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荧光增白剂厂家诀窍 进步PVC耐热性的办法


网址:http://www.scvc8.com  时间:2018-11-01 10:24:05

荧光增白剂厂家诀窍 进步PVC耐热性的办法
Fluorescent whitening agent's know-how to improve PVC's heat resistance
1.VC共聚物
1.VC copolymer
VC(氯乙烯)与其它单体共聚树脂的组成中若含有极性或大基团的组分,则共聚物的热变形温度相应添加,耐热性比PVC好,制得耐热制品。PVC的软化温度为78℃,而共聚物氯乙烯-偏氯乙烯、氯乙烯一甲基丙烯酸甲酯 、氯乙烯一丙烯睛的软化温度分别为100~130、85 、140~150℃。
If the composition of VC (vinyl chloride) and other monomer copolymer resin contains polar or large groups, the copolymer's thermal deformation temperature is added correspondingly, and the heat resistance is better than PVC, so the heat-resistant products are prepared. The softening temperature of PVC is 78 C, while the softening temperatures of vinyl chloride - vinylidene chloride, vinyl chloride - methyl methacrylate and vinyl chloride - acrylonitrile are 100 ~ 130, 85, 140 ~ 150 C, respectively.
2.PVC氯化
2.PVC chlorination
氯化聚氯乙烯是由PVC树脂氯化而制得的,其含氯量为62%~68%。氯化聚氯乙烯可在100℃下连续运用(比PVC高20~35℃),比较高运用温度可达100~ 105℃。且化学稳定性、难燃性、耐寒性均优于PVC。但氯化设备防腐要求较严.树脂不易加工,冲击韧性较差又限制了它的运用和开展。
Chlorinated polyvinyl chloride is prepared by chlorination of PVC resin, and its chlorine content is 62%~68%. Chlorinated polyvinyl chloride can be used continuously at 100 C (20 ~ 35 C higher than PVC), and the maximum operating temperature can reach 100 ~ 105 C. The chemical stability, flammability and cold resistance are better than PVC. However, the chlorination equipment has strict anticorrosion requirements, the resin is not easy to process, and the poor impact toughness limits its application and development.
3.PVC交联
3.PVC crosslinking
交联PVC可用辐射交联法和化学交联法来制取。交联后的PVC制品比一般PVC制品机械强度高、尺度稳定性好、耐热变形、耐磨、耐化学药品等功能优秀。辐射交联电线可在100~110℃下连续运用。
Crosslinking PVC can be prepared by radiation crosslinking and chemical crosslinking. The cross-linked PVC products have higher mechanical strength, better dimensional stability, heat resistance, deformation resistance, wear resistance, chemical resistance and other excellent functions than ordinary PVC products. Radiation crosslinking wires can be used continuously at 100~110 C.
4.PVC与其它聚合物共混
4.PVC blends with other polymers
PVC与其它聚合物按必定份额混合,共混物的功能(充分相容)与PVC相比有所进步。由于相容性的两种聚合物混炼后,能够到达分子级互融,形成单相结构,从而使共混物功能得到补充和加强,如PVC/PS,PVC/PE,PVC/CPVC等。
PVC is mixed with other polymers in a certain proportion, and the function of the blend (fully compatible) is improved compared with PVC. Because of the compatibility of the two polymers after mixing, can reach the molecular level of mutual fusion, forming a single-phase structure, so that the blend function is supplemented and strengthened, such as PVC / PS, PVC / PE, PVC / CPVC and so on.
荧光增白剂厂家
5.参加耐热改性剂
5. take part in heat resistant modifier.
耐热改性剂是为了进步PVC耐热性而研制生产的具有较高耐热性的一类聚合物。
Heat-resistant modifier is a kind of polymer with high heat-resistance developed to improve the heat-resistance of PVC.
(1)聚戊二酰亚胺:由聚甲基丙烯酸甲酯与CH3NH4反应制得。
(1) polyamyl two imide: prepared by reaction of polymethyl methacrylate with CH3NH4.
(2)SMA(苯乙烯一马来酐共聚物)是美国厂家推出的较好的PVC耐热改性剂。
(2) SMA (styrene maleic anhydride copolymer) is a better PVC heat resistant modifier released by American manufacturers.
(3)HT-510(日)是丙烯酸系列亚胺基共聚物。
(3) HT-510 (day) is an acrylic series imino copolymer.
(4)S700N是α-甲基苯乙烯-丙烯腈共聚物。
(4) S700N is a copolymer of alpha methylstyrene acrylonitrile.
(5)ABS类耐热改性剂:A15、A50B、A10(日本钟渊)
(5) class ABS heat-resistant modifiers: A15, A50B and A10 (Zhong Yuan, Japan)
(6)MBS类耐热改性剂:三菱H602、605、632.
(6) class MBS heat-resistant modifiers: MITSUBISHI H602, 605, 632.
(7)别的,还有ELIX200、300;GE Blendex 702、703、586、975等。
(7) there are also ELIX200, 300; GE Blendex 702, 703, 586, 975 and so on.
6.PVC中添加无机填料
Adding inorganic filler in 6.PVC
参加必定量填料后.能进步PVC耐热性。常用的填料有:重质碳酸钙、轻质碳酸钙、沉淀碳酸钙、锻烧陶上、硫酸钡、赤泥、钛自粉等。
After participating in a certain amount of filler, it can improve the heat resistance of PVC. Commonly used fillers are: heavy calcium carbonate, light calcium carbonate, precipitated calcium carbonate, calcined pottery, barium sulfate, red mud, titanium powder and so on.
7.PVC中参加玻璃纤维
Participation in glass fiber in 7.PVC
PVC中参加20%~30%玻璃纤维,在不加(或少加)增塑剂的情况下,其耐热性可进步到100℃以上。特别是长纤维增强的PVC,其热变形温度添加更为明显。
The heat resistance of PVC with 20% ~ 30% glass fiber without plasticizer can be improved to over 100 C. Especially for long fiber reinforced PVC, the thermal deformation temperature is more obvious.
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To sum up all the above information provided by Shandong Jiling Chemical Co., Ltd, if you want to know more about fluorescent brightener manufacturers, visit our official website: http://www.scvc8.com, thank you for your support!

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