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1)  Poly [methylene (polyphenyl iso-cyanate)]
多苯基多次甲基多异氰酸酯
2)  PAPI
多苯基甲烷多异氰酸酯
1.
The lignin-based polyurethane(PU) films were prepared from wheat straw alkali lignin by solution casting with polyethylene glycol(PEG) 300 or 1 000 and polymeric phenyl methane-diisocyanate(PAPI) in the solvent of N,N-dimethylformamide(DMF).
以麦草碱木质素、相对分子质量为300和1 000的聚乙二醇(PEG)及多苯基甲烷多异氰酸酯(PAPI)为原料,以N,N-二甲基甲酰胺为溶剂,使用溶液浇注法固化成型工艺,制备了碱木质素聚氨酯薄膜。
2.
Lignin-based polyurethane(PU)films were prepared from wheat straw alkali lignin by solution casting with polyethylene glycol(PEG)and polymeric phenyl methane-diisocyanate(PAPI)in the solvent of N,N-dimethyl-formamide(DMF).
以麦草碱木质素、聚乙二醇(PEG)及多苯基甲烷多异氰酸酯(PAPI)为原料,以N,N-二甲基甲酰胺为溶剂,使用溶液固化成型法制备了碱木质素聚氨酯薄膜。
3)  PAPI
多亚甲基多苯基多异氰酸酯
1.
Influence of acrylic acid content,initiator content,and PAPI content on emulsion shear strength are studied,and the relation between initiator content,temperature-maintaining time and emulsion conversion are also investigated.
研究了丙烯酸用量、引发剂用量和多亚甲基多苯基多异氰酸酯用量对乳液剪切强度的影响,同时还研究了引发剂用量和保温时间与乳液转化率的关系。
2.
In order to get a kind of adhesive for hemlock (Tsuga Dumosa) splice with excellent properties, based on the N-Hydroxymethyl acrylamide (NMA) modified polyvinyl acetate (PVAC) emulsion, using polyarylpolymethylene -isocyanate (PAPI) as crosslink agent,the properties of adhesive for hemlock splice were discussed in this paper.
为得到一种性能优异的铁杉拼板胶,以多亚甲基多苯基多异氰酸酯(PAPI)为交联剂,对N-羟甲基丙烯酰胺(NMA)改性聚醋酸乙烯酯(PVAc)乳液胶的性能进行测试。
3.
The research results showed that the effect of PAPI content was most prominent on bonding performance at the normal temperature,the stress time was secondly,the effects of starch content and stress were non obvious on bonding performance.
采用正交实验法,研究了以醋酸乙烯酯(VAc)共聚乳液为主剂、多亚甲基多苯基多异氰酸酯(PAPI)为交联剂的双组分木材胶粘剂的胶接工艺与性能。
4)  polyisocyanate(PAPI)
多亚甲基多苯基多异氰酸酯(PAPI)
5)  PAPI
多苯基多亚甲基多异氰酸酯
6)  polymethylene polyphenyl isocyanate
多亚甲基多苯基异氰酸酯
补充资料:多苯基多次甲基多异氰酸酯
分子式:C6H4(NCO)CH2C6H4(NCO)C8H5NO)X
分子量:350-400
CAS号:9016-87-9

性质:褐色透明液体。相对密度为1.200,折光率1.6240。蒸气压(25℃)为2.13×10-5kPa。

制备方法:将苯胺和甲醛按摩尔比1.6-2.0:1配合,再配入盐酸作为缩作催化剂,加入缩合器中,于90-110℃反应30-60min,得到一定比例二苯基甲烷-4,4'-二胺和多次甲基多苯基甲胺,再经光气化、分离、提纯即可得PAPI和MDI。原料消耗定额:甲醛(100%)150kg/t、苯胺750kg/t、光气850kg/t。

用途:用于制聚氨酯材料,广泛应物于建筑行业、汽车工业、电器工业等作保温材料或垫褥等。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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