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Life jacket and preparation method thereof

A life jacket and foaming agent technology, applied in the field of life jacket and its preparation, can solve the problems of low elongation, low tensile strength, high linear shrinkage, etc., and achieve good cold resistance

Active Publication Date: 2014-12-10
广东汇乐水上游乐用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above technical problems, the present application provides 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

[0021] Weigh 100 parts of LDPE according to the ratio of parts by weight; 40 parts of toluene diisocyanate; 3 parts of tribasic lead sulfate; 40 parts of polyether trihydric alcohol; 1.2 parts of DCP; 0.3 parts of triethylenediamine; 20 parts; 3 parts of polyoxyalkylene; 35 parts of EVA; 0.6 parts of diethylethanolamine; 0.1 part of N-aminoethylethanolamine; 0.2 parts of dibutyltin dilaurate; 5 parts of zinc oxide; Fatty acid 2 parts.

[0022] First, mix LDPE in a plastic mixer for 4 minutes at a plasticizing temperature of 110°C. After the LDPE is plasticized into sheets, add toluene diisocyanate, tribasic lead sulfate, polyether triol and foaming agent to cool down to 80°C and mix for 8 minutes. Add the remaining raw materials and knead at 80°C for 6 minutes.

[0023]Molded into a blank, put the mixed material into the mold, raise the temperature to 150°C, press at a pressure of 0.6MPa for 14min, cool to 20°C, take out the blank; foam molding, put the blank into the foam mo...

Embodiment 2

[0027] Weigh 100 parts of LDPE according to the ratio of parts by weight; 50 parts of toluene diisocyanate; 5 parts of tribasic lead sulfate; 50 parts of polyether trihydric alcohol; 1.8 parts of DCP; 0.5 parts of triethylenediamine; 40 parts; 5 parts of polyoxyalkylene; 55 parts of EVA; 1 part of diethylethanolamine; 0.5 part of N-aminoethylethanolamine; 0.6 part of dibutyltin dilaurate; 25 parts of zinc oxide; Fatty acid 8 parts.

[0028] First, mix LDPE in a plastic mixer for 8 minutes at a plasticizing temperature of 130°C. After the LDPE is plasticized into sheets, add toluene diisocyanate, tribasic lead sulfate, polyether triol and foaming agent to cool down to 100°C and mix for 12 minutes. Add the remaining raw materials and knead at 110°C for 10 minutes.

[0029] Molded into a blank, put the kneaded material into the mold, raise the temperature to 170°C, mold under a pressure of 0.8MPa for 18min, cool to 40°C, take out the blank; foam molding, put the blank into the f...

Embodiment 3

[0032] Weigh 100 parts of LDPE according to the ratio of parts by weight; 42 parts of toluene diisocyanate; 3.5 parts of tribasic lead sulfate; 44 parts of polyether trihydric alcohol; 1.4 parts of DCP; 3.5 parts of polyoxyalkylene; 40 parts of EVA; 0.7 parts of diethylethanolamine; 0.2 parts of N-aminoethylethanolamine; 0.3 parts of dibutyltin dilaurate; 10 parts of zinc oxide; 0.4 parts of stannous octoate; stearin acid 3 parts.

[0033] First, mix LDPE in a plastic mixer for 5 minutes at a plasticizing temperature of 115°C. After the LDPE is plasticized into sheets, add toluene diisocyanate, tribasic lead sulfate, polyether triol and foaming agent and cool down to 85°C and mix for 9 minutes. Add the remaining raw materials and knead at 90°C for 7 minutes.

[0034] Molded into a blank, put the kneaded material into the mold, raise the temperature to 155°C, mold under a pressure of 0.65MPa for 15min, cool to 25°C, take out the blank; foam molding, put the blank into the foam...

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Abstract

The invention discloses a life jacket and preparation method thereof. The life jacket is prepared by weighting the following components in parts by weight: LDPE (Low-Density Polyethylene), toluene diisocyanate, tribasic lead sulfate, polyether triol, DCP (Dicumyl Peroxide), triethylenediamine, a foaming agent, polyoxyalkylene, EVA (Ethylene Vinyl Acetate), diethylethanolamine, a crosslinking agent, dibutyltin dilaurate, zinc oxide, stannous octoate and stearic acid, plastifying and carrying out compression molding to obtain a blank and carrying out foam molding. The relative density of the product is 0.03-0.05, the surface water absorption is 5-15mg / cm<3>, the linear shrinkage percentage is 1-2%, the tensile strength is 0.4-0.8MPa, the elongation is 150-250%, the life jacket dose not change when the life jacket is placed at a high temperature of 80-90 DEG C for 24 hours and at a temperature of minus 50 DEG C for 20-24 hours.

Description

technical field [0001] The application belongs to the field of life jacket preparation technology, and in particular relates to a life jacket and a preparation method thereof. Background technique [0002] A lifejacket is a coat with a lighter specific gravity than water, so that the person wearing the lifejacket can float on the seawater, achieving the effect of lifesaving in water sports. The material composition of the life jacket is mainly styrofoam or inflatable water bubbles. Most of the exterior colors are bright colors, such as bright orange, banana yellow, etc., which are easy for lifeboats to find. Life jacket, also known as life vest, is a life-saving clothing designed similar to a vest, made of nylon fabric or neoprene (NEOPRENE), buoyancy material or inflatable material, reflective material, etc. The general service life is 5-7 years, and it is one of the life-saving equipment on ships and planes. It is generally a vest type, made of foam plastic or cork. It...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L75/08C08L23/08C08G18/66C08G18/48C08K13/02C08K3/30C08K3/22C08K5/09C08J9/14C08J9/10C08G101/00
CPCC08G18/3228C08G18/3271C08G18/4804C08G18/4829C08G18/6685C08G18/6688C08J9/103C08J9/146C08J2203/04C08J2203/164C08J2323/06C08J2375/08C08L23/06C08L75/08C08L2203/14C08L2205/03C08L2207/066C08G2110/005C08L23/0853C08K13/02C08K2003/2296C08K5/09C08K2003/3045C08K5/14
Inventor 倪海霞
Owner 广东汇乐水上游乐用品有限公司
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