CN105482321A - 一种复合纤维增韧塑料板材及其制备方法 - Google Patents

一种复合纤维增韧塑料板材及其制备方法 Download PDF

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CN105482321A
CN105482321A CN201610064617.9A CN201610064617A CN105482321A CN 105482321 A CN105482321 A CN 105482321A CN 201610064617 A CN201610064617 A CN 201610064617A CN 105482321 A CN105482321 A CN 105482321A
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施利群
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Abstract

本发明公开了一种复合纤维增韧塑料板材,它是由下述重量份的原料组成的:聚乙烯纤维10-14、重铬酸钾0.7-1、96-98%的硫酸50-60、十二烷基三甲基氯化铵1-2、聚二甲基硅氧烷0.8-1、剑麻纤维3-5、蓖麻油酸0.6-1、聚苯并咪唑纤维2-3、邻苯二甲酸酐1-2、环氧硬脂酸辛酯5-6、天青石粉10-12、四丁基溴化铵0.4-1、二烷基二硫代磷酸锌1-2、均苯四酸二酐0.1-0.2、十四烷二元酸1-2、聚氯乙烯100-130、硼酸0.1-0.2、交联剂taic0.3-1。本发明加入了聚乙烯纤维、聚苯并咪唑纤维、剑麻纤维,使得各种纤维均为的分散于塑料成品的各处,有效的提高了成品板材整体的柔韧性。

Description

一种复合纤维增韧塑料板材及其制备方法
技术领域
本发明涉及塑料板材技术领域,尤其涉及一种复合纤维增韧塑料板材及其制备方法。
背景技术
聚氯乙烯(PVC)本色为微黄色半透明状,有光泽。透明度胜于聚乙烯、聚丙烯,差于聚苯乙烯,随助剂用量不同,分为软、硬聚氯乙烯,软制品柔而韧,手感粘,硬制品的硬度高于低密度聚乙烯,而低于聚丙烯,在屈折处会出现白化现象。常见制品:板材、管材、鞋底、玩具、门窗、电线外皮、文具等。是一种使用一个氯原子取代聚乙烯中的一个氢原子的高分子材料,PVC有较高的硬度和力学性能。并随分子量的增大而提高,但随温度的升高而下降。硬质PVC的力学性能好,其弹性模量可达1500-3000MPa。而软质的PVC的弹性1.5-15MPa,但断裂伸长率高达200%-450%,可以应用于化工,电镀,电解槽的衬里,绝缘垫层,火车、汽车内饰及辅助材料等,然而PVC的耐热稳定性十分差,140℃即开始分解,熔融温度为160℃,PVC的线膨胀系数较小,具有难燃性,氧化指数高达45以上,目前市售的PVC板材还普遍存在抗菌性不好,耐湿热性差等缺点,严重的影响了板材的使用寿命。
发明内容
本发明目的就是为了弥补已有技术的缺陷,提供一种复合纤维增韧塑料板材及其制备方法。
本发明是通过以下技术方案实现的:
一种复合纤维增韧塑料板材,它是由下述重量份的原料组成的:
聚乙烯纤维10-14、重铬酸钾0.7-1、96-98%的硫酸50-60、十二烷基三甲基氯化铵1-2、聚二甲基硅氧烷0.8-1、剑麻纤维3-5、蓖麻油酸0.6-1、聚苯并咪唑纤维2-3、邻苯二甲酸酐1-2、环氧硬脂酸辛酯5-6、天青石粉10-12、四丁基溴化铵0.4-1、二烷基二硫代磷酸锌1-2、均苯四酸二酐0.1-0.2、十四烷二元酸1-2、聚氯乙烯100-130、硼酸0.1-0.2、交联剂taic0.3-1。
一种所述的复合纤维增韧塑料板材的制备方法,包括以下步骤:
(1)将上述剑麻纤维送入浓度为10-12%的碳酸钠水溶液中浸泡1-2小时,过滤出料,在常温下干燥完全,与硼酸混合,送入80-90℃的烘箱中,保温3-4分钟,出料冷却,得预处理剑麻纤维;
(2)将上述聚苯并咪唑纤维加入到其重量3-4倍的无水乙醇中,搅拌均匀,加入均苯四酸二酐、邻苯二甲酸酐,升高温度为60-65℃,保温搅拌10-20分钟,得聚苯并咪唑纤维醇液;
(3)将上述十四烷二元酸加入到其重量2-3倍的无水乙醇中,搅拌均匀,与上述聚苯并咪唑纤维醇液混合,100-200转/分搅拌4-6分钟,升高温度为70-80℃,加入交联剂taic,保温反应1-2小时,得交联改性纤维溶液;
(4)将上述预处理剑麻纤维加入到交联改性纤维溶液中,搅拌混合30-40分钟,抽滤,将滤饼在60-70℃下真空干燥20-30分钟,得改性纤维;
(5)将上述改性纤维、聚乙烯纤维、重铬酸钾混合,加入到上述96-98%的硫酸中,在30-35℃下超声分散4-6分钟,超声功率为频率为90-100kHz,抽滤,将滤饼水洗3-4次,常温干燥,得复合氧化纤维;
(6)将上述十二烷基三甲基氯化铵加入到其重量20-31倍的去离子水中,搅拌均匀,加入上述复合氧化纤维、聚二甲基硅氧烷,300-400转/分搅拌20-30分钟,加入天青石粉,在80-90℃下加热至水干,得改性填料;
(7)将上述改性填料与聚氯乙烯混合,在116-120℃下预热搅拌10-20分钟,加入剩余各原料,经双螺杆挤出机挤出,经模具成型、截切、覆膜,即得所述复合纤维增韧塑料板材。
本发明的优点是:
本发明加入了聚乙烯纤维、聚苯并咪唑纤维、剑麻纤维,分别采用不同的方式进行处理,最后与重铬酸钾、硫酸改性纤维进行氧化处理,除去了纤维表面弱的界面层,增加了纤维表面的粗糙度,增大了纤维的表面积,从而增强了纤维与塑料基体之间的机械啮合力,增加纤维与塑料基体之间的界面粘结性,使得各种纤维均为的分散于塑料成品的各处,有效的提高了成品板材整体的柔韧性。
具体实施方式
一种复合纤维增韧塑料板材,它是由下述重量份的原料组成的:
聚乙烯纤维10、重铬酸钾0.7、96%的硫酸50、十二烷基三甲基氯化铵1、聚二甲基硅氧烷0.8、剑麻纤维3、蓖麻油酸0.6、聚苯并咪唑纤维2、邻苯二甲酸酐1、环氧硬脂酸辛酯5、天青石粉10、四丁基溴化铵0.4、二烷基二硫代磷酸锌1、均苯四酸二酐0.1、十四烷二元酸1、聚氯乙烯100、硼酸0.1、交联剂taic0.3。
一种所述的复合纤维增韧塑料板材的制备方法,包括以下步骤:
(1)将上述剑麻纤维送入浓度为10%的碳酸钠水溶液中浸泡1小时,过滤出料,在常温下干燥完全,与硼酸混合,送入80℃的烘箱中,保温3分钟,出料冷却,得预处理剑麻纤维;
(2)将上述聚苯并咪唑纤维加入到其重量3倍的无水乙醇中,搅拌均匀,加入均苯四酸二酐、邻苯二甲酸酐,升高温度为60℃,保温搅拌10分钟,得聚苯并咪唑纤维醇液;
(3)将上述十四烷二元酸加入到其重量2倍的无水乙醇中,搅拌均匀,与上述聚苯并咪唑纤维醇液混合,100转/分搅拌4分钟,升高温度为70℃,加入交联剂taic,保温反应1小时,得交联改性纤维溶液;
(4)将上述预处理剑麻纤维加入到交联改性纤维溶液中,搅拌混合30分钟,抽滤,将滤饼在60℃下真空干燥20分钟,得改性纤维;
(5)将上述改性纤维、聚乙烯纤维、重铬酸钾混合,加入到上述96%的硫酸中,在30℃下超声分散4分钟,超声功率为频率为90kHz,抽滤,将滤饼水洗3次,常温干燥,得复合氧化纤维;
(6)将上述十二烷基三甲基氯化铵加入到其重量20倍的去离子水中,搅拌均匀,加入上述复合氧化纤维、聚二甲基硅氧烷,300转/分搅拌20分钟,加入天青石粉,在80℃下加热至水干,得改性填料;
(7)将上述改性填料与聚氯乙烯混合,在116℃下预热搅拌10分钟,加入剩余各原料,经双螺杆挤出机挤出,经模具成型、截切、覆膜,即得所述复合纤维增韧塑料板材。
性能测试:
拉伸强度:45.1MPa;
弯曲强度:74MPa;
阻燃性:离火即熄,没有黑烟。

Claims (2)

1.一种复合纤维增韧塑料板材,其特征在于,它是由下述重量份的原料组成的:
聚乙烯纤维10-14、重铬酸钾0.7-1、96-98%的硫酸50-60、十二烷基三甲基氯化铵1-2、聚二甲基硅氧烷0.8-1、剑麻纤维3-5、蓖麻油酸0.6-1、聚苯并咪唑纤维2-3、邻苯二甲酸酐1-2、环氧硬脂酸辛酯5-6、天青石粉10-12、四丁基溴化铵0.4-1、二烷基二硫代磷酸锌1-2、均苯四酸二酐0.1-0.2、十四烷二元酸1-2、聚氯乙烯100-130、硼酸0.1-0.2、交联剂taic0.3-1。
2.一种如权利要求1所述的复合纤维增韧塑料板材的制备方法,其特征在于,包括以下步骤:
(1)将上述剑麻纤维送入浓度为10-12%的碳酸钠水溶液中浸泡1-2小时,过滤出料,在常温下干燥完全,与硼酸混合,送入80-90℃的烘箱中,保温3-4分钟,出料冷却,得预处理剑麻纤维;
(2)将上述聚苯并咪唑纤维加入到其重量3-4倍的无水乙醇中,搅拌均匀,加入均苯四酸二酐、邻苯二甲酸酐,升高温度为60-65℃,保温搅拌10-20分钟,得聚苯并咪唑纤维醇液;
(3)将上述十四烷二元酸加入到其重量2-3倍的无水乙醇中,搅拌均匀,与上述聚苯并咪唑纤维醇液混合,100-200转/分搅拌4-6分钟,升高温度为70-80℃,加入交联剂taic,保温反应1-2小时,得交联改性纤维溶液;
(4)将上述预处理剑麻纤维加入到交联改性纤维溶液中,搅拌混合30-40分钟,抽滤,将滤饼在60-70℃下真空干燥20-30分钟,得改性纤维;
(5)将上述改性纤维、聚乙烯纤维、重铬酸钾混合,加入到上述96-98%的硫酸中,在30-35℃下超声分散4-6分钟,超声功率为频率为90-100kHz,抽滤,将滤饼水洗3-4次,常温干燥,得复合氧化纤维;
(6)将上述十二烷基三甲基氯化铵加入到其重量20-31倍的去离子水中,搅拌均匀,加入上述复合氧化纤维、聚二甲基硅氧烷,300-400转/分搅拌20-30分钟,加入天青石粉,在80-90℃下加热至水干,得改性填料;
(7)将上述改性填料与聚氯乙烯混合,在116-120℃下预热搅拌10-20分钟,加入剩余各原料,经双螺杆挤出机挤出,经模具成型、截切、覆膜,即得所述复合纤维增韧塑料板材。
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