Reinforced reaction injection moulding RRIM

The following is a preliminary report on reinforced reaction injection moulding (RRIM), The process is in a state of rapid development and as yet there are no UK applications, although several companies are considering RRIM automotive parts. [Pg.127]

A successful production model sports has commenced manufacture in the USA. This is General Motors Pontiac-Fiero. The body panels are made in RRIM hung on a steel sub-frame. The roof and bonnet lid are made in sheet moulding compound (SMC) for greater stiffness. [Pg.127]

RRIM is a development of the RIM process (reaction injection moulding). The essential feature of an RIM system is a 2-component liquid resin system which reacts rapidly when the two components mix, to form a fully developed polymer inside the mould. Usually these systems are polyurethanes, although others, especially nylon-based systems, are under development. [Pg.127]

Liquid precursors are mixed (one of them already containing short fibres) as they are injected into a closed mould (see Chapter 7). The resulting fibre arrangement is influenced by the flow of the simultaneously cross-linking polymer, but approximates to being random in three directions. [Pg.256]

Forming is usually carried out using the normal process of extrusion or injection moulding (see Chapter 7). Alignment of the reinforcement is [Pg.256]

The reinforced reaction injection moulding (RRIM) process is a development of RIM in which reinforcing fillers such as glass fibres are incorporated into the polymer. One advantage of such a system is to reduce the coefficient of thermal expansion, and with a 40-50% glass fibre content the coefficient is brought into line with those of metals. [Pg.804]

Reinforced reaction injection moulding (RRIM) is an extension of RIM. Materials for RIM and RRIM are very similar, but the moulding processes are substantially dissimilar because of the differences in viscosity and... [Pg.194]

CHAPTER TWELVE Reinforced Reaction Injection Moulding (RRIM) ICI PLC... [Pg.127]

Redland Tiles Ltd, 65 Reinforced reaction injection moulding (RRIM), 127-32 advantages, 131 development, 129 limitations, 132 process, 130... [Pg.343]

The polymer applications of wollastonite are mainly based on its combination of acicularity, chemical inertness, whiteness and low water adsorption. Primary consuming polymers include thermoplastics, such as polypropylenes and polyamides, and thermosets, snch as polyester dough and sheet-moulding compounds, epoxies and phenolics. Manufacturers are predicting considerable growth in reinforced reaction injection moulding (RRIM) systems. [Pg.75]

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