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Thermoplastic elastomer material, preparation method thereof and coated biodegradable resin product

A thermoplastic elastomer and biodegradable resin technology, which is applied in the field of coated biodegradable resin products, thermoplastic elastomer materials and their preparation, can solve the problems of large differences in solubility parameters and incompatibility, and achieves low hardness and good compatibility. Beneficial for processing and good adhesion

Pending Publication Date: 2022-04-15
盛嘉伦橡塑(河源)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the solubility parameters of biodegradable resin materials such as polylactic acid (PLA), polyadipate / butylene terephthalate (PBAT) are quite different from those of traditional thermoplastic elastomer materials, and it is difficult to compare the two. Tolerance, which makes it difficult for thermoplastic elastomers to adhere to the surface of biodegradable resin materials such as polylactic acid (PLA) and polyadipate / butylene terephthalate (PBAT)

Method used

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  • Thermoplastic elastomer material, preparation method thereof and coated biodegradable resin product
  • Thermoplastic elastomer material, preparation method thereof and coated biodegradable resin product
  • Thermoplastic elastomer material, preparation method thereof and coated biodegradable resin product

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preparation example Construction

[0062] An embodiment of the present invention also provides a method for preparing a thermoplastic elastomer material, including the following step S10.

[0063] Step S10, mixing and extruding the above-mentioned raw materials of the thermoplastic elastomer material to obtain a thermoplastic elastomer material.

[0064] In the preparation method of the above-mentioned thermoplastic elastomer, specific raw materials are used, and the components of a specific mass ratio cooperate with each other and act synergistically, and the thermoplastic elastomer with excellent adhesion to the biodegradable resin can be obtained without the step of oil filling. Body material, and thermoplastic elastomer material with high elasticity and low hardness, the process is simple and the requirements for equipment are low.

[0065] In some of the embodiments, the mixing step includes steps S11-S12.

[0066] Step S11, mixing the hydrogenated styrene-β-farnesene block copolymer, inorganic fillers an...

Embodiment 1

[0087] (1) 70 parts of hydrogenated styrene-β-farnesene block copolymer SF904, 0.15 parts of antioxidant (Basf's 168 and 1076 are compounded at a mass ratio of 2:1), 0.2 parts of ultraviolet absorbing The agent (UV-770) and 30 parts of calcium carbonate were put into a horizontal mixer, and stirred for 5 minutes at a normal temperature of 25° C. and a stirring rate of 30 r / min to obtain the first mixture.

[0088] The first mixture was extruded and pelletized in a twin-screw extruder with a rotational speed of 300 r / min, an aspect ratio of 24:1, and a temperature of 220° C. to obtain a thermoplastic elastomer material.

[0089] (2) Test the Shore hardness Shore A, melt index, specific gravity, tensile strength, and elongation at break of the thermoplastic elastomer material prepared, wherein the test reference standard ASTM D-2240 of the Shore hardness Shore A, melt Index test reference standard ASTM D1238, specific gravity test reference standard ASTM D-792, tensile strength ...

Embodiment 2

[0092] (1) 70 parts of hydrogenated styrene-β-farnesene block copolymer SF901, 0.3 parts of antioxidant (Basf's 168 and 1076 are compounded at a mass ratio of 2:1), 0.1 part of ultraviolet absorbing The agent (UV-P) and 20 parts of filler carbon black were put into a horizontal mixer, and stirred for 5 minutes at room temperature of 25° C. and a stirring rate of 30 r / min to obtain the first mixture.

[0093] 10 parts of PBAT resin ECO-A20 were dried at 85°C for 4 hours, then added to the first mixture, and stirred at a stirring rate of 30r / min for 5 minutes until uniformly mixed to obtain a premix.

[0094] Put the premix in a twin-screw extruder with a rotation speed of 150r / min, an aspect ratio of 48:1, and a temperature of 240°C for extrusion and pelletization to obtain a thermoplastic elastomer material.

[0095] Step (2) is identical with embodiment 1 step (2).

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Abstract

The invention discloses a thermoplastic elastomer material, a preparation method thereof and a coated biodegradable resin product. The thermoplastic elastomer material is prepared from the following raw materials in parts by mass: 50 to 70 parts of hydrogenated styrene-beta-farnesene block copolymer; 0 to 40 parts of biodegradable resin; 20 to 30 parts of an inorganic filler; the biodegradable resin is selected from at least one of polylactic acid and poly (butylene adipate-co-terephthalate). The thermoplastic elastomer material which is excellent in cohesiveness with biodegradable resin is formed through mutual cooperation and synergistic effect of all the components in a specific mass ratio, and the thermoplastic elastomer material is low in hardness and excellent in elasticity at the same time.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a thermoplastic elastomer material, a preparation method thereof, and a coated biodegradable resin product. Background technique [0002] With the development of human society and economy, the lack of energy has led to a rapid increase in energy prices. The environmental problems caused by the discarded plastic products have become a hot spot of concern at present. Biodegradable resin materials have become an important research direction at this stage. However, commonly used biodegradable resin materials such as polylactic acid (PLA) and polybutylene adipate / terephthalate (PBAT) have relatively high hardness, generally greater than 70A, and further adding plasticizers to toughen them will This leads to oily products, and some products require a softer feel, such as buttons or handles, etc., which greatly limits the application range of biodegradable resin ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/00C08L67/02C08L67/04C08K3/36C08K3/04C08K3/26B32B27/36B32B27/30B32B27/08B32B27/18
Inventor 曾龙李萍邱建
Owner 盛嘉伦橡塑(河源)有限公司