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什么叫化纤丝的回弹性？

2022-10-18 11:29:15

<h1 class="rich_media_title " id="activity-name" style="margin-top: 0px; margin-bottom: 14px; outline: 0px; font-size: 22px; line-height: 1.4; color: rgb(34, 34, 34); font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; letter-spacing: 0.544px;"><p style="margin-bottom: 0em; outline: 0px; max-width: 100%; clear: both; min-height: 1em; font-size: 17px; letter-spacing: 0.544px; text-align: center; visibility: visible; overflow-wrap: break-word !important;"><img src="https://dayaotex-edu.fsh.bcebos.com/v1/dayaotex-edu/%E5%BE%AE%E4%BF%A1%E5%9B%BE%E7%89%87_20221018112658.jpg?authorization=bce-auth-v1%2F59b7a26546d74b64bfd056b483465817%2F2022-10-18T03%3A28%3A55Z%2F-1%2F%2Fcd02ca75d4ef1da1eeea876915b27816b29b75d3b3b9eed714d0a1147c2b8a92" style="width: 660px;" data-filename=""><br></p><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; visibility: visible; overflow-wrap: break-word !important;"><section style="margin: 0px; padding: 10px; outline: 0px; max-width: 100%; color: rgb(62, 62, 62); font-size: 16px; line-height: 25.6px; display: inline-block; width: 670px; border-width: 2px; border-style: dashed; border-color: transparent; background-color: rgb(239, 239, 239); visibility: visible; overflow-wrap: break-word !important;"><section style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; overflow-wrap: break-word !important;"><section style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; overflow-wrap: break-word !important;"><p style="margin-right: 1em; margin-bottom: 0px; margin-left: 1em; outline: 0px; max-width: 100%; clear: both; min-height: 1em; line-height: 1.75em; visibility: visible; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(127, 127, 127); font-size: 15px; visibility: visible; overflow-wrap: break-word !important;">化纤丝的回弹性，是指样丝加一定负荷，拉伸到一定长度后，保持一定时间，释去负荷，在短时间内(3min)，形变立即回复的能力衡量化纤丝回弹性，一般用回弹率表示。目前有两种方法，一种是定负荷回弹率，另一种是定伸长回弹率。</span></p></section></section></section><br style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; overflow-wrap: break-word !important;"></section><section data-mpa-template-id="738544" data-mpa-color="null" data-mpa-category="fav" style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; visibility: visible; overflow-wrap: break-word !important;"><section style="margin: 0px 8px 5px; padding: 0px; outline: 0px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-size: 16px; line-height: 1.75em; visibility: visible; overflow-wrap: break-word !important;"><br style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; overflow-wrap: break-word !important;"></section></section><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; text-indent: 2em; visibility: visible; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; font-size: 15px; visibility: visible; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(79, 97, 40); visibility: visible; overflow-wrap: break-word !important;"><strong style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; overflow-wrap: break-word !important;">(1)定负荷回弹率</strong>：</span><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(63, 63, 63); visibility: visible; overflow-wrap: break-word !important;">此法一般是织厂土办法，方法简便，测定数值仅做相对比较(图11)。取一根样丝，上端固定做好标记，下端加预张力0.05cN/dtex，保持丝条挺直，然后由上端标记处向下50cm处做好标记，再加一定负荷0.15cN/dtex，保持一定时间(3～5min)，然后除去负荷，使样丝自然回缩，待30s后，在样丝下端加上原来的预张力，再测量样丝回复长度，按下列公式进行计算：</span></span></section><p style="margin-bottom: 0px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; font-size: 17px; letter-spacing: 0.544px; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; text-align: center; visibility: visible; overflow-wrap: break-word !important;"><br style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; overflow-wrap: break-word !important;"></p><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; text-indent: 2em; visibility: visible; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(63, 63, 63); font-size: 15px; visibility: visible; overflow-wrap: break-word !important;">定符合回弹率=▲(L'/L)*100%=(L1-L2)/(L1-L0)*100%</span></section><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; text-indent: 2em; visibility: visible; overflow-wrap: break-word !important;"><br style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; overflow-wrap: break-word !important;"></section><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; text-indent: 2em; visibility: visible; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(63, 63, 63); font-size: 15px; visibility: visible; overflow-wrap: break-word !important;">式中:L1——样丝加负荷后长度;</span></section><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; text-indent: 2em; visibility: visible; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(63, 63, 63); font-size: 15px; visibility: visible; overflow-wrap: break-word !important;">        L2——样丝释去负荷后的回复长度</span></section><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; text-indent: 2em; visibility: visible; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(63, 63, 63); font-size: 15px; visibility: visible; overflow-wrap: break-word !important;">        Lo——样丝原长</span></section><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; text-indent: 2em; visibility: visible; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(63, 63, 63); font-size: 15px; visibility: visible; overflow-wrap: break-word !important;">       ▲L'——样丝形变后的剩余长度</span></section><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; text-indent: 2em; visibility: visible; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(63, 63, 63); font-size: 15px; visibility: visible; overflow-wrap: break-word !important;">       ▲L——样丝加负荷后长度与样丝原长之差的形变长度。</span></section><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; visibility: visible; overflow-wrap: break-word !important;"><br style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; overflow-wrap: break-word !important;"></section><img src="https://dayaotex-edu.fsh.bcebos.com/v1/dayaotex-edu/%E5%BE%AE%E4%BF%A1%E5%9B%BE%E7%89%87_20221018112706.jpg?authorization=bce-auth-v1%2F59b7a26546d74b64bfd056b483465817%2F2022-10-18T03%3A29%3A09Z%2F-1%2F%2F50b99f5cbbbb0266d12cb0382b536e5b248d6e991c5e7912c7452bf1b02b0541" style="width: 660px;" data-filename=""><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; text-align: center; visibility: visible; overflow-wrap: break-word !important;"><br></section><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; text-align: center; visibility: visible; overflow-wrap: break-word !important;"><br style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; overflow-wrap: break-word !important;"></section><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; text-indent: 2em; visibility: visible; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; font-size: 15px; visibility: visible; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(79, 97, 40); visibility: visible; overflow-wrap: break-word !important;"><strong style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; visibility: visible; overflow-wrap: break-word !important;">(2)定伸长回弹率：</strong></span><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(63, 63, 63); visibility: visible; overflow-wrap: break-word !important;">定伸长回弹率即为试样定伸长后的长度主回复后的长度之差，对试样定伸长后的长度与初始长度之差的了分率。</span></span></section><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; text-indent: 2em; visibility: visible; overflow-wrap: break-word !important;"><br style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; overflow-wrap: break-word !important;"></section><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; text-indent: 2em; visibility: visible; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(63, 63, 63); font-size: 15px; visibility: visible; overflow-wrap: break-word !important;">目前较多用定伸长回弹率来测试化纤丝的回弹性能。定伸长巨弹率测试一般在单丝强力机上进行。具体测试方法如下：</span></section><p style="margin-bottom: 0px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; font-size: 17px; letter-spacing: 0.544px; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; text-align: center; overflow-wrap: break-word !important;"><br style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; overflow-wrap: break-word !important;"></p><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; text-indent: 2em; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(63, 63, 63); font-size: 15px; overflow-wrap: break-word !important;">取60cm本丝，上端固定在强力机的上夹头中，下端挂上预张力0.05cN/dtex后，夹紧下夹头，并在夹头钳口处做一标记M,然后以强力机最慢一挡亚度下降，当下夹持器降到使其伸长的原样丝伸长为3%或5%时，立艮停座下降，并保持1～3min，然后将下夹持器回升到原位，放松下夹持器，待样丝自然回缩30s后，再在样丝下端加上原来的预张力，并夹下夹持器，在下夹持器钳口处再做标记M'，打开下夹持器，测量M与M‘之间的距离，即样丝的剩余值长度，然后计算：</span></section><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; text-indent: 2em; overflow-wrap: break-word !important;"><br style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; overflow-wrap: break-word !important;"></section><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; text-indent: 2em; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(63, 63, 63); font-size: 15px; overflow-wrap: break-word !important;">伸长弹性率=(L1-L2)/(L1-L0)*100%</span></section><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; text-indent: 2em; overflow-wrap: break-word !important;"><br style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; overflow-wrap: break-word !important;"></section><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; text-indent: 2em; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(63, 63, 63); font-size: 15px; overflow-wrap: break-word !important;">式中:L0——试样原夹持长度(上夹持器到下夹持器M标记处之间距离);</span></section><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; text-indent: 2em; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(63, 63, 63); font-size: 15px; overflow-wrap: break-word !important;">        L1——试样按规定伸长率伸长后的长度;</span></section><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; text-indent: 2em; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(63, 63, 63); font-size: 15px; overflow-wrap: break-word !important;">        L2——试样经拉伸后的回复长度(Lo+MM’距离)。<br style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; overflow-wrap: break-word !important;"></span></section><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; text-indent: 2em; overflow-wrap: break-word !important;"><br style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; overflow-wrap: break-word !important;"></section><p style="margin-right: 8px; margin-bottom: 5px; margin-left: 8px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; text-indent: 2em; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(63, 63, 63); font-size: 15px; overflow-wrap: break-word !important;">化纤丝的回弹率高低，关系到丝织物的耐穿程度，因为丝织物在日常使用中，经常受到比丝断裂强度和断裂伸长率小得多的外力拉伸，而产生伸长变形。</span></p><p style="margin-right: 8px; margin-bottom: 5px; margin-left: 8px; outline: 0px; max-width: 100%; clear: both; min-height: 1em; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; text-indent: 2em; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(63, 63, 63); font-size: 15px; overflow-wrap: break-word !important;"><br style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; overflow-wrap: break-word !important;"></span></p><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; text-indent: 2em; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(63, 63, 63); font-size: 15px; overflow-wrap: break-word !important;">回弹率高的丝，每受外力拉伸一次，其伸长变量很小，伸长变形累积速度就较慢，这样丝条就能承受多次加负荷、去负荷的反复拉伸、纤维耐疲劳性好，其制成的织物不但弹性挺靠度好，而且坚牢耐穿，反之回弹率低的丝，每拉伸一次，伸长变形大，伸长积累速度就快，当伸长的变形量超过丝的断裂伸长时，丝就断裂，由于纤维耐疲劳性差，则制成织物也不经穿、不耐磨。</span></section><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; text-indent: 2em; overflow-wrap: break-word !important;"><br style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; overflow-wrap: break-word !important;"></section><section style="margin: 0px 8px; padding: 0px; outline: 0px; max-width: 100%; font-size: 17px; letter-spacing: 0.544px; text-align: justify; font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; min-height: 1em; text-indent: 2em; overflow-wrap: break-word !important;"><span style="margin: 0px; padding: 0px; outline: 0px; max-width: 100%; color: rgb(63, 63, 63); font-size: 15px; overflow-wrap: break-word !important;">另外，纤丝的回弹性好坏还直接影响到制成织物的尺寸稳定性和织物折回复性。回弹性好的丝，由于其伸长变形小，织物在使用过程中折保持性也较好。</span></section></h1>

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