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A preparation method of an auxiliary agent system that can be used to produce high-rigidity and high-toughness polypropylene thin-wall injection molding

A polypropylene, high-toughness technology, applied in the field of additive systems for the production of polypropylene, can solve the problems of low transparency, loss of toughness, and reduced rigidity of manufactured parts, and achieves easy control of process conditions, improved rigidity and toughness, and improved transparency. Effect

Active Publication Date: 2022-03-18
XUZHOU HAITIAN PETROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, packaging products, plastic containers, mechanical devices, and high-precision devices have gradually developed towards thin-walled or even ultra-thin-walled devices. Additives are the most commonly used, simplest and most effective method to change the rigidity of polypropylene thin-wall injection molding, but the toughness of polypropylene thin-wall injection molding is greatly lost, and there are insufficient impact resistance, low transparency, and easy to break at low temperature, etc. shortcoming
At present, some additive systems on the market can only solve a single rigidity problem. The mixed inorganic stiffener and nucleating agent are used for physical mixing. The uneven mixing affects the performance of the additive system and cannot meet the requirements of the right additive system.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The preparation method of the auxiliary system comprises the following steps:

[0025] (1) Preparation of organically modified filler stiffening agent, take 150g of nano-montmorillonite, the weight ratio of water and nano-montmorillonite is 3.7:5, add it into 1# three-necked flask, and under the condition of 300~400 rpm Stir and mix for 8-12 minutes, continue to add 2.02% of the weight of nano-montmorillonite aluminate coupling agent, mix for 15-20 minutes, then add carboxylated styrene-butadiene latex of 35.2% by weight of nano-montmorillonite, mix 45~55 min, then add 1.51% slip agent based on the weight of nano-montmorillonite, mix for 15~18 min, then heat in a water bath to 50~55°C, take out and dry for 7~12 min, and obtain organic modified Nano montmorillonite;

[0026] (2) Preparation of modified sorbitol nucleating agent, first take anthraquinone type disperse dye and put it into a grinder to grind to a particle size of less than 50 μm, take 85g of sorbitol nucle...

Embodiment 2

[0032] The preparation method of the auxiliary system comprises the following steps:

[0033] (1) Preparation of organically modified filler stiffening agent, take 150g of nano-montmorillonite, the weight ratio of water and nano-montmorillonite is 3.8:5, add it into 1# three-necked flask, and under the condition of 300~400 rpm Stir and mix for 8-12 minutes, continue to add 2.25% of the weight of nano-montmorillonite aluminate coupling agent, mix for 15-20 minutes, then add carboxylated styrene-butadiene latex of 37.8% by weight of nano-montmorillonite, mix 45~55 minutes, then add 1.72% of the weight of nano-montmorillonite slip agent, mix for 15~18 minutes, then heat in a water bath to 50~55°C, remove and dry for 7~12 minutes, and obtain organically modified Nano montmorillonite;

[0034] (2) Preparation of modified sorbitol nucleating agent, first take anthraquinone disperse dye and put it into a grinder to grind to a particle size of less than 50 μm, take 85g of sorbitol nu...

Embodiment 3

[0040] The preparation method of the auxiliary system comprises the following steps:

[0041] (1) The preparation of organically modified filler stiffening agent, take 150g of nano-montmorillonite, the weight ratio of water and nano-montmorillonite is 3.82:5, add it into 1# three-necked flask, under the condition of 300~400 rpm Stir and mix for 8-12 minutes, continue to add 2.38% aluminate coupling agent of the weight of the filler stiffener, mix for 15-20 minutes, then add carboxylated styrene-butadiene latex of 42.3% of the weight of nano-montmorillonite, and mix 45~55 min, then add 1.84% of the nano-montmorillonite weight slip agent, mix for 15~18 min, then heat in a water bath to 50~55°C, remove for 7~12 min, take out and dry to obtain organic modified Nano montmorillonite;

[0042] (2) Preparation of modified sorbitol nucleating agent, first take anthraquinone disperse dye and put it into a grinder to grind to a particle size of less than 50 μm, take 85g of sorbitol nucl...

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PUM

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Abstract

The invention discloses a preparation method of an auxiliary agent system which can be used for producing high-rigidity and high-toughness polypropylene thin-walled injection molding materials. The auxiliary agent system comprises styrene-butadiene-styrene block copolymer, styrene-propylene Nitrile copolymers, antioxidants, organically modified filler stiffeners, carboxymethylcellulose dispersants, modified sorbitol nucleating agents, elastomer tougheners, slip agents and microstructure adjustment additives, and Preparation method: Activate and modify the surface of the filler stiffener to obtain an organically modified filler stiffener, and assist the co-processing of the sorbitol nucleating agent. Each component is sequentially passed through nitrogen protection and oil bath heating in a solvent-free Under the conditions, the reactor is subjected to high-speed stirring treatment, melt mixing, extrusion and granulation to prepare the auxiliary agent system. The invention prepares an auxiliary agent system for producing high-rigidity and high-toughness polypropylene thin-wall injection molding, improves the increased rigidity and toughness of the polypropylene thin-wall injection molding, and reduces the haze of the polypropylene thin-wall injection molding.

Description

technical field [0001] The invention relates to a preparation method of an auxiliary agent system that can be used to produce high-rigidity and high-toughness polypropylene thin-wall injection molding, and belongs to the technical field of auxiliary agent systems for producing polypropylene. Background technique [0002] As one of the top five general-purpose plastics with the largest production and consumption, polypropylene has the advantages of non-toxic, harmless, low cost, and easy processing. Polypropylene special materials show broad application prospects in the fields of food packaging, medicine and hygiene, electronic appliances, daily necessities, mechanical devices, etc. Containers, as well as mechanical devices such as pick-up and palletizing, and high-precision devices such as mobile phone back covers. In recent years, packaging products, plastic containers, mechanical devices, and high-precision devices have gradually developed towards thin-walled or even ultr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L53/02C08L25/12C08L23/08C08K13/06C08K9/04C08K3/34C08K5/1575C08L23/12
CPCC08L53/02C08L23/12C08L2205/035C08L2201/08C08L2205/24C08L2201/10C08K2201/011C08L25/12C08L23/0815C08K13/06C08K9/04C08K9/08C08K3/346C08K5/1575C08K3/34
Inventor 谢飞
Owner XUZHOU HAITIAN PETROCHEM