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Branched polymer as well as preparation method and application thereof

A technology of branched polymers and compounds, which is applied in the field of branched polymers and their preparation, can solve problems such as poor interface performance and fluidity, achieve improved adhesion and compatibility, simple preparation methods, and easy implementation Effect

Pending Publication Date: 2022-01-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the technical problems to be solved by the present invention is the problem of poor interfacial performance and fluidity of the thermoplastic resin composite system reinforced by inorganic materials (such as glass fiber) existing in the prior art. A branched polymer is provided, which contains the branched polymer The resin composition of the material can significantly improve the interface strength of the organic / inorganic composite material and significantly improve its interfacial compatibility, and can be used in communications, electronics, automobiles, construction, medical, aerospace and other fields

Method used

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  • Branched polymer as well as preparation method and application thereof
  • Branched polymer as well as preparation method and application thereof
  • Branched polymer as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] (1) Preparation of branched polymer:

[0085] At room temperature and under the protection of nitrogen, add 0.1 molar fraction (15.6 volume fraction) of ethylene glycol diglycidyl ether and 100 volume fractions of p-xylene to the reactor, under the conditions of reflux condensation and stirring rate of 100rpm, Heating to 105°C, adding 0.08 mole fraction of trimesic acid monomer and 0.0035 mole fraction of 1-methylimidazole, reacting for 15 hours, ending the reaction, cooling to room temperature, ethanol precipitation, and drying treatment to obtain aromatic poly Ester branched polymer M.

[0086] The number average molecular weight of M detected by GPC is 8500g / mol, the weight average molecular weight is 26100g / mol, and the molecular weight distribution is 3.07; it can be seen from the GPC outflow curve: compared with the same molecular weight level, its peak is later, and the outflow curve has a shoulder peak phenomenon, Different from the unimodal results of linear m...

Embodiment 2

[0090] (1) The preparation of branched polymer is the same as in Example 1.

[0091] (2) Preparation of resin composition containing aromatic polyester branched polymer M:

[0092] Disperse 0.3 parts of aluminate coupling agent in 5 parts of white oil, spray on the surface of 30 parts of chopped glass fiber (3mm in length, 11μm in diameter), stir and mix well; mix the treated chopped glass fiber with 65 parts Dry-treated polyamide 66 (265°C, 2.16kg, melt index 20.5g / 10min), 5 parts of aromatic polyester branched polymer M, 0.8 parts of tetrakis[β-(3,5-di-tert-butyl-4- Hydroxyphenyl) propionate] pentaerythritol ester, fully stir again and mix evenly; import the mixed material into the feed port of LABTECH co-rotating twin-screw extruder (screw diameter 16mm, aspect ratio 40), at 270 ℃, 250rpm process Under the conditions, the resin composition ii containing the aromatic polyester branched polymer M is obtained through melt meshing, extrusion, cooling and granulation. Its perf...

Embodiment 3

[0094] (1) The preparation of branched polymer is the same as in Example 1.

[0095] (2) Preparation of resin composition containing aromatic polyester branched polymer M:

[0096] Disperse 0.4 parts of aluminate coupling agent in 5 parts of white oil, spray on the surface of 40 parts of chopped glass fiber (length 3mm, diameter 11μm), stir and mix well; mix the treated chopped glass fiber with 55 parts Dry-treated polyamide 66 (265°C, 2.16kg, melt index 20.5g / 10min), 5 parts of aromatic polyester branched polymer M, 0.8 parts of tetrakis[β-(3,5-di-tert-butyl-4- Hydroxyphenyl) propionate] pentaerythritol ester, fully stir again and mix evenly; import the mixed material into the feed port of LABTECH co-rotating twin-screw extruder (screw diameter 16mm, aspect ratio 40), at 270 ℃, 250rpm process Resin composition iii containing aromatic polyester branched polymer M is obtained through melt meshing, extrusion, cooling and granulation under the same conditions. Its performance i...

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Abstract

The invention discloses a branched polymer and a preparation method and application thereof. The molecular structure of the branched polymer contains a plurality of units as shown in a formula (I) which is described in the specification. In the formula (I), X is selected from O or COO. Preferably, the branched polymer is obtained by a reaction of raw materials including multifunctional epoxy compounds and polybasic acid compounds, wherein f(multifunctional epoxy compound) is more than or equal to 2, f(polybasic acid compound) is more than or equal to 2, and f(multifunctional epoxy compound) and f(polybasic acid compound) are not equal to 2 at the same time. The branched polymer is introduced into a thermoplastic resin-inorganic additive compounded system; compared with commercially available products, the branched polymer can endowed organic / inorganic compounds with excellent processing fluidity, toughness, modulus and other properties; two-phase interface bonding force and compatibility are remarkably improved; and meanwhile, a prepared resin composition has good low dielectric property, can be applied to the fields of 5G communication and the like and produces better technical effect.

Description

technical field [0001] The invention belongs to the field of polymer materials, in particular to a branched polymer and its preparation method and application. Background technique [0002] Thermoplastic resins such as polyethylene, polypropylene, polyvinyl chloride, polystyrene, ABS, polyoxymethylene, polyester, polyamide, polyacrylate, polyphenylene ether, etc., because of their good recyclability, recyclability, and The characteristics of repeated use and no pollution to the environment have become a class of widely used thermoplastic materials in today's polymer materials. However, these thermoplastic resin materials cannot meet the needs of special users due to certain performance defects. [0003] In order to meet the requirements of different fields on the mechanical properties and thermal properties of composite materials, it is usually necessary to modify thermoplastic resins (CN110499010A, CN108164984A, CN110256829A, WO0320827). When adopting inorganic filler mat...

Claims

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Application Information

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IPC IPC(8): C08G63/668C08L77/06C08L67/00C08K9/04C08K7/14C08K5/134
CPCC08G63/668C08L77/06C08L2205/03C08L67/00C08K9/04C08K7/14C08K5/1345C08L91/06Y02E60/10
Inventor 于志省李应成王洪学
Owner CHINA PETROLEUM & CHEM CORP
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