CN111286091A - 一种高弹性低密度天然乳胶制品的制备方法 - Google Patents

一种高弹性低密度天然乳胶制品的制备方法 Download PDF

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CN111286091A
CN111286091A CN201811503943.0A CN201811503943A CN111286091A CN 111286091 A CN111286091 A CN 111286091A CN 201811503943 A CN201811503943 A CN 201811503943A CN 111286091 A CN111286091 A CN 111286091A
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何拥军
潘正东
刁国旺
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Jiangsu Jsy Latex Product Co ltd
Yangzhou University
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Yangzhou University
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Abstract

一种高弹性低密度天然乳胶制品的制备方法。涉及天然乳胶制品的制备方法，具体涉及一种高弹性低密度天然乳胶制品的制备方法。提供了一种高弹性低密度天然乳胶制品的制备方法。提出的在发泡前加入泡沫稳定剂纳米膨润土，发泡时在形成的泡沫液膜表面形成单层的覆盖，本发明提出的制作方法步骤简单，羧甲基纤维素钠在熟成15‑24h后加入，然后继续熟成30‑90min，发泡前先加入泡沫稳定剂纳米膨润土，再加入氧化锌分散体和二苯胍分散体搅拌均匀后立即发泡，以防止搅拌熟成太久而导致胶液变稠，影响发泡，制备得到结构均匀细腻的高弹性低密度纯天然乳胶制品。

Description

一种高弹性低密度天然乳胶制品的制备方法
技术领域
本发明涉及天然乳胶制品的制备方法，具体涉及一种高弹性低密度天然乳胶制品的制备方法。
背景技术
人生的三分之一是在睡眠中度过的，衡量人们是否拥有“健康睡眠”的四大标志是：睡眠充分，时间足，质量好，效率高；入睡容易；睡眠连续，不会中断；睡眠深适，醒来倦意全消等。由乳胶海绵制作成的乳胶床垫及乳胶枕头具有弹性好，透气性较好的特点，乳胶床垫接触人体面积比普通床垫接触人体面积高出很多，能平均分散人体重量的承受力，具有矫正不良睡姿功能，更有杀菌的功效。但是目前市场价格比较高，生产过程中往往通过降低乳胶制品的密度来降低成本，降低密度的同时必然导致乳胶制品性能的下降。一般情况下，乳胶制品的密度可以降至65kg/m3，其回弹率仅为50%左右，原因是降低乳胶制品密度时，必然会使得乳胶制品的空隙变大，且发泡时气泡变大容易破掉而导致乳胶制品结构不均匀，结构粗糙，严重影响乳胶制品的回弹性及触感。
发明内容
本发明针对以上问题，提供了一种高弹性低密度天然乳胶制品的制备方法。
本发明的技术方案是：包括如下步骤：
1）、将焦磷酸钾、油酸钾、蓖麻油酸钾、硫磺分散体加入到纯天然乳胶液中，25℃条件下搅拌熟成；
2）、将增稠剂羧甲基纤维素钠加入到胶液中继续搅拌熟成，熟成后得混合物A，向混合物A中加入稳泡剂纳米膨润土，然后加入氧化锌分散体及二苯胍分散体，搅拌均匀后立即将混合胶液转移至发泡机中进行发泡，发泡过程中注入氟硅酸钠分散体，发泡后的片材经过红外及热风加热定型后，进入蒸箱进行硫化；
3）、将纯天然乳胶制品半成品进行水洗、烘干即可。
所述步骤1）中按质量份计，天然乳胶为100-105份、焦磷酸钾为2-7份、油酸钾为5-9份、蓖麻油酸钾为4-8份、硫磺分散体1-6份。
所述步骤2）中按质量份计，增稠剂羧甲基纤维素钠为4-6份。
所述步骤2）中按质量份计，纳米膨润土为4-8份、氧化锌分散体为3-6份、二苯胍分散体为0.3-3.5份、氟硅酸钠分散体为3-6份。
所述步骤2）中纳米膨润土的粒径为30-50nm。
所述步骤1）中熟成时间为15-24h；
所述步骤2）中加入增稠剂继续搅拌熟成时间为30-90min，随后加入纳米膨润土，然后再加入氧化锌分散体及二苯胍分散体进行发泡。
所述步骤2）中硫化温度为90-110℃，硫化时间为15-35min。
本发明的有益效果是：本发明提出的在发泡前加入泡沫稳定剂纳米膨润土，发泡时在形成的泡沫液膜表面形成单层的覆盖，有效阻止其排液，提高了泡沫的稳定性，避免了气泡破掉而导致的乳胶制品结构不均匀、粗糙的现象，提高了乳胶制品的弹性。本发明提出的制作方法步骤简单，羧甲基纤维素钠在熟成15-24h后加入，然后继续熟成30-90min，发泡前先加入泡沫稳定剂纳米膨润土，然后再加入氧化锌分散体和二苯胍分散体搅拌均匀后立即发泡，以防止搅拌熟成太久而导致胶液变稠，影响发泡，制备得到结构均匀细腻的高弹性低密度纯天然乳胶制品。
具体实施方式
下面结合实施例对本发明作具体说明。
实施例1
本发明的制备方法包括如下步骤：
1）、将2份的焦磷酸钾、5份的油酸钾、4份的蓖麻油酸钾、1份的硫磺分散体加入到纯100份的天然乳胶液中，25℃条件下搅拌熟成15h，；
2）、将4份的增稠剂羧甲基纤维素钠加入到胶液中继续搅拌熟成30min，熟成后得混合物A，向混合物A中加入4份粒径为30nm的稳泡剂纳米膨润土，然后加入3份氧化锌分散体及0.3份二苯胍分散体，搅拌均匀后立即将混合胶液转移至发泡机中进行发泡，发泡过程中注入3份氟硅酸钠分散体，发泡后的片材经过红外及热风加热定型后，进入蒸箱进行硫化，温度为90℃，硫化时间为15min；
3）、将纯天然乳胶制品半成品进行水洗、烘干即可。
实施例2
本发明的制备方法包括如下步骤：
1）、将7份的焦磷酸钾、9份的油酸钾、8份的蓖麻油酸钾、6份的硫磺分散体加入到纯105份的天然乳胶液中，25℃条件下搅拌熟成24h，；
2）、将6份的增稠剂羧甲基纤维素钠加入到胶液中继续搅拌熟成90min，熟成后得混合物A，向混合物A中加入8份粒径为50nm的稳泡剂纳米膨润土，然后加入6份氧化锌分散体及3.5份二苯胍分散体，搅拌均匀后立即将混合胶液转移至发泡机中进行发泡，发泡过程中注入6份氟硅酸钠分散体，发泡后的片材经过红外及热风加热定型后，进入蒸箱进行硫化，温度为110℃，硫化时间为35min；
3）、将纯天然乳胶制品半成品进行水洗、烘干即可。
实施例3
本发明的制备方法包括如下步骤：
1）、将5份的焦磷酸钾、为7份的油酸钾、6份的蓖麻油酸钾、3份的硫磺分散体加入到纯100份的天然乳胶液中，25℃条件下搅拌熟成20h，；
2）、将5份的增稠剂羧甲基纤维素钠加入到胶液中继续搅拌熟成60min，熟成后得混合物A，向混合物A中加入6份粒径为40nm的稳泡剂纳米膨润土，然后加入5份氧化锌分散体及2份二苯胍分散体，搅拌均匀后立即将混合胶液转移至发泡机中进行发泡，发泡过程中注入4份氟硅酸钠分散体，发泡后的片材经过红外及热风加热定型后，进入蒸箱进行硫化，温度为100℃，硫化时间为25min；
3）、将纯天然乳胶制品半成品进行水洗、烘干即可。
对上述实施例制作的天然乳胶床垫进行性能测试，表1为实施例的检测数据。
表1 各实施例中性能检测数据
项目 现有技术中的乳胶床垫 实施例1 实施例2 实施例3
高度cm 5 5 5 5
密度kg/m<sup>3</sup> 85.56 63.40 62.12 61.25
硬度（40%）N 65.23 101.37 102.18 103.51
拉伸强度kPa 45.45 89.78 90.12 92.20
断裂伸长率% 310.23 306.53 307.73 306.39
压缩永久变形% 19.25 7.14 7.23 7.29
回弹率% 45.78 77.34 78.56 79.28

Claims (8)

1.一种高弹性低密度天然乳胶制品的制备方法，其特征在于，包括如下步骤：
1）、将焦磷酸钾、油酸钾、蓖麻油酸钾、硫磺分散体加入到纯天然乳胶液中，25℃条件下搅拌熟成；
2）、将增稠剂羧甲基纤维素钠加入到胶液中继续搅拌熟成，熟成后得混合物A，向混合物A中加入稳泡剂纳米膨润土，然后加入氧化锌分散体及二苯胍分散体，搅拌均匀后立即将混合胶液转移至发泡机中进行发泡，发泡过程中注入氟硅酸钠分散体，发泡后的片材经过红外及热风加热定型后，进入蒸箱进行硫化；
3）、将纯天然乳胶制品半成品进行水洗、烘干即可。
2.根据权利要求1所述的一种高弹性低密度天然乳胶制品的制备方法，其特征在于，所述步骤1）中按质量份计，天然乳胶为100-105份、焦磷酸钾为2-7份、油酸钾为5-9份、蓖麻油酸钾为4-8份、硫磺分散体1-6份。
3.根据权利要求1所述的一种高弹性低密度天然乳胶制品的制备方法，其特征在于，所述步骤2）中按质量份计，增稠剂羧甲基纤维素钠为4-6份。
4.根据权利要求1所述的一种高弹性低密度天然乳胶制品的制备方法，其特征在于，所述步骤2）中按质量份计，纳米膨润土为4-8份、氧化锌分散体为3-6份、二苯胍分散体为0.3-3.5份、氟硅酸钠分散体为3-6份。
5.根据权利要求1所述的一种高弹性低密度天然乳胶制品的制备方法，其特征在于，所述步骤2）中纳米膨润土的粒径为30-50nm。
6.根据权利要求1所述的一种高弹性低密度天然乳胶制品的制备方法，其特征在于，所述步骤1）中熟成时间为15-24h。
7.根据权利要求1所述的一种高弹性低密度天然乳胶制品的制备方法，其特征在于所述步骤2）中加入增稠剂继续搅拌熟成时间为30-90min，随后加入纳米膨润土，然后再加入氧化锌分散体及二苯胍分散体进行发泡。
8.根据权利要求1所述的一种高弹性低密度天然乳胶制品的制备方法，其特征在于，所述步骤2）中硫化温度为90-110℃，硫化时间为15-35min。
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Cited By (3)

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CN111662490A (zh) * 2020-07-17 2020-09-15 江苏金世缘乳胶制品股份有限公司 一种低气味、低voc的环保型天然胶乳制品的制备方法
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CN114539602A (zh) * 2022-03-14 2022-05-27 青岛创高电池隔膜技术有限公司 一种乳橡胶微孔发泡电池隔板及其制备方法

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