NH4HCO3/TDI用于低密度不饱和聚酯树脂材料的研究开题报告

1. 研究目的与意义（文献综述包含参考文献）

一、 研究背景随着石油等化石资源的紧缺、不饱和聚酯树脂(UPR)的价格不断上升，而对于环境要求不断提高的今天，实现UPR基复合材料轻量化的要求受到重视，低密度不饱和聚酯树脂(（low-density unsaturated polyester resin 涂料、胶粘剂与胶衣树脂[J]. 热固性树脂, 2008, 23(1): 33-38.[2] Kumar N, Mireja S, Khandelwal V, Arun B, Manik G (2017)Light-weight high-strength hollow glass microspheres and bam-boo fiber based hybrid polypropylene composite: a strength analy-sis and morphological study. Compos Part B 109:277285[3] Aruniit A, Kers J, Majak J, Krumme A, Tall K (2012) Influence of hollow glass microspheres on the mechanical and physical proper-ties and cost of particle reinforced polymer composites. Proc Est Acad Sci 61:160165[4] Gu R, Sain M, Konar S (2014) Development and characterization of flexible epoxy foam with reactive liquid rubber and starch. J Mater Sci 49:31253134[5] Nayan NAM, Leemsuthep A, Zakaria Z, Lan DU (2017) Prepa-ration of epoxy composite hollow microspheres (ECHM) using toluenesulfonyl hydrazide (TSH) as blowing agent. Macromol Symp 371:94100[6] Ji GF, Wang XJ, Zhang YF, Kong P, Li C (2017) Triethanola-mineazodiisobutyronitrile mixture as a foaming agent for lowdensity unsaturated polyester resin manufacturing at a low tem-perature. J Appl Polym Sci 134:44797[7] Landrock AH (1995) Handbook of plastic foams: types, prop-erties, manufacture and applications. Noyes Publications, Park Ridge[8] Lorjai P, Wongkasemjit S, Chaisuwan T (2009) Preparation of polybenzoxazine foam and its transformation to carbon foam.Mater Sci Eng A 527:7784[9] Klempner D, Frisch KC (1993) Handbook of polymeric foams and foam technology. Oxford University Press, New York[10] Jahani Y, Valavi A, Ziaee F (2015) Reactive melt modification of polyethylene by ethyl acrylate/acrylic acid copolymers: rheology,morphology and thermal behavior. Iran Polym J 24:110[11] Sims GLA, Sirithongtaworn W (1997) Azodicarbonamide and sodium bicarbonate blends as blowing agents for crosslinked poly-ethylene foam. Cell Polym 16:271283[12] Liu H, Kong D, Sun W, Li QS, Zhou ZY (2016) Effect of anions on the polymerization and adsorption processes of Cu(II) ion-imprinted polymers. Chem Eng J 303:348358[13] Guo LZ, Wang XJ, Zhang YF, Wang XY (2014) Application of azodiisobutyronitrile and azobisisoheptonitrile in low-density unsaturated polyester resin manufacturing. J Appl Polym Sci 131:376418[14] Tan SC, Bai Z, Sun H, Mark JE, Arnold FE (2003) Processing of microcellular foams from polybenzobisthiazole/polyetherketonek-etone molecular composites. J Mater Sci 38:40134019[15] Tsou CY, Wu CL, Tsou CH, Chiua SH, Suen MC, Hung WS(2015) Biodegradable composition of poly(lactic acid) from renewable wood flour. Polym Sci Ser B 57:473480

2. 研究的基本内容、问题解决措施及方案

1、研究目的因此本课题运用碳酸氢铵(nh4hco3)与甲苯二异氰酸酯(tdi)复合发泡制备低密度不饱和聚酯树脂基制品。

nh4hco3作为发泡剂分解产物为水(h2o)、氨气(nh3)以及二氧化碳(co2)，无有害物质残留。

但nh4hco3的分解产物中有h2o的产生，会对树脂的固化起到抑制作用，tdi及其同系物是一类含有双-nco基团的化合物，通过加入tdi，使得-nco基团与h2o、-cooh反应放出co2气体，从而达到二次发泡的效果。