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FILE NAME Manville JMA DATE 1975 DOC JMA040 DOCUMENT DESCRIPTION Asbestos in Plastics Materials Goodyear - Letter & Report 3M Manville Sales Corporation Asbestos Fibre Division 2222 Kensington Court Oak Brook Illinois 60521 312 337-1144 Chicago 312 887-7400 Oak Brook } December December 4 1975 Mr. Vance A. Stayner Plastic's President i File File Materials Inc. Box 63 Sugar Grove Illinois 60554 Dear Vance For your present work I am sending you a twenty pound sample of our loose 7RF02 for your test work Currently the louse 7RF02 is 90 a ton in Canadian funds F.O.B. our Jeffrey mine in Asbestos Quebec This material will be available in the loose form after January 1 1976 for about another year For future use to reduce dust problems I am sending twenty pounds of 7RF02 in flake form and treated with a polyethylene glycol treatment I hope this can be used in your processing equipment Since this flake would reduce the amount of dust generated I believe this material should break up in your mixers since a similar flake material containing water as a binder is used in drilling muds for the oil industry where the fiber flakes are just poured into pond to give the viscosity to the drilling mud I believe our current estimate on the price of this flake material with the polyethylene glycol treatment will be approximately 10-12 a pound in final production Again the 7RF02 flakes price would be F.O.B. our mine in Canadian funds I have checked into the labeling and I believe it would require a requirements for your label as follows material . CAUTION Contains Asbestos Fibers Avoid Creating Dust Breathing Asbestos Dust May Serious Bodily Harm Cause December 4 Page 2 1975 I hope this letter answers your questions and you should be seeing the samples in three or four weeks If you require further information please feel free to contact me Sincerely Rich Cree ai  MANVILLE RESEARCH AND ENGINEERING CENTER _ Report No. 411-967 Date January 8 1975 ASBESTOS REINFORCED THERMOPLASTICS LATEX FIBER TREATMENTS BY GOODYEAR Plastics SUMMARY 7TS6 fiber treated with SBR and NBR latex by Goodyear Tire and Rubber Chemical Division was sent to Manville Research and Development for evaluation The treatment was developed as part of a program to eliminate dust in powdered materials and included an encapsulation process Past commercial use of asbestos in polymer products prompted trial application of latex to 7TS fiber by Goodyear The treated fibers were received in the form of small nodules and were essentially dust free The fiber nodules opened easily under finger pressure The treatments included two types budadiene SBR and acrylonitrile NBR applied at 5 percent level The fibers were compounded in polyethylene and polybutylene by intensive mixing and compression molded Untreated fiber and glycol treated fiber were included for comparison None of the 7TS fibers showed complete dispersion and impregnation in republicaton the molded resin The NBR latex treatment improved dispersion of 7TS6 or fiber in polyethylene but showed no improvement in impact strength compared to untreated fiber The SBR latex showed poorer dispersion than untreated fiber but higher impact strength Apparently poor fiber dispersion resulted in less damage to the impact strength of distrbuon unfilled polyethylene general In polybutylene the latex treatments showed negligible effect on im- for pact strength compared to untreated fiber and gave much less improve- Not ment in flexural strength In general the latex treatments were not effective as impact modifiers in thermoplastics as compared to the liquid treatment Results CONFIDETAL point up the importance of processibility and the need for processing aids to improve fiber dispersion of 7TS6 fiber Contents Summary Appendixes I and II M jmw Distribution on reverse side Reported by ; H Kistman Juce J. H. Kietzman Notebook No 4414 pp 126-131 MANVILLE RESEARCH AND ENGINEERING CENTER aber rr Report No. 411-967 Page 1 eae APPENDIX I Table 1 Outline of Compounding and Molding Procedures Brabender Compounding Equipment Brabender Mixing Chamber roller head Mixing Temperature 350 Mixing Time 5 minutes after RPM 25 Batch Weight 60 grams total fusion peak Compression Molding wont Equipment DAKE Hand Press wjqndaj Polyethylene Polybutylene or Preheating Pressure - 25,000 gage 25,000 gage Temp Rise - 75 to 240 75 to 220 distrbuion Dwell Time - 5 minutes Compression Max Temp - 280 5 minutes 260 genral Pressure - 30,000 gage Dwell Time - 5 minutes 30,000 gage 5 minutes for Not Note Brabender samples preheated under pressure to tempera- tures 15 to 20 degrees below the resin softening point Densification was obtained by allowing platen tempera- ture to increase under load to the softening point of CONFIDETAL the resin IM MANVILLE RESEARCH AND ENGINEERING CENTER Report No. 411-967 Page 2 ae APPENDIX II Table 1 Processibility 40 Percent 7TS6 Fiber Resin Fiber Treatment Brabender Melt Torque Fiber Dispersion & Impregnation Polyethylene Unfilled 2,800 None SBR Latex NBR Latex Glycol 10 3,600 4,050 3,500 4,030 Fair to Poor Poor Fair to Good Fair republicaton Polybutylene vir distrbuion Unfilled None SBR Latex NBR Latex Glycol 10 1,650 1,800 2,300 2,500 2,050 Fair to Good Very Poor Fair Fair to Good general for * butadiene sample No. 5813-150A Not acrylonitrile sample No. 5813-152A Effect of Fiber Treatment -- -- Processibility Decreased Improved Improved Decreased Slight Decrease No Effect CONFIDETAL EM MANVILLE RESEARCH AND ENGINEERING CENTER Report No. 411-967 Page 3 ee APPENDIX II Table 2 Strength of Molded Sheets 40 Percent 7TS Fiber Resin Fiber Treatment Polyethylene High Density Unfilled Control Untreated Fiber SBR Latex NBR Latex Polyethyl Glycol 10 republicaton Polybutylene republication Witco ist Unfilled Control Untreated Fiber SBR Latex NBR Latex distrbuion Polyethyl Glycol 108 gen ral A day cure at normal temperature for Not Izod Impact Ft Lb Notched Unnotched Flexure Ultimate j Stiffness Strength | Modulus psi psi x 105 1.5 23.0 6,790 1.6 0.5 0.6 0.4 1.0 2.5 4.4 2.6 4.0 8,000 6,520 6,290 6,900 2.6 2.2 2.2 1.9 2.2 0.6 0.8 0.8 1.6 13.8 4.7 4.2 4.6 8.5 4,180 5,540 4,990 4,490 4,500 0.6 1.6 1.2 1.1 1.1 CONFIDETAL I'M