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

Novel slip ring material/polylactic acid thermoplastic elastomer and preparation method thereof

A technology of thermoplastic elastomer and sliding ring material, which is applied in the field of thermoplastic elastomer, can solve the problems of high brittleness of polylactic acid and limit the application field, and achieve good mechanical properties

Inactive Publication Date: 2018-02-23
JIAXING UNIV
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polylactic acid is brittle, which greatly limits its application fields.

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
  • Novel slip ring material/polylactic acid thermoplastic elastomer and preparation method thereof
  • Novel slip ring material/polylactic acid thermoplastic elastomer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The polylactic acid and sliding ring materials were dried in a vacuum drying oven at 60°C for 48 hours; 50 parts of PLA, 50 parts of sliding ring materials and 1 part of antioxidant 1010 were placed in a torque rheometer at a speed of 70 revolutions per minute , Banburying temperature is 170℃, blending for 2min, adding 10 parts of crosslinking agent 4,4'-dicyclohexylmethane diisocyanate (HMDI), dynamic vulcanization for 10min. Pressing and molding on a vacuum tableting machine, the sliding ring material / polylactic acid thermoplastic elastomer is obtained. The parts referred to in this embodiment and the following embodiments are parts by mass. In this embodiment, the torque rheometer is a Hacker mill.

[0019] The material has a tensile strength of 22Mpa, an elongation at break of 81%, and a Shore hardness of 94. Cytotoxicity is 0 grade.

Embodiment 2

[0021] The polylactic acid and sliding ring materials were dried in a vacuum drying oven at 60°C for 48 hours; 40 parts of PLA, 60 parts of sliding ring materials and 1 part of antioxidant 1010 were placed in a Hack internal mixer at a speed of 70 revolutions / min. , Banburying temperature is 170℃, blending for 2min, adding 10 parts of crosslinking agent 4,4'-dicyclohexylmethane diisocyanate (HMDI), dynamic vulcanization for 10min. Pressing and molding on a vacuum tableting machine, the sliding ring material / polylactic acid thermoplastic elastomer is obtained.

[0022] The material has a tensile strength of 15 Mpa, a breaking elongation of 93%, and a Shore hardness of 92. Cytotoxicity is 0 grade.

Embodiment 3

[0024] The polylactic acid and sliding ring materials were dried in a vacuum drying oven at 60°C for 48 hours; 30 parts of PLA, 70 parts of sliding ring materials and 1 part of antioxidant 1010 were placed in a Hack internal mixer at a speed of 70 rpm , Banburying temperature is 170℃, blending for 2min, adding 10 parts of crosslinking agent 4,4'-dicyclohexylmethane diisocyanate (HMDI), dynamic vulcanization for 10min. Pressing and molding on a vacuum tableting machine, the sliding ring material / polylactic acid thermoplastic elastomer is obtained.

[0025] The tensile strength of the material is 20Mpa, the elongation at break is 155%, and the Shore hardness is 91. Cytotoxicity is 0 grade.

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
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for preparing novel bio-based thermoplastic elastomer. The novel thermoplastic elastomer is composed of a slip ring material serving as an elastomer component, bio-based degradable polylactic acid serving as a thermoplastic resin part, and an isocyanate-based compound serving as a cross-linking agent. Dynamic vulcanization is carried out in an internal mixer, and the brand-new thermoplastic elastomer is prepared. According to the prepared novel thermoplastic elastomer, the tensile strength is 5-25 MPa, the elongation at break is 40-200%, and the cytotoxicity ofthe thermoplastic elastomer is grade 0 or grade 1. The raw materials of the prepared thermoplastic elastomer are renewable resources and can be degraded. According to the method for preparing the thermoplastic elastomer, polylactic acid is popularized and applied to the range of the elastomer.

Description

Technical field [0001] The invention relates to the blending modification of a new type of polymer material sliding ring material and bio-based plastic polylactic acid, in particular to bio-based degradable thermoplastic elastomers, and belongs to the technical field of polymer reactive blending modification. Background technique [0002] Most polymer materials are derived from petroleum resources. Facing the huge gap in petroleum resources, looking for alternative resources for petroleum and developing bio-based polymer materials are technical means to reduce dependence on non-renewable resources such as petroleum. The vigorous development of renewable resource materials is in line with the concept of improving the environment and promoting the sustainable development of the global economy. Therefore, it is urgent to develop materials that are derived from nature and are environmentally friendly. [0003] Traditional vulcanized rubber cannot be effectively recycled, causing serio...

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 Applications(China)
IPC IPC(8): C08L67/04C08L21/00C08K5/134C08K5/29
CPCC08L67/04C08L21/00C08L2201/06C08L2207/04C08L2312/00C08K5/1345C08K5/29
Inventor 李雪
Owner JIAXING UNIV