Application

Thermosets can be used in several environments to serve unique markets. They are the strongest solution in terms of fighting against corrosive environments, reduced connectivity in electrical environments, reduced absorption/vibrations in audio environments and provide strength to environments that require less weight.

Cornerstone composites helps you determine the strongest solution for your market.

Cross linking is the key. Thermoset materials are stronger due to the three-dimensional network of bonds called cross linking. As shown in our company’s identity, molecules are locked or set into place creating a strong bind of material that can withstand heat and stress.

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THERMOSET COMPOSITES

What are they? Mixtures of polymer resins, catalysts and reinforcement Materials react and cross-link when exposed to thermal energy, hence – “thermoset”. Thermosets are permanently solidified upon cross-linking. While thermoplastics can be melted, solidified and melted again with heat cycles, thermosets are permanently solid. So, thermosets are well suited to high temperature environments; thermoplastics are not. Thermoset materials get their unique properties from the formation of three-dimensional covalent bonds between the molecules – “cross-linking”. Thermoplastics exhibit molecule-to-molecule bonds that are largely electrostatic attractions and entanglements.

WHEN TO USE THEM…

Thermoset composites often fill in the performance region between common thermoplastics and metals.

ATTRIBUTES OF THERMOSET

APPLICATION IN PRODUCT DESIGN

One might choose from the thermoset family of materials when the design called for one or more of this criteria.

THERMOSET VS. THERMOPLASTIC

COMPRESSIVE CREEP PROPERTIES AT 150°C

TYPICAL PHYSICAL

THERMOSET COMPOSITES

High Stiffness
High Strength
Structural Aesthetics
Dimensional Stability at Elevated Temperatures
Low Creep at Elevated Temperatures
Dielectric Applications
Chemical Resistance
Longer Tool Life Compared To Die Cast
Lower Cost Than Engineered Thermoplastic
Lower Cost Than Die Cast Metals

Cornerstone Composites – Production Machines Vienna Ave Plant

Machine#	Tonnage	Main Ram Type	Transfer Ram	Platen Size	Max Mold Heigh
101	300	Top	None	41 X 30	39
102	350	Bottom	Top	40 X 30	35
103	400	Bottom	Bottom	32 x42	16
104	300	Bottom	None	31 1/4 X 31	41 5/8
105	200	Bottom	Top	30 X 24	35
106	250	Bottom	Top	24 1/2 x27	33 1/4
108	400	Bottom	None	28 x48	45
109	200	Bottom	None	27 3/4 X 13	35 1/4
112	200	Bottom	Top	24 x26 1/8	36 1/2
114	70	Top	Bottom	21 1/2 X 19 1/2	25
115	70	Top	Bottom	21 1/2 X 19 1/2	25
116	600	Bottom	None	48 x42	41
117	150	Top	Bottom	27 1/2 X 24 1/2	33
118	192	Top	Top	24 x26	32
119	150	Top	Bottom	27 1/2 X 24 1/2	33
120	300	Top	Bottom	28 X 32	37 1/4
121	70	Top	Bottom	21 1/2 X 19 1/2	25
122	350	Top	Bottom	34 X 30	40 1/2
124	500	Top	Bottom	48 1/2 X 42	54
128	350	Top	Bottom	34 X 30	38
201	260	Injection	None	34×34	44
301	99	Injection	None	14 1/8 x17	28 1/2
302	175	Injection	None	26 1/2 X 26 1/2	27 1/2
305	300	Injection	None	43 1/2 X 38	42
8	150	Top	None	48 x45	67
9	150	Top	None	60 x48	67
10	150	Top	None	60 x48	67
11	150	Top	None	50 x42	67
2	450	Bottom	None	42 x42	30
3	220	Top	None	71 X 48	69
6	350	Top	None	90 x60	74
4	150	Top	Bottom	27 X 23 1/2	31
5	80	Top	Bottom	19 X 26	26