Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of TPO thermoplastic elastomer and its preparation method and application

A technology of thermoplastic elastomers and elastomers, which is applied in the field of TPO thermoplastic elastomers and their preparation, and waterproof membranes, can solve problems such as inability to disperse, limit application range, insufficient welding strength, low-temperature bending tear strength, etc., to achieve The effect of overcoming the lack of performance and excellent welding performance

Active Publication Date: 2016-08-17
TIANJIN KINGFA NEW MATERIAL +1
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional TPO waterproof membrane has limited compatibility between ethylene elastomer and polypropylene, and ethylene elastomer cannot achieve good dispersion with polypropylene, resulting in insufficient welding strength, low-temperature bendability and tear strength. range of application

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of TPO thermoplastic elastomer and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] 20 kg of polypropylene PP T30S, 27 kg of polypropylene PP YPJ1215C, 50 kg of ethylene-octene copolymer POE 8842, 2.0 kg of styrene elastomer SEPTON 2002, 0.3 kg of heat stabilizer 1010, 0.3 kg of heat stabilizer 412S, 0.4 kg of weathering agent THT7001 was melted, mixed and dispersed in a twin-screw extruder with a length-to-diameter ratio of 40:1. The temperature of each section of the extruder was set at 220-260 ° C, extruded and granulated to obtain TPO thermoplastic elastomer.

[0071] Test its performance according to the corresponding standards, the list is as follows:

[0072] Test items

Embodiment 2

[0074] 20 kg of polypropylene PP S700, 24 kg of polypropylene PP AW191, 30 kg of ethylene-octene copolymer POE7447, 25 kg of ethylene-propylene-butadiene elastomer EPDM 505, 4.5 kg of styrene-based elastomer SEPTON 2063, 0.5 Kg of heat stabilizer 1010, 0.5 kg of heat stabilizer 627A, and 0.5 kg of UV-327 are melted, mixed and dispersed in a twin-screw extruder with a length-to-diameter ratio of 40:1, and the temperature of each section of the extruder is set at 220~260°C. Extrude and granulate to obtain TPO thermoplastic elastomer.

[0075] Test its performance according to the corresponding standards, the list is as follows:

[0076] Test items

Embodiment 3

[0078] 20 kg of polypropylene PP S900, 20 kg of polypropylene PP AW191, 20 kg of ethylene-octene copolymer POE7467, 31 kg of ethylene-propylene-butadiene elastomer EPDM 505, 7 kg of styrene-based elastomer SEBS 6006, 0.7 Kg of heat stabilizer 1010, 0.7 kg of heat stabilizer 1076, and 0.6 kg of weather resistance agent THT7001 are melted, mixed and dispersed in a twin-screw extruder with a length-to-diameter ratio of 40:1. The temperature of each section of the extruder is set at 220~260°C. Extrude and granulate to obtain TPO thermoplastic elastomer.

[0079] Test its performance according to the corresponding standards, the list is as follows:

[0080] Test items

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
melt flow indexaaaaaaaaaa
melt flow indexaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a TPO elastomer. The TPO elastomer comprises the following ingredients in percentage by weight: 28-60 percent of polypropylene, 40-60 percent of an ethylene type elastomer, 2-10 percent of a compatilizer, 0-1 percent of a heat stabilizer and 0-1 percent of weather resisting agent, wherein the compatilizer is a styrene type elastomer. According to the TPO elastomer, the weld mark tensile strength is larger than or equal to 8.0MPa, the TPO elastomer can be repeatedly bended at -40 degrees centigrade for 10<3> times without generating cracks, the tear strength at 23 degrees centigrade is larger than or equal to 60KN / m, and the tear strength at -40 degrees centigrade is larger than or equal to 120KN / m; therefore, the TPO elastomer has excellent welding performance, low-temperature bending performance and tear strength, overcomes the shortcomings of the existing TPO elastomers in performance, and is particularly suitable for the requirements on waterproof coiled materials in the building industry.

Description

technical field [0001] The invention belongs to the field of polymer material molding and processing, and in particular relates to a TPO thermoplastic elastomer and its preparation method and application. The TPO thermoplastic elastomer is especially suitable for waterproof coiled materials. Background technique [0002] TPO waterproof membrane is thermoplastic polyolefin waterproof membrane. It is based on thermoplastic polyolefin (TPO) synthetic resin that combines ethylene elastomer and polypropylene with advanced polymerization technology, and adds antioxidant and weather resistance agent. Made of new waterproof membrane. [0003] TPO waterproof membrane combines the performance advantages of EPDM and PVC waterproof membrane, and has the weather resistance and low temperature temperature of the former and the weldability of the latter. This material is different from traditional plastics, showing high elasticity of rubber at normal temperature, and can be molded like pl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08L23/14C08L23/16C08L23/08C08L53/02
CPCC08L23/0815C08L23/16C08L2205/035C08L2205/08C08L2207/04C08L23/14C08L23/12C08L53/025C08L53/02
Inventor 刘奇祥肖华明王扬利李聪陶四平李东
Owner TIANJIN KINGFA NEW MATERIAL