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【行业资讯】科思创扩大在华TDI产能 提升聚氨酯软泡原材料供应

  • 2026-02-04 03:37:57
【行业资讯】科思创扩大在华TDI产能 提升聚氨酯软泡原材料供应

在电子电器、汽车制造、高端注塑等领域,材料选型始终面临核心痛点:普通线性PC流动性不足,复杂结构产品成型困难、废品率高;高温加工易导致产品发黄、性能衰减;轻薄化与高耐冲击性难以兼顾。为破解行业僵局,沧州大化依托多年高分子新材料研发积淀,重磅推出国产化支化PC新品——CH3035B,以分子结构创新实现性能与加工性的适配平衡,为高端制造注入新动能!

国产化突破

沧州大化作为国内化工领域标杆企业,近年在高分子新材料领域持续发力,凭借自主研发突破支化PC核心技术,成功实现国产化量产,推出两款支化PC一CH3035B1001(冰白)与CH3035B1003(天蓝),打破国外品牌在高端支化PC市场的垄断格局。

什么是支化PC?

PC因高强度、高耐热的优异特性被誉为“防弹胶”,但传统线性PC的分子结构如同笔直的长绳,加工时易缠绕团聚,导致流动性不佳。支化PC通过分子设计(界面缩聚法使用支化剂共聚合成,熔融酯交换法控制重排反应而成),在主链上延伸出均匀分布的支链结构,形似”树形架构“,从根源上改写材料性能逻辑。

支化PC的主要性能优势

1. 高熔体强度,加工性能表现出色

在低剪切速率下(挤压成型),支化PC的粘度略高于普通PC,这是因为支链的存在天幅增加了分子链之间的交缠数量,分子间的相互作用力更强,结构更稳定,因此不易产生垂坠变形,挤出产品的形态保持性更好。而在高剪切速率下(注塑成型),支化PC的粘度更低,这是因为支化结构在高剪切下更容易解缠结,“树枝”结构让分子间的摩擦力大幅降低,加工剪切时变稀顺畅填充模具,哪怕是有细微纹路、复杂腔体的精密部件,也能轻松成型。

2. 力学性能优异,防护与结构双适配

依托高分子量与支链缠结效应,在强度与韧性间实现最优平衡,室温4mm缺口冲击强度>72kJ/m²,应力分散能力优异,可用于防弹基材、安全头盔等防护场景;抗开裂性突出,分子作用力更强,长期使用中不易出现应力开裂,延长制品使用寿命。

3. 出色的耐热性能

致密的分子结构让材料耐热性大幅提升,热变形温度达143℃(0.45MPa),即使在一些高温等特殊环境下,仍能保持尺寸稳定,破解高温工况选型难题,为高端装备提供可靠材料支撑。

4. 耐环境应力开裂性

支链结构打乱了分子链的单向排布,减少了成型后的取向内应力,从源头减少了应力集中点;分子链间的交缠数量增多,使分子网络更致密,化学介质更难渗透,同时裂纹扩展时会受到更多分子缠结的阻碍,难以快速延伸,让支化PC在接触化学试剂或长期受力时,更不容易出现应力开裂,延长了制品的使用寿命。

支化PC的典型应用领域

来源:沧州大化

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  1. CONNECT:[ UseTime:0.001120s ] mysql:host=127.0.0.1;port=3306;dbname=no_mfffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001703s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000611s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000641s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001427s ]
  6. SELECT * FROM `set` [ RunTime:0.002289s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001541s ]
  8. SELECT * FROM `article` WHERE `id` = 473321 LIMIT 1 [ RunTime:0.022399s ]
  9. UPDATE `article` SET `lasttime` = 1770359720 WHERE `id` = 473321 [ RunTime:0.009517s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000689s ]
  11. SELECT * FROM `article` WHERE `id` < 473321 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001293s ]
  12. SELECT * FROM `article` WHERE `id` > 473321 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.004060s ]
  13. SELECT * FROM `article` WHERE `id` < 473321 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.017309s ]
  14. SELECT * FROM `article` WHERE `id` < 473321 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.006078s ]
  15. SELECT * FROM `article` WHERE `id` < 473321 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.062573s ]
0.302718s