CN110951193A - 低密度uv专用板及其制备方法 - Google Patents

低密度uv专用板及其制备方法 Download PDF

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CN110951193A
CN110951193A CN201911323494.6A CN201911323494A CN110951193A CN 110951193 A CN110951193 A CN 110951193A CN 201911323494 A CN201911323494 A CN 201911323494A CN 110951193 A CN110951193 A CN 110951193A
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段培彩
林立东
高炳坤
丁峰
刘娜
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Shandong Huifeng New Material Science And Technology Co Ltd
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Abstract

本发明公开了一种低密度UV专用板及其制备方法，属于新型聚氯乙烯发泡板材技术领域。解决了现有技术存在的后加工过程中会出现麻点、条痕起皱、涂不上漆或漆面发花等问题，其由聚氯乙烯SG‑8型树脂50‑70份，重钙50‑60份，广告板回收料50‑65份，发泡调节剂HL‑90 2‑3份，发泡调节剂HL‑100 1‑2份，HL‑801 1‑2份，钙锌稳定剂3.3‑3.5份，内润滑剂硬脂酸1801 0.1‑0.2份，外润滑剂聚乙烯蜡0.35‑0.4份，高温外润滑N‑14P、塑化剂RL‑925、放热型AC发泡剂、吸热型NS‑603发泡剂、蓝光增白剂、硅藻土组成。本发明可用于生产低密度UV专用板。

Description

低密度UV专用板及其制备方法
技术领域
本发明涉及一种低密度UV专用板及其制备方法，属于新型聚氯乙烯发泡板材技术领域。
背景技术
现有的低密度广告板材具有可钉、可凿、易加工、加工用途广泛等特点，但是现有的低密度广告板材在后期再加工过程中会出现麻点、条痕起皱、涂不上漆或漆面发花等问题，还存在板材表面光滑性不好，美观效果以及室外装饰效果不佳等缺陷，另外板材对各种室内外条件适应性不佳，板材的热收缩率易受外界环境影响，使用寿命短。
发明内容
本发明的目的在于克服现有技术的不足，提供一种低密度UV专用板及其制备方法。
所述的低密度UV专用板，由以下重量份的原料组成：
聚氯乙烯SG-8型树脂50-70份，重钙50-60份，广告板回收料50-65份，发泡调节剂HL-90 2-3份，发泡调节剂HL-100 1-2份，HL-801 1-2份，钙锌稳定剂3.3-3.5份，内润滑剂硬脂酸1801 0.1-0.2份，外润滑剂聚乙烯蜡0.35-0.4份，高温外润滑N-14P 0.3-0.4份，塑化剂RL-925F 0.2-0.3份，放热型AC发泡剂0.7-0.75份，吸热型NS-603发泡剂1.70-1.8份，蓝光增白剂0.25份，硅藻土8-12份。
本发明通过使用PVC加工助剂HL-801配合高润滑体搭配生产工艺，既能节省生产成本又能提高板材的硬度及光亮度。HL-801主要的成分是苯乙烯和丙烯腈，苯乙烯有好的流动性和硬度；丙烯腈对于强度和硬度都有所改善，两者都会促进塑化。加入了HL-801后，流动性会很好，所以可以省略配方中原有的内润滑剂SP-60，内润滑剂SP-60作为一个滑剂和低分子量物质的存在，它会减弱熔体强度和降低硬度，因此省略SP-60有利于提高板子的硬度，熔体强度也会增加。本发明配方中发泡调节剂HL-901、HL-100，HL-801的加入可以促进塑化和提高流动性。HL-100塑化快也能更好的促进塑化，HL-901粘度高，能够有效的提高板子的硬度。三者搭配使用会能更好的促进塑化促进流动性及增加熔体强度，对板子的强度和硬度有了明显的改善提高。
优选的低密度UV专用板，由以下重量份的原料组成：
聚氯乙烯SG-8型树脂60份，重钙55份，广告板回收料60份，发泡调节剂HL-90 2.5份，发泡调节剂HL-100 1.5份，HL-801 1.5份，钙锌稳定剂3.4份，内润滑剂硬脂酸18010.15份，外润滑剂聚乙烯蜡0.38份，高温外润滑N-14P 0.35份，塑化剂RL-925F 0.25份，放热型AC发泡剂0.72份，吸热型NS-603发泡剂1.75份，蓝光增白剂0.25份，硅藻土10份。
本发明加入了硅藻土，硅藻土是具有环保、吸甲醛、透气等特点，硅藻土配合发泡工艺，将调节剂大大降低就可以将硅藻土内置于板材泡孔中，形成表面微孔的结构，目前这一技术已经成为本板材的独家竞争优势。
优选的重钙使用前需要进行活化处理。
所述的低密度UV专用板的制备方法包括以下步骤：
首先将物料按照聚氯乙烯树脂-重钙-稳定剂-发泡剂-润滑剂-发泡调节剂-增白剂-硅藻土-广告板回料的顺序依次投入热混锅内搅拌升温至110-120℃，迅速将混合料放入冷混锅内搅拌降温至40-60℃，将冷却物料输送至挤出机，经料筒七段双螺杆加热使其塑化良好输送至模具，控制模具内温度和压力挤出模唇，经由定型台冷却压合定型，牵引机迁出切割成型得到成品；
其中挤出机机筒温度设定为175-180℃，模具温度设在170℃，模具模唇油温机设定在175-190℃，生产线模唇加冷水机，水温设定30℃，定型台冷却水设在15-25℃。
本发明在原有混料程序上进行改进，所有原材料在热混及冷混后能很好的做到混料均匀，能使润滑体系更好的包覆在PVC表面，首先将物料按照聚氯乙烯树脂-钙粉-稳定剂-发泡剂-润滑剂-发泡调节剂-增白剂-广告板回料的顺序依次投入热混锅内搅拌升温至120℃，迅速将混合料放入冷混锅内搅拌降温至50℃。通过全新的配方和工艺本发明产品的表面平整度以及板面的光滑度均有明显的提高，也同时提高了板材的硬度和强度，板面耐刮性耐磨性也随着板子的强度硬度的提高而有明显的提高，同时也能很好的降低了热变形和成形收缩率。
与现有技术相比本发明的有益效果是：
本发明低密度UV专用板板材不含铅，无毒无苯无甲醛，本发明采用了全新的配方和混料加工工艺，是在传统配方和工艺上实现的重大突破。
本发明低密度UV专用板解决了UV板在后期再加工过程中的麻点、条痕起皱、涂不上漆或漆面发花等问题，经过UV后干燥形成的板材，有亮光表面处理，色泽鲜艳、具有很强的视觉冲击力，耐磨，抗化学性强，使用寿命长，良好的化学稳定性，耐腐蚀性强，硬度大，强度大，防紫外线(耐老化)，耐火阻燃(具有自熄性)，绝缘性能可靠、不变色，易清理，是理想的环保型及广告橱柜的专用材料。本发明既降低了生产加工企业的生产成本，也减少了客户UV加工过程中浪费漆的问题，降低了客户的加工成本，本产品推广后迅速成为市场的首选，也受到了业界及客户的一致好评。
具体实施方式
下面结合具体实施例对本发明做进一步说明。
实施例1
所述的低密度UV专用板，由以下重量份的原料组成：
聚氯乙烯SG-8型树脂50份，重钙50份，广告板回收料50份，发泡调节剂HL-90 2份，发泡调节剂HL-100 1份，HL-801 1份，钙锌稳定剂3.3份，内润滑剂硬脂酸1801 0.1份，外润滑剂聚乙烯蜡0.35份，高温外润滑N-14P 0.3份，塑化剂RL-925F 0.2份，放热型AC发泡剂0.7份，吸热型NS-603发泡剂1.70份，蓝光增白剂0.25份，硅藻土8份。
所述的重钙使用前需要进行活化处理。
所述的低密度UV专用板制备方法包括以下步骤：
首先将物料按照聚氯乙烯树脂-重钙-稳定剂-发泡剂-润滑剂-发泡调节剂-增白剂-硅藻土-广告板回料的顺序依次投入热混锅内搅拌升温至110-120℃，迅速将混合料放入冷混锅内搅拌降温至40-60℃，将冷却物料输送至挤出机，经料筒七段双螺杆加热使其塑化良好输送至模具，控制模具内温度和压力挤出模唇，经由定型台冷却压合定型，牵引机迁出切割成型得到成品；
其中挤出机机筒温度设定为175-180℃，模具温度设在170℃，模具模唇油温机设定在175-190℃，生产线模唇加冷水机，水温设定30℃，定型台冷却水设在15-25℃。
实施例2
所述的低密度UV专用板，由以下重量份的原料组成：
聚氯乙烯SG-8型树脂60份，重钙55份，广告板回收料60份，发泡调节剂HL-90 2.5份，发泡调节剂HL-100 1.5份，HL-801 1.5份，钙锌稳定剂3.4份，内润滑剂硬脂酸18010.15份，外润滑剂聚乙烯蜡0.38份，高温外润滑N-14P 0.35份，塑化剂RL-925F 0.25份，放热型AC发泡剂0.72份，吸热型NS-603发泡剂1.75份，蓝光增白剂0.25份，硅藻土10份。
所述的重钙使用前需要进行活化处理。
所述的低密度UV专用板制备方法包括以下步骤：
首先将物料按照聚氯乙烯树脂-重钙-稳定剂-发泡剂-润滑剂-发泡调节剂-增白剂-硅藻土-广告板回料的顺序依次投入热混锅内搅拌升温至110-120℃，迅速将混合料放入冷混锅内搅拌降温至40-60℃，将冷却物料输送至挤出机，经料筒七段双螺杆加热使其塑化良好输送至模具，控制模具内温度和压力挤出模唇，经由定型台冷却压合定型，牵引机迁出切割成型得到成品；
其中挤出机机筒温度设定为175-180℃，模具温度设在170℃，模具模唇油温机设定在175-190℃，生产线模唇加冷水机，水温设定30℃，定型台冷却水设在15-25℃。
实施例3
所述的低密度UV专用板，由以下重量份的原料组成：
聚氯乙烯SG-8型树脂70份，重钙60份，广告板回收料65份，发泡调节剂HL-90 2-3份，发泡调节剂HL-100 1-2份，HL-801 1-2份，钙锌稳定剂3.3-3.5份，内润滑剂硬脂酸18010.1-0.2份，外润滑剂聚乙烯蜡0.35-0.4份，高温外润滑N-14P 0.3-0.4份，塑化剂RL-925F0.2-0.3份，放热型AC发泡剂0.7-0.75份，吸热型NS-603发泡剂1.70-1.8份，蓝光增白剂0.25份，硅藻土8-12份。
所述的重钙使用前需要进行活化处理。
所述的低密度UV专用板制备方法包括以下步骤：
首先将物料按照聚氯乙烯树脂-重钙-稳定剂-发泡剂-润滑剂-发泡调节剂-增白剂-硅藻土-广告板回料的顺序依次投入热混锅内搅拌升温至110-120℃，迅速将混合料放入冷混锅内搅拌降温至40-60℃，将冷却物料输送至挤出机，经料筒七段双螺杆加热使其塑化良好输送至模具，控制模具内温度和压力挤出模唇，经由定型台冷却压合定型，牵引机迁出切割成型得到成品；
其中挤出机机筒温度设定为175-180℃，模具温度设在170℃，模具模唇油温机设定在175-190℃，生产线模唇加冷水机，水温设定30℃，定型台冷却水设在15-25℃。
实验：
将实施例1-3的产品与传统配方的低密度广告板材进行性能测试，如下：
Figure BDA0002327759470000041
从上表数据可以看出，本发明低密度UV专用板硬度明显提高，表面邵氏硬度达到35D以上，板面光滑，耐磨性好，热收缩率能达到标准(≤10‰)以下，能很好的解决后期加热加工过程后的热收缩问题，本发明产品在各种性能均优于传统的低密度板材产品。

Claims (5)

1.一种低密度UV专用板，其特征在于由以下重量份的原料组成：
聚氯乙烯SG-8型树脂50-70份，重钙50-60份，广告板回收料50-65份，发泡调节剂HL-902-3份，发泡调节剂HL-100 1-2份，HL-801 1-2份，钙锌稳定剂3.3-3.5份，内润滑剂硬脂酸1801 0.1-0.2份，外润滑剂聚乙烯蜡0.35-0.4份，高温外润滑N-14P 0.3-0.4份，塑化剂RL-925F 0.2-0.3份，放热型AC发泡剂0.7-0.75份，吸热型NS-603发泡剂1.70-1.8份，蓝光增白剂0.25份，硅藻土8-12份。
2.根据要求1所述的低密度UV专用板，其特征在于由以下重量份的原料组成：
聚氯乙烯SG-8型树脂60份，重钙55份，广告板回收料60份，发泡调节剂HL-90 2.5份，发泡调节剂HL-100 1.5份，HL-801 1.5份，钙锌稳定剂3.4份，内润滑剂硬脂酸1801 0.15份，外润滑剂聚乙烯蜡0.38份，高温外润滑N-14P 0.35份，塑化剂RL-925F 0.25份，放热型AC发泡剂0.72份，吸热型NS-603发泡剂1.75份，蓝光增白剂0.25份，硅藻土10份。
3.根据要求1或2所述的低密度UV专用板，其特征在于：所述的重钙使用前需要进行活化处理。
4.一种低密度UV专用板的制备方法，其特征在于包括以下步骤：
首先将物料按照聚氯乙烯树脂-重钙-稳定剂-发泡剂-润滑剂-发泡调节剂-增白剂-硅藻土-广告板回料的顺序依次投入热混锅内搅拌升温至110-120℃，迅速将混合料放入冷混锅内搅拌降温至40-60℃，将冷却物料输送至挤出机，经料筒七段双螺杆加热使其塑化良好输送至模具，控制模具内温度和压力挤出模唇，经由定型台冷却压合定型，牵引机迁出切割成型得到成品；
其中挤出机机筒温度设定为175-180℃，模具温度设在170℃，模具模唇油温机设定在175-190℃，生产线模唇加冷水机，水温设定30℃，定型台冷却水设在15-25℃。
5.根据权利要求4所述的低密度UV专用板的制备方法，其特征在于：制备的板材密度为0.33-0.40g/cm3，厚度为6-10mm。
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