CN108559056A - 一种高韧性氰酸酯无缝管制备方法 - Google Patents

一种高韧性氰酸酯无缝管制备方法 Download PDF

Info

Publication number
CN108559056A
CN108559056A CN201810394602.8A CN201810394602A CN108559056A CN 108559056 A CN108559056 A CN 108559056A CN 201810394602 A CN201810394602 A CN 201810394602A CN 108559056 A CN108559056 A CN 108559056A
Authority
CN
China
Prior art keywords
steel pipe
cyanate
temperature
performed polymer
tubing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810394602.8A
Other languages
English (en)
Inventor
乐少兵
李林瑞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201810394602.8A priority Critical patent/CN108559056A/zh
Publication of CN108559056A publication Critical patent/CN108559056A/zh
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/48Polyethers
    • C08G18/4854Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30Low-molecular-weight compounds
    • C08G18/32Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3203Polyhydroxy compounds
    • C08G18/3206Polyhydroxy compounds aliphatic
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/4009Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
    • C08G18/4018Mixtures of compounds of group C08G18/42 with compounds of group C08G18/48
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/42Polycondensates having carboxylic or carbonic ester groups in the main chain
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/65Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6603Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
    • C08G18/6607Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
    • C08G18/6611Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203 having at least three hydroxy groups
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72Polyisocyanates or polyisothiocyanates
    • C08G18/74Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7614Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

本发明涉及一种高韧性氰酸酯无缝管制备方法,包括以下步骤:步骤1)、以质量百分比配备浇注混合物原料;步骤2)、配备钢管;步骤3)、制得预聚体;步骤4)、制得氰酸酯预聚体;步骤5)、将步骤2)处理好的钢管安装在装有模具的离心机上保持两端的注料口在水平方向上,对钢管进行加热使其温度保持在60‑70℃;步骤6)、制得浇注混合物;步骤7)、浇注成型;步骤8)、管材硫化;步骤9)、将步骤8)硫化好的管材取出进行内外表面清洁处理,制得氰酸酯无缝管,经检验合格后入库。通过本发明,通过本发明的生产工艺,提高了管道的耐磨性能、加强了管道的韧性、有效的防止管道分层。

Description

一种高韧性氰酸酯无缝管制备方法
技术领域
本发明涉及一种高韧性氰酸酯无缝管制备方法,属于管道设计技术领域。
背景技术
由于在选煤、矿山、冶金等行业中输送固体颗粒、矿砂、泥浆等磨蚀性介质对管道耐磨性要求高,用聚氨酯材料作为内衬层、钢管为外保护层成为耐磨管道的首选材料, 但是聚氨酯弹性体在较强持久应力作用下会发生卷曲变形, 阻碍固体颗粒、粉体、浆体、液体等介质的输送,在工矿条件恶劣的环境下甚至会发生堵塞爆炸, 钢管在较强外力冲击下会断裂破损,起不到保护的作用,对工矿企业的人身财产造成危害,后果严重。
发明内容
本发明的目的在于针对上述现有技术存在的缺陷,提供一种能够提高管道的耐磨性能、加强管道的韧性、有效的防止管道分层的高韧性氰酸酯无缝管制备方法。
本发明的目的是这样实现的,一种高韧性氰酸酯无缝管制备方法,其特征是,包括以下步骤:
步骤1)、以质量百分比配备浇注混合物原料,四氢呋喃环氧丙烷共聚醚 60%~80%、 甲苯二异氰酸酯 4%~20%、 硫化剂 MOCA5%~15% 、聚酯二元醇 5%~11%,其余为交联剂三元醇N3010;
步骤2)、配备钢管,将钢管内外表面进行喷砂处理后,以20cm为间距,将钢管的管身均匀的开5cm的直径孔,并在室温下进行风干;
步骤3)、将步骤 1) 配备的四氢呋喃环氧丙烷共聚醚倒入反应釜中,开动搅拌器,同时打开加热电源开始加热升温, 再将已配备的甲苯二异氰酸酯、聚酯二元醇、交联剂三元醇N3010缓慢地倒入反应釜中,当温度升至50-60℃时关闭加热电源,待其自然升温使温度控制在 80-90℃之间,在 80-90℃的温度范围内,连续搅拌 90-100 分钟后,停止搅拌,将反应釜密闭静置 24 小时,制得预聚体;
步骤4)、将步骤 3)制得的预聚体进行加热,同时开动搅拌器进行搅拌,抽真空脱气泡,真空过程中温度控制在 95-100℃,真空时间为 50-70 分钟,制得氰酸酯预聚体;
步骤5)、将步骤 2)处理好的钢管安装在装有钢管模具的离心机上保持两端的钢管模具注料口在水平方向上,钢管置于钢管模具内,对钢管进行加热使其温度保持在 60-70℃;
步骤6)、将步骤 4)制得氰酸酯预聚体温度控制在60-80℃,加入步骤 1)配备的硫化剂MOCA,一边加入一边搅拌直至清澈透明为止,制得浇注混合物;
步骤7)、将步骤 6)制得的浇注混合物从两端注料口迅速注入到模具中,并使浇注混合物在模具中自然水平,同时保证钢管内外氰酸酯的厚度达到设计要求,启动离心机进行浇注成型,浇注时间为 30 分钟,温度控制在70-80℃;
步骤8)、将步骤7)成型好的管材从离心机取出,送入硫化仓进行后硫化,硫化时间 8小时,温度控制在 100-110℃ ;
步骤9)、将步骤 8)硫化好的管材取出进行内外表面清洁处理,制得氰酸酯无缝管,经检验合格后入库。
本发明的特点在于:
1、交联剂三元醇N3010的加入起到了应力分散作用,有效的提高了氰酸酯因长期使用温度升高耐磨性降低的力学性能。
2、聚酯二元醇的加入提高-NCO质量分数,使得硬段含量增加,相应的软段含量比例减少,分子间氢键和作用力增强,结晶性能也提高;撕裂强度增大,扯断伸长率降低,拉伸强度则先增大后降低,在5%达到最大,有效的提高了氰酸酯因长期使用温度升高韧性降低的力学性能。
3、钢管开孔,使钢管内外的氰酸酯有效结合,降低因环境因素致使钢管和氰酸酯分离现象。钢管开孔有效的降低了钢管的刚性,能有效的分担氰酸酯的冲击力提高管道整体韧性。
4、氰酸酯和钢管的复合采用离心浇注一次性成型技术。 该工艺生产技术简单,不需要进行翻边。
5、通过本发明的生产工艺, 生产出来的产品具有高韧性、高耐磨、 耐酸碱、 防结垢、 使用寿命长、 抗机械冲击等综合性能。与普通钢管相比寿命可提高 10~15 倍, 与纯塑料管相比寿命可提高 5~10 倍,与橡胶相比寿命可提高 4~8 倍。高韧性氰酸酯无缝管可以防止因氰酸酯破损而发生的卷曲变形, 降低了管材在工矿条件恶劣的环境中输送磨蚀性介质时由于内衬材料破损发生卷曲堵塞管道引发爆炸的危险和因钢管破损更换管道的危险。
本发明中,模具为钢管制作而成,因为氰酸酯为硫化成型前是流动的液体,要将氰酸酯与钢管均匀的结合,需将安装在钢管模具内,同时保证钢管与钢管模具在一个同心上。
具体实施方式
以下对本发明作进一步的说明。
一种高韧性氰酸酯无缝管制备方法,包括以下步骤:
步骤1)、以质量百分比配备浇注混合物原料,四氢呋喃环氧丙烷共聚醚 60%~80%、 甲苯二异氰酸酯 4%~20%、 硫化剂 MOCA5%~15% 、聚酯二元醇 5%~11%,其余为交联剂三元醇N3010;
步骤2)、配备钢管,将钢管内外表面进行喷砂处理后,以20cm为间距,将钢管的管身均匀的开5cm的直径孔,并在室温下进行风干;
步骤3)、将步骤 1) 配备的四氢呋喃环氧丙烷共聚醚倒入反应釜中,开动搅拌器,同时打开加热电源开始加热升温, 再将已配备的甲苯二异氰酸酯、聚酯二元醇、交联剂三元醇N3010缓慢地倒入反应釜中,当温度升至50-60℃时关闭加热电源,待其自然升温使温度控制在 80-90℃之间,在 80-90℃的温度范围内,连续搅拌 90-100 分钟后,停止搅拌,将反应釜密闭静置 24 小时,制得预聚体;
步骤4)、将步骤 3)制得的预聚体进行加热,同时开动搅拌器进行搅拌,抽真空脱气泡,真空过程中温度控制在 95-100℃,真空时间为 50-70 分钟,制得氰酸酯预聚体;
步骤5)、将步骤 2)处理好的钢管安装在装有钢管模具的离心机上保持两端的钢管模具注料口在水平方向上,钢管置于钢管模具内,对钢管进行加热使其温度保持在 60-70℃;
步骤6)、将步骤 4)制得氰酸酯预聚体温度控制在60-80℃,加入步骤 1)配备的硫化剂MOCA,一边加入一边搅拌直至清澈透明为止,制得浇注混合物;
步骤7)、将步骤 6)制得的浇注混合物从两端注料口迅速注入到模具中,并使浇注混合物在模具中自然水平,同时保证钢管内外氰酸酯的厚度达到设计要求,启动离心机进行浇注成型,浇注时间为 30 分钟,温度控制在70-80℃;
步骤8)、将步骤7)成型好的管材从离心机取出,送入硫化仓进行后硫化,硫化时间 8小时,温度控制在 100-110℃ ;
步骤9)、将步骤 8)硫化好的管材取出进行内外表面清洁处理,制得氰酸酯无缝管,经检验合格后入库。

Claims (1)

1.一种高韧性氰酸酯无缝管制备方法,其特征是,包括以下步骤:
步骤1)、以质量百分比配备浇注混合物原料,四氢呋喃环氧丙烷共聚醚 60%~80%、 甲苯二异氰酸酯 4%~20%、 硫化剂 MOCA5%~15% 、聚酯二元醇 5%~11%,其余为交联剂三元醇N3010;
步骤2)、配备钢管,将钢管内外表面进行喷砂处理后,以20cm为间距,将钢管的管身均匀的开5cm的直径孔,并在室温下进行风干;
步骤3)、将步骤 1) 配备的四氢呋喃环氧丙烷共聚醚倒入反应釜中,开动搅拌器,同时打开加热电源开始加热升温, 再将已配备的甲苯二异氰酸酯、聚酯二元醇、交联剂三元醇N3010缓慢地倒入反应釜中,当温度升至50-60℃时关闭加热电源,待其自然升温使温度控制在 80-90℃之间,在 80-90℃的温度范围内,连续搅拌90-100分钟后,停止搅拌,将反应釜密闭静置 24 小时,制得预聚体;
步骤4)、将步骤 3)制得的预聚体进行加热,同时开动搅拌器进行搅拌,抽真空脱气泡,真空过程中温度控制在 95-100℃,真空时间为 50-70 分钟,制得氰酸酯预聚体;
步骤5)、将步骤 2)处理好的钢管安装在装有钢管模具的离心机上保持两端的钢管模具注料口在水平方向上,钢管置于钢管模具内,对钢管进行加热使其温度保持在 60-70℃;
步骤6)、将步骤 4)制得氰酸酯预聚体温度控制在60-80℃,加入步骤 1)配备的硫化剂MOCA,一边加入一边搅拌直至清澈透明为止,制得浇注混合物;
步骤7)、将步骤 6)制得的浇注混合物从两端注料口迅速注入到钢管模具中,并使浇注混合物在钢管模具中自然水平,同时保证钢管内外氰酸酯的厚度达到设计要求,启动离心机进行浇注成型,浇注时间为 30 分钟,温度控制在70-80℃;
步骤8)、将步骤7)成型好的管材从离心机取出,送入硫化仓进行后硫化,硫化时间 8小时,温度控制在 100-110℃ ;
步骤9)、将步骤 8)硫化好的管材取出进行内外表面清洁处理,制得氰酸酯无缝管,经检验合格后入库。
CN201810394602.8A 2018-04-27 2018-04-27 一种高韧性氰酸酯无缝管制备方法 Pending CN108559056A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810394602.8A CN108559056A (zh) 2018-04-27 2018-04-27 一种高韧性氰酸酯无缝管制备方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810394602.8A CN108559056A (zh) 2018-04-27 2018-04-27 一种高韧性氰酸酯无缝管制备方法

Publications (1)

Publication Number Publication Date
CN108559056A true CN108559056A (zh) 2018-09-21

Family

ID=63537201

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810394602.8A Pending CN108559056A (zh) 2018-04-27 2018-04-27 一种高韧性氰酸酯无缝管制备方法

Country Status (1)

Country Link
CN (1) CN108559056A (zh)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101178137A (zh) * 2007-12-08 2008-05-14 蔡海华 一种加强型骨架钢塑复合管
CN104057625A (zh) * 2014-06-25 2014-09-24 扬州巨业耐磨复合材料有限责任公司 钢丝网骨架聚氨酯复合管离心浇注成型工艺

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101178137A (zh) * 2007-12-08 2008-05-14 蔡海华 一种加强型骨架钢塑复合管
CN104057625A (zh) * 2014-06-25 2014-09-24 扬州巨业耐磨复合材料有限责任公司 钢丝网骨架聚氨酯复合管离心浇注成型工艺

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
张晓华和曹亚: "交联对透明聚氨酯弹性体结构与性能的影响", 《高分子材料科学与工程》 *

Similar Documents

Publication Publication Date Title
CN101900227B (zh) 陶瓷颗粒强化复合材料内衬金属管及其制造方法
CN102814888A (zh) 聚氨酯弹性体内衬金属复合输送管及其制备方法与应用
CN107443644B (zh) 一种含etpu发泡颗粒的pu实心单车轮胎及其制造方法
CN101827655B (zh) 复合覆钢磨机衬里及其制造方法
CN107141538A (zh) 一种推土机轮胎耐磨胎面胶及其制备方法
CN112280545A (zh) 一种非金属可降解自适应暂堵球
CN106050724A (zh) 一种内衬树脂碳化硅的脱硫泵及其制备方法
CN106044761A (zh) 制备石墨烯的高剪切力耐磨橡胶磨盘及其制备方法和应用
CN1867633A (zh) 阀门用树脂制构件
CN1659005B (zh) 车载式混凝土搅拌鼓及其制造方法
CN102350923A (zh) 一种不会爆胎的开式结构轮胎
CN101397400A (zh) 履带车辆负重轮纳米改性聚氨酯弹性体胎体材料及浇注工艺
CN108559056A (zh) 一种高韧性氰酸酯无缝管制备方法
CN104057625B (zh) 钢丝网骨架聚氨酯复合管离心浇注成型工艺
CN108164981A (zh) 聚氨酯筛板及其制备方法
CN104626622B (zh) 在金属构件上加装复合耐磨蚀层的制备工艺
CN102140188B (zh) 矿井提升机用的摩擦衬垫及其制备方法
CN111732710A (zh) 一种泥浆泵活塞用环氧改性聚氨酯材料及制备方法
CN108610468A (zh) 一种高韧性氰酸酯叶轮盖板制备方法
CN100455431C (zh) 纳米结构金属丝网复合衬板制备工艺
CN111037838A (zh) 一种耐磨型防滑橡胶鞋底及其制备方法
CN110744876A (zh) 一种多层改性浇铸尼龙材料
CN207224418U (zh) 在金属构件上加装复合耐磨蚀层的随形模具
CN114349459A (zh) 一种高冲击韧性的人造石英石板材及其制备方法
US20110176974A1 (en) Crystallizer

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20180921