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

Manufacturing method of polyurethane pur elastomer and foamed damping ring buffer ring of automobile parts

A manufacturing method and polyurethane technology, applied in the field of polyurethane PUR new materials, can solve the problems of poor dynamic fatigue resistance, high and low temperature resistance, poor bearing capacity, etc., and achieve the effect of strong compactness, strong dynamic fatigue resistance, and improved bearing capacity.

Active Publication Date: 2017-12-01
肯普(福建省)科技有限公司 +1
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Based on the deficiencies of the above-mentioned prior art, the present invention provides a polyurethane PUR elastomer and a manufacturing method of a foamed damping ring buffer ring for automobile parts, aiming at solving the problem of poor dynamic fatigue resistance and poor bearing capacity of the existing polyurethane PUR elastomer and buffer ring , high and low temperature resistance, poor hydrolysis resistance, and poor elasticity, and improve the service life of polyurethane PUR materials

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
  • Manufacturing method of polyurethane pur elastomer and foamed damping ring buffer ring of automobile parts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The manufacture method of polyurethane PUR elastomer, carries out as follows.

[0061] (1) The polymerization reaction manufacturing of elastomer prepolymers has the following three situations.

[0062] (1) Use polyether polyol or polyester polyol or polycarbonate polyol or polycaprolactone polyol

[0063] Polymerize with NDI at 70°C~145°C for 3~5 hours to form NDI polymer prepolymer, in which -NCO group content satisfies: 1%≤-NCO group content≤9%; the preferred temperature is: 70°C~85 °C, 85°C~105°C, 105°C~120°C or 120°C~145°C; the preferred time is 0.1-5 hours.

[0064] (2) Polyether polyol or polyester polyol or polycarbonate polyol or polycaprolactone polyol

[0065] Polymerize with MDI at 70°C~130°C for 3~5 hours to form MDI polymer prepolymer, in which -NCO group content meets: 1%≤-NCO group content≤9%; the preferred temperature is: 70°C, 83°C , 91°C, 109°C or 130°C; the preferred time is 4 hours.

[0066] (3) Polyether polyol or polyester polyol or polycarbon...

Embodiment 2

[0080] The manufacturing method of the polyurethane PUR auto parts foaming damping ring buffer ring is carried out according to the following steps.

[0081] (1) The polymerization reaction manufacturing of polyurethane PUR microcellular foaming prepolymer has the following three situations:

[0082] (1) Polyether polyol or polyester polyol or polycarbonate polyol or polycaprolactone polyol

[0083]Polymerize with NDI at 50°C~145°C for 0.1~5 hours to form NDI polymer prepolymer, in which -NCO group content satisfies: 11%≤-NCO group content≤50%; the preferred temperature is: 80°C, 95°C °C, 100 °C, 115 °C or 128 °C; the preferred time is 1-3 hours.

[0084] (2) Polyether polyol or polyester polyol or polycarbonate polyol or polycaprolactone polyol

[0085] Polymerize with MDI at 55°C~130°C for 1~5 hours to form MDI polymer prepolymer, in which -NCO group content satisfies: 11%≤-NCO group content≤50%; the preferred temperature is: 80°C, 90 °C, 100 °C, 105 °C, 110 °C, or 119 °C...

Embodiment 3

[0101] The manufacturing method of the polyurethane PUR auto parts foaming damping ring buffer ring is carried out according to the following steps.

[0102] (1) Preparation of polymeric prepolymer: polymerizing isocyanate and polyol to prepare polymeric prepolymer;

[0103] The isocyanate is naphthalene-1,5 diisocyanate (NDI), diphenylmethane 4,4'-diisocyanate (MDI), toluene diisocyanate (TDI), xylylene diisocyanate (XDI), formaldehyde Cyclohexyl diisocyanate (HTDI), dimethyl biphenyl 3,3′-p-phenylene diisocyanate (PPDI), isophorone diisocyanate (IPDI), polymethylene polyphenyl polyisocyanate (PAPI), 1,6-hexylene diisocyanate (HDI) is any one, two or more of the nine materials mixed.

[0104] The polyol is made of polyurethane polyol and polyether polyol; polycarbonate diol (PCD), polypropylene glycol (PPG), polyethylene adipate propylene glycol ester diol (PEPA), polytetramethylene Ether diol, polyethylene adipate diol (PEA), ethylene glycol (EDO), 1,6-hexanediol (HDO), po...

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
lengthaaaaaaaaaa
thicknessaaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The invention provides manufacturing methods of a polyurethane (PUR) elastomer and an automobile part foam damping buffer ring. The manufacturing method of the PUR elastomer comprises the steps of the polymerization reaction production of a PUR elastomer prepolymer, the proportioning of the polymerized prepolymer, the production of polymerization accessories, pouring or casting molding and vulcanization treatment, and the manufacturing method of the buffer ring further comprises a cutting molding step. The PUR elastomer obtained by the manufacturing method has not only excellent mechanical and chemical properties, such as excellent wear resistance, oil resistance, high and low temperature resistance, hydrolysis resistance, good elasticity and high flexibility, and but also excellent bearing capacity and outstanding dynamic fatigue resistance; besides, the service life of the material is greatly prolonged. The PUR elastomer material can be applied to either the buffering damping systems of the automotive trim components, or the manufacturing of automobiles, communication and transportation, spaceflight, light industries, engineering equipment elevator components.

Description

technical field [0001] The invention relates to the technical field of polyurethane PUR new materials, in particular to a polyurethane PUR elastic body with super dynamic fatigue resistance and a manufacturing method of a foamed damping ring buffer ring for automobile parts. Background technique [0002] Polyurethane PUR microcellular elastomer is favored by the market because of its excellent static and dynamic mechanical properties, especially for vibration and damping systems. They not only have good mechanical and chemical properties, but also have the advantages of easy production and processing and convenient molding. Polyurethane PUR microcellular elastomer is a chemical system formed by pouring a liquid reaction mixture into a mold cavity. The chemical raw materials used mainly include isocyanate, polyol and auxiliary materials. The auxiliary materials include chain extenders, foaming agents, catalysts, and foam equalizers. etc., using various chemical structural co...

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): C08L75/06C08L75/08C08G18/48C08G18/44C08G18/42C08J3/24
Inventor 何光仲
Owner 肯普(福建省)科技有限公司