CN106397724B - 一种低成本安全轮胎内部填充用聚氨酯材料及其使用方法 - Google Patents

一种低成本安全轮胎内部填充用聚氨酯材料及其使用方法 Download PDF

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CN106397724B
CN106397724B CN201610711120.1A CN201610711120A CN106397724B CN 106397724 B CN106397724 B CN 106397724B CN 201610711120 A CN201610711120 A CN 201610711120A CN 106397724 B CN106397724 B CN 106397724B
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杜俊超
孙海欧
赵修文
于文杰
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Abstract

本发明公开了一种低成本安全轮胎内部填充用聚氨酯材料及其使用方法，以重量百分数计：A组分包括5％‑15％二异氰酸酯，15％‑40％聚醚多元醇1，50％‑75％稀释剂；B组分包括20％‑47.5％聚醚多元醇2，1％‑5％扩链剂，交联剂1％‑5％，稀释剂50％‑75％，催化剂0.3％‑1.0％，防老剂0‑2％。聚醚多元醇1选自官能度2或3，分子量在2000‑5000的聚环氧丙烷醚多元醇；聚醚多元醇2是分子量在4000‑8000，官能度2或3的聚环氧丙烷醚多元醇；稀释剂选自环烷油、芳烃油、三(2‑氯丙基)磷酸酯、2，2，4‑三甲基‑1，3‑戊二醇双异丁酸酯。该材料原液粘度低、成本低，混合后可操作时间长、填充速度快。

Description

一种低成本安全轮胎内部填充用聚氨酯材料及其使用方法
技术领域
本发明涉及轮胎内部填充材料，特别涉及轮胎填充用聚氨酯材料。
背景技术
安全轮胎内部填充聚氨酯材料是一种新型的轮胎填充材料，其具有物理性能好、软硬度易调节、形变恢复快、滞后生热少、制品缺陷少、使用寿命长等优点。用聚氨酯材料填充轮胎采用静态混合器进行原材料混合，室温填充，制品无须高温熟化，耗能少；生产周期短，生产效率高，可节省大量的人力和物力，便于连续化生产。
专利文献CN102585147A公开了一种工程装备用聚氨酯弹性体组合物，采用双组份体系，一是A组分：二异氰酸酯与聚醚多元醇反应，得到异氰酸根含量3％～8％的预聚物；二是B组分：主要采用聚环氧丙烷醚多元醇、催化剂组成。A组分与B组分以体积比100∶90～110混合，浇注、硫化成型，得到制品硬度为邵A20～60的聚氨酯弹性体制品。该聚氨酯弹性体制品能够用于轮胎的填充。但该组合物A、B组分粘度大，不利于混合充模；聚醚用量大，成本高。
发明内容
本发明要解决的第一个技术问题是提供一种安全轮胎内部填充用聚氨酯材料。该材料原液粘度低、成本低，混合后可操作时间长、填充速度快。
本发明要解决的第二个技术问题是提供一种该材料的使用方法。
为解决第一个技术问题，本发明提供一种安全轮胎内部填充聚氨酯材料，由两种组分组成，以重量百分数计包括：
A组分：二异氰酸酯 5％-15％，
聚醚多元醇1 15％-40％
稀释剂 50％-75％
在80-90℃反应2h，得到异氰酸根含量在2％-7％的预聚体。
其中二异氰酸酯选自TDI或MDI-100或其混合物；聚醚多元醇1选自官能度2或3，数均分子量在2000-5000的聚环氧丙烷醚多元醇；稀释剂选自环烷油、芳烃油、三(2-氯丙基)磷酸酯、2，2，4-三甲基-1，3-戊二醇双异丁酸酯等。
B组分：聚醚多元醇2 20％-47.5％，扩链剂1％-5％，交联剂1％-5％，稀释剂50％-75％，催化剂0.3％-1.0％，防老剂0-2％，得到B组分。
聚醚多元醇2是数均分子量在4000-8000，官能度2或3的聚环氧丙烷醚多元醇。
本发明所述的催化剂量0.3％-1.0％包括0.2％-0.9％的叔胺类催化剂和0.1-0.5％的有机金属催化剂。叔胺类催化剂包括三亚乙基二胺、N-甲基二环己胺、五甲基二亚丙基三胺或三乙胺等；有机金属催化剂包括二硫醇二辛基锡、双十二烷硫基二甲基锡、二月桂酸二丁基锡、双十四烷酸二丁基锡、有机铋等。
本发明所述的防老剂，如：抗氧剂168，抗氧剂1010，抗氧剂1135等。
本发明所述的扩链剂为1，4-丁二醇、二乙二醇等。
本发明所述的交联剂为4，4’-双仲丁氨基二苯基甲烷、二乙基甲苯二胺等。
A、B组分黏度均在200-600mPa·s。
本发明材料使用时，将A组分与B组分按体积比以100∶100，以静态混合器混合浇注，填充，混合温度为15-40℃，混合后的使用期≥120分钟，在室温下硫化成型，得到硬度为邵氏A25-35的聚氨酯弹性体制品。
本发明材料与现有技术相比，具有以下优点和有益效果：以多元醇为主要原料，添加扩链剂、交联剂，A、B组分中均使用大量的稀释剂等，其A、B组分黏度均200-600mPa·s，填充速度快，操作简单，A、B组分混合后的使用期≥120分钟，该聚氨酯材料能用于安全轮胎的填充，原材料成本比现有同类材料低20％。
具体实施方式
下面结合实施例对本发明作详细说明。实施例配方所使用的原料：
(1)PPG 1 以甘油为起始剂环氧乙烷环氧丙烷嵌段多元醇，官能度为3，羟值为36。
(2)PPG 2 以甘油为起始剂环氧乙烷环氧丙烷嵌段多元醇，官能度为3，羟值为24。
(3)PPG 3 以甘油为起始剂环氧乙烷环氧丙烷嵌段多元醇，官能度为3，羟值为28。
(4)PPG 4 以乙二醇为起始剂环氧乙烷环氧丙烷嵌段多元醇，官能度为2，羟值为28。
实施例1-4原料重量份见表1，将原料(15)、(16)和(3)、(14)在90℃下快速搅拌反应2小时，制成预聚体，用(7)(8)(9)(10)进行稀释，制成A组分，将配方中其它原料配制成B组分。A组分与B组分按体积比以100∶100，以静态混合器混合浇注，填充，混合温度为15-40℃，混合后的使用期≥120分钟，熟化7天即可达到最高强度。制品具有良好的物理性能，材料性能见表2。
表1 实施例原料用量
Figure BSA0000133725380000031
Figure BSA0000133725380000041
表2 实施例材料性能
项目 实施例1 实施例2 实施例3 实施例4
可操作时间/min 150 120 120 120
硬度/邵氏A 25 32 35 34
拉伸强度/MPa 1.38 1.53 1.73 1.82
撕裂强度/(N·mm<sup>-1</sup>) 6.98 7.65 6.71 9.03
压缩永久形变/％ 4.2 2.5 2.4 2.0
回弹率/％ 43 45 43 46
断裂伸长率，％ 410 280 260 300

Claims (7)

1.一种安全轮胎内部填充用聚氨酯材料，由两种组分制成，以重量百分数计包括：
A组分：二异氰酸酯 5％-15％
聚醚多元醇1 15％-40％
稀释剂 50％-75％
在80-90℃反应2h，得到异氰酸根含量在2％-7％的预聚体；
其中二异氰酸酯选自TDI或MDI-100或其混合物；聚醚多元醇1选自官能度2或3，数均分子量在2000-5000的聚环氧丙烷醚多元醇；稀释剂选自环烷油、芳烃油、三(2-氯丙基)磷酸酯、2，2，4-三甲基-1，3-戊二醇双异丁酸酯；
B组分：聚醚多元醇2 20％-47.5％，扩链剂1％-5％，交联剂1％-5％，稀释剂50％-75％，催化剂0.3％-1.0％，防老剂0-2％，得到B组分；所述的扩链剂为1，4-丁二醇或二乙二醇；所述的交联剂为4，4’-双仲丁氨基二苯基甲烷或二乙基甲苯二胺；
聚醚多元醇2是数均分子量在4000-8000，官能度2或3的聚环氧丙烷醚多元醇；
A组分与B组分的体积比为100∶100。
2.根据权利要求1所述的安全轮胎内部填充用聚氨酯材料，所述的催化剂是指0.2％-0.9％的叔胺类催化剂和0.1％-0.5％的有机金属催化剂。
3.根据权利要求2所述的安全轮胎内部填充用聚氨酯材料，叔胺类催化剂是指三亚乙基二胺、N-甲基二环己胺、五甲基二亚丙基三胺或三乙胺；有机金属催化剂是指二硫醇二辛基锡、双十二烷硫基二甲基锡、二月桂酸二丁基锡、双十四烷酸二丁基锡或有机铋。
4.根据权利要求1所述的安全轮胎内部填充用聚氨酯材料，所述的防老剂是指抗氧剂168，抗氧剂1010或抗氧剂1135。
5.根据权利要求1所述的安全轮胎内部填充用聚氨酯材料，A、B组分黏度均在200-600mPa·s。
6.根据权利要求1所述的安全轮胎内部填充用聚氨酯材料，其特征是A、B组分混合后的使用期≥120分钟。
7.一种权利要求1～5之一所述的安全轮胎内部填充用聚氨酯材料的使用方法，将A组分与B组分按体积比以100∶100，以静态混合器混合浇注，填充，混合温度为15-40℃，在室温下硫化成型，得到硬度为邵氏A25-35的聚氨酯弹性体制品。
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