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Application of carboxylic acid metal salt of tetrahydrophthalic anhydride as nucleating agent for polypropylene beta crystal form

A technology of metal carboxylate and tetrahydrophthalic anhydride is applied in the field of nucleating agents, which can solve the problems of complex components and complex preparation methods, and achieve the effects of good dispersion, wide application conditions and improved impact strength.

Active Publication Date: 2013-01-16
GCH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] CN101265342 discloses a composite β crystal nucleating agent for polypropylene, but it is composed of one or more β crystal nucleating agents and one or more synergists, and the composition is complex
[0011] CN101157771 discloses a loaded β-crystal nucleating agent and a preparation method thereof. The loaded β-crystal nucleating agent is composed of nano-calcium carbonate and aliphatic dicarboxylic acid, which is composed of multiple components, and the preparation method is complicated

Method used

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  • Application of carboxylic acid metal salt of tetrahydrophthalic anhydride as nucleating agent for polypropylene beta crystal form
  • Application of carboxylic acid metal salt of tetrahydrophthalic anhydride as nucleating agent for polypropylene beta crystal form
  • Application of carboxylic acid metal salt of tetrahydrophthalic anhydride as nucleating agent for polypropylene beta crystal form

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Embodiment Construction

[0029] The present invention can be further illustrated by the following examples, but what is provided here are only the preferred embodiments of the present invention, and the scope of the present invention is not limited by this.

[0030] The polypropylene PP used in the following experiment is F401 produced by Sinopec Yangzi Petrochemical Co., Ltd.

[0031] Preparation of sample 1#: Add the nucleating agent of calcium tetrahydrophthalate with a mass of 0.05%, 0.10%, 0.20% and 0.30% of the polypropylene mass to PP (F401) pellets (PP mass is 1000g as Benchmark), after mixing in a high-speed mixer for 5 minutes, twin-screw kneading and extrusion granulation, and then injection molding to make polypropylene PP (F401) standard sample strips. The extrusion temperature is 190-210℃, and the temperature of each section of the injection molding machine is 220-230℃.

[0032] Preparation of sample 2#: Add the nucleating agent of zinc tetrahydrophthalate with a mass of 0.05%, 0.10%, 0.20% an...

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Abstract

The invention provides an application of a carboxylic acid metal salt of tetrahydrophthalic anhydride as a nucleating agent for a polypropylene beta crystal form. By adopting the carboxylic acid metal salt of tetrahydrophthalic anhydride as the nucleating agent, the generation of beta crystal form polypropylene can be induced efficiently; as tested by differential scanning calorimetry (DSC), the content of a beta crystal form is up to 86-97.7 percent; after nucleation modification by using the carboxylic acid metal salt of the tetrahydrophthalic anhydride, the punching strength of polypropylene is increased by 5-8 times, the heat deflection temperature is increased greatly, and high mechanical property is achieved; and moreover, the carboxylic acid metal salt has the advantages of chemical stability, high dispersity, coloring resistance, capability of improving the working quality of a product and wide application range in the field of materials special for polypropylene.

Description

Technical field [0001] The invention relates to a nucleating agent, in particular to a polypropylene β crystal nucleating agent. Background technique [0002] Since the advent of polypropylene, its excellent thermal and mechanical properties have been widely used in many fields, such as injection molding, film, and fiber production. This versatility and economy make polypropylene surpass polyvinyl chloride and polystyrene. Become the second largest synthetic resin after polyethylene. Especially with the commercialization and application of various crystalline polypropylenes, polypropylene has a very broad prospect in engineering plastics and functional materials. [0003] Polypropylene has many crystal forms, namely α, β, γ, δ and pseudo-hexagonal crystals. The crystal form is an important factor in determining its mechanical, thermal and optical properties. Among them, the α crystal form is the most common, which is thermodynamically stable; the β crystal form is thermodynamical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/10C08K5/098C08L23/14C08L53/00C08L23/12
Inventor 赵文林
Owner GCH TECH
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