SH-9682有机硅胶粘剂
适用于硅胶脚垫、硅胶饰品、硅胶泡棉、汽车内饰减震、航天内饰减震、电子器材、商标、标签的粘接,以及硅胶与硅胶、硅胶与金属、云母制品等的粘接。
所属分类:
有机硅胶黏剂
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产品描述
SH-9682有机硅胶粘剂
一、性能特点
本产品是以聚硅氧烷生胶和树脂为基料,再添加助剂的甲苯溶液。具有较高的耐热性,柔软性和较好的绝缘防潮性,适用于硅胶脚垫、硅胶饰品、硅胶泡棉、汽车内饰减震、航天内饰减震、电子器材、商标、标签的粘接,以及硅胶与硅胶、硅胶与金属、云母制品等的粘接。
- 主要技术指标
|
项 目 |
指 标 |
|
外 观 |
无色或淡黄色均匀液体,允许有乳白光,无机械杂质 |
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固体含量(150℃,2h)/ % |
60±2 |
|
粘度(25℃)/cp |
10000~80000〖1〗 |
注:〖1〗可按客户要求进行定制。
三、应用说明
本产品为双组份,可用过氧化物BPO或本公司专用固化剂固化;
由于基材、涂敷设备、固化周期和所需特性等因素的不同,固化剂的加入量为胶水量的2.0~2.5%。为了保证固化剂和胶粘剂的良好混合,首先将其完全溶解于溶剂然后再加入到胶液,搅拌混匀。同时,在涂布上机前应再用180目以上的滤网过滤一次,以防止机械杂质的混入;
使用固化剂可以加快固化速度或允许在低温下固化,还可以提高粘合剂的内聚强度,提高其在基材上的附着性能。混合配制后的分散液只能使用一到两天,这是因为固化剂在溶剂中会很快失去其活性。在混合过程中胶粘剂和固化剂的充分分散是保证成品使用效果一致性的必要条件;
SH-9682系列粘合剂可以用传统的胶带涂敷设备直接涂布,在涂敷前可以进一步用相溶的溶剂如甲苯、二甲苯兑稀,工作液浓度以18-20%左右为宜,具体可根据各自的设备和经验来定。涂布使用溶剂时必须保证通风良好,并请遵守溶剂供应商的安全预防措施和相关法规。
表面硫化周期:80-90℃*2min除溶剂,以确保在进入固化区硫化时粘合剂中没有溶剂存在;150-170℃*5min,通过热固化使其粘合力、内聚强度以及初粘力进一步加强。但硫化所需的确切条件取决于加热炉的长度、温度和效率,固化剂的类型以及所使用的底材的类型,同时必须在设备上进行试验来确定该条件。
如果设备和基材允许使用更高的固化温度,则固化时间可以缩短。与低温固化相比,提高固化温度可以在更短时间内达到胶粘剂的内聚强度。
四、包装和贮运
装入清洁干燥的200kg或1000L钢桶中,加盖密封。室温(0~35℃)下贮存,防止阳光直接照射,储存期为6个月(超期检验合格,仍可使用),按危险品贮运。
SH-9682 Silicone Adhesive
Ⅰ Performance Feature
This product is a kind of toluene solution based on polysiloxane raw rubber and resin with additive. It has high heat resistance, softness and good insulation and moisture resistance. It is suitable for bonding silicone foot pads, silicone decorative items, silicone foam, automotive interior shock absorbers, aerospace interior shock absorbers, electronic equipment, trademarks, labels, as well as bonding silicone to silicone, silicone to metal, mica products, etc.
II Main Technical Index
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Items |
Index |
|
Appearance |
Colorless or light yellow transparent liquid, opalescent light is allowed, no mechanical impurity |
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Solid content(150℃, 2h)/% |
60±2 |
|
Viscosity( 25℃) /cp |
10000~80000〖1〗 |
Note: [1] Customization is available according to customer requirements.
Ⅲ Application Specification
This product is a two-component product and can be cured with peroxide BPO or the special curing agent of our company.
Due to the differences in factors such as substrate, coating equipment, curing cycle and required properties, the addition amount of the curing agent is 2.0 to 2.5% of the glue amount. To ensure the good mixing of the curing agent and the adhesive, first completely dissolve the curing agent in the solvent and then add it to the adhesive solution, and stir well to mix evenly. At the same time, before coating on the machine, it should be filtered once again with a filter screen of 180 mesh or more to prevent the mixture of mechanical impurities.
The curing agent can be used to accelerate the curing speed or allow for curing at low temperature, and it can also improve the cohesion strength of the adhesive and improve the adhesion property of the adhesive. The mixed and prepared dispersion liquid can only be used for one to two days, that is because the curing agent will lose its activity quickly in the solvent. The thorough dispersion of the adhesive and curing agent during the mixing process is a necessary condition to ensure the consistency of the finished product's application effect.
SH-9682 can be directly applied with traditional tape coating equipments. Before application, they can be further diluted with compatible solvents such as toluene and xylene. The concentration of the working solution is preferably around 18-20%, and the specific concentration can be determined according to each individual's equipment and experience. When using solvents for coating, it is essential to ensure good ventilation and please comply with the safety precautions and relevant regulations of the solvent supplier.
Surface vulcanization cycle: 80-90℃*2 minutes for solvent removal to ensure that there is no solvent in the adhesive when it enters the curing zone for vulcanization. At 150-170℃ for 5 minutes, its adhesive force, cohesive strength and initial adhesion are further enhanced through thermal curing. However, the exact conditions required for vulcanization depend on the length, temperature and efficiency of the heating furnace, the type of curing agent and the type of substrate used. At the same time, tests must be conducted on the equipment to determine these conditions.
If the equipment and substrate allow for a higher curing temperature, the curing time can be shortened. Compared with low-temperature curing, increasing the curing temperature can achieve the cohesive strength of the adhesive in a shorter time.
Ⅳ Packaging,Storage&Delivery
Packed in clean and dry 200kg or 1000L steel drums, and seal tightly. Store at room temperature (0-35℃),avoid direct sunlight. The storage period is 6 months (if it passes the inspection after the expiration date, it can still be used). Transport and store as dangerous goods.
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