A kind of preparation method of polytetrafluoroethylene and high-density polyethylene blending compatibilizer
A technology of high-density polyethylene and polytetrafluoroethylene, which is applied in the field of preparation of polytetrafluoroethylene and high-density polyethylene blending compatibilizers, can solve the problems of low compatibility, affecting the use effect of industrial devices, and blending systems Performance degradation and other issues to achieve the effect of improving compatibility
Active Publication Date: 2016-11-30
QUZHOU ZHONGTONG CHEM
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Problems solved by technology
[0005] Due to the good chemical stability of PTFE and low friction coefficient (friction coefficient = 0.05), the melt blending of PTFE and HDPE can be used to develop self-lubricating materials suitable for optical cable protective sleeves, but due to the low friction coefficient of HDPE and PTFE There is a large difference in structure and polarity, so the compatibility between the two is small, and the performance of the blend system will be greatly reduced when simply blended. Adding polyolefin-maleic anhydride graft material can partially improve the compatibility. However, the disadvantages of poor compatibility between polymers and uneven mixing cannot be solved fundamentally, which affects the use effect in industrial devices.
Method used
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Experimental program
Comparison scheme
Effect test
preparation example Construction
[0022] The invention provides a method for preparing a blending compatibilizer of polytetrafluoroethylene and high-density polyethylene, which is achieved through the following steps:
[0023] JX-3 maleic anhydride grafted low-density polyethylene compatibilizer, produced by Nanjing Juxing Polymer Material Co., Ltd.
[0024] In parts by weight, add 500 parts of acetone to the reactor, 100 parts of JX-3 maleic anhydride grafted low-density polyethylene compatibilizer, 8 parts of CF 3 CF 2 CF 2 (OCF 2 CF 2 CF 2 ) 3 OCF=CF 2 The monomers are mixed, and then 0.2 parts of benzoyl peroxide are added and stirred evenly. 80. Reaction for 10-h. After the reaction, the material is discharged and dried to obtain the patented product. The number is SX-1.
Embodiment 2
[0026] CF 3 CF 2 CF 2 (OCF 2 CF 2 CF 2 ) 3 OCF=CF 2 The monomer weight parts is 20 parts, and the others are the same as in Example 1, to obtain the patented product. The number is SX-2.
Embodiment 3
[0028] CF 3 CF 2 CF 2 (OCF 2 CF 2 CF 2 ) 3 OCF=CF 2 The monomer weight parts is 5 parts, and the others are the same as in Example 1, to obtain the patented product. The number is SX-2.
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Abstract
A preparation method of polytetrafluoroethylene and high-density polyethylene blending compatibilizer The present invention provides a preparation method of polytetrafluoroethylene and high-density polyethylene blending compatibilizer: A small amount of fluorocarbon polyether monomer PAVE with double bonds is introduced into the density polyethylene compatibilizer HDPE‑g‑MAH to generate grafts of polymaleic anhydride and fluorocarbon polyether surface-coated high-density polyethylene Copolymer HDPE / MAH / PAVE can be used as a compatibilizer to improve the compatibility of PE / PTFE polymers. The compatibilization effect is better than that of HDPE‑g‑MAH as an interfacial compatibilizer, and the PTFE / HDPE blend system can be fully contacted during the pulverization and mixing process, and the dispersion is more uniform.
Description
Technical field [0001] The invention relates to a method for preparing a blending compatibilizer of polytetrafluoroethylene and high-density polyethylene. Background technique [0002] Resin materials have outstanding physical and mechanical properties, chemical stability, and excellent electrical insulation, and have a wide range of uses in agriculture, defense industry and other fields. HDPE used as a pipe material is increasingly favored by people for its excellent performance such as temperature change resistance, wear resistance, corrosion resistance, non-toxic, light weight, low price, finished product manufacturing and use, and simple installation and maintenance procedures and low cost. At present, the use of HDPE in all aspects is very large, almost infiltrating all aspects of life, especially the application of pipes has reached the second place in the use of plastic pipes, second only to PVC pipes. However, HDPE material has some obvious defects in performance, especi...
Claims
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IPC IPC(8): C08F285/00C08F216/14C08L51/00C08L27/18C08L23/06
Inventor 许益生刘创新王金龙
Owner QUZHOU ZHONGTONG CHEM