Life jacket with LDPE foaming inner core and preparation method of inner core of life jacket

A life jacket and inner core technology, applied in the field of life jackets, can solve the problems of high surface water absorption, low tensile strength, and high linear shrinkage of life jackets, and achieve the effects of light weight, good fit, and soft hand feeling

Inactive Publication Date: 2020-04-28
WUXI XINGTAI SHIPPING EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a life jacket and its preparation method to solve the technical problems of existing life jackets such as high surface water absorption, low tensile strength, high linear shrinkage and low elongation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1. The lifejacket of this embodiment includes a jacket and an inner core that functions as a float. The inner core is placed in the interlayer of the jacket. The basic composition of the inner core is: 100 parts of LDPE; 40 parts of toluene diisocyanate ; 3 parts of tribasic lead sulfate; 40 parts of polyether triol; 1.2 parts of DCP; 0.3 parts of triethylene diamine; 20 parts of monofluorotrichloromethane; 3 parts of polyoxyalkylenes; 35 parts of EVA; 0.6 parts; 0.1 parts of N-aminoethylethanolamine; 0.2 parts of dibutyltin dilaurate; 5 parts of zinc oxide; 0.2 parts of stannous octoate; 2 parts of stearic acid.

[0012] The manufacturing method of the aforementioned inner core material includes the following steps:

[0013] a. Configure raw materials according to the formula;

[0014] b. Then mix the configured raw materials in an extractor at a temperature of 110 degrees for 20 minutes, and then take out the mixed materials and put them in an open mixer at a tem...

Embodiment 2

[0015] Embodiment 2. The lifejacket of this embodiment includes a jacket and an inner core that functions as a float. The inner core is placed in the interlayer of the jacket. The basic composition of the inner core is: 100 parts of LDPE; 50 parts of toluene diisocyanate ; 5 parts of tribasic lead sulfate; 50 parts of polyether triol; 1.8 parts of DCP; 0.5 parts of triethylene diamine; 40 parts of AC blowing agent; 5 parts of polyoxyalkylene; 55 parts of EVA; 1 part; 0.5 parts of polyether triol; 0.6 parts of dibutyltin dilaurate; 25 parts of zinc oxide; 0.8 parts of stannous octoate; 8 parts of stearic acid.

[0016] The manufacturing method of the aforementioned inner core material includes the following steps:

[0017] a. Configure raw materials according to the formula;

[0018] b. Then mix the configured raw materials in an extractor at 115 degrees for 25 minutes, then take out the mixed materials and put them in an open mill at 95 degrees for 25 minutes. After the open mixing ...

Embodiment 3

[0019] Embodiment 3 The lifejacket of this embodiment includes an outer jacket and an inner core that functions as a float. The inner core is placed in the interlayer of the outer jacket. The basic composition of the inner core is: 100 parts of LDPE; 48 parts of toluene diisocyanate ; 4 parts of tribasic lead sulfate; 46 parts of polyether triol; 1.6 parts of DCP; 0.4 parts of triethylene diamine; 29 parts of monofluorochloromethane; 4 parts of polyoxyalkylene; 47 parts of EVA; 0.8 parts; 0.4 parts of polyether triol; 0.4 parts of dibutyltin dilaurate; 16 parts of zinc oxide; 0.6 parts of stannous octoate; 5 parts of stearic acid.

[0020] The manufacturing method of the aforementioned inner core material includes the following steps:

[0021] a. Configure raw materials according to the formula;

[0022] b. Then mix the configured raw materials in an extractor at a temperature of 120 degrees for 30 minutes, and then take out the mixed materials and put them in an open mixer at a tem...

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PUM

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Abstract

The invention discloses a life jacket with an LDPE foaming inner core and a preparation method of the inner core of the life jacket. The life jacket comprises an outer sleeve and the inner core playing a role of a floater, the inner core is arranged in the interlayer of the outer sleeve, and the formula of the inner core basically comprises the following components: 100 parts of LDPE; 40-50 partsof toluene diisocynate; 3-5 parts of tribasic lead sulfate; 40-50 parts of polyether triol; 1.2-1.8 parts of DCP; 0.3-0.5 parts of triethylene diamine; 20-40 parts of a foaming agent; 3-5 parts of polyoxyalkylene; 35-55 parts of EVA; 0.6-1 parts of diethylethanolamine; 0.1-0.5 parts of a cross-linking agent; 0.2-0.6 parts of dibutyltin dilaurate; 5-25 parts of zinc oxide, 0.2-0.8 parts of stannousoctoate and 2-8 parts of stearic acid. The life jacket has the advantages that after the inner core is immersed in water for 24 hours, the buoyancy loss does not exceed 5%, and a good buoyancy statecan be stably kept in water.

Description

Technical field [0001] The invention relates to a life jacket, which can be used for various water operation requirements that require high fitness performance, such as deck operation, fishery, offshore drilling platform operation and other fields. Background technique [0002] Life jackets are commonly used tools in the fields related to water operations, generally as disclosed in the Chinese utility model patent: super buoyancy life jacket (patent number CN93214217.6). Its structure uses a novel waterproof and flame retardant fabric to form a "life jacket". The inner and outer layers, and the interlayer between the inner and outer layers is specially treated non-absorbent, flame-retardant high-density polyethylene foam material interlayer, stitched into a specific form of two pieces of chest and back. The nylon high-strength webbing of the Ya-shaped buckle clip is stitched into one body. It is safe and reliable, has super buoyancy and warm keeping function, and has the advanta...

Claims

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Application Information

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IPC IPC(8): B63C9/115C08J9/14C08J9/10C08L23/06C08L75/08C08L23/08C08K13/02C08K3/22C08K5/09
CPCB63C9/115C08J9/0023C08J9/0066C08J9/0095C08J9/103C08J9/148C08J2203/04C08J2203/144C08J2323/06C08J2423/08C08J2475/08
Inventor 包国平黄锡安
Owner WUXI XINGTAI SHIPPING EQUIP
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