合格作品 字?jǐn)?shù)19634

摘要

本文主要介紹超高密度聚氨酯軟泡模塑的制備。做一組單因素實(shí)驗(yàn)，判斷產(chǎn)品密度符合要求時(shí)水的加入量，使其密度大于100Kg/m3。選擇三因素（催化劑4501、催化劑A-33及模溫）、三水平進(jìn)行正交實(shí)驗(yàn)設(shè)計(jì)，確定合適的工藝條件，使制品表皮光滑，無(wú)開裂、閉孔等，達(dá)到質(zhì)量標(biāo)準(zhǔn)。以高密產(chǎn)品為準(zhǔn)，控制攪拌速度制兩個(gè)樣品，并測(cè)其性能。最后，分別制高密及低密兩個(gè)樣品并做降噪測(cè)試及力學(xué)性能測(cè)試，比較降噪能力及減振效果。
通過(guò)單因素實(shí)驗(yàn)可知，水加入量越低，制品密度越大；在1.3份水時(shí)即可達(dá)到密度要求。經(jīng)過(guò)正交實(shí)驗(yàn)分析可得，催化劑A-33、催化劑4501及模溫分別為0.5份、0.5份及55℃時(shí)所得制品質(zhì)量達(dá)標(biāo)。慢攪拌樣品孔徑粗大，快攪拌樣品孔徑細(xì)小。在孔徑相同情況下，高密（113 Kg/m3）比低密（45 Kg/m3）降噪能力高2.1%；減振效果高74.5%。

關(guān)鍵詞：軟泡  密度  孔徑  減振  防噪

Abstract

    This paper mainly introduces the high density polyurethane foam molding, the preparation of the soft. A series of single factor experiment, judge products meet the requirements of the density of water addition amount, make product density is more than 100 Kg/m3. Choose three factors (catalyst 4501, catalyst A-33 and mould temperature), three level of the orthogonal experiment design to determine appropriate technology conditions, the products of skin smooth, no crack, closed pore, achieve the quality standards. Products with high standard, stirring speed control system two samples, and measure its performance. Finally, the density and low respectively secret two samples and noise reduction and mechanical properties test do test, more noise reduction ability and the vibration reduction.
    Through the single factor experiment, it is known that the lower the water to join the quantity, the greater the density of the products; In a water can reach 1.3 density requirements. Through orthogonal experimental analysis, catalyst A-33, catalyst 4501 and die temperature were 0.5 share、0.5 share and 55 ℃ of the products quality. When Slow mixing sample aperture bulky, fast mixing sample small aperture. The same situation in aperture, high-density (113 Kg/m3) than the low close (45 Kg/m3) noise reduction ability; high 2.1% Vibration reduction high 74.5%.

Keywords：Soft foam  density  Aperture  Damping  Noise Canceling

目錄

摘要 I
Abstract II
目錄 III
第1章 緒論 1
1.1 前言 1
1.2 聚氨酯發(fā)展概況及行業(yè)發(fā)展 1
1.2.1 聚氨酯產(chǎn)品發(fā)展概況 1
1.2.2 行業(yè)發(fā)展 2
1.3 模塑制品的研究進(jìn)展及應(yīng)用 3
1.3.1 模塑制品的研究進(jìn)展 3
1.3.2 應(yīng)用 4
1.4 模塑制品的制備 4
1.4.1 制備 4
1.4.2 影響聚氨酯材料性能的幾種因素 6
1.5 降噪及減振 8
1.5.1 降噪 9
1.5.2 振動(dòng)的防治 10
1.6 選題依據(jù)及主要研究?jī)?nèi)容 10
1.6.1 選題依據(jù) 10
1.6.2 主要研究?jī)?nèi)容 12
第2章 實(shí)驗(yàn)部分 13
2.1 實(shí)驗(yàn)器材及藥品名稱 13
2.1.1 實(shí)驗(yàn)器材 13
2.1.2 藥品名稱 14
2.2 實(shí)驗(yàn)方案 14
2.3 超高密度聚氨酯模塑軟泡的制備 15
2.3.1 超高密度聚氨酯軟泡的制備 15
2.3.2 超高密度聚氨酯軟泡模塑的的制備 16
2.3.3 噪音測(cè)試 16
第3章 結(jié)果與討論 18
3.1 密度分析 18
3.2 助劑對(duì)于泡沫體的影響 19
3.4 正交試驗(yàn)分析 25
3.5 模塑制品實(shí)用分析 29
3.5.1 產(chǎn)品硬度的調(diào)節(jié) 29
3.5.2 產(chǎn)品孔徑的調(diào)節(jié) 30
3.5.3 產(chǎn)品實(shí)用分析 33
結(jié)論 35
致謝 36
參考文獻(xiàn) 37

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