反应注射的介绍

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<H3 ><FONT size=5>这时候，您可以选择RIM<FONT face="Times New Roman"> </FONT></FONT></H3>
<P><FONT size=3>RIM<FONT face=宋体>是种非常灵活的塑料成型工艺，尤其适用于以下情况： </FONT></FONT></P>
<UL type=disc>
<LI class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; tab-stops: list 36.0pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l0 level1 lfo2">零件面积大于<FONT face="Times New Roman">0.22 m<SUP>2</SUP> </FONT></LI>
<LI class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; tab-stops: list 36.0pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l0 level1 lfo2">零件质量超过<FONT face="Times New Roman">1 kg </FONT></LI>
<LI class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; tab-stops: list 36.0pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l0 level1 lfo2">同时存在厚壁和薄壁<FONT face="Times New Roman"> </FONT></LI>
<LI class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; tab-stops: list 36.0pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l0 level1 lfo2">零件表面有很高的外观或结构要求<FONT face="Times New Roman"> </FONT></LI>
<LI class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; tab-stops: list 36.0pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l0 level1 lfo2">零件要求有很高的硬度且要有很好的抗冲击性<FONT face="Times New Roman"> </FONT></LI></UL>
<H3 ><p><FONT face="Times New Roman" size=5> </FONT></p></H3>
<H3 ><FONT size=5>初识RIM</FONT><p></p></H3>
<P><FONT size=3>RIM<FONT face=宋体>全称是</FONT>Reaction Injection Molding<FONT face=宋体>，中文是反应注射。它可以：<p></p></FONT></FONT></P>
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<LI class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; tab-stops: list 36.0pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l1 level1 lfo1">降低您的模具成本 <p></p></LI>
<LI class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; tab-stops: list 36.0pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l1 level1 lfo1">设计更加自由 <p></p></LI>
<LI class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; tab-stops: list 36.0pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l1 level1 lfo1">更高的比强度<p></p></LI>
<LI class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; tab-stops: list 36.0pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l1 level1 lfo1">改善或减少二次加工<p></p></LI>
<LI class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; tab-stops: list 36.0pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l1 level1 lfo1">没有缩痕 <p></p></LI>
<LI class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; tab-stops: list 36.0pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l1 level1 lfo1">更轻巧 <p></p></LI>
<LI class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; tab-stops: list 36.0pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l1 level1 lfo1">广泛的物理特性 <p></p></LI></UL>
<P  align=left>除了高强度，低重量，在物理性能方面，它强度高，重量低，耐热，绝热，尺寸稳定，并且抗冲击性良好。在化学性能方面，它耐腐蚀，耐候性良好。<p></p></P>
<P  align=left>比起热塑性塑料的注塑成型，反应注射成型温度低，注射压力小，消耗的能量要少，而且使用的设备和场地也少，因而更加经济。比起其它的热固性塑料成型，反应注射的自动化程化程度更高。<p></p></P>

lydia0101

RIM的原理
<P>反应注射成型的材料一般为聚氨酯树脂、不饱和聚酯树脂和环氧树脂，目前应用最多的是聚氨酯树脂。</P>
<P>将两种反应原材料(聚氨酯组分和树脂混合物）分别放入有搅拌器可控温度的进料罐中，通过精确计量，在高压下进入混合头。注射开始时，混合头的阀门打开，反应物在一定压力下进入混合头的混合室，高速激烈碰撞，然后在接近大气压的压力下流入模具，经放热化学反应，在模具中形成聚氨酯聚合体。注射和成型周期决定于零件的大小以及所用的聚氨酯体系。</P>

lydia0101

图片怎么上传呀。偶弄不了呀。

lydia0101

<H3 13pt 0cm">RIM<FONT size=5>的内在优势<p></p></FONT></H3>
<P 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" align=left><B>1.</B><FONT face="Times New Roman"> </FONT><B normal">可以生产大尺</B><B>寸零件</B><B><p></p></B></P>
<P 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" align=left>成型零件的大小取决于聚氨酯组分的反应固化速度以及反应注射机的注射流量。聚氨酯组分有着很好的流动性，即使很大零件也容易充模。<p></p></P>
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<P 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" align=left><B>2. </B><B normal">制品镶嵌件工艺简便</B><B><p></p></B></P>
<P 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" align=left>先将镶嵌件放入模具中，成型过程中就完成了嵌入件的封装。钢或铝合金的结构框架，窗户玻璃，电子传感器等都可以用<FONT face="Times New Roman">RIM</FONT>工艺封装。<p></p></P>
<P 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" align=left><p><FONT face="Times New Roman"> </FONT></p></P>
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<P 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" align=left><B>3. </B><B>可以制作不同壁厚的零件</B><B><p></p></B></P>
<P 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" align=left><FONT face="Times New Roman">RIM</FONT>的特殊性工艺决定了可以灵活的设计零件，壁厚的可变范围相当大，同一个模塑件的横截面可以从<st1:chmetcnv UnitName="毫米" SourceValue="6" HasSpace="False" Negative="False" NumberType="1" TCSC="0">6毫米</st1:chmetcnv>到<st1:chmetcnv UnitName="毫米" SourceValue="28" HasSpace="False" Negative="False" NumberType="1" TCSC="0">28毫米</st1:chmetcnv>间变化。<BR> <p></p></P>
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<P 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" align=left><B>4.</B><B> </B><B normal">制品表面质量好</B><B><p></p></B></P>
<P 0cm 0cm 0pt; TEXT-INDENT: 15.75pt; TEXT-ALIGN: left; mso-pagination: widow-orphan; mso-char-indent-count: 1.5" align=left>可以生产出表面为A级曲面的零件。<p></p></P>
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<P 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" align=left><B>5. </B><B>模内漆涂装</B><B><p></p></B></P>
<P 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" align=left>可以在注射前将模内漆涂在模具中，模内漆在成型过程中和聚氨酯材料结合为一体，从而在模具内完成了零件的装饰。这样就降低了二次喷漆的费用。<BR line-break" clear=all><p></p></P>
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<P 0cm 0cm 12pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" align=left><B>6.</B><B>模具成本低</B><B><BR></B>成型压力低（<FONT face="Times New Roman">0.35</FONT>～<FONT face="Times New Roman">0.7MPa</FONT>），反应成型时，无模压应力，产品在模内发热量小。模具可以选择价格比较低的模具材料，而不一定是p-20或是硬化钢。材料范围从机加工铝，铸铝到铸锌，镀镍，甚至一些塑料复合材料，十分广泛。<p></p></P>

lydia0101

<H3 13pt 0cm"><FONT size=5>反应注射与吸塑的特点比较<p></p></FONT></H3>
<P 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan" align=left><p> </p></P>
<TABLE 414.75pt; mso-cellspacing: 0cm; mso-padding-alt: 0cm 0cm 0cm 0cm" cellSpacing=0 cellPadding=0 width=553 border=0>

<TR 16.5pt; mso-yfti-irow: 0">
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<P 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>比较项目<p></p></P></TD>
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<P 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>反应注射部件<p></p></P></TD>
<TD black 1pt solid; PADDING-RIGHT: 0cm; BORDER-TOP: black 1pt solid; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: black 1pt solid; WIDTH: 213.75pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black 1pt solid; HEIGHT: 16.5pt; BACKGROUND-COLOR: transparent; mso-border-alt: solid black .75pt" width=285>
<P 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>吸塑及板材粘接部件<p></p></P></TD></TR>
<TR 41.15pt; mso-yfti-irow: 1">
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<P 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>产品设计<p></p></P></TD>
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<P 0cm 0cm 0pt">设计师可充分发挥想象空间，产品造型独特，极大提升产品档次。<p></p></P></TD>
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<P 0cm 0cm 0pt">产品设计受制造工艺限制，很难有好的作品。<p></p></P></TD></TR>
<TR 45.25pt; mso-yfti-irow: 2">
<TD black 1pt solid; PADDING-RIGHT: 0cm; BORDER-TOP: black 1pt solid; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: black 1pt solid; WIDTH: 47.85pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black 1pt solid; HEIGHT: 45.25pt; BACKGROUND-COLOR: transparent; mso-border-alt: solid black .75pt" width=64>
<P 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>产品外观<p></p></P></TD>
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<P 0cm 0cm 0pt">产品外观平顺光滑，可达到<FONT face="Times New Roman">A</FONT>级曲面。<p></p></P></TD>
<TD black 1pt solid; PADDING-RIGHT: 0cm; BORDER-TOP: black 1pt solid; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: black 1pt solid; WIDTH: 213.75pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black 1pt solid; HEIGHT: 45.25pt; BACKGROUND-COLOR: transparent; mso-border-alt: solid black .75pt" width=285>
<P 0cm 0cm 0pt">产品表面的面线光顺度较差，板材粘接产品，部件完全由平面或单曲面组成，外型呆板。<p></p></P></TD></TR>
<TR 52.95pt; mso-yfti-irow: 3">
<TD black 1pt solid; PADDING-RIGHT: 0cm; BORDER-TOP: black 1pt solid; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: black 1pt solid; WIDTH: 47.85pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black 1pt solid; HEIGHT: 52.95pt; BACKGROUND-COLOR: transparent; mso-border-alt: solid black .75pt" width=64>
<P 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>产品装饰线<p></p></P></TD>
<TD black 1pt solid; PADDING-RIGHT: 0cm; BORDER-TOP: black 1pt solid; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: black 1pt solid; WIDTH: 153.15pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black 1pt solid; HEIGHT: 52.95pt; BACKGROUND-COLOR: transparent; mso-border-alt: solid black .75pt" width=204>
<P 0cm 0cm 0pt">产品装饰线可体现产品的独特设计理念。使曲面更富有层次，和更好的透视效果。<p></p></P></TD>
<TD black 1pt solid; PADDING-RIGHT: 0cm; BORDER-TOP: black 1pt solid; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: black 1pt solid; WIDTH: 213.75pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black 1pt solid; HEIGHT: 52.95pt; BACKGROUND-COLOR: transparent; mso-border-alt: solid black .75pt" width=285>
<P 0cm 0cm 0pt">受工艺限制，无法制作装饰线。<p></p></P></TD></TR>
<TR 84.1pt; mso-yfti-irow: 4">
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<P 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>产品结构<p></p></P></TD>
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<P 0cm 0cm 0pt">产品外部结构与内部结构可整体制作，提高了产品的品质可靠性，同一部件在不同部位可进行不同厚度的设计。<p></p></P></TD>
<TD black 1pt solid; PADDING-RIGHT: 0cm; BORDER-TOP: black 1pt solid; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: black 1pt solid; WIDTH: 213.75pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black 1pt solid; HEIGHT: 84.1pt; BACKGROUND-COLOR: transparent; mso-border-alt: solid black .75pt" width=285>
<P 0cm 0cm 0pt">产品存在大量的粘接部位，部件整体性差，存在质量隐患。<p></p></P></TD></TR>
<TR 45.55pt; mso-yfti-irow: 5">
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<P 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>产品尺寸<p></p></P></TD>
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<P 0cm 0cm 0pt">该产品由模具制造，产品尺寸稳定且准确。<p></p></P></TD>
<TD black 1pt solid; PADDING-RIGHT: 0cm; BORDER-TOP: black 1pt solid; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: black 1pt solid; WIDTH: 213.75pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black 1pt solid; HEIGHT: 45.55pt; BACKGROUND-COLOR: transparent; mso-border-alt: solid black .75pt" width=285>
<P 0cm 0cm 0pt">产品由工人全手工制作，产品尺寸完全靠人工控制，零件尺寸很难达到同一标准。<p></p></P></TD></TR>
<TR 45.45pt; mso-yfti-irow: 6">
<TD black 1pt solid; PADDING-RIGHT: 0cm; BORDER-TOP: black 1pt solid; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: black 1pt solid; WIDTH: 47.85pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black 1pt solid; HEIGHT: 45.45pt; BACKGROUND-COLOR: transparent; mso-border-alt: solid black .75pt" width=64>
<P 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>产品型位<p></p></P></TD>
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<P 0cm 0cm 0pt">稳定且准确<p></p></P></TD>
<TD black 1pt solid; PADDING-RIGHT: 0cm; BORDER-TOP: black 1pt solid; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: black 1pt solid; WIDTH: 213.75pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black 1pt solid; HEIGHT: 45.45pt; BACKGROUND-COLOR: transparent; mso-border-alt: solid black .75pt" width=285>
<P 0cm 0cm 0pt">各部件不统一，无互换性，为产品安装及维护带来不少后续问题。<p></p></P></TD></TR>
<TR 36.15pt; mso-yfti-irow: 7; mso-yfti-lastrow: yes">
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<P 0cm 0cm 0pt; TEXT-ALIGN: center" align=center>模具制造<p></p></P></TD>
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<P 0cm 0cm 0pt">需要模具<p></p></P></TD>
<TD black 1pt solid; PADDING-RIGHT: 0cm; BORDER-TOP: black 1pt solid; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: black 1pt solid; WIDTH: 213.75pt; PADDING-TOP: 0cm; BORDER-BOTTOM: black 1pt solid; HEIGHT: 36.15pt; BACKGROUND-COLOR: transparent; mso-border-alt: solid black .75pt" width=285>
<P 0cm 0cm 0pt">大多产品不需要模具<p></p></P></TD></TR></TABLE>

hukuiyong_02

GOOD

hehexiao

长见识呵!