PREPARATION AND CHARACTERISTIC OF POLY(METHYL METHACRYLATE) PIGMENT POWDERY COATING FOR PAPER IN SUPERCRITICAL CARBON DIOXIDE

LIAO Xushen; YANG Rendang; QI Chaorong

doi:10.3724/SP.J.1105.2010.09343

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PREPARATION AND CHARACTERISTIC OF POLY(METHYL METHACRYLATE) PIGMENT POWDERY COATING FOR PAPER IN SUPERCRITICAL CARBON DIOXIDE

Research Article | 更新时间：2021-03-19

- PREPARATION AND CHARACTERISTIC OF POLY(METHYL METHACRYLATE) PIGMENT POWDERY COATING FOR PAPER IN SUPERCRITICAL CARBON DIOXIDE
- Acta Polymerica Sinica Issue 9, Pages: 1088-1093(2010)
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- DOI：10.3724/SP.J.1105.2010.09343
  CLC：
- Published：20 September 2010，
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LIAO Xushen, YANG Rendang, QI Chaorong. PREPARATION AND CHARACTERISTIC OF POLY(METHYL METHACRYLATE) PIGMENT POWDERY COATING FOR PAPER IN SUPERCRITICAL CARBON DIOXIDE. [J]. Acta Polymerica Sinica (9):1088-1093(2010)
DOI：

LIAO Xushen, YANG Rendang, QI Chaorong. PREPARATION AND CHARACTERISTIC OF POLY(METHYL METHACRYLATE) PIGMENT POWDERY COATING FOR PAPER IN SUPERCRITICAL CARBON DIOXIDE. [J]. Acta Polymerica Sinica (9):1088-1093(2010) DOI： 10.3724/SP.J.1105.2010.09343.

摘要

为了减小传统纸张涂布中涂料水分对涂布能耗、涂布质量以及对涂布原纸质量的影响，研究了以超临界二氧化碳为反应介质，制备聚甲基丙烯酸甲酯(PMMA)和碳酸钙颜料混合的粉末涂料粒子.通过FTIR、GPC-十八角度激光光散射联用技术对PMMA组成结构进行了表征，考察了反应体系中引发剂浓度、单体浓度、稳定剂浓度、反应温度和反应时间对聚合反应的转化率和聚合产物的分子量的影响.实验表明，当反应条件为反应压力10 MPa，反应温度75℃，反应时间8 h，单体浓度0.10 g/mL，引发剂浓度0.10×10-2 g/mL，稳定剂浓度0.06×10-2 g/mL时，其聚合反应的转化率较高，同时PMMA的分子量适中，分子量分布窄.SEM观察到混合涂料粒子颗粒均匀，表明颜料在粉末涂料体系中分散性良好.

Abstract

Powdery coating particles mingled polymethyl methacrylate (PMMA) and calcium carbonate inorganic pigment were obtained under water-free conditions in supercritical carbon dioxide (sc-CO2).The formation was confirmed by FTIR and GPC method.The effects of monomer

initiator

stabilizer concentration and the reaction temperature and time on the polymerization conversion rate and molecular weight of the polymer were discussed and the experimental results indicated that the molecular weight and the molecular weight distribution of the PMMA could be controlled within a suitable range when the reaction pressure was 10 MPa

reaction temperature was 75℃

reaction time was 8 h

monomer concentration was 0.10 g/mL

initiator concentration was 0.10×10-2 g/mL and stabilizer concentration was 0.06×10-2 g/mL.From SEM observation

it was found that the pigment granules were able to evenly disperse and embedded in the PMMA matrix and didn’t show conglomeration.

关键词

超临界二氧化碳甲基丙烯酸甲酯粉末涂料

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