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

A kind of preparation method of solid buoyancy profile

A technology of solid buoyancy and profiles, applied in the field of preparation of solid buoyancy profiles, can solve problems such as difficulty in realizing automation, achieve the effects of omitting demoulding, reducing labor intensity, and improving production efficiency

Active Publication Date: 2020-05-15
OCEAN UNIV OF CHINA
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

What's more, these processes are difficult to automate

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 preparation method of solid buoyancy profile
  • A kind of preparation method of solid buoyancy profile
  • A kind of preparation method of solid buoyancy profile

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] The method for preparing a solid buoyancy profile provided by the present invention includes the following steps:

[0027] (1) Mix the pre-weighed resin system with hollow glass beads to obtain a mixture; the resin system includes: a thermosetting resin with a viscosity of not more than 50 Pa·s, a curing agent, a catalyst, and an accelerator; the hollow glass beads The hydrostatic pressure resistance of the beads is not less than 30MPa; preferably not less than 40MPa;

[0028] (2) Extruding the mixture through a vacuum extruder to obtain a profile blank; wherein the ratio of the cross-sectional area of ​​the shaping section of the vacuum extruder to the cross-sectional area of ​​the extruder barrel is between 0.02-0.8; The extrusion pressure is between 0.5MPa-15MPa;

[0029] (3) Curing the profile blank to obtain a solid buoyant profile.

[0030] In order to realize the preparation of solid buoyancy profiles through the extrusion process, the inventor has conducted extensive r...

Embodiment 1

[0048] Weigh the epoxy resin monomer (TTA21), curing agent (tetrahydrophthalic anhydride), catalyst (KH560) and accelerator (N,N-dimethylbenzylamine) in a mass ratio of 100:40:1.5:1 , Mix and prepare an epoxy resin system with a total weight of 6kg. The volume of the epoxy resin system is 5L (the density of the epoxy system is 1.2g / cm 3 ).

[0049] Weigh hollow glass beads (3M Company, HGS8000X, USA, hydrostatic pressure resistance 50MPa, density 0.42g / cm 3 ) 4.9kg with a volume of 11.7L. At this time, the mass ratio of the hollow glass microspheres to the epoxy resin system is 1:1.2. The volume ratio is 70:30.

[0050] The hollow glass beads and epoxy resin system are initially mixed with a mixer and then put into a vacuum screw extruder. Mix and extrude under vacuum conditions (vacuum degree -0.085~-0.1MPa.). The extrusion head is a square column. The ratio of the cross-sectional area of ​​the shaping section of the extruder to the cross-sectional area of ​​the extruder barre...

Embodiment 2

[0054] Combine epoxy resin monomer (TTA21), curing agent (tetrahydrophthalic anhydride), curing agent (dodecenyl succinic anhydride), catalyst (KH560) and accelerator (N,N-dimethylbenzylamine) in mass ratio 100:40:140:1.5:1, weigh, mix, and prepare an epoxy resin system with a total weight of 7.04kg. The volume of the epoxy resin system is 6.4L (the density of the epoxy resin system is 1.1g / cm 3 ).

[0055] Weigh hollow glass beads (XLD6000, 3M Company, USA, hydrostatic pressure resistance 40MPa, density 0.32g / cm 3 ) 4.35kg with a volume of 13.6L. At this time, the mass ratio of the hollow glass microspheres to the epoxy resin system is 1:1.62. The volume ratio is 68:32.

[0056] The hollow glass microspheres and epoxy resin system are initially mixed and then put into the vacuum screw extruder. Mix and extrude under vacuum conditions. The extrusion head is round tube shape. The ratio of the cross-sectional area of ​​the shaping section of the extruder to the cross-sectional ar...

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
particle diameteraaaaaaaaaa
densityaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The embodiment of the invention provides a method for preparing solid buoyancy sections. The method comprises the following steps that (1) a pre-weighed resin system and hollow glass microbeads are mixed to obtain a mixture, wherein the resin system comprises thermosetting resin with the viscosity of 50 Pa.s or below, a curing agent, a catalyst and a promoter, and the hydrostatic-pressure resistance strength of the hollow glass microbeads is not less than 30 MPa; (2) extrusion formation is conducted on the mixture through a vacuum extruder to obtain section blanks, wherein the ratio of the cross-sectional area of a forming segment of an extrusion head of the vacuum extruder to the cross-sectional area of an extruder cylinder is between 0.02 and 0.8, and the extrusion pressure is between 0.5 MPa and 15 MPa; (3) the section blanks are solidified to obtain the solid buoyancy sections. By means of the method for preparing the solid buoyancy sections, demolding and other steps can be omitted, the work of disassembling, assembling and cleaning molds and the like is not needed, the production efficiency is improved, and the labor intensity is reduced.

Description

Technical field [0001] The invention relates to the technical field of material preparation, in particular to a method for preparing a solid buoyancy profile. Background technique [0002] With the rise and development of ocean development science, human beings have explored more and more underwater worlds, and dive deeper and deeper. There is an urgent need for buoyancy materials that can be used in the deep sea to ensure the safe use of deep-water equipment. Therefore, since the 1960s, research on high-strength buoyancy materials has begun at home and abroad. [0003] Patent 200610043524.4 discloses a processable solid buoyancy material for deep sea use and a preparation method thereof. The method is to stir and mix hollow glass microspheres and epoxy resin in a kneader at 80-100° C., and put them into a mold to pressurize and increase the temperature for curing. The applicable depth is 4000 meters. [0004] Patent 200910174576.9 discloses a processable solid buoyancy material an...

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): C08L63/00C08L75/04C08L67/00C08K7/28B29C48/92
CPCB29C48/92B29C2948/92514B29C2948/92904C08K7/28C08K2201/003C08L63/00
Inventor 戴金辉李萌昭吴平伟
Owner OCEAN UNIV OF CHINA