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Polyhedral oligomeric silsesquioxane nucleating agent as well as preparation method and application thereof

A technology of silsesquioxane and nucleating agent, which is applied in the field of cage-type silsesquioxane nucleating agent and its preparation, can solve the problems of anti-aging performance, weather resistance, light and heat resistance, product gloss and transparency Good, long molding processing cycle, slow crystallization speed and other problems, to achieve the effect of improving nucleation efficiency and its processing performance, nucleation efficiency, and crystallization performance

Inactive Publication Date: 2021-01-01
EAST CHINA UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polypropylene itself also has some disadvantages, such as slow crystallization speed leading to long molding processing cycle, anti-aging performance, weather resistance, light and heat resistance, product gloss and transparency, etc., which make its application in a wider range of fields limited. limits

Method used

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  • Polyhedral oligomeric silsesquioxane nucleating agent as well as preparation method and application thereof
  • Polyhedral oligomeric silsesquioxane nucleating agent as well as preparation method and application thereof
  • Polyhedral oligomeric silsesquioxane nucleating agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A preparation method of cage type silsesquioxane nucleating agent comprises the following steps:

[0040] Cage silsesquioxane (9.72 g, 0.01 mol) of the structure shown in formula 2 (the structure is shown below, purchased from American hybrid plastics company, the product number is CA0295) and calcium oxide (0.2 g, 0.02 mol) were molar Disperse in 100mL tetrahydrofuran solution at a ratio of 1:2, and heat to reflux for 8 hours at a temperature of 70°C. The mixture of the two was dried at 100° C. for 24 hours, and passed through a 200-mesh sieve to obtain the cage-type silsesquioxane nucleating agent.

[0041] R 1-7 For cyclohexyl, R 8 for

[0042] A kind of preparation method of modified polypropylene comprises the following steps:

[0043]0.1 parts by weight of the cage-type silsesquioxane nucleating agent, 0.1 parts by weight of antioxidant 1010, 0.1 part by weight of antioxidant 168, and 99.7 parts by weight of homopolypropylene were melt-mixed and extruded on ...

Embodiment 2

[0045] A preparation method of cage type silsesquioxane nucleating agent comprises the following steps:

[0046] Massage cage-type silsesquioxane (9.72g, 0.01mol) with the structure shown in formula 2 (the structure is shown below, purchased from American hybrid plastics company, product number is CA0296) and zinc hydroxide (1.98g, 0.02mol) Disperse in 100mL acetone solution at a molar ratio of 1:2, and heat to reflux for 8 hours at a temperature of 70°C. The mixture of the two was dried at 100° C. for 24 hours, and passed through a 400-mesh sieve to obtain the cage-type silsesquioxane-based nucleating agent.

[0047] Among them, R 1-7 Both are isobutyl, R8 is

[0048] A kind of preparation method of modified polypropylene comprises the following steps:

[0049] 0.2 parts by weight of the cage-type silsesquioxane nucleating agent, 0.1 parts by weight of antioxidant 1010, 0.1 part by weight of antioxidant 168, and 99.6 parts by weight of homopolypropylene were melt-mixed a...

Embodiment 3

[0051] A preparation method of cage type silsesquioxane nucleating agent comprises the following steps:

[0052] Cage silsesquioxane with structure shown in Formula 2 (structure shown below, purchased from American hybrid plastics company, article number is CA0298) (16.57g, 0.01mol) and sodium hydroxide (3.2g, 0.08mol) were massaged Disperse in 100mL tetrahydrofuran solution at a molar ratio of 1:8, and heat to reflux for 8 hours at a temperature of 70°C. The mixture of the two was dried at 100° C. for 24 hours, and passed through a 200-mesh sieve to obtain the cage-type silsesquioxane nucleating agent.

[0053] Among them, R 1-8 both

[0054] A kind of preparation method of modified polypropylene comprises the following steps:

[0055] 0.2 parts by weight of the cage-type silsesquioxane nucleating agent, 0.1 parts by weight of antioxidant 1010, 0.1 part by weight of antioxidant 168, and 99.6 parts by weight of homopolypropylene were melt-mixed and extruded on a twin-scre...

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Abstract

The invention discloses a polyhedral oligomeric silsesquioxane nucleating agent which is prepared from polyhedral oligomeric silsesquioxane and metal oxide or hydroxide in a molar ratio of 1: (1-12),wherein the structure of the polyhedral oligomeric silsesquioxane is selected from one or more of the following structures: R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11 and R12 are respectively and independently selected from at least one of H, C118 alkyl, phenyl, vinyl, (CH2) nNH2, (CH2) nCOOH, cyclohexyl, isobutyl and tert-butyl, and n is an integer of 018. The modified polypropylene disclosed by the invention is prepared from the polyhedral oligomeric silsesquioxane nucleating agent, so that the crystallization temperature and the crystallization rate of the polypropylene are greatly improved, and the nucleating efficiency and the processability of the polypropylene are improved.

Description

technical field [0001] The invention belongs to the technical field of polymer material modification, and in particular relates to a cage-type silsesquioxane nucleating agent and its preparation method and application. Background technique [0002] Polypropylene (PP) is a common thermoplastic resin widely used in consumer packaging, automotive parts, and textiles due to its excellent properties, ease of processing, and relatively low cost. However, polypropylene itself also has some disadvantages, such as slow crystallization speed leading to long molding processing cycle, anti-aging performance, weather resistance, light and heat resistance, product gloss and transparency, etc., which make its application in a wider range of fields limited. limits. In order to improve the performance of polypropylene and further expand the application of polypropylene, it needs to be modified. Among various modification methods, nucleating agent modification has the advantages of convenie...

Claims

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Application Information

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IPC IPC(8): C08L83/04C08K3/22C08L23/12C08K13/02C08K5/134C08K5/526
CPCC08L83/04C08K3/22C08L23/12C08L2205/24C08K2003/2206C08K2003/2296C08K13/02C08K5/1345C08K5/526
Inventor 辛忠张娴辛善辛玉成
Owner EAST CHINA UNIV OF SCI & TECH
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