Homo-polypropylene beta nucleating agent and preparation method thereof

A technology of homopolypropylene and crystal nucleating agent, which is applied in the field of polypropylene, can solve the problems of affecting production efficiency, thermodynamic instability, inability to apply and popularize, etc., and achieve the effect of improving toughness and simple preparation

Inactive Publication Date: 2015-04-29
方文川 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Blank polypropylene resin, when processed into products, mainly forms the most stable large-crystal α-crystal form; β-crystal form is a thermodynamically unstable and kinetically quasi-stable crystal form, which can only be obtained in special Therefore, many β-crystal nucleating agents inevitably need to be processed under specific molding process conditions, such as controlling the temperature drop of the product after injection molding or extrusion to not exceed 10°C per minute, so it will seriously affect production efficiency in actual production applications. Unable to be applied and promoted in industrial production

Method used

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  • Homo-polypropylene beta nucleating agent and preparation method thereof
  • Homo-polypropylene beta nucleating agent and preparation method thereof

Examples

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Effect test

Embodiment 1

[0027] The homopolypropylene β-crystal nucleating agent described in the present invention, calculated according to mass percentage, includes the following components:

[0028] 0.8% high-efficiency β-crystal nucleating agent, 3% acid absorbing agent, 2.5% attachment agent, 43.7% rigid particle, and 50% synergist.

[0029] Among them, the high-efficiency β-crystal nucleating agent is calcium pimelate and zinc salt, the acid absorbing agent is calcium salt of fatty acid, the attachment agent is fatty acid, the rigid particle is silicon dioxide, and the synergist is calcium carbonate. At the same time, the fatty acid~~salt can also act as a dispersant and a stabilizer, the fatty acid can also act as a dispersant, and the silicon dioxide can act as a β crystal nucleating agent.

[0030] The preparation method of the homopolypropylene β-crystal form nucleating agent described in the present invention is to put the raw materials in the above ratio into a high-speed disperser and mix...

Embodiment 2

[0033] The only difference between this example and Example 1 is that the ratio of each component in the homopolypropylene β crystal nucleating agent has changed, specifically:

[0034] 2% high-efficiency β-crystal nucleating agent, 2% acid absorbing agent, 1.5% attachment agent, 28.5% rigid particles, and 66% synergist.

[0035] Among them, the high-efficiency β-crystal nucleating agent is pimelic acid calcium salt, the acid absorbing agent is fatty acid zinc salt, the attachment agent is fatty acid, the rigid particle is silicon dioxide, and the synergist is calcium carbonate. At the same time, the fatty acid zinc salt can also act as a dispersant and a stabilizer, the fatty acid can also act as a dispersant, and silicon dioxide can act as a β crystal nucleating agent.

Embodiment 3

[0037] The only difference between this example and Example 1 is that the ratio of each component in the homopolypropylene β crystal nucleating agent has changed, specifically:

[0038] 0.1% high-efficiency β-crystal nucleating agent, 5% acid absorbing agent, 1% attachment agent, 75% rigid particles, and 18.9% synergist.

[0039] Among them, the high-efficiency β-crystal nucleating agent is pimelic acid zinc salt, the acid absorbing agent is fatty acid zinc salt, the attachment agent is fatty acid, the rigid particle is silicon dioxide, and the synergist is calcium carbonate. At the same time, the fatty acid zinc salt can also act as a dispersant and a stabilizer, the fatty acid can also act as a dispersant, and silicon dioxide can act as a β crystal nucleating agent.

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Abstract

The embodiments of the invention disclose a homo-polypropylene beta nucleating agent, comprising the following components in percentage by mass: 0.1-10% of an efficient beta nucleating agent, 1-5% of an acid absorbent, 1-5% of an excipient, 0-75% of rigid particles and 30-90% of a synergist, preferably, 0.8% of an efficient beta nucleating agent, 3% of an acid absorbent, 2.5% of an excipient, 43.7% of rigid particles and 50% of a synergist. The efficient beta nucleating agent is a pimelic acid metal salt; and the acid absorbent is a fatty acid metal salt. The pimelic acid metal salt comprises zinc pimelate and calcium pimelate. The fatty acid metal salt comprises a fatty acid zinc salt and a fatty acid calcium salt. The embodiments of the invention also disclose a preparation method of the homo-polypropylene beta nucleating agent. The homo-polypropylene beta nucleating agent has the characteristics of high nucleating efficiency and low cost, and greatly improves the toughness of homo-polypropylene when keeping the rigidity and break elongation of the homo-polypropylene.

Description

technical field [0001] The invention relates to the field of polypropylene, in particular to a beta crystal nucleating agent for homopolypropylene and a preparation method thereof. Background technique [0002] Polypropylene is a general-purpose thermoplastic, which can be divided into homopolypropylene and copolypropylene in terms of composition. Compared with copolypropylene, homopolypropylene has higher rigidity and heat resistance, so homopolypropylene It is the most commonly used and used product in polypropylene resin. However, homopolypropylene has the disadvantage of being brittle and easy to break. It needs to be modified to achieve toughness and maintain rigidity properly before it can be applied in a wider range. The traditional toughening modification of polypropylene plastics is achieved by blending with elastomers. However, the addition of elastomers will greatly reduce the rigidity and heat resistance temperature of homopolypropylene; in order to improve rigi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K13/02C08K3/26C08K3/36C08K5/098C08K5/09
CPCC08K13/02C08J3/226C08J2323/12C08K3/26C08K3/36C08K5/09C08K5/098C08K2003/265C08K2201/014C08L2205/242C08L23/12
Inventor 方文川
Owner 方文川
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