1 Resin properties（ twenty-five ℃ ）

Viscosity (CPS) 400-800 　

Solid content: > seventy ％

Specific gravity: > one point two zero zero

2 Performance of SMC products

Bending strength Mpa one hundred and forty

Impact strength kJ / M ^two 　　 ninety-two

Hot deformation temperature ℃　　　　　>250

Oxygen index% fifty

Smoke density DM < ten

3 within Release agent

each one hundred Part resin three point five Zinc stearate can be used as internal release agent.

4 filler

each one hundred Parts of resin can be added 60—100 These fillers can be stone powder, aluminum hydroxide, kaolin, glass beads, etc.

5 Technology and molding

It can be produced on standard SMC production equipment. The ripening time is forty ℃ lower 24—36 Hours. Products can be found in 145--150 ℃ 、 ten After the mold was closed, the pressure was carried out at MPa 30—45 The steam release operation will be carried out in seconds 2—3 Times, suppression time is one minute /1 Mm.

6 Carrier model

In order to reduce the adhesion of SMC sheet to the die, it is suggested that biaxially oriented PVC film be used as the carrier.