1、4l Designation:D 2150-81 AMERICAN SOCIETY FOR TESTING AND MATERIALS 1916 Race St.,Philadelphia,Pa.19103 Reprinted from the Annual Book of ASTM Standards,Copyright ASTM If not listed in the current combined index,will appear in the next edition.Standard Specification for WOVEN ROVING GLASS FABRIC FOR
2、 POLYESTER-GLASS LAMINATES1 This standard is issued under the fixed designation D 2150;the number immediately following the designation indicates the year of original adoption or,in the case of revision,the year oflast revision.A number in parentheses indicates the year oflast reapproval.A superscri
3、pt epsilon()indicates an editorial change since the last revision or reapproval.1.Scope I.I This specification covers woven fabrics made from glass rovings that are intended for use in laminated plastics for structural or semi-structural parts.2.Applicable Documents 2.1 ASTM Standards:D 618 Conditio
4、ning Plastics and Electrical Insulating Materials for Testing1t D 790 Tests for Flexural Properties of Plas-tics and Electrical Insulating Materials3 D 1898 Recommended Practice for Sam-pling of Plastics3 D 1910 Test for Construction Characteristics of Woven Fabrics4 D 2584 Test for Ignition Loss of
5、 Cured Rein-forced Resins5 2.2 Military Standard:MIL-STD-105 Sampling Procedures and Ta-bles for Inspection by Attributes6 3.Types 3.1 This specification covers the 16 types of fabrics described in Table 1.4.General Requirements patible with a particular polyester(or other type)resin specified in th
6、e purchase order.When so specified,the test laminate(see Sec-tion 8)shall be made with that resin and the purchase order shall specify its dry and wet flexural strength requirements.4.3 Weights and Dimensions-The woven roving glass fabric shall conform to the require-ments for roll length,weights,an
7、d dimensions described in Table 2.4.4 Widths-The following widths shall be considered standard:965 mm(38 in.),1120 mm(44 in.),1270 mm(50 in.),and 1520 mm(60 in.).Other widths are available upon request.The widths of the fabric shall vary not more than 12.7 mm(0.50 in.).4.5 Workmanship-The fabric sha
8、ll be man-ufactured in accordance with best commercial practice to produce a material of uniform qual-ity,substantially free from defects that would affect its end use application.5.Detail Requirements 5.I The properties of the fabric shall be such that when plastic laminates are fabricated and test
9、ed as specified in Sections 7 to 10,the 4.1 Strand Comnosition-The roving strand r 1 This specification is under the jurisdiction of ASTM will be designated by the yield in metres per Committee D-20 on Plastics and is the direct responsibility kilogram(yards per pound).of Subcommittee 020.18 on Rein
10、forced Thermosetting Plas-4.2 Binder-The glass rovings used to make ticsCurrent edition approved Jan.30,1981.Published March the fabrics shall contain a sizing to facilitate 1981.Originally published as D 2150-63 T.Last previous weaving and to impart high wet strength to edition D 2150-70(1977).2 An
11、nllQ/Book of ASTM Standards,Parts 22,35,and 39.laminates.Unless otherwise specified,the sizing 3 Annual Book of ASTM Standards,Part 35.shall be compatible with a polyester laminating Annual Book of ASTM Standards,Part 32.l b h Ii f h 5 Annual Book of ASTM Standards,Part 36.resin se ected Y t e supp
12、er O t e woven Available from Naval Publications and Forms Center,roving.When specified,the sizing sha-ll_b:.e:.c:.o:.m.:_-_.:_58:.0.:.1.:T.:a.:.bo_:r_A_ve.,Philadelphia,Pa.19120.NOTICE:This standard has either been superseded and replaced by a new version or discontinued.Contact ASTM International(
13、www.astm.org)for the latest information.t D 2150 laminate will meet the physical requirements prescribed in Table 3.6.Sampling 6.1 Sample-A sample for tests shall be taken from just under the outer convolution of one roll selected at random from the lot.6.2 Lot Size-A lot size shall consist of9070 k
14、g(20()()()lb).6.3 Small Lot Sampling-:-On orders less than 9070 kg(20 000 lb),the sampling proce-dure shall be agreed upon between manufac-turer and purchaser.However,if small multiple shipments are made from an inspected lot,the shipments may be made without additional inspection.7.Test Methods(Fab
15、ric)7.l The properties enumerated in this spec-ification shall be determined in accordance with the following methods:7.1.1 Thread Count,Width,and Weight-Method D 1910.8.Test Methods(Laminate)8.1 Preparation of Laminate:8.l.3 Test a sample of the cured lamate for resin content ill accordance with Se
16、ction 9.If outside the specified limits,reject the laminate and prepare another.Test specimens cut from the properly made laminate for laminate strengths in accordance with Section 10.81.4 If desired,the,test laminate may be made by the vac1mm bag technique and must meet the requirements of 8.1.1 in regards to resin content,tlllckness,and number of plies.8.l.5 Apply resin to each layer in such a manner as to wet out completely all layers of glass without inclusiOn of air voids.8.l.6 Enclose the
