Transparent Nucleating Granules for High-Purity Polymer Dispersion
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Solution Overview
Problem
Existing nucleating agents face challenges with fluidity and purity, with solutions either increasing fluidity at the cost of reduced purity or vice versa, and issues with static electricity and dust during feeding processes.
Innovation Solution
A particulate nucleating agent is manufactured via a wet granulation method, ensuring high purity and desirable fluidity without additives, with a bulk density of 0.25-0.60 g/cm³ and average radial crushing strength of 1.0-15.0 N/cm, using sorbitol-based transparent nucleating agents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If powdery nucleating agent is used, then high purity is achieved, but fluidity deteriorates and static electricity occurs
Solution Approach 1:
The patent changes the physical state parameter of the nucleating agent from powdery to granular form. This parameter change fundamentally alters the flow characteristics and eliminates static electricity issues while maintaining high purity, as the granular structure provides better fluidity without requiring additional additives.
Solution Approach 2:
The patent introduces granulation as an intermediary process between the pure nucleating agent and the final product. This granulation step acts as a mediator that improves handling properties and fluidity while preserving the high purity of the original nucleating agent, avoiding the need for fluidity-enhancing additives.
2Ease of operation
If additives are added to improve fluidity, then fluidity is improved, but purity deteriorates
Solution Approach 1:
The patent extracts and removes the need for fluidity-enhancing additives by changing the physical form of the nucleating agent to granular. This extraction approach eliminates the harmful effect of additives on purity while still achieving the desired fluidity improvement through the granular structure itself.
3Stability of the object's composition
If particle size is reduced to powdery form, then dispersion is improved, but fluidity deteriorates and dust occurs
Solution Approach 1:
The patent applies granulation to create rounded granular particles with smooth surfaces. This spherical/rounded shape improves flow characteristics and reduces dust generation compared to powdery forms, while the granular structure maintains adequate dispersion uniformity in the polymer matrix.
4Ease of operation
If particle size is increased to improve fluidity, then fluidity is improved, but dispersion uniformity deteriorates
Solution Approach 1:
The patent optimizes the granular particle size to a specific range that balances fluidity and dispersion uniformity. This parameter optimization ensures that the particles are large enough to flow well and reduce dust, but small enough to disperse uniformly in the polymer, resolving the contradiction between these two requirements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method produces nucleating agents with high purity and improved fluidity, ensuring uniform dispersion and enhanced polymer performance, including transparency and reduced static electricity.
Implementation Method 1
The present invention provides a method for manufacturing particulate transparent nucleating agent, which comprises: adding water into transparent nucleating agent powder and stirring to obtain a mixture; extruding the mixture at an extrusion pressure of 0.5-7.0Mpa; and drying the extruded particles
Implementation Method 2
extruding the mixture at an extrusion pressure of 0.5-7.0Mpa and adjusting a ratio of the water content in the transparent nucleating agent powder to the extrusion pressure to 0.15-0.40
Implementation Method 3
drying the extruded particles to obtain the particulate transparent nucleating agent, wherein a bulk density of the particulate transparent nucleating agent is 0.25-0.60 g/cm³
Data Source
AI summary
Provided is a particulate nucleating agent and a method for manufacturing the same. The particulate nucleating agent has an average radial crushing strength of 0.2-25.0 N/cm. A weight content of the active ingredients in the particulate nucleating agent is no less than 90 wt %. The particulate nucleating agent is a transparent particulate nucleating agent. The particulate nucleating agent can be fed smoothly during production without the change of the chemical composition thereof, so as to realize uniform dispersion in the polymer and reduce defects such as white dots in the polymer. This breaks the traditional view of refining particles of nucleating agent to obtain a polymer having desirable properties, and avoids adding large amount of materials except the active ingredients during the granulation process of the nucleating agent.