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Application of fatty acid ester end group hyperbranched polyester as high polymer material viscosity reducing and toughening agent

A technology of hyperbranched polyester and polymer materials, applied in the field of fatty acid ester terminal hyperbranched polyester type viscosity reducing and toughening agent

Inactive Publication Date: 2013-08-14
东莞市鸿英新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many studies on the modification of the existing permanent Boltorn type hyperbranched polyesters, but there is no involvement in the viscosity reduction and toughening of thermosetting polyurethanes, thermoplastic polyolefins and thermoplastic polyesters.

Method used

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  • Application of fatty acid ester end group hyperbranched polyester as high polymer material viscosity reducing and toughening agent
  • Application of fatty acid ester end group hyperbranched polyester as high polymer material viscosity reducing and toughening agent
  • Application of fatty acid ester end group hyperbranched polyester as high polymer material viscosity reducing and toughening agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Add the fourth-generation Boltorn type hyperbranched polyester and excess n-octadecanoic acid into a three-necked flask, then add 0.3wt% p-toluenesulfonic acid as a catalyst, under the protection of nitrogen, mechanically stir, react at 140°C for 3 hours, and pump Vacuum to remove the water produced by the reaction. The product is a light yellow waxy solid. After being dissolved in chloroform and anhydrous ethanol, precipitation, drying and purification, the fourth generation n-octadecanoate-terminated hyperbranched polyester is obtained, and its viscosity is 483.35mPa·s.

[0043] The above-mentioned 4th generation n-octadecanoate-terminated hyperbranched polyester and HTPB type polyurethane prepolymer (hydroxyl-terminated polybutadiene HTPB and isophorone diisocyanate IPDI) are weighed according to the formula consumption (wherein adjusting positive The percentages by weight of octadecanoate-terminated hyperbranched polyester to the total weight of n-octadecanoate-termi...

Embodiment 2

[0047] The synthetic method of the fourth generation n-octadecanoic acid terminal hyperbranched polyester is the same as in Example 1.

[0048] Weigh the fourth-generation octadecanoate-end hyperbranched polyester and high-density polyethylene according to a certain composition ratio (wherein the fourth-generation octadecanoate-end hyperbranched polyester accounts for the proportion of n-stearate The percentages by weight of the end-group hyperbranched polyester and the total weight of high-density polyethylene are respectively 4%, 8%, 12%, 16% and 20%), which are mixed by a twin-roller mixer, and then granulated. The mixed masterbatch was tested for viscosity (Table 2) and mechanical properties ( image 3 , Figure 4 ). Viscosity test results show that the initial viscosity of high-density polyethylene is 5486.46mPa·s, and its viscosity decreases to 3320.68mPa·s after adding 20% ​​of the fourth-generation octadecanoate-terminated hyperbranched polyester. The test results o...

Embodiment 3

[0053] The synthetic method of the 4th generation n-octadecanoic acid end group hyperbranched polyester is the same with embodiment 1.

[0054] The fourth generation n-octadecanoate end group hyperbranched polyester and polybutylene phthalate are weighed according to a certain composition ratio (wherein the fourth generation n-octadecanoate end group hyperbranched polyester The percentage by weight of the total weight of octadecanoate-terminated hyperbranched polyester and polybutylene phthalate is 4%, 8%, 12%, 16% and 20%), using a two-roller mixer Knead and then granulate. The mixed masterbatch was tested for viscosity (Table 3) and mechanical properties ( Figure 5 , Figure 6 ). Viscosity test results show that the initial viscosity of polybutylene phthalate is 6836.44mPa·s, and its viscosity drops to 4032.35mPa·s after adding 20% ​​of the fourth-generation octadecanoate-terminated hyperbranched polyester. The test results of mechanical properties show that the maximum...

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Abstract

The invention discloses application of fatty acid ester end group hyperbranched polyester as a high polymer material viscosity reducing and toughening agent. According to the application disclosed by the invention, the fatty acid ester end group hyperbranched polyester is added into a thermosetting polyurethane prepolymer, an epoxy resin prepolymer, thermoplastic polyolefin or polyester for blending, and the viscosity and strength of the blending material are adjusted by adjusting the content of the fatty acid ester end group hyperbranched polyester. Viscosity tests prove that the viscosity of the blending material is reduced along with the increase of the content of the added fatty acid ester end group hyperbranched polyester at a processing temperature, and simultaneously, the mechanical property of the blending material is greatly improved.

Description

technical field [0001] The invention relates to a fatty acid ester terminal hyperbranched polyester type viscosity-reducing and toughening agent, which can be used to reduce the viscosity of thermosetting polyurethane prepolymers and thermosetting epoxy resin prepolymers, and improve the strength and toughness of polyurethane after curing. It can also be used to reduce the viscosity of thermoplastic polyolefin and polyester materials, and improve the strength and toughness of materials. Background technique [0002] Hyperbranched polymers are a young and rapidly developing field in polymer science. Since Kim et al. reported hyperbranched polybenzoic acid and proposed the concept of hyperbranched polymers in 1988, hyperbranched polymers have rapidly become a research field in the field of polymer science. hotspots. Hyperbranched polymers have the characteristics of three-dimensional spherical structure of dendrimers, highly branched, a large number of active end groups and l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/00C08L75/04C08L75/06C08L75/08C08L63/00C08L23/00C08L77/00C08L23/06C08L67/02C08L23/12C08L33/04C08L69/00C08L77/02C08G63/91
Inventor 宋雪晶杨仕晓
Owner 东莞市鸿英新材料科技有限公司
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