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Composite polypropylene nucleating agent and medical polypropylene material prepared thereby

A technology for compounding polypropylene and polypropylene materials, which is applied in the field of polymer functional materials, can solve problems such as limiting the application of polypropylene, increasing the content of leachables, and large leachables, so as to improve crystallization performance and transparency, increase added value, The effect of reducing the dissolution value

Active Publication Date: 2018-10-23
贵州卡布国际生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the type and content of the modifier are not properly controlled, the leachable content of the polypropylene material will increase greatly, and the unqualified rate of the leachate is n-hexane > 65% ethanol > water, which leads to the fact that polypropylene is used as a drug pack material. Facing the unqualified risk of large extractables, which greatly limits the application of polypropylene in the field of medical plastics

Method used

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  • Composite polypropylene nucleating agent and medical polypropylene material prepared thereby
  • Composite polypropylene nucleating agent and medical polypropylene material prepared thereby
  • Composite polypropylene nucleating agent and medical polypropylene material prepared thereby

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] The composite nucleating agent prepared by spray drying comprises the steps:

[0074] 1): Spray-dried precursor mixed suspension preparation, 20ml nano-silica sol (solid content 30%, particle size 12nm), 4.24mmol γ-aminopropyltriethoxysilane coupling agent (KH550), 4.24mmol2,2 ′-methylene-bis(4,6-di-tert-butylphenol) phosphate, 30% by mass of sodium dodecyl sulfonate are mixed, then distilled water is added as a solvent, after ultrasonic dispersion for 15 minutes, the mixture is uniformly dispersed without precipitation , to obtain a spray-dried precursor mixed suspension.

[0075] 2): The spray-dried precursor suspension prepared in step 1) is spray-dried. The air inlet temperature of the spray dryer is 110-140°C, and the outlet air temperature of the spray dryer is 40-80°C. The solid dry powder is collected in a fully separated separator to obtain a composite nucleating agent powder, and its form is as follows: figure 1 shown.

[0076] from figure 1 It can be seen...

Embodiment 2

[0078] The composite nucleating agent prepared by spray drying comprises the steps:

[0079] 1): Spray-dried precursor mixed suspension preparation, 20ml nano-silica sol (solid content 30%, particle size 12nm), 4.24mmol γ-aminopropyltriethoxysilane coupling agent (KH550), 4.24mmol2,2 ′-methylene-bis(4,6-di-tert-butylphenol) phosphate, 50% by mass of sodium dodecyl sulfonate are mixed, then distilled water is added as a solvent, after 15 minutes of ultrasonic dispersion, the mixture is uniformly dispersed without precipitation , to obtain a spray-dried precursor mixed suspension.

[0080] 2): The spray-dried precursor suspension prepared in step 1) is spray-dried. The air inlet temperature of the spray dryer is 110-140°C, and the outlet air temperature of the spray dryer is 40-80°C. The solid dry powder is collected in a fully separated separator to obtain a composite nucleating agent powder, and its form is as follows: figure 2 shown.

[0081] from figure 2 It can be see...

Embodiment 3

[0083] The composite nucleating agent prepared by spray drying comprises the steps:

[0084] 1): Spray-dried precursor mixed suspension preparation, 20ml nano-silica sol (solid content 30%, particle size 12nm), 4.24mmol γ-aminopropyltriethoxysilane coupling agent (KH550), 4.24mmol2,2 '-methylene-bis(4,6-di-tert-butylphenol) phosphate, 20% by mass of sodium dodecyl carboxylate were mixed, then n-hexane was added as a solvent, and after ultrasonic dispersion for 15 minutes, the mixture was uniformly dispersed without Precipitate to obtain a spray-dried precursor mixed suspension.

[0085] 2): The spray-dried precursor suspension prepared in step 1) is spray-dried. The air inlet temperature of the spray dryer is 90-120°C, and the outlet air temperature of the spray dryer is 20-60°C. The solid dry powder is collected in a fully separated separator to obtain a composite nucleating agent powder, and its form is as follows: image 3 shown.

[0086] from image 3It can be seen tha...

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Abstract

The invention provides a composite polypropylene nucleating agent and a medical polypropylene material prepared thereby. The preparation method of the composite polypropylene nucleating agent comprises the following steps of: after mixing nano-silica sol, a silane coupling agent, phosphate, higher fatty acid salt and optional additive, adding a solvent, and then carrying out ultrasonic dispersionto obtain precursor suspension; then carrying out spray drying on the precursor suspension to obtain the composite polypropylene nucleating agent. The composite nucleating agent prepared by a spray-drying method has the beneficial effects that inorganic nanoparticles are adopted as a skeleton, then a little amount of organic matters are loaded on the surface of the skeleton, the structure mainly comprises inorganic particles, so that the safe and environment-friendly effects are better, and the cost is also greatly reduced; the medical polypropylene material with low dissolution, high heat resistance and high transparency has the advantages that the inorganic nano material with safety, no toxicity and no dissolution is used as a carrier of an organic additive, so that the addition amount of the organic additive can be reduced and the dissolution value of the organic matters in the composite material can be reduced.

Description

technical field [0001] The invention relates to the field of polymer functional materials, in particular to a composite polypropylene nucleating agent and a medical polypropylene material prepared therefrom. Background technique [0002] Adding nucleating agents to polypropylene is one of the most effective ways to improve the transparency of polypropylene. However, with the expansion of the application field of polypropylene, nucleating agents that simply increase transparency have been difficult to meet market demand. Traditional polypropylene nucleating agents are generally inorganic nucleating agents and organic nucleating agents. Inorganic nucleating agents have poor nucleating effects, while organic nucleating agents with significant nucleating effects are more expensive, and some also have high melting points. The case of uneven dispersion. At the same time, the impact toughness of polypropylene will also decrease after adding an organic nucleating agent. A large n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K13/06C08K9/12C08K3/36C08K5/544C08K5/523C08K5/42C08L23/12
CPCC08K3/36C08K5/42C08K5/523C08K5/544C08K9/12C08K13/06C08K2201/003C08K2201/011C08L2205/24C08L23/12
Inventor 李娟孙天伟向宇姝龙丽娟何文涛
Owner 贵州卡布国际生物科技有限公司