A melt processable composition and method of making

A technology of melt processing and composition, applied in the field of melt-processed compositions, can solve problems such as hindering the application of materials that can be melt-processed

Inactive Publication Date: 2014-04-23
UNIV OF MASSACHUSETTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Unfortunately, crystallization of melt-processable materials, even with the use of nucleating agents, can produce materials that form both large crystallites that scatter visible light and form hazy films, preventing the use of certain melt-processable materials. in some applications

Method used

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  • A melt processable composition and method of making
  • A melt processable composition and method of making
  • A melt processable composition and method of making

Examples

Experimental program
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Embodiment

[0041] Melt processable polymers are - brand fluoropolymer, which is PVDF commercially available from Arkema Inc., King of Prussia, Pennsylvania, USA. Three types of nucleating agents were melt blended to the PVDF. First, using electropositive nucleating agents (NAp) tetrabutylphosphonium hexafluorophosphate (NAp-1), ethyltriphenylphosphonium bromide (NAp-2), n-heptyltriphenylphosphonium bromide (NAp -3), N-acetonylpyridinium bromide (NAp-4), 1-butyl-1-methylpyrrolidinium bromide (NAp-5), tetrabutylammonium hydrogensulfate (NAp-6) and Triphenylsulfonium tetrafluoroborate (NAp-7) was used without further purification. Second, use negatively charged nucleating agents (NAn) sodium lauryl sulfate (NAn-1), sodium n-tridecyl sulfate (NAn-2), 1-naphthyl phosphate monosodium salt monohydrate (NAn-3 ), and third, use the charge neutral nucleating agent Flavanthone (charge neutral). The nucleating agent is selected to have a melting temperature near or above the melting temperature...

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Abstract

A composition includes a) a melt processable polymer including at least one chemical moiety having a partial charge; and b) a nucleating agent having a surface charge that is opposite the partial charge of the chemical moiety of the polymer, wherein the nucleating agent accelerates the rate of crystallization of the melt processable polymer; wherein the nucleating agent has a melting point greater than the melting point of the melt processable polymer. In an embodiment, a method of making the composition is also provided.

Description

technical field [0001] The present disclosure generally relates to melt processable compositions and methods of making such melt processable compositions. Background technique [0002] It is technically desirable to increase both the crystallization rate and the degree of crystallization of melt processable polymers. For example, control of the crystallinity of melt processable polymers is useful for improving properties such as haze and mechanical properties. Nucleating agents are widely used to control and enhance the mechanical properties, crystallinity, specific morphological characteristics, dimensional stability, optical clarity (crystallite size) and enhance the processing of melt processable polymers. speed. In the absence of nucleating agents, melt processable polymers may not crystallize at a rate that provides desirable properties for certain applications. [0003] When used, the effectiveness of nucleating agents depends on increasing the surface area and lowe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/00C08L27/12C08L67/04C08K5/52C08K5/34
CPCC08K5/3415C08K5/0083C08L27/16C08L67/04C08K3/34C08K5/34C08K5/52C08L27/12C08L101/00
Inventor S·L·徐Y·吴C·C·昂纳克D·伯拉维特D·威廉姆斯
Owner UNIV OF MASSACHUSETTS
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