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

Preparation method of hydrolysis-resistant polyurethane elastomer for ship vibration isolation components

A technology for polyurethane elastomers and vibration isolation components, which is applied in the field of preparation of hydrolysis-resistant polyurethane elastomers for ship vibration isolation components, achieving the effects of excellent mechanical properties, simple operation, and no pollution to the environment

Active Publication Date: 2021-05-11
NAVAL UNIV OF ENG PLA
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to address the above-mentioned status quo, aiming to provide a ship insulation that can effectively solve the problem of long-term hydrolysis resistance stability of polyurethane materials used for ship vibration isolation components, and at the same time have excellent mechanical properties, low preparation cost and easy quality control. Preparation method of hydrolysis-resistant polyurethane elastomer for vibration components

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
  • Preparation method of hydrolysis-resistant polyurethane elastomer for ship vibration isolation components
  • Preparation method of hydrolysis-resistant polyurethane elastomer for ship vibration isolation components

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1) Polycaprolactone graft modification process

[0020] Weigh 100 parts of pendant amino polysiloxane and 100 parts of caprolactone in a three-necked flask, stir (300 rpm) and add 0.5 parts of tetrabutyl titanate, and open at 180 ° C. The ring polymerization was carried out for 10 hours to generate polysiloxane-grafted polycaprolactone polyol.

[0021] The molecular weight of pendant amino polysiloxane is 500.

[0022] 2) Synthesis of hydrolysis-resistant polyurethane composites

[0023] Take by weighing 100 parts of p-phenylene diisocyanate in parts by weight, 100 parts of polycaprolactone polyol polyols grafted by polysiloxane obtained in step 1), 7 parts of butanediol, trimethylol 0.6 parts of propane, mixed evenly and defoamed, poured together into a mold preheated at 110°C, vulcanized for 20 minutes and demoulded to obtain a polyurethane elastomer; after placing the polyurethane elastomer in an oven at 120°C After vulcanization for 24 hours, the required hydroly...

Embodiment 2

[0026] 1) Polycaprolactone graft modification process

[0027] Weigh 150 parts of pendant amino polysiloxane and 200 parts of caprolactone in a three-necked flask, stir (300 rpm) and add 0.8 parts of tetrabutyl titanate, and open at 180 ° C. The ring polymerization was carried out for 10 hours to produce polysiloxane-grafted polycaprolactone polyol.

[0028] The molecular weight of pendant amino polysiloxane is 500.

[0029] 2) Synthesis of hydrolysis-resistant polyurethane composites

[0030] Weighing parts by mass is 100 parts of 1,5 naphthalene-diisocyanate, 200 parts of polycaprolactone polyols grafted by polysiloxane obtained in step 1), 5 parts of butanediol, trihydroxy 3.5 parts of methyl propane, mixed evenly and defoamed, poured together into a mold preheated at 110°C, vulcanized for 20 minutes and demoulded to obtain a polyurethane elastomer; put the polyurethane elastomer into an oven at 120°C After 24 hours of vulcanization, the required hydrolysis-resistant pol...

Embodiment 3

[0033] 1) Polycaprolactone graft modification process

[0034] Weigh 200 parts of pendant amino polysiloxane and 100 parts of caprolactone in a three-necked flask, stir (300 rpm) and add 0.8 parts of tetrabutyl titanate, and open at 180 ° C. The ring polymerization was carried out for 10 hours to produce polysiloxane-grafted polycaprolactone polyol.

[0035] The molecular weight of pendant amino polysiloxane is 500.

[0036] 2) Synthesis of hydrolysis-resistant polyurethane composites

[0037] Weighing mass parts is 50 parts of 1,5 naphthalene-diisocyanate, 50 parts of p-phenylene diisocyanate, 200 parts of polycaprolactone polyols grafted by polysiloxane obtained in step 1), butane diisocyanate 0.6 parts of alcohol and 8 parts of trimethylolpropane, mixed evenly and defoamed, and poured together into a mold preheated to 110°C, vulcanized for 20 minutes and demolded to obtain a polyurethane elastomer; put the polyurethane elastomer into Post vulcanization in an oven at 120°...

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

No PUM Login to View More

Abstract

The invention relates to a preparation method of a hydrolysis-resistant polyurethane elastomer used for ship vibration isolation components. Take side amino polysiloxane and caprolactone in a three-necked flask, stir and add tetrabutyl titanate, and perform ring-opening polymerization reaction. , generate polysiloxane-grafted polycaprolactone polyols; get diisocyanate, polysiloxane-grafted polycaprolactone polyols, butylene glycol, and trimethylolpropane mix uniformly and defoam, Pour them into a mold together, and release the mold after vulcanization to obtain a polyurethane elastomer; put the polyurethane elastomer in an oven and vulcanize to obtain the required hydrolysis-resistant polyurethane composite material. The invention can effectively solve the inherent technical problem that traditional polyurethane materials can only rely on hydrolysis-resistant agents to "eat" water molecules and cannot maintain their long-term hydrolysis-resistant stability; The obtained material has excellent mechanical properties and long-term hydrolysis resistance, and is suitable for complex operating environments such as various ships.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a preparation method of a hydrolysis-resistant polyurethane elastomer for ship vibration isolation components. Background technique [0002] In order to reduce the vibration of the ship and improve the comfort of the occupants, more vibration isolation elements are usually used. With the increasingly higher requirements for comfort in new ships, higher requirements are also put forward for the performance of materials used for vibration isolation components. Polyurethane material has the basic advantages of high strength and small ratio of dynamic and static modulus, so it is very suitable for the manufacture of new vibration isolation components. However, for ship vibration isolation components, the requirements for the material's hydrolysis resistance are high, and the polyurethane material has poor hydrolysis resistance, so it needs to be modified. At present, car...

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): C08G18/64C08G18/61C08G18/46C08G63/08C08G77/445
CPCC08G18/4692C08G18/61C08G18/6469C08G63/08C08G77/445
Inventor 杨雪何琳帅长庚吕志强
Owner NAVAL UNIV OF ENG PLA