论文部分内容阅读
塑料树脂取样方法国家标准已于1980年11月在全国塑料树脂标准审查会上通过。本标准是一种有指导性的技术文件,它适用于各种塑料树脂的取样。本文以D141酚醛塑料粉作为一个例子,从一个方面来说明本标准的具体应用,仅供采用时参考。对不同产品的取样方法,可根据标准中的规定由有关方面协商决定。现将本标准有关问题介绍如下: (一)制订本标准的意义: 取样:是从大量产品中取出少部分作为样品的一个活动过程。这个过程是各个生产部门进行正常生产管理时必不可少的工作环节。随着生产力的发展,生产能力越来越大,一个生产厂平时买进的原料和生产的产品往往是大量的。这时若要知道其原料或产品的质量,就不可能对所有的原料或产品进行一一检验。特别是有些性能指标,要通过破坏性检验才能得到,
Plastic resin sampling method of national standards in November 1980 at the National Plastics Resin Standards Review Conference. This standard is a guiding technical documents, it applies to all kinds of plastic resin sampling. In this paper, D141 phenolic powder as an example, from one aspect to illustrate the specific application of this standard, for reference only when used. Sampling methods for different products may be determined by the relevant parties according to the provisions in the standard. Now the relevant issues of this standard are described as follows: (A) the significance of the development of this standard: Sampling: a small part of a large number of products removed as a sample of an activity process. This process is an indispensable work link for all production departments to carry out normal production management. With the development of productivity, the production capacity is getting larger and larger. The raw materials and products usually purchased by a manufacturer are often large. At this time to know the quality of their raw materials or products, it is impossible to inspect all the raw materials or products. In particular, some performance indicators, to pass destructive testing can be obtained,