Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Polypropylene macromolecular stiffening nucleating agent as well as preparation method and application thereof

A technology for polypropylene and macromolecules, which is applied in the field of polypropylene macromolecular stiffening and nucleating agents and its preparation. It can solve the problems of poor compatibility and dispersibility, and accelerate the formation of α-crystal form, and achieve good dispersibility and accelerated crystallization. rate, effect of reducing spherulite size

Active Publication Date: 2019-11-22
杭州聚丰新材料有限公司
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The object of the present invention is to overcome the deficiency of existing nucleating agent and polypropylene compatibility, poor dispersibility, provide a kind of polypropylene macromolecule stiffening nucleating agent and its preparation method and application, this nucleating agent and polypropylene Excellent compatibility, can significantly accelerate the formation of α-crystal form and improve the mechanical properties of polypropylene products

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polypropylene macromolecular stiffening nucleating agent as well as preparation method and application thereof
  • Polypropylene macromolecular stiffening nucleating agent as well as preparation method and application thereof
  • Polypropylene macromolecular stiffening nucleating agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Mix 0.2 parts of dicumyl peroxide, 20 parts of 4-vinylbiphenyl, and 0.1 part of sodium phosphate evenly, and melt and mix them together with 100 parts of polypropylene on an internal mixer at 190°C for 10 minutes. The rotation speed of the internal mixer is 80r / min, after cooling, a polypropylene macromolecular stiffening nucleating agent is obtained, which is denoted as A1.

[0037] After uniformly mixing 0.1 part of A1 and 100 parts of polypropylene, it was fed into an extruder at 190°C to melt, extrude and granulate to obtain stiffened polypropylene, which was designated as B1.

[0038] Infrared test method: A1 is first extracted with acetone, unreacted 4-vinyl biphenyl and blended sodium phosphate are extracted and removed, and after drying, infrared test is carried out to obtain figure 1 Infrared spectrum of polypropylene grafted with 4-vinylbiphenyl shown in .

[0039] Grafting rate calculation method: After blending different proportions of polypropylene and 4-...

Embodiment 2

[0041] Mix 0.2 parts of dicumyl peroxide, 10 parts of 4-vinyl biphenyl, and 0.1 parts of sodium phosphate evenly, and melt and mix them together with 100 parts of polypropylene on an internal mixer at 190°C for 10 minutes. The rotation speed of the internal mixer is 80r / min, after cooling, a polypropylene macromolecular stiffening nucleating agent is obtained, which is denoted as A2.

[0042] After mixing 0.03 parts of A2 and 100 parts of polypropylene evenly, put them into an extruder at 190°C to melt, extrude and granulate to obtain stiffened polypropylene, which is designated as B2.

Embodiment 3

[0044] After mixing 0.1 part of A2 and 100 parts of polypropylene evenly, they were fed into an extruder at 190°C to melt, extrude and granulate to obtain modified polypropylene, which was designated as B3.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
melt flow indexaaaaaaaaaa
degree of graftingaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of high polymer materials, and discloses a polypropylene macromolecular stiffening nucleating agent which comprises phosphate and a polypropylene grafted vinyl biphenyl derivative. A preparation method of the polypropylene macromolecular stiffening nucleating agent comprises the following steps: mixing 100 parts by mass of polypropylene, 0.5-30 parts by mass of the biphenyl derivative, 0.01-0.2 part by mass of the phosphate and 0.05-0.5 part by mass of an initiator; subjecting the mixture to melt mixing in blending equipment at the temperature of 160-220 DEGC to prepare the stiffening nucleating agent. The stiffening nucleating agent has more outstanding advantages in compatibility and dispersity when compared with polypropylene; the blended phosphate and the side branch chain of the vinylbiphenyl derivative in the structure are used as nucleation sites of polypropylene crystallization; the crystallization nucleation density is increased, the crystallization rate is increased, the spherocrystal size is reduced, and the crystallization temperature of polypropylene is increased. Compared with single-benzene-ring acrylate macromolecular nucleating agents, the stiffening nucleating agent has the advantage that the mechanical property of polypropylene can be more remarkably improved.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a polypropylene macromolecule rigidifying nucleating agent and a preparation method and application thereof. Background technique [0002] Polypropylene (PP) is widely used due to its high melting point, good toughness, corrosion resistance, and strong static load capacity. Coating and foaming applications. Polypropylene is a crystalline polymer, and its crystallization behavior, crystal morphology and spherulite size all directly affect the final properties of the product. [0003] Polypropylene has five crystal forms of α, β, γ, δ and pseudo-hexagonal state. The α crystal form is the most common. Under normal processing conditions, the homogeneous structure of the melt naturally cooled is mainly the α crystal form. Polypropylene with α-crystal form has excellent properties such as rigidity enhancement, heat distortion temperature increase, creep resistance, turbidity reductio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/06C08K3/32C08F255/02C08F212/32
CPCC08F255/02C08K3/32C08K2003/324C08L51/06C08F212/32
Inventor 王笛张才亮宋顺刚洪东海
Owner 杭州聚丰新材料有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com