2.0-2.5min,热压压力为2.5~5.5MPa;
(5)制品:载边、砂光,得到成品竹木纤维。
7.根据权利要求6所述的一种卫浴专用防水竹木复合板的制造方法,其特征在于,所述胶黏剂包括质量百分比的以下组分:三聚氰胺树脂94.7%、水溶性聚酯树脂3.8%、固化剂1.1-1.5%、余量为稀释剂。
8.根据权利要求7所述的一种卫浴专用防水竹木复合板的制造方法,其特征在于,所述固化剂为尿邻苯二甲酸;
9.根据权利要求7所述的一种卫浴专用防水竹木复合板的制造方法,其特征在于,所述稀释剂为质量百分比为70%的乙醇。
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