固相接枝論文：固相接枝共聚改性聚丙烯雙單體

1、固相接枝論文：固相接枝共聚改性聚丙烯雙單體【中文摘要】本研究用固相接枝法對(duì)PP進(jìn)行雙單體接枝改性。通過(guò)接枝丙烯酸乙酯（EA）和馬來(lái)酸酐（MAH考察接枝反應(yīng)溫度、時(shí)間、引發(fā)劑用量、聚丙烯粒徑、單體配比、單體用量對(duì)接枝率的影響進(jìn)行研究,通過(guò)測(cè)定不同條件下產(chǎn)物的接枝率，對(duì)接枝工藝條件進(jìn)行了優(yōu)化。本研究對(duì)單一單體接枝、雙單體接枝進(jìn)行了研究，并通過(guò)潤(rùn)濕角、熔體流動(dòng)速率（MFR和力學(xué)性能測(cè)試、以及傅里葉變換紅外光譜（FTIR）和差示掃描量熱儀（DSC）等分析手段，對(duì)接枝產(chǎn)物進(jìn)行了表征。結(jié)果表明：?jiǎn)我粏误w接枝的最佳反應(yīng)條件為：PPIO.OOg,單體0.70g,引發(fā)劑0.03g,界面劑二甲苯1mL,分散劑乙醚

2、1mL,在85C（引發(fā)劑1）和100C（引發(fā)劑2）下反應(yīng)2h。雙單體接枝的最佳反應(yīng)條件為：PP1O.OOg,單體0.60g,引發(fā)劑0.03g,復(fù)配雙單體質(zhì)量比WEA:WMAH=7:界面劑二甲苯1mL，分散劑乙醚1mL在85C（引發(fā)劑1）下反應(yīng)2h。表征測(cè)試結(jié)果表明:雙單體被成功地接枝到PP上；接枝產(chǎn)物的熱性能得到明顯改善;接枝產(chǎn)物的水潤(rùn)濕角比原料降低，極性提高；接枝產(chǎn)物的MFR和力學(xué)性能與純PP性能接近?！居⑽恼縏hebinarymonomergraftingtechnologybysolid-graftingmethodofPPwasresearchedinthisresearch.By

3、studyingreactiontemperature,time,initiator,polypropyleneparticlesize,monomerratioandtheamountofgraftingmonomertomeasuregraftingrateofproductunderthedifferentconditionsandidentifythemainfactorsofimpactionofgraft,thelastoptimizinggraftprocess.Thestructureandthermalpropertyofgraftedpolymerswerecharacte

4、rizedthroughFTIR,DSC,contact-angleandmeltingflowrate(MFR).Theresultsshowthat:Theoptimumsinglemonomergraftingconditionisthat,PP10.00g,monomer0.70gandinitiator0.03g,interfacialagentxylene1mL,dispersantagentether1mL,reaction2hat85°C(initiator1)and100°C(initiator2).Theoptimumbinarymonomergraft

5、ingconditionisthat,PP10.00g,monomer0.60gandinitiator0.03g,WEA:WMAH=7c3binary-monomer,interfacialagentxylene1mL,dispersantagentether1mL,reaction2hat85C(initiator1).CharacterizationtestresultsofgraftedproductsindicatethatthemonomewereindeedgraftedontoPPchains.Itsthermalpropertieshadbeenimprovedobvious

6、ly.Itscontact-anglewaslowerthanpurePP,whichprovedthathydrophilicityhadbeensignificantlyimproved.Andthegraftingproductsremainitsversatilephysicalproperties.【關(guān)鍵詞】固相接枝共聚改性聚丙烯雙單體【英文關(guān)鍵詞】solidgraftingcopolymerizationmodificationPPbinarymonomer【目錄】聚丙烯固相多單體接枝改性技術(shù)研究摘要4-5Abstract5第一章概述9-251.1聚丙烯簡(jiǎn)介9-141.1.1基本性

7、質(zhì)91.1.2分子結(jié)構(gòu)9-101.1.3生產(chǎn)工藝10-111.1.4產(chǎn)品用途111.1.5回收利用和能源再生11-141.2聚丙烯接枝改性14-241.2.1接枝改性方法14-161.2.2固相法影響因素16-181.2.3聚丙烯接枝機(jī)理18-221.2.4固相聚丙烯接枝產(chǎn)物的應(yīng)用22-241.3課題的提出和意義24-25第二章實(shí)驗(yàn)部分25-292.1實(shí)驗(yàn)儀器和原料25- 262.1.1實(shí)驗(yàn)儀器252.1.2實(shí)驗(yàn)原料25-262.2實(shí)驗(yàn)操作26-282.2.1原料的精制262.2.2固相接枝的實(shí)驗(yàn)方法26- 272.2.3固相接枝產(chǎn)物的提純272.2.4接枝率和接枝效率的計(jì)算27-282.3產(chǎn)物表征28-292.3.1FTIR表征282.3.2DSC表征282.3.3水潤(rùn)濕角測(cè)定282.3.4MFR和力學(xué)性能測(cè)試282.3.5熔點(diǎn)分析28-29第三章結(jié)果與討論29-423.1單一單體固相接枝反應(yīng)29-363.1.1引發(fā)劑用量的影響29-303.1.2單體用量的影響30-313.1.3反應(yīng)溫度的影33-343.1.6界面劑用量的影響響35-363.1.8基體粒徑的影響36-393.2.1雙單體比例的影響37-383.2.3引發(fā)劑用量的影響39-423.3.1FTIR表征39-40響31-323.1.4反應(yīng)時(shí)間的影響潤(rùn)濕角測(cè)定4032-333.1.5引發(fā)體系的影響34-353.1