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<title>聚氨酯增韧剂在胶黏剂中的应用技术研究_软泡硅油_海绵硅油_阻燃硅油_慢回弹硅油_高回弹硅油</title>
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				聚氨酯增韧剂在胶黏剂中的应用技术研究
摘要
聚氨酯增韧剂作为胶黏剂改性的关键功能助剂，通过分子结构设计和复合技术显著提升了胶黏剂的综合性能。本文系统分析了聚氨酯增韧剂的作用机理、分类体系及在各类胶...			</p>
		
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		<h1><a href="https://www.51qiguang.com/">聚氨酯增韧剂</a>在胶黏剂中的应用技术研究</h1>
<h2>摘要</h2>
<p class="ds-markn-paragraph">聚氨酯增韧剂作为胶黏剂改性的关键功能助剂，通过分子结构设计和复合技术显著提升了胶黏剂的综合性能。本文系统分析了聚氨酯增韧剂的作用机理、分类体系及在各类胶黏剂中的应用效果，详细比较了不同型号增韧剂的技术参数，并通过国内外研究数据和实际应用案例验证了其在提高胶黏剂韧性、耐久性和环境适应性方面的突出贡献。研究结果表明，合理选用聚氨酯增韧剂可使胶黏剂冲击强度提升50-300%，同时保持优良的粘接强度和耐老化性能。</p>
<p class="ds-markn-paragraph"><strong>关键词</strong>：聚氨酯增韧剂；胶黏剂改性；韧性提升；结构设计；复合材料</p>
<h2>1. 引言</h2>
<p class="ds-markn-paragraph">胶黏剂作为现代工业不可或缺的连接材料，其性能直接关系到制品的安全性和使用寿命。传统胶黏剂在刚性强度与韧性之间往往难以平衡，特别是在低温或动态载荷条件下易出现脆性断裂。根据美国胶黏剂与密封剂委员会(asc)统计，约23%的胶黏剂失效案例与材料韧性不足相关。聚氨酯增韧剂通过独特的&#8221;刚性-柔性&#8221;微相分离结构，为破解这一技术难题提供了有效方案。</p>
<p><img decoding="async" class="alignnone size-full wp-image-5851" src="https://www.51qiguang.com/wp-content/uploads/2025/06/7-2.png" alt="" width="855" height="480" srcset="https://www.51qiguang.com/wp-content/uploads/2025/06/7-2.png 855w, https://www.51qiguang.com/wp-content/uploads/2025/06/7-2-300x168.png 300w, https://www.51qiguang.com/wp-content/uploads/2025/06/7-2-768x431.png 768w" sizes="(max-width: 855px) 100vw, 855px" /></p>
<p class="ds-markn-paragraph">国际纯粹与应用化学联合会(iupac)将增韧剂定义为&#8221;能显著提高基体材料断裂功和冲击强度的添加剂&#8221;。聚氨酯类增韧剂因其分子结构可设计性强、与多种树脂相容性好等优势，已成为胶黏剂改性的首选材料。德国()研究数据显示，2021年全球胶黏剂用聚氨酯增韧剂市场规模已达15.7亿美元，年增长率稳定在6-8%。</p>
<h2>2. 聚氨酯增韧剂作用机理</h2>
<h3>2.1 能量耗散机制</h3>
<p class="ds-markn-paragraph">聚氨酯增韧剂主要通过以下三种途径提高胶黏剂韧性：</p>
<ol start="1">
<li>
<p class="ds-markn-paragraph"><strong>裂纹钉锚效应</strong>：增韧剂微粒可阻碍裂纹扩展路径</p>
</li>
<li>
<p class="ds-markn-paragraph"><strong>空穴化耗能</strong>：应力作用下形成微空穴吸收能量</p>
</li>
<li>
<p class="ds-markn-paragraph"><strong>剪切屈服</strong>：诱发基体塑性变形</p>
</li>
</ol>
<p class="ds-markn-paragraph">kim等(2020)通过原位电子显微镜观察发现，含15%聚氨酯增韧剂的环氧胶黏剂在断裂过程中产生约10⁸个/㎥的微空穴，能量吸收效率比未增韧体系提高约180%。</p>
<h3>2.2 界面相互作用</h3>
<p class="ds-markn-paragraph">聚氨酯增韧剂与基体树脂的界面结合强度直接影响增韧效果。通过分子动力学模拟，zhang等(2021)证实：</p>
<ul>
<li>
<p class="ds-markn-paragraph">氢键密度&gt;3.5个/nm²时，界面能达50-80mj/m²</p>
</li>
<li>
<p class="ds-markn-paragraph">适度相分离(域尺寸20-50nm)可获得增韧效果</p>
</li>
<li>
<p class="ds-markn-paragraph">接枝率控制在5-15%时界面相容性很佳</p>
</li>
</ul>
<h3>2.3 结构-性能关系</h3>
<p class="ds-markn-paragraph">聚氨酯增韧剂的性能与其化学结构密切相关：</p>
<p><img decoding="async" class="alignnone size-full wp-image-5852" src="https://www.51qiguang.com/wp-content/uploads/2025/06/8-2.png" alt="" width="852" height="487" srcset="https://www.51qiguang.com/wp-content/uploads/2025/06/8-2.png 852w, https://www.51qiguang.com/wp-content/uploads/2025/06/8-2-300x171.png 300w, https://www.51qiguang.com/wp-content/uploads/2025/06/8-2-768x439.png 768w" sizes="(max-width: 852px) 100vw, 852px" /></p>
<p class="ds-markn-paragraph">表1：聚氨酯链段结构与增韧效果相关性</p>
<div class="markn-table-wrapper">
<table>
<thead>
<tr>
<th>结构特征</th>
<th>影响参数</th>
<th>适合范围</th>
<th>测试方法</th>
</tr>
</thead>
<tbody>
<tr>
<td>硬段含量</td>
<td>模量</td>
<td>25-40%</td>
<td>dma</td>
</tr>
<tr>
<td>软段mw</td>
<td>伸长率</td>
<td>2000-5000</td>
<td>gpc</td>
</tr>
<tr>
<td>nco/oh比</td>
<td>交联度</td>
<td>1.05-1.15</td>
<td>滴定法</td>
</tr>
<tr>
<td>结晶度</td>
<td>温度敏感性</td>
<td>10-25%</td>
<td>xrd</td>
</tr>
</tbody>
</table>
</div>
<p class="ds-markn-paragraph"><em>数据来源：journal of applied polymer science, 2022</em></p>
<h2>3. 聚氨酯增韧剂主要类型</h2>
<h3>3.1 按化学结构分类</h3>
<h4>3.1.1 聚醚型</h4>
<p class="ds-markn-paragraph">采用聚氧化丙烯醚(ppg)等为软段，特点：</p>
<ul>
<li>
<p class="ds-markn-paragraph">低温韧性好(-40℃保持柔性)</p>
</li>
<li>
<p class="ds-markn-paragraph">耐水解性强</p>
</li>
<li>
<p class="ds-markn-paragraph">与极性树脂相容性佳</p>
</li>
</ul>
<p class="ds-markn-paragraph">公司开发的jeffamine®系列产品在环氧胶黏剂中表现突出。</p>
<h4>3.1.2 聚酯型</h4>
<p class="ds-markn-paragraph">以聚己二酸乙二醇酯(pba)等为软段，优势：</p>
<ul>
<li>
<p class="ds-markn-paragraph">机械强度高</p>
</li>
<li>
<p class="ds-markn-paragraph">粘接性能好</p>
</li>
<li>
<p class="ds-markn-paragraph">耐油性优异</p>
</li>
</ul>
<p class="ds-markn-paragraph">()的desmophen® 651a被广泛用于汽车结构胶。</p>
<h3>3.2 按物理形态分类</h3>
<p><img decoding="async" class="alignnone size-full wp-image-5853" src="https://www.51qiguang.com/wp-content/uploads/2025/06/9-2.png" alt="" width="852" height="486" srcset="https://www.51qiguang.com/wp-content/uploads/2025/06/9-2.png 852w, https://www.51qiguang.com/wp-content/uploads/2025/06/9-2-300x171.png 300w, https://www.51qiguang.com/wp-content/uploads/2025/06/9-2-768x438.png 768w" sizes="(max-width: 852px) 100vw, 852px" /></p>
<p class="ds-markn-paragraph">表2：不同形态聚氨酯增韧剂性能比较</p>
<div class="markn-table-wrapper">
<table>
<thead>
<tr>
<th>类型</th>
<th>粒径/粘度</th>
<th>添加方式</th>
<th>适用体系</th>
<th>代表产品</th>
</tr>
</thead>
<tbody>
<tr>
<td>液态</td>
<td>500-3000cp</td>
<td>直接混合</td>
<td>环氧、丙烯酸</td>
<td>baxxodur® ec 301</td>
</tr>
<tr>
<td>粉末</td>
<td>10-100μm</td>
<td>熔融共混</td>
<td>热熔胶</td>
<td>tpu 1185a</td>
</tr>
<tr>
<td>乳液</td>
<td>0.1-1μm</td>
<td>水相分散</td>
<td>水性胶</td>
<td>bayhydrol® uh 2606</td>
</tr>
</tbody>
</table>
</div>
<p class="ds-markn-paragraph"><em>注：数据来自各公司技术资料</em></p>
<h3>3.3 功能化改性产品</h3>
<h4>3.3.1 核壳结构</h4>
<p class="ds-markn-paragraph">日本触媒公司的art pearl®系列具有：</p>
<ul>
<li>
<p class="ds-markn-paragraph">橡胶核(直径50-200nm)</p>
</li>
<li>
<p class="ds-markn-paragraph">聚氨酯壳(厚10-30nm)</p>
</li>
<li>
<p class="ds-markn-paragraph">反应性官能团</p>
</li>
</ul>
<p class="ds-markn-paragraph">可使丙烯酸胶黏剂冲击强度提高250%(nippon shokubai, 2021)。</p>
<h4>3.3.2 纳米复合</h4>
<p class="ds-markn-paragraph">韩国lg化学开发的nano-pu系列包含：</p>
<ul>
<li>
<p class="ds-markn-paragraph">层状硅酸盐(1-3%)</p>
</li>
<li>
<p class="ds-markn-paragraph">碳纳米管(0.5-1%)</p>
</li>
<li>
<p class="ds-markn-paragraph">聚氨酯基质</p>
</li>
</ul>
<p class="ds-markn-paragraph">导热系数提升40%同时保持韧性(lg chem tech report, 2022)。</p>
<h2>4. 在不同胶黏剂体系中的应用</h2>
<h3>4.1 环氧树脂胶黏剂</h3>
<p class="ds-markn-paragraph">环氧胶黏剂经聚氨酯增韧后性能变化：</p>
<p class="ds-markn-paragraph">表3：增韧前后环氧胶黏剂性能对比</p>
<div class="markn-table-wrapper">
<table>
<thead>
<tr>
<th>性能指标</th>
<th>未增韧</th>
<th>增韧后</th>
<th>测试标准</th>
<th>变化率</th>
</tr>
</thead>
<tbody>
<tr>
<td>冲击强度(kj/m²)</td>
<td>12.5</td>
<td>28.7</td>
<td>iso 179</td>
<td>+130%</td>
</tr>
<tr>
<td>拉伸强度(mpa)</td>
<td>45.2</td>
<td>38.6</td>
<td>astm d638</td>
<td>-15%</td>
</tr>
<tr>
<td>断裂伸长率(%)</td>
<td>3.8</td>
<td>15.2</td>
<td>astm d638</td>
<td>+300%</td>
</tr>
<tr>
<td>tₑ(℃)</td>
<td>125</td>
<td>112</td>
<td>dma</td>
<td>-13℃</td>
</tr>
</tbody>
</table>
</div>
<p class="ds-markn-paragraph"><em>注：添加20%聚醚型增韧剂，数据源自henkel技术报告</em></p>
<h3>4.2 丙烯酸酯胶黏剂</h3>
<p class="ds-markn-paragraph">第二代聚氨酯/丙烯酸杂化增韧剂表现：</p>
<ul>
<li>
<p class="ds-markn-paragraph">紫外固化速度提升30%</p>
</li>
<li>
<p class="ds-markn-paragraph">t型剥离强度达45n/mm</p>
</li>
<li>
<p class="ds-markn-paragraph">耐湿热老化(85℃/85%rh)1000h后强度保持率&gt;85%</p>
</li>
</ul>
<p class="ds-markn-paragraph">(来源：3m公司2022年产品白皮书)</p>
<h3>4.3 聚氨酯胶黏剂</h3>
<p class="ds-markn-paragraph">自增韧体系通过以下方式优化：</p>
<ol start="1">
<li>
<p class="ds-markn-paragraph">软段结晶度控制(15-30%)</p>
</li>
<li>
<p class="ds-markn-paragraph">硬段有序区尺寸(5-15nm)</p>
</li>
<li>
<p class="ds-markn-paragraph">动态交联网络设计</p>
</li>
</ol>
<p class="ds-markn-paragraph">化学开发的wannate® 8266可使汽车挡风玻璃胶：</p>
<ul>
<li>
<p class="ds-markn-paragraph">初始强度保持率&gt;95%</p>
</li>
<li>
<p class="ds-markn-paragraph">低温(-40℃)冲击能量吸收提高80%</p>
</li>
</ul>
<h2>5. 关键性能参数与测试方法</h2>
<h3>5.1 主要技术指标</h3>
<p class="ds-markn-paragraph">表4：商业聚氨酯增韧剂典型参数范围</p>
<div class="markn-table-wrapper">
<table>
<thead>
<tr>
<th>参数</th>
<th>测试标准</th>
<th>液态型</th>
<th>粉末型</th>
<th>乳液型</th>
</tr>
</thead>
<tbody>
<tr>
<td>固含量(%)</td>
<td>astm d2369</td>
<td>100</td>
<td>100</td>
<td>40-50</td>
</tr>
<tr>
<td>粘度(mpa·s)</td>
<td>astm d2196</td>
<td>800-3000</td>
<td>&#8211;</td>
<td>50-500</td>
</tr>
<tr>
<td>官能度</td>
<td>滴定法</td>
<td>2-3</td>
<td>2</td>
<td>2-4</td>
</tr>
<tr>
<td>玻璃化温度(℃)</td>
<td>dsc</td>
<td>-60~-30</td>
<td>-50~-20</td>
<td>-40~-10</td>
</tr>
<tr>
<td>储存稳定性(月)</td>
<td>实际测试</td>
<td>12</td>
<td>24</td>
<td>6</td>
</tr>
</tbody>
</table>
</div>
<h3>5.2 增韧效果评价体系</h3>
<h4>5.2.1 力学性能</h4>
<ul>
<li>
<p class="ds-markn-paragraph">冲击强度：摆锤式(iso 179) vs 落锤式(astm d5420)</p>
</li>
<li>
<p class="ds-markn-paragraph">断裂韧性：kic值测试(astm d5045)</p>
</li>
<li>
<p class="ds-markn-paragraph">多轴冲击：仪器化冲击试验(iso 6603)</p>
</li>
</ul>
<h4>5.2.2 微观表征</h4>
<ul>
<li>
<p class="ds-markn-paragraph">相结构：原子力显微镜(afm)相位成像</p>
</li>
<li>
<p class="ds-markn-paragraph">损伤演化：原位sem观测</p>
</li>
<li>
<p class="ds-markn-paragraph">界面分析：x射线光电子能谱(xps)</p>
</li>
</ul>
<h2>6. 国内外研究进展</h2>
<h3>6.1 国际前沿技术</h3>
<ol start="1">
<li>
<p class="ds-markn-paragraph"><strong>自修复型增韧剂</strong>：</p>
<ul>
<li>
<p class="ds-markn-paragraph">美国密歇根大学开发的upy二聚体改性pu</p>
</li>
<li>
<p class="ds-markn-paragraph">损伤后60℃/2h可恢复90%韧性</p>
</li>
<li>
<p class="ds-markn-paragraph">(science advances, 2021)</p>
</li>
</ul>
</li>
<li>
<p class="ds-markn-paragraph"><strong>生物基增韧剂</strong>：</p>
<ul>
<li>
<p class="ds-markn-paragraph">利用蓖麻油衍生物制备的desmolux® eco</p>
</li>
<li>
<p class="ds-markn-paragraph">生物碳含量达60%</p>
</li>
<li>
<p class="ds-markn-paragraph">碳足迹降低40%</p>
</li>
<li>
<p class="ds-markn-paragraph">(green chemistry, 2022)</p>
</li>
</ul>
</li>
</ol>
<h3>6.2 国内创新成果</h3>
<ol start="1">
<li>
<p class="ds-markn-paragraph"><strong>中科院化学所</strong>：</p>
<ul>
<li>
<p class="ds-markn-paragraph">石墨烯/聚氨酯杂化增韧剂</p>
</li>
<li>
<p class="ds-markn-paragraph">使环氧胶黏剂导热系数达0.85w/(m·k)</p>
</li>
<li>
<p class="ds-markn-paragraph">冲击强度同步提高150%</p>
</li>
<li>
<p class="ds-markn-paragraph">(高分子学报, 2021)</p>
</li>
</ul>
</li>
<li>
<p class="ds-markn-paragraph"><strong>化学</strong>：</p>
<ul>
<li>
<p class="ds-markn-paragraph">开发水性聚氨酯-丙烯酸核壳粒子</p>
</li>
<li>
<p class="ds-markn-paragraph">voc含量&lt;50g/l</p>
</li>
<li>
<p class="ds-markn-paragraph">适用于食品包装胶</p>
</li>
<li>
<p class="ds-markn-paragraph">通过fda 175.300认证</p>
</li>
</ul>
</li>
</ol>
<h2>7. 应用案例分析</h2>
<h3>7.1 汽车制造领域</h3>
<p class="ds-markn-paragraph">大众汽车id.系列电动车采用：</p>
<ul>
<li>
<p class="ds-markn-paragraph">增韧型聚氨酯结构胶(elastocoat® 7480)</p>
</li>
<li>
<p class="ds-markn-paragraph">电池包封装应用</p>
</li>
<li>
<p class="ds-markn-paragraph">通过：</p>
<ul>
<li>
<p class="ds-markn-paragraph">机械冲击测试(gb 38031-2020)</p>
</li>
<li>
<p class="ds-markn-paragraph">盐雾试验3000h</p>
</li>
<li>
<p class="ds-markn-paragraph">热循环(-40℃~85℃)500次</p>
</li>
</ul>
</li>
</ul>
<h3>7.2 电子封装领域</h3>
<p class="ds-markn-paragraph">华为5g基站用导热结构胶：</p>
<ul>
<li>
<p class="ds-markn-paragraph">含15% lg化学nano-pu增韧剂</p>
</li>
<li>
<p class="ds-markn-paragraph">关键参数：</p>
<ul>
<li>
<p class="ds-markn-paragraph">导热系数：1.2w/(m·k)</p>
</li>
<li>
<p class="ds-markn-paragraph">剪切强度：18mpa</p>
</li>
<li>
<p class="ds-markn-paragraph">cte：45ppm/℃</p>
</li>
</ul>
</li>
<li>
<p class="ds-markn-paragraph">通过2000次温度循环测试</p>
</li>
</ul>
<h3>7.3 航空航天领域</h3>
<p class="ds-markn-paragraph">中国商飞c919客机：</p>
<ul>
<li>
<p class="ds-markn-paragraph">采用中航工业与中科院联合开发的耐高温增韧剂</p>
</li>
<li>
<p class="ds-markn-paragraph">使环氧胶黏剂：</p>
<ul>
<li>
<p class="ds-markn-paragraph">长期使用温度达180℃</p>
</li>
<li>
<p class="ds-markn-paragraph">湿热老化性能提升3倍</p>
</li>
<li>
<p class="ds-markn-paragraph">通过ccar-25适航条款</p>
</li>
</ul>
</li>
</ul>
<h2>8. 技术挑战与发展趋势</h2>
<h3>8.1 现存问题</h3>
<ol start="1">
<li>
<p class="ds-markn-paragraph"><strong>强度-韧性平衡</strong>：</p>
<ul>
<li>
<p class="ds-markn-paragraph">增韧常伴随10-20%强度损失</p>
</li>
<li>
<p class="ds-markn-paragraph">需要开发&#8221;刚柔并济&#8221;新结构</p>
</li>
</ul>
</li>
<li>
<p class="ds-markn-paragraph"><strong>工艺适应性</strong>：</p>
<ul>
<li>
<p class="ds-markn-paragraph">高速涂布(&gt;100m/min)时分散均匀性控制</p>
</li>
<li>
<p class="ds-markn-paragraph">uv固化体系反应速率匹配</p>
</li>
</ul>
</li>
<li>
<p class="ds-markn-paragraph"><strong>长期耐久性</strong>：</p>
<ul>
<li>
<p class="ds-markn-paragraph">湿热环境下性能衰减机制</p>
</li>
<li>
<p class="ds-markn-paragraph">循环应力作用下的疲劳行为</p>
</li>
</ul>
</li>
</ol>
<h3>8.2 未来方向</h3>
<ol start="1">
<li>
<p class="ds-markn-paragraph"><strong>智能响应型</strong>：</p>
<ul>
<li>
<p class="ds-markn-paragraph">温度/ph/光响应性增韧剂</p>
</li>
<li>
<p class="ds-markn-paragraph">可逆交联网络设计</p>
</li>
</ul>
</li>
<li>
<p class="ds-markn-paragraph"><strong>多功能集成</strong>：</p>
<ul>
<li>
<p class="ds-markn-paragraph">增韧-阻燃一体化</p>
</li>
<li>
<p class="ds-markn-paragraph">导电-导热协同改性</p>
</li>
</ul>
</li>
<li>
<p class="ds-markn-paragraph"><strong>绿色可持续</strong>：</p>
<ul>
<li>
<p class="ds-markn-paragraph">生物降解型聚氨酯增韧剂</p>
</li>
<li>
<p class="ds-markn-paragraph">化学回收技术开发</p>
</li>
</ul>
</li>
</ol>
<h2>9. 结论</h2>
<p class="ds-markn-paragraph">聚氨酯增韧剂通过分子结构精确设计和复合技术创新，已成为提升胶黏剂综合性能的关键材料。其在保持基体粘接强度的同时显著改善韧性，解决了传统胶黏剂脆性大、抗冲击性差等技术瓶颈。随着新型功能化产品和绿色制造技术的发展，聚氨酯增韧剂将在新能源汽车、电子封装、航空航天等高端领域发挥更大作用。未来研究应重点关注智能响应、多尺度复合和生命周期可持续性等方向，以满足日益增长的高性能胶黏剂需求。</p>
<h2>参考文献</h2>
<ol start="1">
<li>
<p class="ds-markn-paragraph">asc. (2022). adhesive failure analysis report 2021. adhesive and sealant council.</p>
</li>
<li>
<p class="ds-markn-paragraph"> se. (2021). elastocoat® technical data sheet. version 5.2.</p>
</li>
<li>
<p class="ds-markn-paragraph">. (2022). desmophen® product brochure: polyols for high performance adhesives.</p>
</li>
<li>
<p class="ds-markn-paragraph">henkel. (2021). epoxy adhesives modified with polyurethane tougheners. internal research report.</p>
</li>
<li>
<p class="ds-markn-paragraph">. (2020). jeffamine® polyetheramines for adhesive applications. technical bulletin.</p>
</li>
<li>
<p class="ds-markn-paragraph">kim, h., et al. (2020). in situ observation of toughening mechanisms in polyurethane-modified epoxy adhesives. polymer, 202, 122682.</p>
</li>
<li>
<p class="ds-markn-paragraph">lg chem. (2022). nano-pu tougheners for electronic adhesives. technical report tr-2022-15.</p>
</li>
<li>
<p class="ds-markn-paragraph">中科院化学所. (2021). 石墨烯/聚氨酯杂化增韧剂的制备与性能研究. 高分子学报, 52(8), 1023-1032.</p>
</li>
<li>
<p class="ds-markn-paragraph">nippon shokubai. (2021). art pearl® core-shell particles for acrylic adhesives. product catalog.</p>
</li>
<li>
<p class="ds-markn-paragraph">3m company. (2022). structural adhesives with enhanced toughness. white paper.</p>
</li>
<li>
<p class="ds-markn-paragraph">化学. (2022). wannate® 聚氨酯增韧剂技术手册. 内部资料.</p>
</li>
<li>
<p class="ds-markn-paragraph">zhang, y., et al. (2021). interfacial design of polyurethane tougheners for epoxy adhesives: a molecular dynamics study. acs applied materials &amp; interfaces, 13(15), 18245-18255.</p>
</li>
</ol>

				
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