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Low-resilience headrest foam and preparation method thereof

A foam and warhead technology, which is applied in the field of low-rebound headrest foam and its preparation, can solve the problems of high rebound force and passenger discomfort, and achieve the effects of no three wastes, good air permeability and energy saving.

Active Publication Date: 2013-10-02
NINGBO JIFENG AUTO PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the car headrest foam on the market is mainly high rebound, and its rebound rate is between 50% and 58%. Although the elasticity is good, the rebound force generated when the car bumps and vibrates is also large. not comfortable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) By weight, 20 parts of high-activity polyether, 60 parts of trihydroxy polyether, 40 parts of polymer polyol, 1.5 parts of L-580, 0.2 part of diethanolamine, 1 part of bis- (3-Dimethylaminopropyl) amino-2-propanol, 0.1 part of trimethyl hydroxyethyl ethylenediamine and 2 parts of water are poured into the premixed reactor, stirred at normal temperature to obtain the mixture, then filtered and Sealed storage;

[0022] (2) Use the above-mentioned mixture as the A component material, and use the modified MDI as the B component material; adjust the material temperature of the A and B materials to 25°C, and inject it at 10MPa according to the weight ratio of 100:50 In the headrest mold of the material, after 60 seconds, the mold is demoulded to obtain a headrest with low resilience foam.

Embodiment 2

[0024] (1) By weight, 80 parts of high-activity polyethers, 10 parts of trihydroxy polyethers, 10 parts of polymer polyols, 0.5 parts of Y-10366, 2 parts of diethanolamine, 3.5 parts of bis- (3-Dimethylaminopropyl) amino-2-propanol, 1 part of trimethyl hydroxyethyl ethylenediamine and 4 parts of water are poured into the premixed reactor, stirred at normal temperature to obtain the mixture, then filtered and Sealed storage;

[0025] (2) Use the above mixture as component A material, and use modified MDI as component B material; adjust the material temperature of A and B materials to 35°C, and inject it at 12MPa according to the weight ratio of 100:60 In the headrest mold of the material, after 90 seconds, the mold is demoulded to obtain a headrest with low resilience foam.

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PUM

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Abstract

The invention relates to a low-resilience headrest foam and a preparation method thereof. The foam comprises the following ingredients of high-activity polyether, trihydroxy polyether, polymer polyol, a foam stabilizer, an alcohol crosslinker, a composite amine catalyst and water as well as modified MDI (Diphenyl Methane Diisocyanate). The preparation method comprises the following steps of: mixing the ingredients; pouring the ingredients into a headrest mold with a face-protective material at the pressure of 10-12 MPa; and demolding after 60-90 seconds to obtain the low-resilience headrest foam. The low-resilience foam prepared by the preparation method is wide in range of index adjustment, the mold is dispensable of heating, the process is simple, no three wastes are generated, the energy consumption and auxiliary thermal equipment are saved, and thus, the production benefit is increased. The low-resilience foam foamed by using a PIP (Production Injection Packer) is applied to headrests of an automobile, the resilience within a certain range is retained, the resilience ratio is between 22% and 28%, the low-resilience foam can exert the functions of dispersion and buffer when the automobile is in high vibration and shock due to the unique energy absorption effect of the low-resilience foam, and thus, the comfort and the safety for passengers are improved.

Description

technical field [0001] The invention belongs to the field of automobile headrest foam and its preparation, in particular to a low-rebound headrest foam and a preparation method thereof. Background technique [0002] The car headrest is a kind of driving comfort configuration product and safety protection product. When a vehicle collides with the rear, the human body will fall backwards due to inertia. At this time, the pressure of vehicle acceleration or deceleration is concentrated on the fragile neck and head of the human body, and the headrest acts as a buffer to protect the human head. In addition to enhancing driving safety, car headrests also have a decorative effect. [0003] At present, the car headrest foam on the market is mainly high rebound, and its rebound rate is between 50% and 58%. Although the elasticity is good, the rebound force generated when the car bumps and vibrates is also large. Not comfortable. Contents of the invention [0004] The technical p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/76C08G18/66C08G18/48C08G18/32C08G101/00
Inventor 邬杨朝
Owner NINGBO JIFENG AUTO PARTS