CN103613823B - 一种防腐木塑复合型材 - Google Patents
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Abstract
本发明公开了一种防腐木塑复合型材，它是由下述重量份的原料组成的：聚乙烯树脂粒子30-40、木质纤维50-60、聚乙二醇400？2-3、2,6-二甲基苯硼酸1-2、马来酸酐接枝聚丙烯3-4、氢氧化铝1-2、聚酰胺蜡微粉2-3、改性增塑剂3-4；本发明的木塑复合型材具有很好的力学性能、持续的耐菌蚀和防腐性能，应用广泛，使用寿命长。
Description
技术领域
本发明主要涉及一种复合型材，尤其涉及一种防腐木塑复合型材。
背景技术
木塑复合材料内含塑料和纤维，因此，具有同木材相类似的加工性能，可锯、可钉、可刨，使用木工器具即可完成，且握钉力明显优于其他合成材料。机械性能优于木质材料。握钉力一般是木材的3倍，是刨花板的5倍。
木塑复合材料内含塑料，因而具有较好的弹性模量。此外，由于内含纤维并经与塑料充分混合，因而具有与硬木相当的抗压、抗弯曲等物理机械性能，并且其耐用性明显优于普通木质材料。表面硬度高，一般是木材的2——5倍。
木塑材料及其产品与木材相比，可抗强酸碱、耐水、耐腐蚀，并且不繁殖细菌，不易被虫蛀、不长真菌。使用寿命长，可达50年以上。
通过助剂，塑料可以发生聚合、发泡、固化、改性等改变，从而改变木塑材料的密度、强度等特性，还可以达到抗老化、防静电、阻燃等特殊要求。
具有紫外线光稳定性、着色性良好。其最大优点就是变废为宝，并可100%回收再生产。
可以分解，不会造成“白色污染”，是真正的绿色环保产品。
原料来源广泛，生产木塑复合材料的塑料原料主要是高密度聚乙烯或聚丙烯，木质纤维可以是木粉、谷糠或木纤维，另外还需要少量添加剂和其他加工助剂。还可以根据需要，制成任意形状和尺寸大小。
发明内容
本发明目的就是提供一种防腐木塑复合型材。
本发明是通过以下技术方案实现的：
一种防腐木塑复合型材，它是由下述重量份的原料组成的：
聚乙烯树脂粒子30-40、木质纤维50-60、聚乙二醇4002-3、2,6-二甲基苯硼酸1-2、马来酸酐接枝聚丙烯3-4、氢氧化铝1-2、聚酰胺蜡微粉2-3、改性增塑剂3-4；
所述的改性增塑剂是由下述重量份的原料组成的：
地沟油30-40、邻苯二甲酸酯20-30、蓖麻油5-6、霍霍巴油2-3、γ-氨丙基三乙氧基硅烷1-2、纳米氮化铝粉0.2-0.3、萜烯树脂1-2、过氧化二叔丁基0.1-0.2、异辛酸0.1-0.2；
将上述萜烯树脂加热到80-100℃，保温10-15分钟，降低温度为50-60℃，加入γ-氨丙基三乙氧基硅烷，搅拌分散3-5分钟，依次加入邻苯二甲酸酯、地沟油、蓖麻油、霍霍巴油，添加完毕后，升高温度为90-100℃，充分搅拌，加入纳米氮化铝粉、异辛酸，继续升高温度为105-110℃，滴加过氧化二叔丁基，搅拌反应1-2小时，冷却至常温，即得所述改性增塑剂。
一种防腐木塑复合型材的制备方法，包括以下步骤：
将上述木质纤维和2,6-二甲基苯硼酸在50-70℃下预混，混合均匀后加入聚乙二醇400、聚酰胺蜡微粉，在90-100℃下搅拌分散2-3分钟，冷却至常温，加入剩余各原料，通过双螺杆挤出机熔融共混挤出，成型，即得所述防腐木塑复合型材。
本发明的优点是：
本发明的木塑复合型材具有很好的力学性能、持续的耐菌蚀和防腐性能，应用广泛，使用寿命长。
具体实施方式
实施例1
一种防腐木塑复合型材，它是由下述重量份（公斤）的原料组成的：
聚乙烯树脂粒子40、木质纤维60、聚乙二醇4002、2,6-二甲基苯硼酸2、马来酸酐接枝聚丙烯3、氢氧化铝1、聚酰胺蜡微粉3、改性增塑剂4；
所述的改性增塑剂是由下述重量份的原料组成的：
地沟油40、邻苯二甲酸酯30、蓖麻油6、霍霍巴油3、γ-氨丙基三乙氧基硅烷1、纳米氮化铝粉0.3、萜烯树脂2、过氧化二叔丁基0.2、异辛酸0.2；
将上述萜烯树脂加热到100℃，保温15分钟，降低温度为60℃，加入γ-氨丙基三乙氧基硅烷，搅拌分散3分钟，依次加入邻苯二甲酸酯、地沟油、蓖麻油、霍霍巴油，添加完毕后，升高温度为100℃，充分搅拌，加入纳米氮化铝粉、异辛酸，继续升高温度为110℃，滴加过氧化二叔丁基，搅拌反应1小时，冷却至常温，即得所述改性增塑剂。
一种防腐木塑复合型材的制备方法，包括以下步骤：
将上述木质纤维和2,6-二甲基苯硼酸在70℃下预混，混合均匀后加入聚乙二醇400、聚酰胺蜡微粉，在100℃下搅拌分散3分钟，冷却至常温，加入剩余各原料，通过双螺杆挤出机熔融共混挤出，成型，即得所述防腐木塑复合型材。
性能测试：
抗弯强度（MPa）：24.2；
6个月户外环境测试（湿度65-70%RH，温度25-30℃），表面无明显色泽和形貌变化，没有霉菌斑。
Claims (2)
1.一种防腐木塑复合型材，其特征在于它是由下述重量份的原料制成的：
聚乙烯树脂粒子30-40、木质纤维50-60、聚乙二醇4002-3、2,6-二甲基苯硼酸1-2、马来酸酐接枝聚丙烯3-4、氢氧化铝1-2、聚酰胺蜡微粉2-3、改性增塑剂3-4；
所述的改性增塑剂是由下述重量份的原料制成的：
地沟油30-40、邻苯二甲酸酯20-30、蓖麻油5-6、霍霍巴油2-3、γ-氨丙基三乙氧基硅烷1-2、纳米氮化铝粉0.2-0.3、萜烯树脂1-2、过氧化二叔丁基0.1-0.2、异辛酸0.1-0.2；
将上述萜烯树脂加热到80-100℃，保温10-15分钟，降低温度为50-60℃，加入γ-氨丙基三乙氧基硅烷，搅拌分散3-5分钟，依次加入邻苯二甲酸酯、地沟油、蓖麻油、霍霍巴油，添加完毕后，升高温度为90-100℃，充分搅拌，加入纳米氮化铝粉、异辛酸，继续升高温度为105-110℃，滴加过氧化二叔丁基，搅拌反应1-2小时，冷却至常温，即得所述改性增塑剂。
2.一种如权利要求1所述的防腐木塑复合型材的制备方法，其特征在于包括以下步骤：
将上述木质纤维和2,6-二甲基苯硼酸在50-70℃下预混，混合均匀后加入聚乙二醇400、聚酰胺蜡微粉，在90-100℃下搅拌分散2-3分钟，冷却至常温，加入剩余各原料，通过双螺杆挤出机熔融共混挤出，成型，即得所述防腐木塑复合型材。
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