2023年全國碩士研究生考試考研英語一試題真題(含答案詳解+作文范文)_第1頁
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1、Functional AdditivesPoly bd® and Krasol® Resins羥基封端聚丁二烯應(yīng)用,王孝平SMA & Krasol 客戶經(jīng)理,Poly bd® Resins,自由基聚合 不飽和的多羥基液體化合物 非極性結(jié)構(gòu) 低玻璃化溫度 (Tg),Poly bd® Resins: 標(biāo)準(zhǔn)產(chǎn)品,全球兩個(gè)工廠: - Channelview, TX (Sart

2、omer) - Tokuyama, Japan (Sartomer Idemitsu),Poly bd 反應(yīng): 羥基,Poly bd® 反應(yīng): 雙鍵,Common Uses for Poly bd® Polyurethanes? Electrical Potting and Encapsulation 電子封裝? Adhes

3、ives and Sealants 粘合劑和密封膠? Binders? Waterproof Coatings and Membranes 防水涂層? Asphalt Filled Construction Products 建筑用的瀝青混合料,Specialty Grade: Poly IPHydroxyl-Terminated Polyisoprene Polyol,,Special Grade: Poly bd&

4、#174; EPOL Resin (Hydrogenated, OH-Terminated Polyisoprene),? Liquid Resin : Easy Handling And Formulation? Gives Coatings With Excellent Heat And UV Resistance 提供極好的耐熱性和UV穩(wěn)定性和? Used To Prepare Adhesives, Seala

5、nts, Coating And Electric Insulation Formulations 用于涂料,粘合劑,電子封裝等,Special Grades: Poly bd® 600, 605 and 700 Resins,Low MW Resin, viscous liquid 600 and 605 derived from Polybd R20LM resin, differ in % epoxide

6、 700 grade derived from Poly bd R45HTLO resin Predominantly epoxidized cis-double bonds Dual functionality: hydroxyl and epoxide Favor acidic curing,Electric Encapsulation,Reaction rate between Ricon®MA and Poly

7、bd® resin can be controlled by catalysts Thermal stability is better than urethane linkageHydrolytic stability needs improvement,Specialty Grade: Poly bd® R45VT Resin(Vinyl Functionalized Polybutadiene),R

8、eactive vinyl end functionality by reacting end hydroxyl group with TMI Viscosity @ 25°C : 15,500 cps Peroxide cure to form re-enterable encapsulant

9、Peroxide cure with acrylates to form copolymer network,Peroxide Cured Re-enterable Encapsulant,Krasol® Products,Krasol LBH 2000, 3000 and 5000,Krasol LBH-P 2000, 3000 and 5000,** secondary* primary? @ 50C,Krasol&#

10、174;,Krasol 主要品種,推薦用于Krasol® 反應(yīng)的擴(kuò)鏈劑,BDO是在用聚酯或聚醚合成PU中使用廣泛的擴(kuò)鏈劑很多二元醇都和HTPB相容不好推薦DIPA和EHD用作擴(kuò)鏈劑,DIPA,EHD,用Krasol和聚酯多元醇合成TPU,16,- Reference, date, place,PolyolsKrasol LBH-P 2000 resinDesmophen CP-3240 (Bayer): polycap

11、rolactoneDesmophen S-102-40 (Bayer): polybutylene adipateIsocyanate4,4’-MDIChain extender1,4-butanediol (BDO)2-ethyl-1,3-hexanediol (EHD),,,,Product Overview – Available Products,Poly bd 2035 TPUCommercial grade

12、Hardness: 82ANot solvent solubleCompatible with polyolefinPRO 7840Developmental gradeHardness: 80ASoluble in a number of solventsCompatible with rubber compounds,TPU 7840 versus TPU 2035 Properties,Hydrogenated

13、 HTPB,Liquid resin Improved weather and thermal stability; for coatings and thermoplastic modifications Commercial products - Lowinox 22M46-stabilized Krasol HLBHP-2000 and 3000 resin,HLBH-P 2000 and 3

14、000,x/y=60/40,,,SR 307 Polybutadiene Diacrylate,Derived from Krasol LBH gradeSR307 (from LBH 2000) having viscosity 9000 cps at 25 °C, 600-650 cps at 60°CCure with peroxides to form re-enterable encapsulant,

15、High Hydroxyl Functionality Krasol LBH 2040,OH functionality is increased to 4 Improved crosslink density of polyurethanes,Special Grades: Poly bd® Resin with Low Hydroxyl Functionalities,? Polyurethane Resin fr

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