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A pebax/tpu blended foam material

A foaming material and blending technology, applied in the field of Pebax/TPU blended foaming material and its preparation, can solve the problems of water resistance, high cost, easy yellowing, etc., achieve good resilience and mechanical properties, and low density Effect

Active Publication Date: 2020-12-15
FUJIAN XINGXUN NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a Pebax / TPU blended foaming material and a preparation method thereof. The technical problem to be solved by the present invention is: in order to solve the problem that the TPU material product has a high density and is easy to shrink, the product is not water-resistant, has poor weather resistance, and is easy to yellow. and other issues, as well as the high cost of producing Pebax products, and finally obtain an ultra-light, high-elastic, high-strength foaming material

Method used

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  • A pebax/tpu blended foam material
  • A pebax/tpu blended foam material
  • A pebax/tpu blended foam material

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Experimental program
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Effect test

Embodiment 1-3

[0022] According to the parts by weight, it is divided into three groups with different ratios of Pebax and TPU, and N 2 and pentane as a physical blowing agent for supercritical foaming. See Table 1 for the specific formula, process parameters and density.

[0023] Embodiment 1-3 concrete steps are as follows:

[0024] (1) Dry Pebax and TPU in an oven at 70°C for 8 hours, weigh according to the formula, blend Pebax and TPU, extrude and granulate through a twin-screw extruder, and the screw speed is 60-120r / min , to obtain pellets of Pebax / TPU blend material, the temperature of the first zone of the extruder is 153°C, the temperature of the second zone is 155°C, the temperature of the third zone is 158°C, the temperature of the fourth zone is 160°C, and the temperature of the head is 163°C ;

[0025] (2) Put the Pebax / TPU blended particles into the autoclave, add water, then add pentane, turn on the stirring paddle, and feed in N 2 , and heating up, pressurizing, and then c...

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Abstract

The invention discloses a Pebax / TPU (Thermoplastic Polyurethane) blended foaming material. The Pebax / TPU blended foaming material is prepared from Pebax and TPU in the weight ratio of (10 to 90) to (90 to 10), totaling 100 parts by weight. A preparation method of the Pebax / TPU blended foaming material comprises the following steps: blending the Pebax and the TPU, and pelletizing; drying the particles; placing the dried particles into a high-pressure reaction kettle filled with an appropriate amount of water; starting stirring; introducing a physical foaming agent, and heating and pressurizingto reach a supercritical state; when supercritical fluid is saturated in polymer particles, opening a valve; relieving pressure rapidly to prepare microporous foaming beads. The prepared microporous elastomer foaming material has excellent rebound resilience, processing property, low temperature resistance, impact resistance, abrasion resistance, corrosion resistance, aging resistance and dynamicproperty. Moreover, the material is non-toxic, environmentally friendly and free from pollution through adoption of a supercritical foaming method.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a Pebax / TPU blended foam material and a preparation method thereof. Background technique [0002] Pebax is a block polyetheramide elastomer product, which belongs to engineering polymers and is a thermoplastic elastomer that does not require plasticization. The molecular chain has excellent flexibility, a wide range of hardness, good resilience and easy processing; Pebax material has good low-temperature impact resistance and no hardening at low temperature; low hysteresis performance and very good dynamic performance; chemical corrosion resistance, excellent Anti-aging and sun exposure ability. Good flex and fatigue resistance, reduced breakage, increased springback and excellent "hand feel". Pebax materials are commonly used in the automotive industry and as sports equipment, among other things. [0003] TPU refers to thermoplastic polyurethane elastomer rubber, which is div...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/00C08L75/04C08J9/14C08J9/12
CPCC08J9/122C08J9/141C08J2203/06C08J2203/14C08J2205/044C08J2375/04C08J2377/00C08J2475/04C08J2477/00
Inventor 张振秀赵悦邹立温时宝
Owner FUJIAN XINGXUN NEW MATERIALS TECH CO LTD