CN107841899B - 一种儿童轻质玩具纸模及其制备方法 - Google Patents
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Abstract
本发明涉及功能纸成型技术领域,具体涉及一种儿童轻质玩具纸模及其制备方法。通过较少的二异氰酸酯单体与多元醇迅速发泡产生的膨胀分散,将粘接性改性的植物纤维分散为泡沫状,并粘接为纸模。通过铝粉和碱液进一步激活植物纤维的表面粘接性,使得植物纤维在达到泡沫时发生纤维间的粘接连接,从而得到轻质、高强的纸模。克服了一直以来发泡纸在浆体条件下发泡的缺陷,为玩具纸模的规模化生产和应用提供了技术支撑。
Description
技术领域
本发明涉及功能纸成型技术领域,具体涉及一种儿童轻质玩具纸模及其制备方法。
背景技术
目前,儿童的手工玩具的制作通常采用纸件或卡片为主要原材料,叠合成厚纸或厚卡片后,按照图纸要求进行剪裁、组装和黏贴成为模具,即得手工玩具。特别是3D纸模制作,将画在纸上的平面展开图剪下,按照说明进行组装,粘贴,最后形成一件完整的艺术品的活动,模型达人还可以自己制作图纸进行制作,3D纸模制作是一项极富趣味性和挑战性的娱乐项目,主要对象是青少年,制作3D纸模不仅可以锻炼青少年的动手能力,更可以培养他们坚持不懈和创新的精神品质。
由于该手工玩具能体现有趣的手工创造过程,且获得的模具逼真,能反映图纸上的原作比例,色彩关系和气氛,因而深受各个国家儿童的喜爱,特别是在东欧和日本等国家较为流行。现有技术中,由于市场上手工玩具的制作通常是以厚纸或厚卡片为原材料制成,不仅生产成本较高,而且制备的模型厚重,裁剪折成的纸模强度很低,易损坏。因此,有必要开发一种新的适用于制造纸模的材料,以克服上述现实存在的技术问题。
发明内容
针对目前玩具纸模生产成本高、模型重,强度低的缺陷,本发明提出一种儿童轻质玩具纸模,具有生产成本低、轻质低密化、强度高等优势。
为解决上述问题,本发明采用以下技术方案:
一种儿童轻质玩具纸模的制备方法,包括如下步骤:
(1)将木薯淀粉,脂肪酸甘油酯和过碳酰胺按配方量进行混合,在42-48℃的条件下搅拌交联接枝反应30-60分钟,即得粘结剂;所述粘结剂由如下重量份数的原料组成:木薯淀粉30-45份,脂肪酸甘油酯15-30份,过碳酰胺20-40份;
(2)将植物纤维处理成长度小于3mm的纤维单元;与步骤(1)预制的粘接剂以质量比100:3-5进行气流分散,使植物纤维松懈并与粘接剂充分分散,得到改性植物纤维;
(3)将步骤(2)得到的改性纤维与多元醇、铝粉以质量比100:5-8:2-3混合组成组分A;选用二异氰酸酯单体为组分B;碱液作为组分C;
(4)通过混合设备使组分A和组分B、组分C以质量比100:5-10:1-3对冲喷入模具,熟化5-10s;
(5)热压、干燥、脱模,去除飞边,得到儿童轻质玩具纸模。
优选的,步骤(2)所述将植物纤维处理成长度小于3mm的纤维单元,是指通过粉碎或高压爆裂将植物纤维处理为解束的植物纤维,进一步优选的,在植物纤维中添加入常规的无机添加剂如滑石粉、碳酸钙、硅灰石中的一种,从而获得硬度更佳的纸模。
优选的,步骤(3)所述碱液为质量浓度为15%的氢氧化钠溶液。
优选的,步骤(3)所述多元醇为乙二醇、丙二醇、1,3 丁二醇、1,4 丁二醇、1,6 己二醇、新戊二醇、二乙二醇、二丙二醇、季戊四醇、甘油、双甘油中的一种。
一种儿童轻质玩具纸模,其特征是由上述所述方法制备得到。通过较少的二异氰酸酯单体与多元醇迅速发泡产生的膨胀分散,将粘接性改性的植物纤维分散为泡沫状,并粘接为纸模。通过铝粉和碱液进一步激活植物纤维的表面粘接性,使得植物纤维在达到泡沫时发生纤维间的粘接连接,从而得到轻质、高强的纸模。
公知的,纸浆直接发泡,由于难以形成泡孔支撑,因此发泡率极低。本发明通过二异氰酸酯单体与多元醇迅速发泡产生的膨胀分散,将非纸浆状的植物纤维发泡并粘接,克服了一直以来发泡纸在浆体条件下发泡的缺陷,为玩具纸模的规模化生产和应用提供了技术支撑。
本发明一种儿童轻质玩具纸模及其制备方法,与现有技术相比,其突出的特点和优异的效果表现在:
1、本发明通过二异氰酸酯单体与多元醇迅速发泡产生的膨胀分散,将非纸浆状的植物纤维发泡并粘接,实现了非纸浆发泡纸模,为纸模的生产提供了可靠地技术支撑。
2、本发明通过预先改性植物纤维,是植物纤维易于被激活粘接性,从而使得植物纤维能能够在膨胀、发泡分散后快速粘接连接形成支撑体。
3、本发明采用反应对冲生产产品,经计量后的原料在高压碰撞下混合并注射充模进行发泡,能方便、快速的得到高强度的儿童玩具纸模。
具体实施方式
以下通过具体实施方式对本发明作进一步的详细说明,但不应将此理解为本发明的范围仅限于以下的实例。在不脱离本发明上述方法思想的情况下,根据本领域普通技术知识和惯用手段做出的各种替换或变更,均应包含在本发明的范围内。
实施例1
一种儿童轻质玩具纸模的制备方法,包括如下步骤:
(1)将木薯淀粉,脂肪酸甘油酯和过碳酰胺按配方量进行混合,在42-48℃的条件下搅拌交联接枝反应30分钟,即得粘结剂;所述粘结剂由如下重量份数的原料组成:木薯淀粉30份,脂肪酸甘油酯15份,过碳酰胺20份;
(2)将植物纤维粉碎松懈成长度小于3mm的纤维单元;与步骤(1)预制的粘接剂以质量比100:3进行气流分散,使植物纤维松懈并与粘接剂充分分散,得到改性植物纤维;
(3)将步骤(2)得到的改性纤维与1,3 丁二醇、铝粉以质量比100:5:2混合组成组分A;选用二异氰酸酯单体为组分B;质量浓度为15%的氢氧化钠溶液为碱液作为组分C;
(4)通过混合设备使组分A和组分B、组分C以质量比100:5-10:1-3对冲喷入模具,熟化5s;
(5)热压、干燥、脱模,去除飞边,得到儿童轻质玩具纸模。
实施例2
一种儿童轻质玩具纸模的制备方法,包括如下步骤:
(1)将木薯淀粉,脂肪酸甘油酯和过碳酰胺按配方量进行混合,在42-48℃的条件下搅拌交联接枝反应60分钟,即得粘结剂;所述粘结剂由如下重量份数的原料组成:木薯淀粉45份,脂肪酸甘油酯30份,过碳酰胺40份;
(2)将植物纤维处理成长度小于3mm的纤维单元;与步骤(1)预制的粘接剂以质量比100:5进行气流分散,使植物纤维松懈并与粘接剂充分分散,得到改性植物纤维;
(3)将步骤(2)得到的改性纤维与1,4 丁二醇、铝粉以质量比100:8:3混合组成组分A;选用二异氰酸酯单体为组分B;质量浓度为15%的氢氧化钠溶液为碱液作为组分C;
(4)通过混合设备使组分A和组分B、组分C以质量比100:10:1对冲喷入模具,熟化10s;
(5)热压、干燥、脱模,去除飞边,得到儿童轻质玩具纸模。
实施例3
一种儿童轻质玩具纸模的制备方法,包括如下步骤:
(1)将木薯淀粉,脂肪酸甘油酯和过碳酰胺按配方量进行混合,在42-48℃的条件下搅拌交联接枝反应45分钟,即得粘结剂;所述粘结剂由如下重量份数的原料组成:木薯淀粉35份,脂肪酸甘油酯30份,过碳酰胺25份;
(2)将植物纤维与硅灰石纤维以质量比100:8混合,通过粉碎将植物纤维处理成长度小于3mm的纤维单元;与步骤(1)预制的粘接剂以质量比100:5进行气流分散,使植物纤维松懈并与粘接剂充分分散,得到改性植物纤维;
(3)将步骤(2)得到的改性纤维与1,6 己二醇、铝粉以质量比100:8:3混合组成组分A;选用二异氰酸酯单体为组分B;质量浓度为15%的氢氧化钠溶液为碱液作为组分C;
(4)通过混合设备使组分A和组分B、组分C以质量比100:5:1对冲喷入模具,熟化8s;
(5)热压、干燥、脱模,去除飞边,得到儿童轻质玩具纸模。
实施例4
一种儿童轻质玩具纸模的制备方法,包括如下步骤:
(1)将木薯淀粉,脂肪酸甘油酯和过碳酰胺按配方量进行混合,在42-48℃的条件下搅拌交联接枝反应30-60分钟,即得粘结剂;所述粘结剂由如下重量份数的原料组成:木薯淀粉45份,脂肪酸甘油酯15份,过碳酰胺35份;
(2)将植物纤维处理成长度小于3mm的纤维单元;与步骤(1)预制的粘接剂以质量比100:5进行气流分散,使植物纤维松懈并与粘接剂充分分散,得到改性植物纤维;
(3)将步骤(2)得到的改性纤维与新戊二醇、铝粉以质量比100:6:2混合组成组分A;选用二异氰酸酯单体为组分B;质量浓度为15%的氢氧化钠溶液的碱液作为组分C;
(4)通过混合设备使组分A和组分B、组分C以质量比100:8:2对冲喷入模具,熟化10s;
(5)100℃热压、干燥、脱模,去除飞边,得到儿童轻质玩具纸模。
对比例1
一种儿童轻质玩具纸模的制备方法,包括如下步骤:
(1)将植物纤维与新戊二醇、铝粉以质量比100:6:2混合组成组分A;选用二异氰酸酯单体为组分B;质量浓度为15%的氢氧化钠溶液的碱液作为组分C;
(4)通过混合设备使组分A和组分B、组分C以质量比100:8:2对冲喷入模具,熟化10s;
(5)100℃热压、干燥、脱模,去除飞边,得到儿童轻质玩具纸模。
对比例2
一种儿童轻质玩具纸模的制备方法,包括如下步骤:
(1)将木薯淀粉,脂肪酸甘油酯和过碳酰胺按配方量进行混合,在42-48℃的条件下搅拌交联接枝反应30-60分钟,即得粘结剂;所述粘结剂由如下重量份数的原料组成:木薯淀粉45份,脂肪酸甘油酯15份,过碳酰胺35份;
(2)将植物纤维处理成长度小于3mm的纤维单元;与步骤(1)预制的粘接剂以质量比100:5进行气流分散,使植物纤维松懈并与粘接剂充分分散,得到改性植物纤维;
(3)将步骤(2)得到的改性纤维与铝粉以质量比100:2混合组成组分A;与质量浓度为15%的氢氧化钠溶液的碱液以质量比100:2对冲喷入模具,熟化10s;
(5)100℃热压、干燥、脱模,去除飞边,得到儿童轻质玩具纸模。
对比例3
厚度为1cm的瓦楞纸板。
将实施例1-4、对比例1-2制得的纸模裁切为厚度为1cm的纸模、对比例3为市售瓦楞纸板,长宽均为0.5m进行纸板承压分析,如表1所示。
表1:
Claims (5)
1.一种儿童轻质玩具纸模的制备方法,包括如下步骤:
(1)将木薯淀粉,脂肪酸甘油酯和过碳酰胺按配方量进行混合,在42-48℃的条件下搅拌交联接枝反应30-60分钟,即得粘结剂;所述粘结剂由如下重量份数的原料组成:木薯淀粉30-45份,脂肪酸甘油酯15-30份,过碳酰胺20-40份;
(2)将植物纤维处理成长度小于3mm的纤维单元;与步骤(1)预制的粘接剂以质量比100:3-5进行气流分散,使植物纤维松懈并与粘接剂充分分散,得到改性植物纤维;所述将植物纤维处理成长度小于3mm的纤维单元,在植物纤维中添加入滑石粉、碳酸钙、硅灰石中的一种,从而获得硬度更佳的纸模;
(3)将步骤(2)得到的改性纤维与多元醇、铝粉以质量比100:5-8:2-3混合组成组分A;选用二异氰酸酯单体为组分B;碱液作为组分C;
(4)通过混合设备使组分A和组分B、组分C以质量比100:5-10:1-3对冲喷入模具,熟化5-10s;
(5)热压、干燥、脱模,去除飞边,得到儿童轻质玩具纸模。
2.根据权利要求1所述一种儿童轻质玩具纸模的制备方法,其特征在于:步骤(2)所述将植物纤维处理成长度小于3mm的纤维单元,是指通过粉碎或高压爆裂将植物纤维处理为解束的植物纤维。
3.根据权利要求1所述一种儿童轻质玩具纸模的制备方法,其特征在于:步骤(3)所述碱液为质量浓度为15%的氢氧化钠溶液。
4.根据权利要求1所述一种儿童轻质玩具纸模的制备方法,其特征在于:步骤(3)所述多元醇为乙二醇、丙二醇、1,3 丁二醇、1,4 丁二醇、1,6 己二醇、新戊二醇、二乙二醇、二丙二醇、季戊四醇、甘油、双甘油中的一种。
5.一种儿童轻质玩具纸模,其特征是由权利要求1-4任一项所述的方法制备得到。
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