Flexible polyurethane and polyurethane/polyorganosiloxane foam materials that absorb impact energy

A polyorganosiloxane and polyurethane foam technology, applied in the field of polyurethane foam and polyorganosiloxane foam materials, can solve the problems of deceleration, insufficient compression, and excessive resistance of the impacted body

Active Publication Date: 2016-10-05
G·德恩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Foam that is too stiff for a particular type of impact will not compress sufficiently and will decelerate the impacted body too quickly
This causes too much drag in the early stages of the shock and will not compress enough to extend the distance or time of the shock

Method used

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  • Flexible polyurethane and polyurethane/polyorganosiloxane foam materials that absorb impact energy
  • Flexible polyurethane and polyurethane/polyorganosiloxane foam materials that absorb impact energy
  • Flexible polyurethane and polyurethane/polyorganosiloxane foam materials that absorb impact energy

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0166] Example 1 - Polyurethane Foam

[0167] In one embodiment, the polyurethane foam composition is obtained by mixing at room temperature: 20 grams of activated hardwood carbon (60 ml by volume) and 30 grams of hydrogel-N (120ml by volume), 24 grams of fumed silica (240ml by volume), 2 grams of hydroxyethyl cellulose (5ml by volume), and 0.1ml of colorant (Polytek) to a polyol mixture containing 2000ml of a liquid solution of polyol (Part B-Polytek company). Then, 60ml of melted and filtered black pine or pine rosin (200°C), 10ml of melted natural rubber (350°F), 10ml of melted polystyrene-block-polybutadiene-block-polystyrene Ethylene (30% by weight styrene - Aldrich Company (Aldrich)) (375 ° F), 120 ml of polybutadiene synthetic rubber, 240 ml of polysulfide polymer solution, and 3 ml of pure silk fibroin solution (Silktap Company) at room temperature was added to the above mixture and stirred in the presence of 3 grams each of sulfur, stearic acid and zinc oxide. ...

example 2-

[0168] Example 2 - Polyurethane / Organopolysiloxane Foam

[0169] In another embodiment, a polyurethane / polyorganosiloxane foam composition is produced. First, 2000 ml of a polyurethane foam mixture was prepared as described above without adding the MDI solution and without pouring the mixture into the mould. Then, 160 ml of platinum organosiloxane catalyst solution (Soma Foama Part A-smooth-On Company) was added to the mixture and stirred. A separate mixture containing 1000 ml of MDI and butyl benzyl phthalic acid solution (Polytek part A) and 80 ml of polyorganosiloxane (Soama Foama part B - Smooth-On Company) was then mixed and added to the above mixture And stir vigorously for 10 seconds. Pour the entire mixture into molds. Polymerization is immediate, exothermic and produces a rigid foam with extremely high tensile strength, toughness and resistance to compression that has far better flame retardancy than conventional polyurethane foam and polystyrene for impact absor...

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Abstract

A polyurethane foam (110), a polyurethane / polyorganosiloxane foam (112), and a polyurethane foam polyurethane / polyorganosiloxane foam composite (108) are disclosed and described herein. The materials are formed in the presence of a polymerization reaction initiator (an isoprenoid compound), and a polymerization reaction accelerator. The polyurethane foam (110) is formed from an isocyanate and a polyol. The polyurethane foam polyurethane / polyorganosiloxane foam material comprises the polyurethane foam which is cross-linked to the polyurethane backbone to a polyurethane / polyorganosiloxane foam (112).

Description

technical field [0001] The present invention relates to polyurethane foams and polyorganosiloxane foams. Foam materials can be used in impact protection devices in a variety of environments such as, but not limited to including: bumpers of vehicles, doors of vehicles, protective helmets, protective liners, groin cups, and shoe soles. Accordingly, the present invention relates generally to the fields of polymer chemistry and polyurethane / polyorganosiloxane rubber foams. Background technique [0002] It is well documented that flexible polyurethane foams are made from polyols, isocyanates, water, catalysts, and surfactants. Polyols and isocyanates are mixed to form polyurethane linkages. Water is present as blowing agent and aqueous medium. Additives, catalysts, and surfactants are used to facilitate nucleation, stabilization of foam formation during the development phase, and to improve foam properties for commercial applications. [0003] The properties of polyurethane i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/00
CPCC08G18/61C08G18/48C08G2350/00C08G2410/00C08G18/7664A42B3/125C08G2110/0066C08G2110/0058C08G2110/0008C08L75/04C08L81/04C08L53/02C08L75/08C08L83/04C08J9/14A41D13/0512A41D13/06
Inventor G·德恩
Owner G·德恩
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