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Compatible blend, its preparation and use

A blend and compatibility technology, applied in the field of compatible blends and their preparation, can solve the problems of low cost and high price of thermoplastic polyurethane, and achieve the goals of low pollution, good wet skid resistance and reduced TPU cost Effect

Inactive Publication Date: 2005-12-21
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of high price of the above-mentioned thermoplastic polyurethane, and to provide a compatible blend with the same performance as thermoplastic polyurethane and low cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1.1 Preparation of compatibilizer by grafting reaction

[0017] 1.1.1 Maleic anhydride grafted POE

[0018] In a 2-liter stirred vessel equipped with a reflux condenser, a nitrogen inlet tube, an airtight stirrer and a dropping funnel heated by an oil bath, 50 g of ethylene-octyl Polyethylene copolymer (POE) (MFI=13) was dissolved in 12500 ml of xylene, and then 60 g of maleic anhydride (MAA) was added. To the above solution was added dropwise 40 g of benzoyl peroxide dissolved in 100 ml of xylene at 130° C. over 60 minutes. The solution was stirred for a further 60 minutes and, after cooling to 80° C., 2.5 liters of acetone were added. The graft copolymer which precipitated out was filtered off with suction, washed in 2.5 liters of acetone, filtered off again with suction and dried in vacuo at 80° C. for 8 hours. The grafting ratio of MAA was determined by infrared spectroscopy.

[0019] 1.1.2 Glycidyl methacrylate grafted POE

[0020] Using 60 g of glycidyl metha...

Embodiment 2～16

[0051] In a Brabender Plastieorder with a kneading chamber, a mixture of 20 g (50% by weight) of TPU1, 18 g (45% by weight) of POE and 2 g (5% by weight) of compatibilizer XR1 was kneaded at 190°C for 6 minute. In order to measure the mechanical properties, the kneaded blend was pressed into a 2mm thick sheet on a flat vulcanizing agent at 200°C, and the tensile strength was measured according to GB / T 528-1998 Thermoplastic Rubber Tensile Stress-Strain Performance Test Method and elongation at break (see Table 1 for results).

[0052]Using the raw materials shown in Table 1, the blends were prepared according to the above blending method, and the corresponding tensile strength and elongation at break tests were carried out. V1-V3 is a comparative example of the present invention, wherein 5% of the compatibilizer in V1 is replaced with POE, 5% of the compatibilizer in V2 is replaced with SEBS, and 5% of the compatibilizer in V3 is replaced with ethylene-propylene copolymer ela...

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PUM

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Abstract

The present invention discloses a kind of compatible mixture and it's preparing method and application. Thermosplasticity Polyurethane (TPU) is obtained from reaction of macromolecule glycol, diethylene glycol isocyanogens and short chain glycol. It has soft and hard chain segment, turning out with excellent flexibility and thermoplastic, and has two kinds of vitrification transforming temperature respectively corresponding to hard and soft phase, but it has a high price. The flexibility and wearable performance of copolymer of octane-ethene (POE) is rather bad, and the price is low. The invention creatively mixes both the two kinds of elastomer materials to produce new-style thermosplasticity elastomer, and to obtain new-style material with advantages of two kinds of materials. The compatible mixture of the invention has such advantages as hard, wearable, anticorrosive, anti-aging, low pollution, good processing performance and good using performance.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a compatible blend and its preparation method and application. Background technique [0002] Thermoplastic elastomers are a class of materials that combine the properties of vulcanized rubber with the processing properties of ordinary thermoplastics. Usually they are composed of block copolymers with a heterogeneous microstructure, such as styrene-butadiene-styrene block copolymers (SBS), polyurethane elastomer multi-block copolymer, etc. In addition, thermoplastic elastomers can also be made by melt blending harder thermoplastic materials with rubber-like materials. [0003] Thermoplastic polyurethane (TPU) is obtained from the reaction of macromolecular diols, diisocyanates and short-chain diols. It contains both soft and hard segments, exhibits elasticity and thermoplasticity, and has two phases corresponding to hard and soft phases, respectively. The glass transition temper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08
Inventor 陈旭东章明秋汪加胜
Owner SUN YAT SEN UNIV
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