What are the quality and testing standards of silicone products?

Basic testing standards for silicone products

1. Material safety testing
First of all, the material safety of silicone products is the primary consideration. This includes harmful substances such as heavy metals in silica gel raw materials
(lead, mercury, cadmium, etc.), harmful additives (such as plasticizers), volatile organic compounds (VOCs), etc.
These tests are usually carried out in accordance with relevant international or domestic safety standards, such as the European Union's ROHS directive and REACH regulations
As well as China's GB/T standards, etc., to ensure that the product is harmless to the human body and meets environmental protection requirements.

2. Physical performance test
Physical property test is an important step to evaluate the basic properties of silicone products. This includes, but is not limited to, hardness testing (e.g. Shaw
Hardness), tensile strength, tear strength, resilience, wear resistance, aging resistance, etc. These tests are intuitive
The durability and service life of silicone products ensure their stability and reliability in various application environments.

3. Weather resistance test
The weather resistance test of silicone products is also essential. This includes high temperature resistance, low temperature resistance, ultraviolet resistance, ozone resistance and so on
Tests to simulate the use of products in extreme environments to assess their performance changes and degree of aging. Especially for
Outdoor use of silicone products, such as seals, gaskets, etc., weather resistance testing is particularly important.

Inspection standards for specific application areas

1. Silicone products for medical devices
For medical device silicone products, in addition to the above basic testing, biocompatibility testing is also required. This includes cells
Toxicity test, sensitization test, intradermal irritation test, etc., to ensure that the product will not cause adverse reactions when in contact with the human body
Yes. At the same time, it also needs to meet the relevant regulations and standards for medical device registration, such as ISO 10993 series standards.

2. Food grade silicone products
The testing standards of food-grade silicone products are more stringent, and it is necessary to ensure that the product will not release harmful substances when in direct contact with food
Quality. This includes the purity requirements of the silica gel raw material, the testing of migratory substances (such as heavy metals, plasticizers, etc.), smell and taste
Dao test, etc. At the same time, it also needs to meet the regulatory requirements of various countries on food contact materials, such as the US FDA and the EU LFGB
Let's wait.

3. Electronic and electrical silicone products
Electronic and electrical silicone products need to be tested for electrical performance because of the particularity of their application environment. This includes insulation resistance
Voltage resistance testing, flame retardant testing, etc., to ensure that the product will not cause electrical safety problems during use. In addition
For some silicone products for specific purposes, such as conductive silicone buttons, electrical conductivity testing is also required.