Knowledge

​ 3.Uneven foam hole (too large or too small) If the foam hole is too large, the hardness and density of the product are not up to standard, the closed hole will become a joint

​ 1.Insufficient foam holes The reason: (1) Quality problems of foaming agent; (2) The plastic material is too low; (3) Mixing temperature is too high, foaming agent e

First, the tearing strength of various rubber (vulcanized rubber) : NR>TPC>IR>PUR>CO>NBR>IBR>CR>CSM>SBS>BR>SBR>EPDM>FKM> Silicone rubber&g

Definition and characteristics of micro crystalline wax: Micro crystalline wax is a kind of solid substance with micro crystalline structure, which is composed of various paraffin

Application of Rubber Protecting Wax Rubber protective wax can extend the service life of rubber products, is widely used in tire companies, is the production of radial tires, bias

Calculation of rubber content 1. Concept of rubber content The percentage of raw rubber in the rubber material; The percentage of raw rubber in the rubber material to the total rub

The chemical foaming agent should be easy to disperse uniformly, and it is best to be mixed with plastic.

Foaming agent is a substance that makes the object substance porous, which can be divided into three categories: chemical foaming agent and physical foaming agent and surfactant.

According to the chain reaction theory of combustion, what is needed to sustain combustion are free radicals.

After adding flame retardants to combustible materials, flame retardants can form glassy or stable foam covering at high temperatures

If part of the heat released by the fire source can be absorbed in a short time, the flame temperature will be reduced

Flame retardants, functional additives that give flammable polymers flame retardancy, mainly for flame retardant design of polymer materials