Precursor for thermoplastic polyeher ester elastomer foaming, foaming body and preparation method thereof

A thermoplastic polyester and elastomer technology, which is applied in the foaming field of thermoplastic polymer elastic materials, can solve the problems of difficult foaming uniformity, coarse cell structure size, low product yield, etc., and shorten the aging time. , optimize elasticity and compression properties, the effect of high product yield

Active Publication Date: 2018-10-19
唐靖
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantages of the foamed thermoplastic polyurethane beads reported in this report are that the cell structure size is relatively thick, "wrinkles" appear on the surface of the particles, and the product yield is low. In the foaming process, n-butane is used as a blowing agent, which is easy to cause environmental pollution. question
[0003] Although thermoplastic polyester elastomer (TPEE) has better mechanical properties than thermoplastic polyolefin elastomer (SEBS) and thermoplastic polyurethane elastomer (TPU), the structural characteristics of thermoplastic polyester elastomer determine that it is not easy to foam. and foaming uniformity

Method used

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  • Precursor for thermoplastic polyeher ester elastomer foaming, foaming body and preparation method thereof
  • Precursor for thermoplastic polyeher ester elastomer foaming, foaming body and preparation method thereof
  • Precursor for thermoplastic polyeher ester elastomer foaming, foaming body and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] a) Add 100kg of thermoplastic polyester elastomer particle A, 2kg of thermoplastic polyurethane, and 0.2kg of cell size stabilizer into the mixer. After mixing, it was introduced into a twin-screw extruder through a hopper for melt mixing, and the melt flow rate was tested at a constant temperature of 230°C and a load of 2.16kg. The melted and kneaded product meeting the melt flow rate index was introduced from the extruder into an underwater pelletizer, and cut into ellipsoidal particles with a diameter of 2.5 mm to obtain a thermoplastic polyester elastomer foaming precursor.

[0089] b) Add 100 kg of the obtained thermoplastic polyester elastomer foaming precursor to 10 kg of a carbon dioxide volatile foaming agent, add it into the autoclave while stirring, and raise the temperature of the autoclave to 120°C.

[0090] c) In the state of sufficient mixing and uniform heating, keep the temperature at this temperature for 0.5 hours, and finally open the discharge valve ...

Embodiment 2～9

[0093] Embodiment 2~9 comprises most of the operation steps in embodiment 1, and its difference is:

[0094] The materials, proportions and process conditions as shown in Table 1 were adopted.

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Abstract

In order to overcome the problem that the existing thermoplastic polyeher ester elastomer is difficult to foam, the invention provides a precursor for thermoplastic polyeher ester elastomer foaming. The precursor comprises the following components: a thermoplastic polyeher ester elastomer and a melt melting viscosity regulator, wherein the melting range starting point of the thermoplastic polyeherester elastomer is not smaller than 100 DEG C, and the melting range terminal point is not greater than 180 DEG C. Meanwhile, the invention further discloses thermoplastic polyeher ester foam and a preparation method thereof. The thermoplastic polyeher ester foam has the advantages of low weight, excellent appearance, excellent elasticity and stable optothermal characteristic.

Description

technical field [0001] The invention belongs to the technical field of thermoplastic polymer elastic material foaming, and relates to a thermoplastic polyester elastomer foaming precursor, a foam body and a preparation method thereof. Background technique [0002] Currently commonly used types of foamed plastics are polystyrene (PS) foamed plastics, polyethylene (PE) foamed plastics, polypropylene (PP) foamed plastics, etc. Polystyrene foam products are difficult to degrade and are prone to "white pollution". The United Nations Environment Organization has decided to stop using PS foam products. Polyethylene foam has poor high temperature resistance and is not suitable for applications in high temperature fields. Such products should have high surface hardness, brittleness under pressure, and low resilience, making it difficult to be used in protective applications such as continuous long-term buffering and shock absorption. Polyurethane (PU) soft and rigid foam materials ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/00C08L75/04C08J9/12
CPCC08J9/0061C08J9/122C08J2203/06C08J2367/00C08J2475/04
Inventor 唐靖李巡天
Owner 唐靖
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