Page 49 - 2019-10

车用制品技术与应用 姬春梅·木质素改性多孔酚醛树脂微球的制备研究

Preparation of lignin modified porous phenolic resin microspheres

Ji Chunmei
(Yulin Vocational and Technical College, Yulin 718100, Shaanxi, China)
Abstract: In this paper, phenol and formaldehyde were used as reaction monomers, polyvinyl alcohol
(PVA1788) as dispersant, triethylamine (TEA) as alkali catalyst, hexamethylenetetramine (HMTA) as crosslinking
agent, and spherical phenolic resin was prepared by suspension polycondensation in aqueous phase.
Porous phenolic resin microspheres were prepared by introducing pore-forming agent into stable suspension
polycondensation system, and the preparation of porous phenolic resin microspheres by lignin partial
substitution for phenol was preliminarily discussed. In this paper, the basic synthetic process of phenolic resin
beads prepared by suspension polycondensation in aqueous phase was determined by experiments: Firstly,
phenol, formaldehyde and triethylamine were added to a certain concentration of PVA aqueous solution.
After 40 minutes of reaction at 95~97℃ , HMTA was added and the reaction continued for 4 hours. Then, pH
value was adjusted to 2 with 1 mol/L hydrochloric acid solution and curing reaction lasted for 1 hour. The
beads with regular morphology were obtained. It was found that the concentration of PVA had a great
influence on the particle size of phenolic resin beads, and the particle size distribution was wide. Porous
spherical phenolic resin microspheres were prepared by toluene pore-forming method. The particle size
distribution was narrower than that without pore-forming agent, and the pore size was more than 2 μ. When
the toluene dosage was 5 g and the concentration of PVA was 0.375%, the particle size between 20 mesh and
80 mesh reached 90%. Increasing toluene content can increase the specific surface area of porous spherical
phenolic resin microspheres, but broaden the particle size distribution; and when toluene content is high, the
PVA concentration has a significant effect on the morphology of polycondensation products. It is easy to
agglomerate at low PVA concentration, and fine powder can be obtained at high PVA concentration (particle
size is less than 200 mesh). The hollow phenolic resin microspheres with smooth outer surface and porous inner
surface were prepared by dibutyl phthalate. The particle size distribution was also narrow, and the number
of particles in the range of 20 to 80 meshes accounted for more than 80%. Lignin replaces phenol to prepare
porous spherical phenolic resin. Lignin can participate in the reaction to form spherical resin, but the sphericity
is slightly worse and the pore size is smaller.
Key words: suspension polycondensation; lignin; phenolic resin microsphere; pore-forming agent
(R-03)

泰瑞 ：2018 营收净利双双增长 在过去一年，泰瑞成功实现全电动注塑机的规模
两位数 化和细分化。形成 DE-H/DE-F/DE-C/DB 电动全系
Tederic: double-digit growth in net revenue of 2018 列产品解决方案，值得一提的是泰瑞高速全电系列机
型最高射速可达 500 mm/s。
4 月 12 日，泰瑞机器股份有限公司正式披露公司
此外，针对大型多色汽配产品加工，泰瑞成功研
2018 年度及 2019 年 1 季度业绩报告。在市场温和的
制出二板三色、二板对射、电动独立射台、独立转盘
环境下，泰瑞营收和利润双双再创新高。
结构等诸多亮点产品，以水平转盘对射机为例，它可
2018 年报告期内 ：营业收入 7.92 亿元，较
承载模具重量达 50T，且容纳模具体积更大、产品成
2017 年同比增长 12.68% ；其中国内销售营业增长
型更精准，为多色多物料汽配加工提供充分的适配性
达 26.25% ；净利润 1 亿元，较 2017 年同比增长
和选择性。
20.43% ；毛 利率 28.91%，较 2017 年下 降了 1.56 个
2019 年一季度 ：营业收入 1.81 亿元，较 2018 年
百分点。
同比增长 1.14 % ；净利润 2 525.44 万元，较 2018 年
“ 小机全电化、大机二板化、特殊机型专项化 ”
同比增长 24.18 %。
一直是泰瑞不断发展的理念。2018 年，也正是凭借着
摘编自“聚风塑料”
这些发展和突破，才保证了泰瑞业绩的强势增长。
(R-03)

年
2019 第 45 卷 ·29·